Hire GraphQL Developers · Belfast
Hire GraphQL Developers in Belfast
GraphQL developers for Belfast teams, where the schema is a contract you will struggle to change. Clients depend on the shape you publish, and unlike a versioned endpoint there is no straightforward way to release a second version — so schema design decisions taken in the first month govern the API for years.
Why this comes up
The problem
The schema was designed around the database tables and every client now depends on that shape.
What you get
What we deliver
- Schema design judgement tested, since this is the durable part of the work
- Understanding of modelling around use cases rather than tables assessed
- Deprecation and evolution approach discussed, as the schema must change eventually
- Batching and loader patterns probed, because resolvers cause repeated queries
- Authorisation approach examined, given that it applies per field rather than per route
- Query cost and depth limiting discussed where the API is publicly reachable
Want this scoped for your business in Belfast?
Thirty minutes, no charge, no sales script. You leave with a written summary of what hire graphql developers would actually involve — whether or not you use us.
Working in Belfast
Northern Ireland
Belfast has a substantial fintech and cyber security sector, and businesses trading here deal with a distinct regulatory position post-Brexit that affects goods moving between Northern Ireland, Great Britain and the Republic.
Fintech and security-accredited systems, plus trading platforms that handle the specific customs position on goods.
Sectors we work with in Belfast
- Fintech
- Cyber Security
- Film & Media
- Manufacturing
- Higher Education
What we work with
Technologies and platforms
- GraphQL
- TypeScript
- Apollo
- PostgreSQL
Who we work with
Industries we serve
- SaaS businesses
- Retail
- Media companies
- Financial services
- Technology companies
Why us
Why Belfast 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 Belfast
Looking for the full picture? See our Hire GraphQL Developers services, everything we do in Belfast or browse everything we do.
Hire GraphQL Developers in Belfast — common questions
- Why is schema design the main skill?
- Because it is the part you cannot easily undo. Resolvers can be rewritten freely; the published schema is depended upon by every client, and a shape that mirrors your database rather than your domain becomes a constraint on both sides for years.
- How is a schema changed safely?
- Additively, with deprecation. Fields can be added and old ones marked deprecated while clients migrate, which works provided somebody tracks usage and eventually removes them — a discipline worth asking about, since many schemas accumulate deprecated fields indefinitely.
- What causes performance problems?
- Resolvers issuing a query each. A nested query resolving fifty items with a related record produces fifty round trips unless batching is used, and understanding that pattern is the difference between an API that scales and one that does not.
- Is authorisation harder here?
- Different rather than harder, and easy to get wrong. Permission applies at field level rather than per endpoint, so a developer used to route-based authorisation may leave fields reachable through paths nobody considered — worth testing directly.
- Do you work with businesses across County Antrim?
- Yes. We are based in Leicester, United Kingdom and work with clients throughout Northern Ireland, including Belfast and the surrounding County Antrim area. Most collaboration happens remotely, and we travel for kick-offs and key milestones.
- What kind of Belfast businesses do you usually work with?
- Fintech and security-accredited systems, plus trading platforms that handle the specific customs position on goods. Beyond that we work across Fintech, Cyber Security, Film & Media, Manufacturing and Higher Education.
- Do you cover the areas around Belfast?
- Yes — we work throughout Northern Ireland, including Lisburn, Bangor, Newry. Belfast is an urban area of roughly 345,000+, and we take on work across the wider County Antrim region rather than the city boundary alone.
Talk to us about Hire GraphQL Developers in Belfast
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