GraphQL Developer

Required Skills: GraphQL, TypeScript, Apollo Server

Notice Period: Immediate

Domain: Insurance

Minimum Exp: 5.5 years

GraphQL Developer

• Independently designs, implements, and maintains GraphQL backends using TypeScript, Apollo Server, Axios/Fetch (REST SDKs), MariaDB (SQL) with ObjectionJS + KnexJS, Redis, AWS, and modern authorization frameworks including AuthZ libraries or GraphQL Envelop.
• Applies strong engineering fundamentals, including Linux, Docker, OWASP, SOLID/DRY/KISS/YAGNI, and sound data structures & algorithms for correctness, safety, and efficiency.
• Authors strongly typed schemas using GraphQL SDL or code first frameworks (e.g., GiraphQL/Pothos, TypeGraphQL) and uses GraphQL Code Generator to produce type safe definitions for schemas, resolvers, queries, mutations, and subscriptions.
• Configures Apollo Server with TypeScript; develops type safe resolvers; implements REST and database data sources; manages context initialization (auth, tenancy, request scoping); and enforces query depth/complexity limits, rate limiting, and persisted queries.
• Demonstrates expert SQL capabilities in MariaDB, including schema design, indexing, migrations, query optimization, and resilient data access through ObjectionJS and KnexJS, ensuring idempotent operations and safe transactions.
• Optimizes performance by eliminating N+1 through DataLoader, implementing caching (in memory and Redis), optimizing pagination and batching, and profiling GraphQL resolver and SQL hot paths.
• Implements secure by design GraphQL services, including OAuth/OIDC, encryption in transit/at rest, secret management, input validation, output encoding, least privilege access, and resolver level authorization to mitigate CSRF/CORS and other abuse vectors.
• Defines and executes high quality GraphQL and REST API tests across all API testing types (contract, functional, integration, negative, security, performance) using Browser DevTools, Bruno, and Insomnia, and writes comprehensive unit, integration, and end to end tests.
• Produces maintainable, reusable, type safe code that is fast, idempotent, resilient, observable, and fault tolerant, incorporating retries, exponential backoff, graceful degradation, circuit breakers, and robust structured error surfaces.
• Diagnoses failures across the stack using logs, metrics, traces, database analysis, and network inspection; performs root cause analysis and provides actionable remediations with evidence based findings.
• Operates services locally via Docker and deploys to AWS using appropriate configuration, secrets management, monitoring, and observability tooling; tunes caching, database performance, and GraphQL query execution in production environments.
• Designs stable, versioned, backward compatible GraphQL contracts; maintains API documentation and operational runbooks; and ensures seamless integration between backend logic, database layers, and frontend clients.