Senior MERN Developer (React.js + Node.js)

Embedded Shishya; Gopalganj; On-site; INR 11,461,000 - 17,192,000; Full time

Benefits offered by this job

On-time payments

Flexible time-off

Long-term remote roles

Competitive compensation

Job summary

Embedded Shishya is seeking a Senior MERN Stack Developer with heavy React.js and Node.js expertise to architect, scale, and maintain high-throughput web applications. You will own both front-end interfaces and back-end microservices, delivering secure, responsive products.

You should excel in modern JavaScript/TypeScript, REST/GraphQL, AWS, Docker, and CI/CD practices, and be comfortable with cloud deployments and performance optimization in a fast-growing environment.

Qualifications

• 5+ years of professional software engineering in MERN stack
• Expertise in React.js, Node.js, and scalable REST/GraphQL services
• Strong TS/ES6+ and asynchronous programming
• Experience with cloud deployments and CI/CD

Responsibilities

• Design, develop, and deploy scalable full-stack features
• Build secure microservices and integrate third-party APIs
• Profile and optimize performance, databases, and caching
• Lead architecture discussions and enforce tests
• Collaborate with DevOps to containerize and deploy

Skills

MERN stack (MongoDB, Express.js, React

JavaScript/TypeScript

React internals & state management

RESTful APIs / GraphQL / WebSockets

Authentication (JWT, OAuth2)

Docker & CI/CD (GitHub Actions)

AWS cloud services

Time zone CET alignment

Tools

Docker

GitHub Actions

AWS

Postman/REST testing

Job description

Headquarters: Sweden

URL: http://career.proxify.io

The Role:

We are looking for a Senior MERN Stack Developer with heavy specialization in React.js and Node.js on behalf of one of our high-growth clients to architect, scale, and maintain high-throughput web applications. In this role, you will take operational ownership of both front-end user interfaces and back-end microservices, delivering seamless, secure, and responsive digital products. You will bridge user-facing features with complex database architectures and cloud infrastructure. You are a perfect candidate if you are growth-oriented, you love what you do, and you enjoy working on new ideas to develop exciting products

What we are looking for:

• 5+ years of professional software engineering experience designing, building, and deploying end-to-end applications using MongoDB, Express.js, React.js, and Node.js.
• Deep proficiency in modern JavaScript (ES6+), TypeScript, asynchronous programming, event loops, and memory management across client and server environments.
• Deep mastery of React internals, custom hooks, component design patterns, state management (Redux Toolkit, Zustand, or React Query), SSR/SSG frameworks (Next.js is a strong plus), and performance optimization (virtualization, code splitting, Web Vitals).
• Proven experience architecting scalable RESTful APIs, WebSockets, and/or GraphQL services. Proficiency with middleware design, authentication protocols (JWT, OAuth2, Passport.js), and event-driven architectures.
• Advanced knowledge of MongoDB schema design, aggregation pipelines, index strategy, performance tuning, and ORMs/ODMs like Mongoose or Prisma.
• Strong commitment to test-driven development using frameworks like Jest, React Testing Library, and Cypress, alongside hands-on experience with Docker, CI/CD pipelines (GitHub Actions), and AWS cloud services.
• Time zone: CET (+/- 3 hours). We are unable to consider applications from candidates in other time zones.

Nice-to-have:

• Experience with Next.js or Remix for production-grade full-stack React frameworks.
• Familiarity with relational databases (PostgreSQL, MySQL) alongside MongoDB.
• Experience with vector databases or AI model integration into Node.js backend services.
• Exposure to micro-frontends or monorepo setups (Turborepo, Nx).

Responsibilities:

• Design, develop, and deploy scalable full-stack features from initial database schema creation down to polished, pixel-perfect React interfaces.
• Build secure, high-concurrency microservices and web services, managing integrations with third-party APIs, webhooks, and real-time communication channels.
• Audit, profile, and optimize application throughput—reducing bundle sizes and rendering overhead on the front end while optimizing database queries and caching layers (Redis) on the back end.
• Lead architectural discussions, write modular and well-documented TypeScript code, enforce strict testing protocols, and conduct thorough peer code reviews.
• Collaborate with cloud and DevOps engineers to containerize applications, set up automated deployment pipelines, and maintain system monitoring tools.

What we offer:

• Get paid, not played No more unreliable clients. Enjoy on-time monthly payments with flexible withdrawal options.
• Predictable project hours Enjoy a harmonious work-life balance with consistent 8-hour working days with clients.
• Flex days, so you can recharge Enjoy up to 24 flex days off per year without losing pay, for full-time positions found through Proxify.
• Career-accelerating positions at cutting-edge companies Discover exclusive long‑term remote positions at the world's most exciting companies.
• Hand-picked opportunities, just for you Skip the typical recruitment roadblocks and biases with personally matched positions.
• One seamless process, multiple opportunities A one-time contracting process for endless opportunities, with no extra assessments.
• Compensation Enjoy the same pay, every month with positions landed through Proxify.