Firebase to Supabase Migration · Coventry
Firebase to Supabase Migration in Coventry
Moving Coventry 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 Coventry?
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 Coventry
West Midlands
Coventry's automotive and mobility research base means a lot of local firms sit in complex supply chains, where the useful software is usually the piece that connects systems nobody planned to connect.
Supply chain integration dominates — connecting order, quality and delivery data between manufacturers and the tiers above and below them.
Sectors we work with in Coventry
- Automotive
- Advanced Manufacturing
- Higher Education
- Logistics
- Gaming
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 Coventry 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 Coventry
Looking for the full picture? See our Firebase to Supabase Migration services, everything we do in Coventry or browse everything we do.
Firebase to Supabase Migration in Coventry — 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 Midlands?
- Yes. We are based in Leicester, United Kingdom and work with clients throughout West Midlands, including Coventry and the surrounding West Midlands area. Most collaboration happens remotely, and we travel for kick-offs and key milestones.
- What kind of Coventry businesses do you usually work with?
- Supply chain integration dominates — connecting order, quality and delivery data between manufacturers and the tiers above and below them. Beyond that we work across Automotive, Advanced Manufacturing, Higher Education, Logistics and Gaming.
- Do you cover the areas around Coventry?
- Yes — we work throughout West Midlands, including Birmingham, Leicester, Northampton, Wolverhampton. Coventry is an urban area of roughly 370,000+, and we take on work across the wider West Midlands region rather than the city boundary alone.
Talk to us about Firebase to Supabase Migration in Coventry
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