MERN Stack Developer (Mid-Senior)

Job Description

Title: MERN Stack Developer (Mid-Senior)

Company Name: Fleek Bangladesh

Vacancy: --

Age: Na

Job Location: Dhaka (DOHS Baridhara)

Salary: Negotiable

Experience:

• 3 to 7 years

• Bachelor of Science (BSc) in Computer Science & Engineering
• Bachelor of Science (BSc) in Mathematics
• Bachelor of Science (BSc) in Computer Science

• Bachelor’s degree in Computer Science, Software Engineering, or equivalent practical experience.

• 3 to 7 years

• Experience: 3–5 years in professional web application development, including at least 1+ years in enterprise-grade MERN projects.
• Strong problem-solving skills with a focus on clean, maintainable, and scalable code. Familiarity with Agile/Scrum methodologies.
• Ability to work under pressure and meet tight deadlines without compromising quality.
• Excellent communication skills in English (written and verbal).Capability to lead a small team and coordinate tasks effectively.

Required Skills

• Frontend: React.js (Hooks, Context API), Redux Toolkit/MobX, Tailwind CSS/SASS, Formik + Yup, Next.js.
• Backend: Node.js, Express.js, REST, GraphQL (Apollo), authentication systems, Helmet.js, CSRF protection, rate limiting.
• Databases: MongoDB (aggregation, indexing), MySQL/PostgreSQL, Redis. Testing & Tools: Jest, React Testing Library, Git, Docker, Kubernetes basics, CI/CD pipelines, monitoring tools (New Relic, Sentry).
• Additional Tools: WebSockets/Socket.io, PDFKit, Excel/CSV processing, payment gateway integration.

Bonus Skills:

• Laravel APIs, Blade templating, Eloquent ORM, legacy system maintenance, migration from Laravel to MERN.
• Bonus Skills (Nice to Have)Experience with Next.js for server-side rendering Familiarity with PHP Laravel (Priority Plus)Experience with deploying mobile apps on Google Play Store and Apple App Store Experience with integrating Push Notifications, Deep Linking, and other mobile-specific features

Job Context

Fleek Bangladesh is a fast-growing IT company delivering high-quality enterprise solutions to clients in the USA, Europe, and beyond. Our projects range from high-traffic service platforms, e-commerce platforms to multi-tenant SaaS products and complex ERP systems. We’re looking for a Mid-Senior MERN Stack Developer who can take ownership of development tasks, contribute to architectural decisions, and mentor junior developers while ensuring international development standards.

This role involves working on full-stack development—from building optimized REST/GraphQL APIs to delivering dynamic, responsive front-end UIs. Experience with PHP/Laravel for legacy integration and migration projects will be an added advantage.

Job Responsibilities

Core Development

• Design, develop, and maintain enterprise-grade applications using the MERN stack (MongoDB, Express.js, React.js, Node.js).
• Create and optimize RESTful APIs and GraphQL endpoints following JSON:API and Apollo best practices.
• Build secure authentication and authorization systems (JWT, OAuth 2.0, session management).
• Implement advanced database queries, aggregation pipelines, and indexing in MongoDB; manage relational data in MySQL/PostgreSQL.
• Integrate caching layers using Redis for performance optimization.
• Develop SSR/SSG applications with Next.js for high SEO performance.
• Build real-time features using WebSockets/Socket.io.

Project-Specific Implementations

• Develop high-traffic, multi-vendor e-commerce platforms with integrated payment gateways (Stripe, PayPal, etc.).
• Implement ERP modules (CRM, inventory, accounting) with scalable architectures.
• Integrate third-party APIs for shipping, SMS, and email notifications.
• Process and generate reports in PDF (PDFKit, React-PDF) and Excel/CSV formats.

Legacy System Integration

• Maintain and enhance existing PHP/Laravel-based systems.
• Migrate features and data from PHP/Laravel applications to the MERN stack.
• Collaborate with backend teams for API harmonization.

Quality Assurance & DevOps

• Write unit and integration tests using Jest and React Testing Library.
• Utilize Docker/Kubernetes for containerized development and deployment.
• Implement CI/CD pipelines using GitHub Actions or Jenkins.
• Monitor application health with tools like New Relic or Sentry.

Team Leadership & Collaboration

• Guide junior developers with code reviews, technical feedback, and mentoring.
• Collaborate with UI/UX designers, QA teams, and business analysts.
• Participate in sprint planning, backlog grooming, and project retrospectives.
• Communicate effectively with international clients for requirement clarification and updates.