Fractional CFO for developer tools companies
Developer tools grow bottoms-up, with free or open-source tiers feeding paid team and enterprise plans. Pricing layers seats, consumption (builds, runs, requests, compute) and sometimes hosting, and the infrastructure cost behind free usage can be substantial enough to materially affect gross margin if it's not made visible.
Free-tier infrastructure cost loads into gross margin reporting transparently rather than hiding in a blended COGS number, and the funnel from free usage through team adoption to enterprise contract is tracked as the primary growth engine. Open source contribution costs report as R&D rather than operations.
Flow provides financial modelling, FP&A and fractional CFO advisory to developer tools companies across code hosting and CI/CD, observability and APM, testing and QA tooling, API platforms and infrastructure, and AI-assisted development tools. We work as the outsourced startup CFO through growth, fundraising and sale processes.
KPIs to track for "developer tools" startups
We're very 'KPI-driven' fractional CFOs, and we make sure to monitor the right metrics for your startup.
ARR
Paid seats
Free users / signups
Free-to-paid conversion
Net retention
Consumption revenue
Free-tier infra cost
Gross margin
CAC payback
Active orgs
Financial modelling for "developer tools" startups
As fractional CFOs, we build KPI-driven financial models that are insightful and easy to maintain.
Financial modelling is both art and science - models must be robust, but also understandable, and useful for both internal planning and VC fundraising purposes. Hire a fractional CFO who knows how to handle both sides of the equation.
Free-to-paid funnel
Signups through active free use, team activation and enterprise conversion tracked as the primary growth engine with conversion rates per cohort. Surfaces which entry surfaces and product moments are actually feeding paid ARR.
Free-tier infrastructure cost
Infrastructure cost behind the free tier loaded transparently into gross margin reporting per user cohort and product surface. Stops the cost of supporting heavy free usage from disappearing into a blended COGS line.
Seat plus consumption model
ARR built across seat subscription and consumption (builds, runs, requests, compute) modelled separately because they retain and expand differently. Aggregating them masks whether growth is coming from new seats or heavier usage on existing accounts.
Net retention by motion
Self-serve, team-led and enterprise motions reported as separate retention curves with their own expansion and contraction drivers. The team-to-enterprise conversion is tracked as a distinct expansion path with its own conversion rate.
Open source and R&D allocation
Open source contribution costs reported as R&D investment with attribution to maintainership, documentation and security upkeep rather than buried in operations. Clarifies what the company actually spends on the OSS engine driving adoption.
Cap table and option pool
Pre/post-money cap table with SAFE conversions, option pool top-ups for an engineering-heavy hiring plan and waterfall scenarios. Founders see dilution including the option-pool refresh investors will require at the next round.
Founders and investors we've worked with
We've supported winning builders across developer tools and beyond.
Marcura
We acted as fractional CFO to Dubai-based Marcura, owner of maritime payroll and B2B payments platform MarTrust, advising on the strategic e-Wallet vendor selection and supporting product/finance integration.
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Hector
We acted as fractional CFO to Hector Aurumi, a Dubai-based specialist software house with AI/ML, IoT and data science expertise, providing confidential valuation guidance to the management team.
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Testim
As a fractional CFO we performed a confidential valuation of Testim, a Tel Aviv-based AI-based software testing automation platform, supporting Elevator Fund's portfolio management.
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Panorays
As a fractional CFO we performed a confidential valuation of Panorays, a Tel Aviv-based software platform for third-party security management, supporting Elevator Fund's portfolio management.
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Percepto
As a fractional CFO we performed a confidential valuation of Percepto, a Tel Aviv-based autonomous drone monitoring platform for critical infrastructure and industrial sites, supporting Elevator Fund's portfolio management.
See moreRecent fractional CFO track record
See our fractional CFO and financial modelling experience across developer tools and beyond.
Simple pricing
No hidden costs, no complicated long-term contracts. We understand how important flexibility is for developer tools startups.
Per month
- Accounting / FP&A tech stack implementation
- Monthly financial statements and reporting pack
- Quarterly board pack with detailed financial analysis (with variance analysis vs. budget, relevant KPI observations etc.)
- Investor-friendly output
Per month
- Everything in Core, plus
- Operating model (via an online platform like Runway or Excel-based)
- Ongoing model maintenance, refining projections, burn/runway management
- Customer cohorts modelling, churn and retention analysis
- LTV / CAC, unit economics analysis
- Cap table management
Per month
- Everything in Grow, plus
- M&A / fundraising support; review of business plan
- Pitch deck preparation
- Investor approach strategy / list building
- Due diligence support and deal negotiation
- Valuation as required and free access to Multiples Pro
Packages shown are illustrative, final pricing is tailored to client requirements.
Explore our fractional CFO offering for similar verticals
We're a specialized fractional CFO to software companies.
Our fractional CFO experience spans across all software verticals.
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We know tech inside & out.
We provide fractional CFO services to companies operating across the entire tech.
More services
We help you scale by providing fractional CFO advice, through fundraising and a successful M&A exit.
VC fundraising for developer tools companies
We help you prepare materials, reach out to investors in our extensive network, negotiate fair term sheets and structure the VC round.
Learn moreM&A for developer tools companies
We advise winning tech companies on M&A exits, and over the years successfully executed numerous transactions with both financial and strategic buyers.
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