Nitin Kumar

Software Engineer

Delhi, India4 yrs 2 mos experience

Key Highlights

Expert in full stack development with diverse tech stack.
Proven track record in optimizing backend performance.
Experience in building scalable applications and microservices.

Stackforce AI infers this person is a Full Stack Developer specializing in SaaS and Fintech applications.

Contact

nitin.kumar@batterysmart.in LinkedIn

Skills

Core Skills

Node.jsReact.jsFastapiJava

Other Skills

AWSAngular.jsAngularJSApache KafkaDjangoDjango REST FrameworkExpress.jsGoJenkinsKubernetesMongoDBPostgreSQLPython (Programming Language)RedisRuby on Rails

About

Experienced Full Stack Developer with expertise in designing and building scalable, high-performance applications.Skilled in Java, Spring Boot, Django, Node.js, and Express.js for backend and ReactJs for Frontend and PostgreSQL and MongoDB for databases with a strong focus on microservices architecture, database optimization.

Experience

Battery smart

Software Dev

Apr 2025 – Present · 11 mos · Gurugram, Haryana, India · Hybrid

Tech Stack : NodeJs, ExpressJs, Ruby on Rails , Go, FastAPI, React.js, Kubernetes
Scaling driver onboarding processes — both operationally and technically — from 2–3 to 260 onboardings/day by event-driven workflows and optimizing database queries, and enhancing backend services for high concurrency.
Improved backend performance by optimizing APIs, cutting response times from repeated frontend/Android timeouts to less 5 seconds through query tuning and code refactoring.
Developed a FastAPI backend for the Dockerized sbd-max project and .implemented a Jenkins-based CI/CD pipeline, including automated dev deployments and a .production rollout stage for seamless, reliable releases.
Engineered an end-to-end payment collection module for BAAS drivers, integrating cash handling workflows and online payment channels (UPI, Razorpay payment links) with secure APIs and automated reconciliation processes.
Engineered backend for a super app enabling self-onboarding of 2-wheeler drivers, integrating identity/document verification, background check APIs, and automated workflows to support high scalability and minimal manual intervention

Node.jsExpress.jsRuby on RailsGoFastAPIReact.js+2

Peoplestrong

Software Engineer

Jul 2022 – Apr 2025 · 2 yrs 9 mos · Gurugram, Haryana, India · Hybrid

Worked in Payreview team as a Fullstack Developer
Tech Stack : Java, Springboot, NodeJs, ExpressJs, Django, React.js, Angular.js
Architected and developed a scalable Salary Structure Engine for PayReview using SpringBoot and Django which integrating seamlessly with various organizational modules using its Salary Structure Generation feature, Postgres for efficient data management which increased system efficiency by 50%
Developed high-performance RESTful APIs with Node.js, Express.js, and MongoDB and integrating them into multiple products for seamless synchronization.
Developed and enhanced Employee Appraisal and Budgeting pages in React.js. Rewrote APIs in Node.js and Django, integrating external APIs for better UI responsiveness and user experience.
Optimized PostgreSQL and MongoDB queries, improving system performance by 30%, and implemented Redis caching for faster data access futher reducing load on database.
Reduced load time by 60-70% on PayReview pages and improved performance of various background process and scaled the product to handle increased user load by leveraging distributed systems.

JavaSpring BootNode.jsExpress.jsDjangoReact.js+5

Rivigo

Software Engineer

Jan 2022 – Jul 2022 · 6 mos · Gurugram, Haryana, India

Worked in frontend team as a React Developer
Tech Stack : Java, Springboot, NodeJs, ExpressJs, Django, React.js, Angular.js
Build Order management , pilot tracking enabling fleet owners to track order and their pilot.
Migrated pickup tracking page from ops service to panel service enabling clients to track their pickup.
Build Bid Rate page enabling clients to bid for created load .
UI revamp from angular to react.
Build modal to mark and unmark vehicle , plan / unplan vehicle and show trip status along with their activity log for rivigo operation teams.
Improving many more internal tools and fixing bugs.