Mern Stack Developer

We are looking for a Senior Full Stack Engineer with strong experience in React, TypeScript, Node.js, NestJS, GraphQL, and PostgreSQL to build and deliver scalable, production-grade applications.

The ideal candidate should have strong end-to-end ownership across architecture, development, testing, deployment, monitoring, and performance optimization. Experience integrating AI/LLM APIs such as OpenAI or Google Gemini is highly desirable.

Role & Responsibilities

• Own the complete feature lifecycle including architecture, development, code reviews, testing, deployment, and post-production monitoring.
• Develop responsive and scalable frontend applications using React.js and TypeScript.
• Build modular backend services using Node.js and NestJS.
• Design and implement GraphQL schemas, resolvers, and APIs using Apollo.
• Work with API Gateway platforms such as Apigee or equivalent technologies.
• Design and optimize PostgreSQL databases, schemas, queries, and data access layers using TypeORM or Prisma.
• Implement Redis for caching and Kafka for event-driven and asynchronous workflows.
• Integrate OpenAI, Google Gemini, or other LLM APIs into production applications.
• Handle AI-related production challenges including timeouts, rate limits, fallback mechanisms, token usage, and cost optimization.
• Work with Neo4j or graph-based data for relationship-driven applications and insights.
• Collaborate with data engineering teams on Snowflake, dbt, or Airflow pipelines.
• Implement monitoring and product analytics using tools such as Datadog and PostHog.
• Support A/B testing, feature flags, and experimentation platforms such as Optimizely.
• Identify and resolve performance bottlenecks across frontend and backend systems, including GraphQL N+1 queries, database performance, frontend rendering, and API response times.
• Participate in architecture discussions, Architecture Decision Records (ADRs), code reviews, and post-incident reviews.
• Work closely with Product, Design, Security, DevOps, and QA teams to deliver secure, scalable, and reliable solutions.

Required Skills

• 57 years of professional software development experience.
• Strong hands-on experience with React.js and TypeScript.
• Strong backend development experience with Node.js and NestJS.
• Hands-on experience with GraphQL and Apollo Client/Server.
• Experience with PostgreSQL, including database design and query optimization.
• Experience with TypeORM or Prisma.
• Good understanding of Redis and Kafka or equivalent caching and messaging technologies.
• Experience with REST APIs and API Gateway patterns such as Apigee.
• Experience with Auth0 or equivalent identity/authentication platforms.
• Strong understanding of microservices and event-driven architecture.
• Experience developing and deploying production-grade applications.
• Strong problem-solving and debugging skills.

Good to Have

• Experience with OpenAI, Google Gemini, LLMs, or Generative AI.
• Knowledge of prompt engineering, rate limiting, fallback handling, and AI cost optimization.
• Experience with Neo4j or other graph databases.
• Experience with Snowflake, dbt, or Airflow.
• Experience with Optimizely or similar experimentation/feature-management platforms.
• Salesforce integration experience.
• Experience with AWS services such as ECS, RDS, Lambda, S3, and CloudWatch.
• Experience with Docker, Kubernetes, or Terraform.
• Experience with Jest, Vitest, or Playwright for unit, integration, and end-to-end testing.
• Strong architectural thinking and ability to work independently in a high-ownership environment.

Education

Bachelors degree in Computer Science, Engineering, or a related field, or equivalent practical experience.