Senior/Staff Backend Developer

Há 6 dias

Itapema, Brasil Expiwell Tempo inteiro

Senior/Staff Backend Developer (Nest.JS - AWS - Mongo - Apollo GraphQL)Required skills: Nest.JS, MongoDB, AWS, Apollo GraphQL.Position Overview:We're seeking a very experienced Senior/Staff Backend developer/ Architect to modernize and extend our ExpiWell research platform API using NestJS and Apollo GraphQL, AWS and MongoDB Atlas architecture.The main server will be serving a native IOS and and Android Application as well a modern unified React Native app.Key Responsibilities- Migrate legacy API endpoints from Express to NestJS v11 with full TypeScript typing.- Build RESTful APIs, WebSocket gateways, and background job systems.-Improve out AWS infrastructure to a more modern VPS.AWS certification a huge plus.- Redesign our MongoDB architecture to better align with global customers.- Apollo GraphQL certificate training in Parts 1 to 4.(must complete)- Implement authentication, payment processing, and real-time messaging features.- Write comprehensive unit tests (Jest) and maintain >80% code coverage- Design and document APIs using Swagger/OpenAPI specifications.- Implement AWS integrations (S3, SES) and third-party services (SendGrid, Stripe, Twilio)Required SkillsTechnical Stack- Expert-level NestJS (v11+) with dependency injection, guards, interceptors, pipes- Advanced TypeScript (v5.7+) with generics, decorators, and type safety patterns-Apollo GraphQL basic 1-4 certificate training, link above.- MongoDB with Mongoose ODM and complex aggregations- Testing: Jest, unit testing, E2E testing, test coverage strategies- RESTful API design and versioning strategies- WebSocket/Socket.IO for real-time features- AWS Services: S3, SES, CloudWatch- Git workflow with conventional commits and PR reviewsNice to Have- React / Next.js experience- Redis for caching and distributed locking- Stripe payment integration- Twilio SMS/voice integration- Puppeteer/headless browser automation- Sentry/ Data Dog error monitoring- Docker containerization- Experience with research/survey platformsWhat Makes You Great for This Role- You understand modern backend architecture (microservices, event-driven, CQRS)- You write clean, maintainable code that follows SOLID principles- You're comfortable working with large codebases and legacy migration- You proactively write tests and documentation- You can debug complex issues across multiple services- You stay current with JavaScript/TypeScript ecosystem trendsProject ContextYou'll be working on a research platform that powers mobile experience sampling studies.The API handles:- Survey delivery and response collection- Real-time participant messaging- Payment/incentive distribution- Media upload and transcription- Geofencing and sensor triggers- Anonymous survey participationDevelopment Environment- Framework: NestJS v11 monorepo with shared libraries- Code Quality: ESLint v9, Prettier, TypeScript- Testing: Jest v30 with coverage reporting- AI Tools: Claude Code CLI for development assistance- Deployment: AWS infrastructureHow to ApplySubmit your application with:1. Resume highlighting NestJS, GraphQL, MongoDB and TypeScript projects2. GitHub and LinkedIn profileWhat We Offer:* Fully remote, flexible work setup* Supportive, collaborative global team* * Opportunities for long-term growth and increased responsibility

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