FULLTIME
Full Stack Engineer

BLDX
Not specified · onsite · Posted 7d ago
Sourced from
Not disclosed2–4 yrsfulltimeNot specified
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Section · 01
About this role
What You'll Do
- Design and build scalable REST APIs and services using Node.js (Express/NestJS) and MongoDB
- Model and optimize MongoDB schemas, indexes, and aggregation pipelines
- Deploy and run services on AWS (EC2/ECS, Lambda, S3, RDS, SQS/SNS, CloudWatch)
- Build integrations, background jobs, and event-driven workflows
- Support the AI layer by exposing backend services and data to LLM-driven agents
- Write clean, tested, documented code and take part in code reviews
- Build React UI features when needed
Must-Have
- 2-4 years of professional experience in full-stack development with the MERN stack
- Strong Node.js and JavaScript/TypeScript, with a backend-first mindset
- Solid MongoDB experience (schema design, performance tuning)
- Hands-on AWS experience (deployment, S3, Lambda, IAM, monitoring)
- Experience with authentication/authorization (JWT, RBAC), API security, and rate limiting
- Working knowledge of React, Git, and CI/CD
- Good understanding of system design basics: caching, queues, scalability
Good to Have
- Docker, Terraform/CloudFormation
- Redis, WebSockets
- Exposure to LLM APIs, RAG, or agent frameworks
- Experience with SaaS or multi-tenant products
- Testing with Jest/Mocha/Supertest
What We Offer
- High ownership and direct work with the CTO and founders
- Real exposure to building AI-native products
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Section · 02
Skills
nestjsRbacExpress.jsAWS EC2JavascriptNode.JsMongoDBTypescriptReact.JsJwtGIT