Fractional CFO for design & engineering software companies

CAD, EDA, BIM and PLM businesses carry a long tail of on-premise customers transitioning to subscription, and the accounting of that transition matters more than most operators realise. Revenue trajectory, deferred revenue and gross margin all move depending on how the licence-to-subscription journey is staged.

Maintenance revenue is reported distinctly from new SaaS bookings throughout the transition, with seat conversion, edition mix and cloud penetration tracked as leading indicators. Marketplace or content-store revenue gets reported separately rather than pulled into recurring metrics it doesn't belong inside.

Flow provides financial modelling, FP&A and fractional CFO advisory to design and engineering software companies across CAD, CAM and CAE, EDA and chip design, BIM and architectural software, product lifecycle management, and creative and 3D content tools. We work as the outsourced startup CFO through growth, fundraising and sale processes.

Marcura
Hector
Testim
Panorays
Percepto
Brew
BetterQA
Voereir
TBô
Onlogist
Bonart
Cannadorf
Cannabis Innovation Center
Seagull Maritime
Moburst
Lemonade
Selina
BiomX
Dataprana
Radtonics
Marcura
Hector
Testim
Panorays
Percepto
Brew
BetterQA
Voereir
TBô
Onlogist
Bonart
Cannadorf
Cannabis Innovation Center
Seagull Maritime
Moburst
Lemonade
Selina
BiomX
Dataprana
Radtonics
Marcura
Hector
Testim
Panorays
Percepto
Brew
BetterQA
Voereir
TBô
Onlogist
Bonart
Cannadorf
Cannabis Innovation Center
Seagull Maritime
Moburst
Lemonade
Selina
BiomX
Dataprana
Radtonics

KPIs to track for "design & engineering software" startups

We're very 'KPI-driven' fractional CFOs, and we make sure to monitor the right metrics for your startup.

Subscription ARR

Cloud seat penetration

Net retention

Paid seats

ARPU per seat

Edition mix

Maintenance revenue

Gross margin

Logo retention

CAC payback

Financial modelling for "design & engineering software" 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.

Licence-to-subscription transition

Maintenance revenue, perpetual licence wind-down and new SaaS bookings modelled distinctly with cohort-level conversion rates and deferred revenue trajectory. The optics of the transition move ARR, gross margin and deferred all at once.

Seat conversion & edition mix

Cloud seat penetration and edition mix tracked as the two leading indicators of subscription health, with ARPU walked between editions. Shows whether the recurring base is growing in volume or shifting up the price ladder.

Marketplace & content-store revenue

Marketplace, asset-store and content-store revenue reported separately rather than pulled into recurring metrics they don't belong inside. Their margin and durability differ enough that contaminating ARR distorts both the multiple and the cohort.

Subscription ARR waterfall

Bookings to billings to recognised subscription revenue, with maintenance, services and licence carved out. Translates a still-mixed P&L into the metric investors actually price the business on.

NDR & GRR cohorts

Net and gross retention measured cohort by cohort for subscription seats, with upsell from edition and module separated from net new logos. Tells you whether the installed base is compounding or churning under the conversion.

CAC payback by segment

Fully-loaded CAC and payback by enterprise, mid-market and prosumer, with field and self-serve carved out. A blended payback number in this category usually hides one segment subsidising another.

Recent fractional CFO track record

See our fractional CFO and financial modelling experience across design & engineering software and beyond.

Simple pricing

No hidden costs, no complicated long-term contracts. We understand how important flexibility is for design & engineering software startups.

Core£4,000

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
Grow£8,000

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
Pro£12,000

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.

AI & MLFintechConsumer internetDigital mediaE-commerce & marketplacesConsumer productsMobilityDigital healthIndustrial technologyDigital infrastructureIT services

More services

We help you scale by providing fractional CFO advice, through fundraising and a successful M&A exit.

VC fundraising for design & engineering software companies

We help you prepare materials, reach out to investors in our extensive network, negotiate fair term sheets and structure the VC round.

Learn more

M&A for design & engineering software companies

We advise winning tech companies on M&A exits, and over the years successfully executed numerous transactions with both financial and strategic buyers.

Learn more

Talk to us

Schedule a call to get a health check on your business and see how we could help.

Fractional CFO

Stages

Countries

Cities

Sectors

© 2026 Flow Partners (London) Ltd. All rights reserved. Registered as a limited liability company in England and Wales (registered number 12969521).