Senior / Staff Backend Software Engineer
ExpiWellJamnagar, IN4 hours ago
Job descriptionDesign and document APIs using Swagger / OpenAPI specifications. Review and validate AI-generated code for quality, security, and best practices Implement AWS integrations (S3, SES) and third-party services (SendGrid, Stripe, Twilio) 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. Free training provided by Apollo Odyssey. 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 reviews Experience using AI coding assistants (Claude code VSCode CLI) Ability to write effective prompts for code generation Strong code review skills to validate AI-generated code Understanding of when to trust AI vs. manual implementation Familiarity with AI-assisted testing and documentation React / Next.js experience Redis for caching and distributed locking Stripe payment integration Twilio SMS / voice integration Puppeteer / headless browser automation Sentry error monitoring Docker containerization Experience with research / survey platforms You can rapidly prototype features using AI assistance while maintaining code quality 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 trends Survey delivery and response collection Real-time participant messaging Payment / incentive distribution Media upload and transcription Geofencing and sensor triggers Anonymous survey participation Framework : NestJS v11 monorepo with shared libraries Package Manager : pnpm Code Quality : ESLint v9, Prettier, TypeScript Testing : Jest v30 with coverage reporting AI Tools : Claude Code CLI for development assistance Deployment : AWS infrastructure Fully remote, flexible work setup Supportive, collaborative global team Opportunities for long-term growth and increased responsibility
Senior Backend Developer (Nest.JS - AWS - Mongo - Apollo GraphQL)
Required skills : Nest.JS, MongoDB, AWS, Apollo GraphQL.
Company Description
At ExpiWell, we are transforming how organizations gather real-time, in-the-moment insights about human experiences. Our Experience Sampling Methodology (ESM) platform and mobile apps replace outdated survey methods, allowing organizations to capture dynamic and contextual data. Trusted by leaders in HR, Product & CX, Healthcare, and Academia, ExpiWell enables the collection of engagement, emotion, and behavior information through geofencing-triggered surveys and multimedia data capture. We aim to enhance research and promote a greater understanding of the human condition.
Position Overview :
We're seeking an experienced Senior Backend developer 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 that is currently in development.
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
Required Skills
Technical Stack
AI-Assisted Development
Nice to Have
What Makes You Great for This Role
Project Context
You'll be working on a research platform that powers mobile experience sampling studies. The API handles :
Development Environment
How to Apply
Submit your application with :
1. Resume highlighting NestJS and TypeScript projects
2. GitHub and profile
3. Brief description of your experience with AI coding tools.
What We Offer :
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Senior Software Engineer Backend • Jamnagar, IN
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