Row-Level Security policy gaps
Missing RLS policies expose multi-tenant data across user boundaries. We treat RLS as a first-class architecture concern, write policies in code, and test them with dedicated test suites.
Postgres RLS Realtime Edge Functions
Supabase Development Services for Postgres-Backed App Backends
A production-grade Postgres backend with Auth, Realtime subscriptions, Edge Functions and S3-compatible Storage — open-source and self-hostable. Row-Level Security keeps multi-tenant data isolated at the database layer. EU data residency for GDPR-compliant apps without compromise.
We build Supabase backends for FinTech, logistics and consumer apps where Postgres is the right data model and open-source control matters. Supabase combines a managed Postgres instance with a PostgREST API, JWT-based Auth, Realtime subscriptions over WebSocket, Deno Edge Functions and file storage in a single project. Row-Level Security policies enforce multi-tenant data isolation at the database layer — no application-layer filter can bypass them. For EU clients, we deploy on EU Supabase regions and implement GDPR data subject rights via Edge Functions.
Challenges
Industry challenges we solve
Realtime broadcast overhead
Supabase Realtime broadcasts changes to all connected clients. At high message rate, unfiltered channels add latency and bandwidth. We filter channels to the minimum data required per user session.
Edge Function cold-start
Deno Edge Functions cold-start in 50–200 ms. For latency-sensitive paths, we keep functions warm and design the client to tolerate startup delay for non-critical requests.
Auth JWT expiry and refresh edge cases
Expired sessions cause silent API failures when the client does not handle token refresh correctly. We implement auto-refresh with retry logic and graceful logout on non-recoverable auth errors.
Database migration management
Supabase migrations run on the hosted Postgres instance. Schema changes that require lock acquisition can block reads on high-traffic tables. We use zero-downtime migration patterns and test on staging before production.
GDPR data residency
Supabase EU region projects store data in Frankfurt. We configure project regions, implement data deletion Edge Functions and validate data-residency assertions for GDPR Article 44–49 compliance.
Solutions
Solutions we build
Multi-tenant SaaS backends
Postgres + RLS for data isolation across tenants, PostgREST for instant typed APIs, Auth for user management.
FinTech and regulated apps
Audit-log tables, RLS-enforced data access and EU-region Postgres for PSD2 and GDPR-compliant financial backends.
Realtime collaboration features
Supabase Realtime subscriptions for live editing, presence and notifications without managing WebSocket infrastructure.
Mobile and web API backends
PostgREST auto-generates REST APIs from Postgres schema — paired with Edge Functions for business logic that cannot live in SQL.
File storage and media pipelines
Supabase Storage with RLS-protected buckets for user-uploaded assets, profile images and document storage.
Open-source and self-hosted deployments
Self-hosted Supabase on your own cloud account for full data control — we configure Docker Compose or Kubernetes deployments.
Stack
Technology stack
Supabase, PostgreSQL, PostgREST, Supabase Auth, Supabase Realtime, Supabase Storage, Deno Edge Functions, Row-Level Security, React Native, Next.js.
Compliance
Compliance & regulations
GDPR-aligned · EU data residency (Frankfurt) · SOC 2 (Supabase Cloud) · HIPAA-capable
EU
- GDPR — EU data residency (Frankfurt), RLS data isolation, data subject rights Edge Functions.
- ePrivacy — realtime data consent.
- PSD2 — transactional data audit trails.
- EAA — accessible client-side UIs.
US
- HIPAA — Supabase BAA for healthcare clients, encrypted columns.
- CCPA/CPRA — data subject rights Edge Functions.
- PCI DSS — Supabase not in scope; tokenised payment flows.
- SOC 2 — Supabase Cloud is SOC 2 Type II certified.
Cases
Selected Supabase case studies
Crypto · FinTech
EverCoin Bank
Unified crypto-ecosystem hub aggregating multiple tokens — live exchange data, search, charts, direct purchase entry point.
HealthTech · Nutrition
BasilDoc
Cross-platform diet and meal-planning app on Flutter — calorie engine, recipe library, weekly meal-plan, grocery ordering.
Logistics · Last-mile · Mobile
xRouten
Android + iOS refactor and rebuild for a German last-mile logistics operator — multi-point route planning, real-time driver tracking and in-app invoicing live in the EU.
Why YuSMP
Why teams choose YuSMP for Supabase
Postgres expertise underneath
Supabase is Postgres. Our engineers write RLS policies, migration scripts and query optimisations at the database level — not just through the GUI.
RLS as a first-class concern
We treat Row-Level Security policies as part of the data model, not an afterthought. Every multi-tenant Supabase project ships with a tested RLS policy suite.
Self-hosted or managed — your choice
We deliver on Supabase Cloud for speed or self-hosted on your infrastructure for data control. Same architecture, same RLS, same Edge Functions.
FAQ
Supabase FAQ
When is Supabase a better choice than Firebase?
Supabase is better when your data model is relational, you need SQL joins and complex queries, or you require an open-source / self-hostable stack. Firebase is better when you need sub-millisecond document reads, deep iOS/Android SDK integration and Google's global edge network.
How do Row-Level Security policies work?
RLS policies are SQL expressions attached to Postgres tables. Every INSERT, SELECT, UPDATE and DELETE checks the policy before returning data — no application-layer code can bypass them. We write and test RLS policies as part of the data model design.
Can Supabase handle a high read volume?
Yes — PostgREST and Supabase's connection pooler handle thousands of concurrent requests. For very high read loads, we add a read replica or layer a CDN cache for public, non-personalised endpoints.
Do you offer self-hosted Supabase?
Yes. We deploy Supabase via Docker Compose or Kubernetes on your cloud account (AWS, GCP, Azure) for full data control. Self-hosted removes per-row pricing and keeps data within your infrastructure boundary.
How do you handle GDPR data subject rights in Supabase?
We implement data export and deletion Supabase Edge Functions that traverse all tables containing the user's data, respect FK constraints and return a confirmation receipt — standard in every EU client engagement.
How do Supabase Realtime subscriptions work?
Supabase Realtime proxies Postgres WAL changes over a WebSocket connection. Clients subscribe to table or row changes and receive events in real time. We filter channels to the minimum data required per user to reduce bandwidth.
Can Supabase be used with a React Native or Flutter app?
Yes. Supabase provides official SDKs for React Native (JavaScript), Flutter (Dart) and every major web framework. We use the SDK for Auth, Realtime and Storage, and PostgREST for typed API calls.
Build a Postgres-backed Supabase backend with senior engineers
Response within 1 business day. NDA on request.