01
Architecture audit and upgrade plan
An honest list of what's holding you back, what's fine, and the order to fix it in.
MVP → SaaS Upgrade
Upgrade your MVP to SaaS without starting over
People already use your product, but the code wasn't built for the next stage. We upgrade it in stages, covering customer accounts, billing, permissions, and monitoring, while your team keeps shipping.
In stages, while you keep shipping
Engagement commitments
- No full rewrite by default
- Your roadmap keeps moving
- Runbooks your team can own
Architecture audit
Your upgrade plan
What you get after a free 30-minute look at your code.
- Current state
- What's solid, and what's holding you back
- Order
- Ranked by benefit, risk, and who it affects
- Stages
- Three or four, each shippable on its own
- What stays
- The early decisions worth keeping
We only rebuild a part when keeping it would cost more
Week 1
Accelerated by
Cursor
Kiro
Copilot
Antigravity
ReplitFrontier LLMs
CursorKiroCopilotAntigravityReplitFrontier LLMs
What you get
Upgrades rolled out gradually, with a way back at every step
Every upgrade produces the same set of deliverables, and they're yours to keep.
Your team keeps shipping features throughout the upgrade.
02
Tenancy migration
Each customer's data moved into its own separate account space (tenancy), with every database query scoped to the right customer. Rolled out gradually, checked, then made the default.
03
Billing that handles real customers
Plans, seats, prorated charges, trials, and what happens when a payment fails.
04
Roles and permissions
Owner, admin, and member roles, enforced on the server, with the interface following those rules.
05
Monitoring and alerts
Error tracking, readable logs, and alerts that tell you something useful. In place before more paying customers arrive.
06
Tests for future changes
Automated tests on the paths that matter, so your team can keep shipping safely after we finish.
The process
How the upgrade runs
- 01
Architecture audit
A 30-minute look at the code, then a written plan within 48 hours: what to fix, in what order, and what to leave alone.
- 02
Stage 1: the riskiest fix
The highest-risk change goes first, usually accounts or billing, rolled out gradually behind a feature flag.
- 03
Stages 2-3: the rest
Each piece ships on its own, is tested with real usage, and only becomes the default once it's proven.
- 04
Handoff and runbooks
How it fits together, why we made each decision, and what to do about the problems most likely to come up.
Your quote lists every stage, what it includes, and its dates.
See our client workBefore and after
What changes between an MVP and a real SaaS product
Switch between the two views. These are the foundations every upgrade touches, before and after.
Login and roles
One list of users, with a single hard-coded admin.
Data model
One shared set of tables, with nothing tying records to a customer.
Billing
Stripe Checkout for a single plan.
Monitoring
Errors show up in the console, or in a customer email.
Testing
Manual testing, and the occasional broken release.
In stages
each one ships on its own
No freeze
your team keeps shipping features
Reversible
every step can be rolled back
Client results
Results from our client work
AtlasPulse
Median time-to-release down from 9.1 to 5.1 days (44% faster) after we reworked how four squads release.
Read the AtlasPulse storySLO
Incidents resolved 38% faster, and test coverage on critical paths up from 40% to 78%, during a phased modernization.
Read the SLO storyClipFlow
Trial-to-paid up from 12% to 23% after we rebuilt onboarding for new customers.
Read the ClipFlow storyMetrics reflect specific client engagements and project scope.
Pricing
What it costs, and how we quote it
The price depends on how many foundations we touch. After a free 30-minute code review, you get a fixed quote for each stage. Ongoing work after the upgrade runs on Growth Partner, from $2,999/mo.
See our starting pricesFocused upgrade
One or two stagesFixed quote after scoping
One or two foundations, usually accounts or billing. Quick and targeted.
- Architecture audit
- One stage, rolled out gradually
- Handoff and runbook
Most chosen
Full MVP to SaaS upgrade
Larger builds: usually 4-10 weeks, in stagesFixed price per stage
The usual choice. Accounts, billing, permissions, and monitoring, in stages, with no feature freeze.
- Everything in Focused upgrade
- All four foundations
- Automated tests on critical paths
- 30-day post-upgrade support
Upgrade and ongoing development
Monthly after the upgradeFrom $2,999/mo
The full upgrade, then ongoing work alongside your team as you grow.
- Everything in the full upgrade
- Weekly releases with your team
- Input on your roadmap
What affects the price
- Account complexity
- One account per company is quick. Companies with teams inside teams take longer.
- Billing model
- One flat price is quick. Seats, usage-based pricing, and prorated charges take the most time.
- Existing tests
- If there are no tests, we write them as part of the job. That adds time, and we won't skip it.
- Stack age
- Sometimes older dependencies need updating first. We'll tell you on the first call.
A free 30-minute code review. Fixed scope, billed per stage, and no surprise invoices.
FAQ
MVP to SaaS Upgrade Path FAQ
How do you upgrade tenancy without downtime?
Tenancy is how your product keeps each customer's data separate. We change the data structure first, copy existing records into the new shape, and keep the old path working while both run side by side. Then we move customers over in small batches behind a feature flag, so any step can be reversed. We plan every step to avoid downtime and agree a rollback plan before each one.
What if our MVP is genuinely that bad?
Sometimes one part does need rebuilding, and we'll tell you. It's rare that a whole codebase is beyond saving. Usually one or two areas cause most of the problems, and fixing those first gets you moving again.
Can we keep shipping features during the upgrade?
Yes, and you should. That's the point of working in stages. Freezing features halfway through is how teams end up in a rewrite.
What if we already tried and it's half-done?
That's common. We pick it up wherever it is, update the plan so it makes sense again, and finish it without redoing what already works.
What stack do you work in?
Postgres with Node or Python is where we're strongest, but we'll work with what you have. If something in your setup makes the upgrade harder, we'll tell you on the first call.
How do we start?
Book a free 30-minute look at your code. You get a written upgrade plan within 48 hours, and a senior engineer answers your questions along the way.
Free first call
Tell us where your MVP is holding you back
Send us access to the code and a little context. You'll get a free written upgrade plan within 48 hours, and a senior engineer will answer questions within one business day. No call needed unless you want one.
Know what you need
Send a short brief. A senior engineer reads it and replies with questions or a suggested next step.
Need help scoping
Book a free 20-minute call. We’ll work out the scope together. No sales pitch, and if you don’t need us, we’ll say so.Book a call
Prefer a written response? Send the team a message.