Firebase to Supabase Migration · Leeds
Firebase to Supabase Migration in Leeds
Moving Leeds applications from Firebase to Supabase, where the access rules have to be rewritten as database policies. Firestore rules and PostgreSQL row-level security both decide who sees what and express it entirely differently — and a policy that is subtly too permissive exposes data without producing any error at all.
Why this comes up
The problem
Security rules were reimplemented as row-level policies and one of them returns rows it should not.
What you get
What we deliver
- Every security rule translated to a row-level policy and tested individually
- Policies verified negatively, by confirming forbidden reads actually fail
- Denormalised collections restructured into relational tables where appropriate
- Users migrated with their credentials rather than forcing everyone to reset
- Storage objects moved with their access rules reproduced
- Real-time subscriptions rebuilt, since the two models differ in behaviour
Want this scoped for your business in Leeds?
Thirty minutes, no charge, no sales script. You leave with a written summary of what firebase to supabase migration would actually involve — whether or not you use us.
Working in Leeds
Yorkshire & the Humber
Leeds is the largest financial and legal centre outside London and a major digital health hub, so compliance, audit trails and data handling tend to be first-order requirements here rather than afterthoughts.
Financial, legal and health clients dominate, so the work almost always carries compliance, audit and data-handling requirements from day one.
Sectors we work with in Leeds
- Financial & Legal Services
- Healthcare & Digital Health
- Retail
- Higher Education
What we work with
Technologies and platforms
- Supabase
- PostgreSQL
- Firebase
- TypeScript
Who we work with
Industries we serve
- SaaS businesses
- Mobile app businesses
- Startups
- Education
- Health and fitness
Why us
Why Leeds businesses choose Asionis
- Projects typically launched within 4–8 weeks
- No long-term contracts required
- All team members UK-based
- Dedicated account manager and development team
- Transparent reporting with monthly performance metrics
- Scalable from startup to enterprise
How we work
- Step 1
Free consultation
A 30-minute call to understand the problem. You keep the written summary either way.
- Step 2
Proposal
Scope, timeline and a fixed price, in writing, before anything starts.
- Step 3
Build
Short cycles with regular check-ins, so you see progress rather than hear about it.
- Step 4
Launch and support
We handle the go-live and stay available afterwards.
Other services in Leeds
Looking for the full picture? See our Firebase to Supabase Migration services, everything we do in Leeds or browse everything we do.
Firebase to Supabase Migration in Leeds — common questions
- Why is the security translation risky?
- Because a mistake is silent. An overly broad policy returns data rather than raising an error, so nothing in testing indicates a problem — which is why each policy needs a test that asserts a user cannot read what belongs to somebody else.
- Should the data structure change?
- Usually somewhat. Firestore rewards denormalisation because joins are unavailable, whereas PostgreSQL handles relationships natively — so duplicated data maintained by hand can often become a single normalised record, which removes a class of consistency bugs.
- Do users have to reset passwords?
- Not necessarily. Firebase password hashes can be imported with the right parameters, which avoids asking every customer to reset — establishing whether that path is available is worth doing early, because the alternative costs active users.
- How does real-time differ?
- Supabase publishes database changes rather than document snapshots, so the shape of what arrives is different. Application code listening for updates needs rewriting rather than reconfiguring, and behaviour under reconnection deserves testing specifically — a client that missed changes while offline has to reconcile its state on returning, and Firestore handled a good deal of that quietly on your behalf.
- Do you work with businesses across West Yorkshire?
- Yes. We are based in Leicester, United Kingdom and work with clients throughout Yorkshire & the Humber, including Leeds and the surrounding West Yorkshire area. Most collaboration happens remotely, and we travel for kick-offs and key milestones.
- What kind of Leeds businesses do you usually work with?
- Financial, legal and health clients dominate, so the work almost always carries compliance, audit and data-handling requirements from day one. Beyond that we work across Financial & Legal Services, Healthcare & Digital Health, Retail and Higher Education.
- Do you cover the areas around Leeds?
- Yes — we work throughout Yorkshire & the Humber, including Sheffield, Manchester, York, Newcastle. Leeds is an urban area of roughly 800,000+, and we take on work across the wider West Yorkshire region rather than the city boundary alone.
Talk to us about Firebase to Supabase Migration in Leeds
A 30-minute call with someone who would actually work on it. No sales script, no obligation.
- Projects typically launched within 4–8 weeks
- No long-term contracts required
- All team members UK-based
- Dedicated account manager and development team
- Transparent reporting with monthly performance metrics
- Scalable from startup to enterprise