Senior MERN & React Native Full Stack Developer (Lead Engineer)

BoostGradkolkata, west bengal, in

1 day ago

Job description

About the role

We’re looking for a highly skilled Senior MERN & React Native Full Stack Developer who has end-to-end product lifecycle experience , has worked in fast-paced agile environments, and is comfortable owning features from planning to deployment. You will lead junior developers, perform code reviews, manage DevOps workflows , and take accountability for delivering high-quality, scalable features.

This is a full-time contract remote position that will require periodic onsite visits in Mumbai (for product alignment & team syncs). We are looking for someone who wants to associate long-term and play a key role in taking the product to the next level .

This role is ideal for someone who wants to contribute hands-on while also mentoring a team and driving technical decisions.

Key Responsibilities

Full Stack Development

Lead development across MongoDB, Express.js, React.js, Node.js (MERN), and React Native
Architect, build & optimize scalable systems and microservices
Participate in end-to-end product lifecycle — planning, development, testing, deployment, maintenance
Build reusable front-end and backend components with clean architecture and secure coding practices

Leadership & Team Collaboration

Lead & mentor a team of junior developers

Conduct thorough code reviews , enforce best practices & ensure adherence to standards

Work closely with product, design & leadership teams for feature planning & releases

Take accountability for deliverables, timelines & quality

React Native & App Deployment

Build, maintain & optimize React Native applications

Familiarity with iOS & Android app publishing (App Store & Google Play)

Experience with OTA updates, build pipelines, code push, and bundle optimization

DevOps & System Administration

Experience with AWS services, CI / CD, and pipeline automation

Deploy & manage apps on AWS Linux servers

Hands-on with Nginx, Certbot SSL, domain routing & environment configuration

Monitor application performance, uptime & logging (CloudWatch / PM2 etc.)

Version Upgrade / Migration Experience

Participated in and successfully delivered :

MongoDB upgrades

Node.js version upgrades

React & React Native upgrades

Library migration & dependency management

API versioning & backward compatibility

Required Skills & Experience

3+ years of hands-on experience in MERN stack

Strong experience in React Native mobile development

Team leadership / mentoring experience

Strong understanding of REST APIs, Payment Gateways, Third Party libraries

Git workflow + PR pipeline management

Strong debugging, profiling and performance optimization skills

Excellent written & verbal communication skills

Ability to handle multiple responsibilities independently and take ownership

Product-thinking mindset & experience working in a startup / agile environment

Nice to Have

Experience with Docker / containerization

Familiarity with Golang

Experience with AWS Lambda, S3, EC2, SES

Exposure to CI / CD tools

Experience with third party integrations (payment gateways, SMS / email APIs, social auth, etc.)

Understanding of analytics tools (Firebase etc.)

Experience working on scalable multi-role platforms / marketplaces / SaaS

Knowledge of Postman / Swagger API documentation

What we're looking for

We want someone who :

Owns what they build

Makes independent decisions

Can handle pressure & iterate fast

Cares about long-term maintainability

Can work hands-on while managing others

Has the maturity to lead, plan, and deliver

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Mern Stack Developer • kolkata, west bengal, in

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