Hire GraphQL Developers

GraphQL is most valuable when multiple clients (web, mobile, third parties) need different subsets of the same underlying data, when clients need to aggregate data from multiple entities in a single request, or when your API surface is large and evolving frequently. REST is simpler and sufficient for straightforward CRUD applications with stable, predictable data requirements. Kultrix developers can evaluate your specific situation and recommend the right API style.

Standard placement is within 48 hours of contract signing. For projects requiring Apollo Federation expertise or code-first schema-builder experience, allow up to one week for matching from our bench.

The N+1 problem occurs when a GraphQL resolver for a list field executes a database query for each item independently. Our developers solve this universally with DataLoader — which batches all resolver calls within a single event loop tick into one query, then distributes results back to each resolver. This is non-negotiable for production GraphQL APIs with any relational data.

Apollo Server is our default GraphQL server for Node.js projects, chosen for its ecosystem maturity, plugin system, and federation support. For NestJS backends, we use the NestJS GraphQL module with either schema-first or code-first approaches. For Go backends, we use gqlgen. The choice follows the existing project stack rather than a blanket preference.

Authentication is handled in the GraphQL context factory — validating the Bearer token or session cookie and attaching the authenticated user to the context. Authorisation is enforced either in resolvers (simpler projects) or with a schema directive layer (larger APIs). For complex permission models, we use the graphql-shield library or a custom middleware approach to keep authorisation logic DRY.

Yes. Apollo Federation lets multiple GraphQL services compose into a single unified graph. Our developers define entity types with @key directives, implement reference resolvers, set up Apollo Router as the gateway, and design service boundaries that minimise cross-service entity lookups. Federation is a significant architecture choice — we help you evaluate whether the complexity is justified for your scale.

We use GraphQL Code Generator to generate TypeScript types for all schema types, resolver signatures, and Apollo Client query hooks. This eliminates the category of bugs where the frontend assumes a field exists that the schema does not provide. Types are regenerated on every schema change and checked in CI to catch drift between schema and generated types.

Yes. GraphQL subscriptions enable real-time data push from the server to clients. We implement subscriptions using the graphql-ws protocol with Apollo Server, configure Redis Pub/Sub for horizontal scaling across multiple server instances, and handle subscription lifecycle (connect, subscribe, unsubscribe, reconnect) correctly on the client.

Public GraphQL APIs are vulnerable to deeply nested queries designed to exhaust server resources. We configure query depth limits, query complexity scoring with a maximum budget, field-level rate limiting, and introspection disabling in production. For high-traffic APIs, we add persisted queries (only whitelisted query documents are executed), eliminating the attack surface entirely.

Yes. We migrate REST APIs to GraphQL incrementally — wrapping existing REST endpoints as GraphQL resolvers first, then pushing the GraphQL layer closer to the data source over time. This approach delivers GraphQL's query flexibility to the frontend immediately while the backend migration proceeds without a big-bang rewrite. We have performed this migration across Node.js, Django, and Rails backends.

Schema-first means writing the SDL (.graphql files) as the source of truth, then implementing resolvers that must match it manually. Code-first means defining the schema in TypeScript (with Pothos, TypeGraphQL, or NestJS GraphQL) and generating the SDL from code. Code-first eliminates type-mismatch bugs between the schema and resolvers at compile time. We prefer code-first for new TypeScript projects.

We offer monthly retainer and time-and-materials models. Retainer clients get a fixed monthly developer allocation with guaranteed availability. T&M clients are billed weekly against tracked hours with full transparency. Both models include weekly progress reports, transparent timesheets, and a dedicated account manager. The minimum engagement is one month.