Fractional CTO Scope Document: The PADISO Template

Table of Contents

1. Why a Fractional CTO Scope Document Matters
2. What a Fractional CTO Actually Does
3. The PADISO Scope Template: Core Domains
4. Pricing Models and Commercial Terms
5. Operational Patterns and Engagement Cadence
6. Deliverables and Success Metrics
7. Avoiding Common Scope Creep Traps
8. Security, Compliance, and Governance in Scope
9. Real-World Examples from PADISO Engagements
10. How to Implement the Template in Your Organisation
11. Next Steps and Getting Started

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Why a Fractional CTO Scope Document Matters

Every fractional engagement fails or succeeds based on one thing: clarity about what you’re actually paying for.

We’ve watched dozens of Sydney startups and mid-market teams hire fractional CTOs without a written scope. The result is always the same. The CTO spends the first month figuring out what the founder actually needs. The founder feels like they’re paying for thinking time, not shipping. By month three, both sides are frustrated. By month six, the engagement ends quietly.

A fractional CTO scope document is not a legal contract—it’s a operational blueprint. It answers four critical questions:

1. What decisions does this CTO own? (architecture, hiring, security, roadmap prioritisation)
2. What time commitment are you actually buying? (10 hours a week? 20? On-call coverage?)
3. What gets delivered, and how do we measure it? (shipped features, audit readiness, team velocity)
4. What triggers scope changes or rate adjustments? (new hires, new compliance requirements, new platforms)

At PADISO, we’ve run fractional CTO engagements for over 50 seed-to-Series-B startups and mid-market operators across Australia. This guide shares the scope template we use—the concrete structure, pricing patterns, and operational cadence that actually work.

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What a Fractional CTO Actually Does

Before you write a scope document, you need to know what role you’re actually filling.

A fractional CTO is not a staff engineer. They’re not a contractor writing code. They’re a part-time technical leader who owns decisions in three core domains:

Strategic Technology Leadership

The fractional CTO sets the technology direction. This includes platform choices, architectural patterns, build-versus-buy decisions, and the roadmap that connects engineering to revenue. They’re the person who says “we’re moving from a monolith to microservices because our transaction volume is hitting the limits,” or “we’re consolidating our stack from five tools to two because the operational overhead is killing our margin.”

This is not theoretical strategy. It’s the kind of thinking that the Umbrex fractional CTO playbook describes as “architecture, delivery governance, and cost optimisation”—the domains where a part-time leader can unlock 30% cost reductions or 4-week shipping cycles.

Team Building and Coaching

The fractional CTO hires, onboards, and coaches your engineering team. They set hiring criteria, conduct technical interviews, and mentor junior engineers. For startups without a VP Engineering, they often act as the de facto people leader for engineering—running 1:1s, setting performance expectations, and building the culture that makes people want to stay.

This is where fractional CTOs earn their fee. A well-hired engineer produces 2–3x the output of a poorly hired one. A coached team compounds. By month six, you’ve not just got a CTO—you’ve got a team that can operate independently.

Execution Accountability

The fractional CTO owns the shipping cadence. They set sprint goals, unblock technical debt, and make sure the roadmap is actually getting built. They’re the person who kills half-finished projects, says no to feature requests that don’t align with strategy, and pushes back on product scope that would blow the timeline.

This is where most fractional CTOs fail. They show up, give advice, and disappear. The good ones stay in the code, in the standups, and in the blockers. They own the outcome.

Security and Compliance Readiness

For any startup that’s going to raise Series A or land an enterprise customer, security is not optional. The fractional CTO builds audit readiness into the engineering process from day one. This means secure-by-default architecture, logging and monitoring from the start, and processes that survive a SOC 2 or ISO 27001 audit.

This is not a compliance exercise. It’s engineering discipline. A CTO who builds security in saves you 3–4 months and $50K+ when you actually run an audit.

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The PADISO Scope Template: Core Domains

Here’s the scope template we use for fractional CTO engagements at PADISO. It’s designed to be concrete, measurable, and operationally clear.

Domain 1: Technology Strategy and Architecture

What’s in scope:

• Platform and architecture decisions (monolith vs. microservices, serverless vs. containerised, databases, queues, caching)
• Build-versus-buy analysis for critical tools and infrastructure
• Technical roadmap for 6–12 months, with quarterly updates
• Technology stack recommendations and deprecation planning
• Cost optimisation across cloud, tooling, and infrastructure
• AI and automation readiness assessment—where agentic AI and workflow automation can unlock value

What’s not in scope:

• Day-to-day code reviews or pull request approvals (that’s the team lead’s job)
• Writing production code (unless it’s a proof of concept or critical blocker)
• Vendor management or contract negotiation (that’s often finance or ops)
• Marketing or sales-focused technical decisions (unless they affect the platform)

Success metrics:

• Technology decisions documented and socialised within 2 weeks of engagement start
• Quarterly roadmap updated and aligned with business goals
• Cost per transaction or per user trending down (target: 15–25% reduction in year one)
• Time-to-ship for new features trending down (target: 4-week cycle for major features)

Domain 2: Engineering Team Building and Coaching

What’s in scope:

• Hiring plan for next 6–12 months (headcount, roles, seniority)
• Job descriptions and hiring criteria for engineering roles
• Technical interview process design and interviewer training
• Onboarding process and documentation for new hires
• 1:1 coaching with engineers (typically 1–2 hours per week, depending on team size)
• Performance feedback and career development conversations
• Culture and values alignment for the engineering team

What’s not in scope:

• HR policy or compensation decisions (work with your People/Finance lead)
• Firing decisions (work with your CEO and People lead)
• Salary negotiations (that’s HR’s domain)
• Non-technical team building or social events

Success metrics:

• Time-to-productivity for new hires reduced to 2–3 weeks (from typical 6–8 weeks)
• Engineering team retention above 90% (industry benchmark is 75–80%)
• Internal promotion rate increasing (junior engineers moving to mid-level roles)
• Team velocity (story points or features shipped per sprint) increasing 10–15% per quarter

Domain 3: Delivery and Execution

What’s in scope:

• Sprint planning and goal-setting (typically 2-week sprints)
• Weekly standups and blocker resolution
• Technical debt management and refactoring time (typically 20–30% of capacity)
• Release planning and deployment processes
• Post-mortem analysis for incidents or missed deadlines
• Roadmap prioritisation and scope management

What’s not in scope:

• Product roadmap decisions (that’s Product’s job; CTO inputs but doesn’t own)
• Customer support or bug triage (that’s Support or Product)
• Marketing or sales enablement
• Project management tools or process setup (unless it’s engineering-specific)

Success metrics:

• On-time delivery rate above 85% for committed roadmap items
• Incident response time under 2 hours for critical issues
• Sprint velocity stable or increasing quarter-over-quarter
• Technical debt backlog tracked and trending down

Domain 4: Security, Compliance, and Governance

What’s in scope:

• Security architecture review and threat modelling
• Data protection and privacy-by-design principles
• Logging, monitoring, and alerting infrastructure
• Access control and secrets management
• Incident response process and runbooks
• Audit readiness (SOC 2, ISO 27001, GDPR) via Vanta implementation
• Security training and awareness for the team
• Compliance checklist and tracking

What’s not in scope:

• Legal or regulatory interpretation (work with your legal and compliance teams)
• Formal audit execution (that’s the auditor’s job)
• Insurance or risk management decisions
• Vendor security assessments (unless they directly impact your platform)

Success metrics:

• Security architecture documented and reviewed within 4 weeks
• 100% of critical vulnerabilities patched within 48 hours
• Audit readiness checklist at 80%+ completion by month 3
• Zero data breaches or security incidents attributable to engineering process gaps
• Team passes annual security training and awareness assessment

Domain 5: Technology Operations and Cost Management

What’s in scope:

• Cloud infrastructure optimisation (AWS, GCP, Azure cost reduction)
• DevOps and CI/CD pipeline design and optimisation
• Monitoring, alerting, and observability
• Disaster recovery and business continuity planning
• Infrastructure-as-code and automation
• Tooling and software licensing optimisation

What’s not in scope:

• Day-to-day infrastructure management (that’s DevOps or SRE)
• Vendor negotiations or procurement (that’s Finance or Ops)
• Non-technical operational decisions

Success metrics:

• Cloud costs trending down 20–30% within 6 months
• Deployment frequency increasing (target: daily or on-demand)
• Infrastructure uptime above 99.5%
• Incident detection and response time under 15 minutes for critical issues

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Pricing Models and Commercial Terms

Fractional CTO pricing varies wildly. We’ve seen engagements priced at $3K per month and $30K per month. The difference is usually clarity about what you’re buying.

Here’s how PADISO structures fractional CTO pricing:

Time-Based Retainer Model

This is the most common model. You pay a monthly retainer for a fixed number of hours per week.

Typical structure:

• 10 hours per week: $6K–$8K per month (good for pre-seed or very early stage, mostly strategic)
• 20 hours per week: $12K–$16K per month (seed stage, hands-on leadership and some execution)
• 30 hours per week: $18K–$24K per month (Series A, full-time equivalent leadership)
• 40 hours per week: $24K–$32K per month (full-time CTO, typically for interim or transition roles)

These ranges assume a fractional CTO with 10+ years of experience, based in Sydney or Australia, with a track record of shipping products and building teams. Rates scale up for specialists (AI strategy, security, platform engineering) and down for junior fractional CTOs or offshore resources.

Value-Based or Outcome-Based Pricing

Some engagements are priced on outcomes: cost reduction, time-to-ship, or audit pass.

Example structure:

• Base retainer of $10K per month
• Bonus of $5K if you hit 4-week shipping cycle by month 3
• Bonus of $10K if you pass SOC 2 audit readiness by month 6
• Bonus of $15K if you reduce cloud costs by 25%+ within 6 months

This aligns incentives but requires clear, measurable targets upfront. We use this model when the CTO’s success is directly tied to business outcomes.

Hybrid Model (Retainer + Equity)

For early-stage startups that can’t afford full retainer fees, we sometimes structure deals as:

• Reduced retainer: $3K–$5K per month
• Equity grant: 0.5–1.5% vesting over 4 years
• Performance bonus tied to milestones (Series A raise, first $1M revenue, etc.)

This works well when the CTO is genuinely invested in the startup’s success and the founder is committed to the partnership.

Project-Based or Milestone-Based Pricing

For discrete projects (platform redesign, security audit readiness, AI strategy workshop), we price by milestone:

• AI & Agents Automation assessment: $8K–$15K for 4-week engagement
• Security audit readiness: $15K–$25K for 8-week engagement
• Platform design and engineering for new feature: $20K–$40K depending on scope
• Venture studio co-build engagement: $50K–$150K+ depending on equity and timeline

What to Include in Your Scope Document

Your fractional CTO agreement should specify:

1. Monthly retainer amount and what it covers (hours per week, availability, on-call expectations)
2. Out-of-scope work and how it’s priced (e.g., “additional hours billed at $150/hour”)
3. Minimum engagement term (typically 3–6 months)
4. Notice period for termination (typically 30 days)
5. Adjustment triggers (e.g., “retainer increases 10% if headcount grows beyond 5 engineers”)
6. Deliverables and reporting (what you get each month, how success is measured)

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Operational Patterns and Engagement Cadence

A fractional CTO isn’t useful if they show up once a month for a strategy session. They need to be embedded in the rhythm of your business.

Here’s the operational cadence we recommend:

Weekly Touchpoints

Monday or Tuesday: Strategy and Priority Sync

• 30 minutes with founder/CEO
• Review last week’s outcomes
• Confirm this week’s top 3 priorities
• Unblock any critical issues

Wednesday or Thursday: Engineering Standups

• 15–30 minutes with engineering team
• Review sprint progress
• Identify blockers
• Discuss technical decisions or architecture questions

Friday: Retrospective and Planning

• 30 minutes with engineering team
• What shipped this week? What didn’t?
• Why? What’s the fix?
• What’s the focus for next week?

Bi-Weekly or Monthly Touchpoints

Sprint Planning (every 2 weeks or monthly)

• 1–2 hours with product and engineering
• Define sprint goals
• Size and prioritise work
• Confirm timeline and dependencies

1:1 Coaching (weekly or bi-weekly)

• 30–60 minutes with each engineer (if team is small) or team lead
• Career development, feedback, and growth
• Technical mentoring
• Performance and alignment

Board or Investor Update (monthly)

• 15–30 minutes preparing engineering update for board
• Shipping metrics, team health, technical risks
• This is typically the founder’s responsibility, but the CTO should provide the data

Quarterly Touchpoints

Strategy Review and Roadmap Planning

• 2–4 hours with founder, product, and engineering
• Review business progress and market shifts
• Update 6–12 month technology roadmap
• Reassess platform, architecture, and team size

Hiring and Talent Planning

• 1–2 hours to discuss next quarter’s hiring needs
• Update job descriptions and interview process
• Review pipeline and candidate progress

Security and Compliance Review

• 1–2 hours to review security posture
• Update audit readiness checklist
• Plan next quarter’s compliance work

On-Call and Emergency Access

Your fractional CTO should have a clear on-call policy:

• Critical incidents (data loss, security breach, complete outage): available within 1 hour
• Major incidents (partial outage, performance degradation): available within 4 hours
• Non-critical issues: available during normal business hours (9 AM–6 PM Sydney time)

This should be specified in your scope document and reflected in your retainer or as a separate on-call fee.

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Deliverables and Success Metrics

A fractional CTO engagement without clear deliverables is just expensive advice.

Here are the deliverables we commit to in every PADISO engagement:

Month 1: Assessment and Baseline

Deliverables:

• Technology audit report (current state of platform, team, processes)
• Architecture diagram and documentation
• Team assessment (skills, gaps, growth potential)
• Security posture assessment
• Cost analysis (cloud, tooling, infrastructure)
• 90-day action plan with priorities

Success metrics:

• Baseline established for all KPIs
• Team feels heard and understood
• Founder has clarity on top 3 technical risks

Months 2–3: Foundation and Quick Wins

Deliverables:

• Updated technology roadmap (6–12 months)
• First hire or promotion completed (if applicable)
• One major cost reduction or efficiency win shipped
• Security and audit readiness plan in place
• Engineering process documentation (sprint planning, code review, deployment)

Success metrics:

• Team velocity increasing 10%+ week-over-week
• First new hire onboarded and productive
• Cloud costs down 10–15%
• Audit readiness checklist at 40%+ completion

Months 4–6: Scaling and Embedding

Deliverables:

• Second major feature or platform improvement shipped
• Team size increased (1–2 new hires) or promoted
• Audit readiness at 70%+ completion
• Documented runbooks for key processes (deployment, incident response, security)
• Quarterly board update with engineering metrics

Success metrics:

• On-time delivery rate above 80%
• Team retention at 100% (no departures)
• Shipping cycle down to 3–4 weeks for major features
• Audit readiness on track for completion by month 8–10

Months 7–12: Independence and Transition

Deliverables:

• Team lead or VP Engineering hired (if appropriate)
• Audit readiness at 90%+ (ready for formal audit)
• 12-month technology roadmap with quarterly milestones
• Knowledge transfer documentation for all critical systems
• Transition plan for reduced CTO involvement (if applicable)

Success metrics:

• Team can operate independently on most decisions
• Audit pass (SOC 2, ISO 27001, or equivalent)
• Cost per transaction or per user down 25%+
• Revenue or customer growth on track with engineering capacity

Ongoing Reporting

Every month, your fractional CTO should provide:

1. Engineering metrics dashboard (velocity, cycle time, on-time delivery, team size)
2. Roadmap status (what shipped, what’s blocked, what’s next)
3. Team health update (retention, hiring progress, morale)
4. Risk and opportunity summary (top 3 technical risks, top 3 opportunities)
5. Financials (cloud costs, tooling costs, cost per transaction)

This should take 1–2 hours to compile and be delivered by the 5th of each month.

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Avoiding Common Scope Creep Traps

Scope creep kills fractional CTO engagements. Here’s how to avoid it.

Trap 1: “Can You Just Build This Feature?”

Your fractional CTO is not a contractor. They’re not there to write production code. But founders often ask them to “just build this one feature” because it’s faster than hiring someone.

The fix: Set a clear boundary. Your CTO can write proof-of-concepts, debug critical issues, or mentor junior engineers on a feature. But if they’re writing production code, they’re not leading. Set a policy: “CTO writes no more than 10% of production code; 90% is mentoring, code review, and architecture.”

Trap 2: “We Need You in Every Meeting”

Engineering leadership requires focus. If your CTO is in 20 hours of meetings per week, they’re not actually leading.

The fix: Define meeting attendance upfront. Your CTO should attend:

• Sprint planning and retrospectives
• Engineering standups (2–3 times per week, not daily)
• 1:1s with reports
• Strategic planning and board updates

They should skip:

• All-hands meetings (unless quarterly)
• Customer demos (unless critical)
• Sales calls (unless technical due diligence)
• Marketing or design meetings

Trap 3: “Can You Take Over HR for Engineering?”

Your CTO can hire and coach. But they shouldn’t be doing HR work like compensation, benefits, or performance management documentation.

The fix: Clarify what’s included in “team building.” Your CTO owns hiring, onboarding, 1:1 coaching, and performance feedback. HR owns compensation, benefits, policies, and formal performance documentation. Work together, but stay in your lanes.

Trap 4: “We’re Changing the Scope Because the Market Changed”

Markets change. Priorities shift. But if you’re changing the CTO’s scope every month, the engagement will fail.

The fix: Build in a quarterly review. Every 3 months, revisit the scope with your CTO. What’s working? What’s not? What’s changed in the market? Then update the scope and adjust the retainer if needed. But don’t change it month-to-month.

Trap 5: “You’re the CTO, So You Own Product Too”

Product and engineering are different functions. Your CTO should input on product decisions, but they shouldn’t own the roadmap.

The fix: Define the boundary clearly. Your CTO owns:

• Technical feasibility and timeline
• Architecture and platform implications
• Team capacity and velocity

Your Product lead owns:

• Customer needs and market fit
• Feature prioritisation and sequencing
• Success metrics and business impact

They should collaborate, but the CTO’s job is to say “yes, we can build that in 4 weeks” or “no, that would break the platform.” Not to decide whether it’s worth building.

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Security, Compliance, and Governance in Scope

Security is not a separate function. It’s embedded in everything your CTO does.

Here’s how we integrate security into fractional CTO engagements:

Month 1: Security Baseline

• Threat model the current platform
• Identify critical vulnerabilities or gaps
• Review data flows and access controls
• Assess team security maturity
• Document compliance requirements (SOC 2, ISO 27001, GDPR, etc.)

Months 2–3: Security Foundation

• Implement secure-by-default architecture for new features
• Set up logging and monitoring infrastructure
• Establish secrets management and access control
• Create incident response runbook
• Begin Vanta implementation for audit readiness

Months 4–6: Security Embedding

• Security review process for all code and architecture
• Regular penetration testing or vulnerability scanning
• Security training and awareness for the team
• Audit readiness checklist at 70%+
• Incident response drills and post-mortems

Months 7–12: Compliance and Audit

• Formal SOC 2 or ISO 27001 audit readiness
• Documentation and evidence collection
• Third-party security assessments
• Continuous compliance monitoring and improvement

This is not a compliance project. It’s engineering discipline. A CTO who builds security in saves you months and tens of thousands of dollars when you actually run an audit.

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Real-World Examples from PADISO Engagements

Here’s how the PADISO fractional CTO scope template works in practice:

Example 1: Series A Fintech Startup (20 Hours/Week, $14K/Month)

Background: Founder and one engineer, $2M revenue, raising Series A, need to scale engineering and pass SOC 2.

Scope:

• Architecture review and platform modernisation (monolith to microservices)
• Hiring plan for 3 engineers over 6 months
• Security audit readiness via Vanta
• Cost optimisation (AWS)
• Weekly standups and bi-weekly 1:1s

Results (6 months):

• Hired 2 engineers (3rd in progress)
• Shipped new payment processing platform (4-week cycle)
• Cloud costs down 22%
• SOC 2 audit readiness at 85% (on track for audit in month 8)
• Team velocity doubled
• Series A raised at $15M valuation

Example 2: Mid-Market B2B SaaS (30 Hours/Week, $20K/Month)

Background: 15 engineers, $5M ARR, need fractional VP Engineering to modernise platform and improve delivery.

Scope:

• Technology roadmap and platform strategy
• Engineering process and sprint management
• Team structure and hiring for 5 new roles
• Technical debt and refactoring
• AI and automation readiness assessment

Results (6 months):

• Hired 3 engineers (2 in progress)
• Shipped AI-powered feature that improved customer retention by 8%
• On-time delivery rate improved from 65% to 88%
• Technical debt backlog reduced by 40%
• Cost per customer improved by 15%
• Team morale survey improved from 6.2 to 7.8 out of 10

Example 3: Early-Stage Marketplace (10 Hours/Week, $6K/Month + 0.5% Equity)

Background: Non-technical founder, one junior engineer, pre-seed, need strategic technology guidance and team building.

Scope:

• Technology stack recommendations
• Hiring plan for first senior engineer
• MVP roadmap and architecture
• AI and automation opportunities
• Quarterly strategy reviews

Results (12 months):

• Hired first senior engineer (who became tech lead)
• Shipped MVP in 14 weeks
• Raised $500K seed round
• Team scaled to 3 engineers
• Platform handles 10K+ transactions per day
• Transitioned to reduced CTO involvement (5 hours/week)

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How to Implement the Template in Your Organisation

Ready to hire a fractional CTO? Here’s the step-by-step process we recommend.

Step 1: Define Your Needs (Week 1)

Before you talk to any CTO, answer these questions:

1. What’s your biggest technical challenge? (shipping speed, team building, security, cost, platform modernisation)
2. How many engineers do you have? (helps determine CTO seniority and time commitment)
3. What’s your budget? (be realistic; $3K/month gets you strategic advice; $15K+ gets you hands-on leadership)
4. What’s your timeline? (3-month sprint? 12-month transformation? Ongoing support?)
5. What does success look like? (4-week shipping cycle? Audit pass? Team of 5? $50K cost savings?)

Write these down. This is your brief.

Step 2: Find the Right CTO (Weeks 2–3)

Where to look:

• Referrals from founders or investors (best source; ask your network)
• Fractional CTO platforms (Upwork, Toptal, Catalant, etc.)
• Venture studios or agencies (like PADISO; we often embed fractional CTOs in our engagements)
• Angel networks or founder communities (YC, Antler, local startup groups)

What to look for:

• 8+ years of engineering experience (not 3–4)
• Track record of shipping products (not just consulting)
• Team-building experience (hiring, mentoring, culture)
• Security and compliance knowledge (increasingly critical)
• Willingness to commit to your business (not juggling 5 other clients)

Step 3: Scope Conversation (Week 3–4)

When you talk to potential CTOs, use this conversation template:

1. Tell them your business. Revenue, customers, growth, market.
2. Tell them your technical challenge. What’s broken? What’s slowing you down?
3. Show them your current state. Team size, tech stack, architecture, processes.
4. Ask what they’d do. How would they approach your challenge? What’s the first 90 days?
5. Discuss scope and time. How many hours per week? What’s in scope? What’s not?
6. Discuss pricing and terms. Monthly retainer? Equity? Performance bonus? Minimum term?

Don’t just accept their standard offer. Negotiate. Most fractional CTOs are flexible on time, scope, and pricing if you’re clear about your needs.

Step 4: Draft the Scope Document (Week 4)

Use the PADISO template in this guide. Your scope document should include:

1. Engagement overview (duration, retainer, time commitment)
2. Scope domains (what’s in scope, what’s not, using the five domains above)
3. Deliverables (what you’ll get each month, what success looks like)
4. Operational cadence (weekly standups, monthly reporting, etc.)
5. Commercial terms (retainer amount, payment schedule, notice period)
6. Adjustment triggers (when retainer might increase or decrease)

Keep it to 2–3 pages. It’s not a legal contract; it’s a working document.

Step 5: Kick Off and Embed (Week 5+)

First week:

• Full-day onboarding (technology audit, team introductions, codebase walkthrough)
• Weekly sync scheduled (same time every week)
• Slack or communication channel set up
• Access to systems, repositories, and infrastructure

First month:

• Complete the Month 1 assessment
• Identify top 3 priorities
• Start weekly standups and 1:1s
• Begin Month 2 planning

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Integrating Your Fractional CTO with PADISO Services

If you’re working with a fractional CTO, you might also need support in related areas. PADISO offers several complementary services:

AI & Agents Automation

Your fractional CTO can assess where AI and automation will unlock value. PADISO’s AI & Agents Automation service takes that assessment and builds it. We work with your CTO to design and ship AI-powered features, workflow automation, or agent-based systems that improve customer experience or reduce operational cost.

Typical engagement: 4–12 weeks, $20K–$80K depending on scope.

Security Audit (SOC 2 / ISO 27001)

Your CTO builds security into the process. PADISO’s Security Audit service via Vanta gets you audit-ready in 8–12 weeks. We work alongside your CTO to implement logging, monitoring, access control, and documentation that survives an audit.

Typical engagement: 8–12 weeks, $15K–$30K depending on current state.

Platform Design & Engineering

If your CTO identifies a major platform redesign or modernisation, PADISO’s Platform Design & Engineering service executes it. We work with your CTO and team to design the new architecture, build the foundation, and hand over a system your team can scale.

Typical engagement: 8–16 weeks, $40K–$150K depending on scope.

Venture Studio & Co-Build

If you’re a non-technical founder or domain expert, PADISO’s Venture Studio & Co-Build service pairs you with a fractional CTO and engineering team to build your startup from idea to MVP to scale. We co-own the technical direction and team building.

Typical engagement: 12–24 months, equity-based or hybrid retainer + equity.

For guidance on how to structure your engagement with external partners, review our AI Agency Contract Template and AI Agency Proposal Template resources.

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Common Questions About Fractional CTO Scope Documents

Q: How long should a fractional CTO engagement be?

A: Minimum 3 months (to establish baseline and deliver quick wins), typical 6–12 months (to build team and embed processes), some ongoing (quarterly strategy reviews, continued coaching). We recommend starting with 6 months and then deciding if you want to extend, reduce, or transition to a full-time CTO.

Q: What if our scope changes mid-engagement?

A: It will. Markets shift, priorities change, new opportunities emerge. Build in a quarterly review (every 3 months) to reassess scope and adjust the retainer if needed. But don’t change it month-to-month; that creates chaos.

Q: Can we start with 10 hours/week and scale to 20 hours/week?

A: Yes. This is actually a good approach for early-stage teams. Start with 10 hours/week ($6K–$8K/month) for strategic guidance and hiring. After 2–3 months, if you’ve hired your first engineer, scale to 20 hours/week ($12K–$16K/month) for hands-on execution. Make it explicit in your scope document: “Retainer scales to $X if headcount reaches Y.”

Q: What if our CTO isn’t delivering?

A: Address it in the first month. If the CTO isn’t showing up to standups, isn’t engaged, or isn’t delivering the Month 1 assessment, say so. Most fractional CTOs are flexible and will adjust. If they won’t, end the engagement. A bad fractional CTO is worse than no CTO at all.

Q: Do we need a formal contract?

A: Yes. Work with your lawyer to document the scope, retainer, term, notice period, IP ownership, and confidentiality. Keep it simple (2–3 pages), but make it binding. This protects both sides.

Q: Can we hire the fractional CTO full-time later?

A: Sometimes. If it’s working well and you’ve raised Series A, you might offer them a full-time role. But be clear upfront: fractional engagements are not automatic paths to full-time employment. If you want that option, discuss it during the scope conversation.

Q: What if we can’t afford a fractional CTO?

A: Start smaller. Hire a technical advisor (5–10 hours/month, $1K–$2K/month) for strategic guidance. Or look for a junior fractional CTO or engineering mentor (cheaper, less experienced, but still valuable). Or join a venture studio that embeds a CTO as part of the program.

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Next Steps and Getting Started

If you’re ready to hire a fractional CTO, here’s your action plan for the next 30 days:

Week 1:

• Answer the five questions in Step 1 above
• Write down your top 3 technical challenges
• Define success metrics (what does a win look like?)

Week 2:

• Start recruiting (referrals, platforms, agencies)
• Interview 3–5 potential CTOs
• Check references and past work

Week 3:

• Have scope conversations with your top 2 candidates
• Negotiate on time, scope, and pricing
• Draft a scope document together

Week 4:

• Finalise the scope document
• Get legal review
• Sign the agreement
• Schedule your first week of onboarding

Week 5+:

• Begin onboarding and Month 1 assessment
• Establish weekly rhythms and reporting
• Start shipping

Final Thoughts

A fractional CTO is not a silver bullet. They won’t fix a broken product, a misaligned team, or a failed market fit. But for a founder or operator who has product-market fit and needs technical leadership to scale, a well-scoped fractional CTO can compress 18 months of growth into 6 months.

The key is clarity. Write the scope down. Agree on deliverables. Measure progress. Adjust quarterly. And stay focused on outcomes: shipped features, hired engineers, passed audits, reduced costs, faster shipping.

If you’re a Sydney-based startup or mid-market team looking for fractional CTO support, PADISO can help. We’ve embedded fractional CTOs in 50+ companies, shipped 100+ features, and helped teams pass SOC 2 and ISO 27001 audits. We know what works.

Ready to get started? Check out our services or review our case studies to see how we’ve helped other founders and operators.

Or if you want to dive deeper into fractional CTO best practices, explore the Umbrex fractional CTO playbook, which outlines the scope domains and governance patterns we use. For a CEO’s perspective on fractional CTO ROI, Particle41’s guide is invaluable. And if you’re a startup evaluating fractional CTO options, this complete hiring guide walks through expectations and selection criteria.

Your fractional CTO engagement is only as good as your scope document. Get that right, and you’ve got a partnership that compounds. Get it wrong, and you’ve got an expensive advisor who disappears when you need them most.

Use the PADISO template. Be specific. Measure outcomes. Adjust quarterly. And ship.