Supabase Development · Derry
Supabase Development in Derry
Building on Supabase for Derry organisations, where the browser talks to the database directly. There is no server layer deciding what each user may see unless you write one, so row-level security is not a hardening step applied later — it is the entire access control model, and an application without it is simply open.
Why this comes up
The problem
The front end queries tables directly and no row-level policies restrict what any signed-in user can read.
What you get
What we deliver
- Row-level security enabled on every table from the start, not retrospectively
- Policies written per table and tested by attempting access that should fail
- Server-side logic placed in functions where the client should not decide
- Generated types used so the schema and the application stay in agreement
- Migrations managed in version control rather than changed through the dashboard
- Realtime subscriptions scoped, since these respect policies but still cost connections
Want this scoped for your business in Derry?
Thirty minutes, no charge, no sales script. You leave with a written summary of what supabase development would actually involve — whether or not you use us.
Working in Derry
Northern Ireland
The city is Derry to most of its population and Londonderry in official use, and which name you lead with is read as a statement here — we use Derry in customer-facing copy and note both where a document has to be formal.
Cross-border trading systems for businesses working into Donegal, and manufacturing tooling for the north west.
Sectors we work with in Derry
- Manufacturing
- Healthcare
- Higher Education
- Digital
- Tourism
What we work with
Technologies and platforms
- Supabase
- PostgreSQL
- TypeScript
- React
Who we work with
Industries we serve
- SaaS businesses
- Startups
- Technology companies
- Education
- Health and fitness
Why us
Why Derry 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 Derry
Looking for the full picture? See our Supabase Development services, everything we do in Derry or browse everything we do.
Supabase Development in Derry — common questions
- Why is security the architecture here?
- Because there is nothing between the client and the database. In a conventional application the server decides what to return; here the query comes from the browser, so the only thing preventing one user reading another's data is the policy on the table.
- How should policies be tested?
- By asserting that forbidden reads fail. A policy tested only by the developer signing in as themselves proves nothing, whereas a test that signs in as one user and confirms they cannot see another's rows is the check that actually matters.
- When do we need server-side functions?
- When the client should not be trusted with the logic. Anything involving a secret, a third-party call or a rule the user could otherwise bypass belongs in a database function or an edge function rather than in code running on their machine.
- Should schema changes go through the dashboard?
- Not for anything you intend to keep. Changes made through the interface exist in one environment with no history, so migrations held in version control are what allow the schema to move between environments and be reviewed like the rest of the code.
- Do you work with businesses across County Londonderry?
- Yes. We are based in Leicester, United Kingdom and work with clients throughout Northern Ireland, including Derry and the surrounding County Londonderry area. Most collaboration happens remotely, and we travel for kick-offs and key milestones.
- What kind of Derry businesses do you usually work with?
- Cross-border trading systems for businesses working into Donegal, and manufacturing tooling for the north west. Beyond that we work across Manufacturing, Healthcare, Higher Education, Digital and Tourism.
- Do you cover the areas around Derry?
- Yes — we work throughout Northern Ireland, including Belfast, Lisburn. Derry is an urban area of roughly 85,000+, and we take on work across the wider County Londonderry region rather than the city boundary alone.
Talk to us about Supabase Development in Derry
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