Full Stack Developer – MERN

Bynaric Systems Pvt Ltd.; Mumbai; On-site; INR 900,000 - 1,300,000; Full time

Job summary

Bynaric Systems Pvt Ltd. is seeking an experienced Full Stack Developer with hands-on expertise in React.js, Next.js, Node.js, Express.js, and PostgreSQL.

You will develop and maintain web applications across frontend, backend, database, APIs, and third-party integrations, while engaging with clients to clarify requirements and deliver features end-to-end. The role requires strong communication, requirement gathering, problem-solving, and client-handling abilities, with ownership of modules from

Qualifications

• Bachelor's degree in CS/IT/Engineering or related field.
• 2–4 years of relevant Full Stack Development experience.
• Experience working on client-facing projects preferred.
• Strong verbal and written communication skills.

Responsibilities

• Develop and maintain web applications using React.js/Next.js, Node.js, and Express.js.
• Build responsive, reusable frontend components and scalable RESTful APIs.
• Design, develop, and manage PostgreSQL databases and integrations with third-party APIs.

Skills

React

Next.js

Node.js

Express.js

PostgreSQL

Communication

Requirement gathering

Client handling

Education

Bachelor's degree in Computer Science/IT/Engineering

Job description

About the Role

We are looking for an experienced Full Stack Developer with strong hands-on experience in React.js / Next.js, Node.js, Express.js, and PostgreSQL to work on a client project. The candidate will be responsible for developing and maintaining web applications across the frontend, backend, database, APIs, and third-party integrations. The role also requires direct interaction with the client to understand requirements, clarify business needs, suggest technical solutions, and take ownership of features from requirement gathering through delivery. The ideal candidate should have strong technical skills along with good communication, requirement-gathering, problem-solving, and client-handling abilities.

Key Responsibilities

• Develop and maintain web applications using React.js, Next.js, Node.js, and Express.js.
• Build responsive, reusable, and user-friendly frontend components.
• Develop scalable and secure RESTful APIs using Node.js and Express.js.
• Design, develop, and manage PostgreSQL databases.
• Integrate third-party APIs and external services.
• Implement and maintain payment gateway integrations.
• Handle payment workflows, transaction status, callbacks/webhooks, and related business logic.
• Understand client requirements and convert them into effective technical solutions.
• Participate in client discussions and requirement-gathering sessions.
• Ask relevant questions to clarify incomplete or ambiguous requirements before development.
• Explain technical concepts and solutions clearly to non-technical stakeholders.
• Work across frontend, backend, database, and integration layers to deliver complete features.
• Debug and resolve application, API, database, and integration-related issues.
• Optimize application performance and ensure secure, maintainable code.
• Work closely with Project Managers, QA, UI/UX designers, and other developers.
• Take ownership of assigned modules/features and ensure timely delivery.
• Support testing, deployment, and production issues when required.

Qualifications

• Bachelor's degree in Computer Science, IT, Engineering, or a related field.
• 2–4 years of relevant Full Stack Development experience.
• Experience working on client-facing projects will be preferred.
• Strong verbal and written communication skills.
• Ability to work independently and collaboratively.