Senior Full-Stack Developer (MERN Stack)
SquarePeg
Software Engineering
India
Posted on Sep 13, 2025
Position Overview
We are seeking a highly skilled Senior Full-Stack Developer with strong expertise in the MERN stack (MongoDB, Express.js, React.js, Node.js) and experience with AWS services. In this role, you will help architect, build, and scale mission-critical healthcare web applications. You will collaborate closely with cross-functional teams to deliver secure, performant, and reliable solutions that improve patient care and streamline radiology workflows.
Candidates with prior healthcare IT or HIPAA-compliant application experience will be strongly preferred.
Key Responsibilities
We are seeking a highly skilled Senior Full-Stack Developer with strong expertise in the MERN stack (MongoDB, Express.js, React.js, Node.js) and experience with AWS services. In this role, you will help architect, build, and scale mission-critical healthcare web applications. You will collaborate closely with cross-functional teams to deliver secure, performant, and reliable solutions that improve patient care and streamline radiology workflows.
Candidates with prior healthcare IT or HIPAA-compliant application experience will be strongly preferred.
Key Responsibilities
- Develop and maintain full-stack web applications using MongoDB, Express.js, React.js, and Node.js.
- Build responsive, high-performance front-end applications with React.js and Next.js, translating complex UI/UX designs into clean, reusable code.
- Design and manage RESTful APIs and WebSockets for real-time features.
- Optimize application performance, security, and scalability, especially for high-load healthcare environments.
- Integrate and manage AWS services (Lambda, Amplify, S3, DynamoDB, etc.) to support backend infrastructure.
- Implement secure authentication and authorization using JWT, OAuth, or similar frameworks.
- Collaborate with designers, product managers, and QA engineers to deliver high-quality product iterations.
- Mentor junior developers and contribute to team best practices.
- Troubleshoot, debug, and resolve production issues efficiently.
- 5–10 years of professional experience in full-stack web development.
- Strong proficiency in JavaScript/TypeScript with deep expertise in React.js, Next.js, Node.js, and Express.js.
- Hands-on experience with MongoDB and scalable database design.
- Solid understanding of AWS services (Amplify, Lambda, S3, DynamoDB).
- Experience with WebSockets for real-time features.
- Strong foundation in HTML, CSS, responsive design, and accessibility (WCAG).
- Proficiency with Git and collaborative development workflows.
- Proven experience implementing secure authentication/authorization flows.
- Excellent debugging, performance tuning, and problem-solving skills.
- Ability to work independently and thrive in a distributed, fast-paced team.
- Background in healthcare IT or experience with HIPAA-compliant applications.
- Knowledge of microservices architecture, Docker, and Kubernetes.
- Familiarity with CI/CD pipelines, automated testing, and release management.
- Strong awareness of inclusive design and accessibility standards.
- Remote-first, collaborative work culture.
- Opportunity to build cutting-edge healthcare SaaS applications with real impact.
- Structured onboarding and continuous learning opportunities.
- Growth paths into technical leadership or solution architecture roles.
- Competitive compensation and benefits.