About the Role

Appsierra is seeking a skilled Full Stack Web Developer to join their team in Uttar Pradesh. This role involves designing, developing, and maintaining robust full-stack web applications. You will be instrumental in architecting scalable APIs, optimizing microservices, and managing event-driven systems. A strong understanding of database management with PostgreSQL and MongoDB is crucial. You will ensure the reliability, performance, and security of applications hosted on AWS cloud infrastructure. Collaboration with Product, Design, and Data teams is key to delivering impactful user-friendly applications. Adherence to best engineering practices through CI/CD pipelines, automated testing, and code reviews is expected. You will also contribute to system design decisions and mentor junior developers.

Key Responsibilities

• Design, develop, and maintain full-stack web applications using React (frontend) and NestJS/TypeScript (backend).
• Architect and optimize APIs, microservices, and event-driven systems leveraging Kafka.
• Work with PostgreSQL and MongoDB to model, store, and query structured and unstructured data.
• Ensure system reliability, performance, and security across AWS cloud environments (EC2, S3, RDS, Lambda, etc.).
• Collaborate with Product, Design, and Data teams to deliver user-friendly, high-impact applications.
• Implement CI/CD pipelines, automated testing, and code reviews to ensure best engineering practices.
• Contribute to system design and architecture decisions for scalability and maintainability.
• Mentor junior developers, providing technical guidance and fostering a culture of excellence.
• Troubleshoot, optimize, and improve existing systems to meet evolving business needs.

Qualifications

Core Skills

• 6+ years of professional software development experience, with at least 3+ years in full stack roles.
• Strong expertise in TypeScript and JavaScript for both frontend and backend development.
• Proficient in NestJS (Node.js framework) for building scalable backend APIs.
• Advanced experience with React for building modern, responsive web interfaces.
• Hands-on with PostgreSQL (relational DB) and MongoDB (NoSQL).
• Experience with Kafka for real-time messaging, streaming, and event-driven architecture.
• Solid knowledge of AWS cloud services (EC2, RDS, S3, Lambda, IAM, etc.).

Nice-to-Have

• Familiarity with containerization and orchestration (Docker, Kubernetes, ECS/EKS).
• Experience with CI/CD pipelines (GitHub Actions, GitLab CI, or similar).
• Knowledge of system security best practices (JWT, OAuth2, RBAC).
• Exposure to financial systems, blockchain, or cryptocurrency technologies.

Our Technology Stack

• Frontend: React, TypeScript, TailwindCSS
• Backend: NestJS (Node.js, TypeScript), REST & GraphQL APIs
• Databases: PostgreSQL, MongoDB, Redis
• Messaging & Streaming: Kafka
• Cloud: AWS (EC2, RDS, S3, Lambda, CloudFront, IAM)
• CI/CD & DevOps: GitHub Actions, Docker, Kubernetes