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Rahul Raj

Sr. Full-Stack Developer & Internship Manager

React Native (iOS & Android) · MERN · Python

Sr. full-stack developer and internship manager with 4+ years of experience building scalable backend systems, web applications, and cross-platform mobile apps. Currently leading React Native (iOS & Android) development and mentoring interns, having grown from a MERN / full-stack developer role. Strong in the MERN stack, React Native, and Python (Django, Flask, FastAPI) — focused on performance, reliability, and clean architecture.

Résumé View Work

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Rahul Raj — Sr. Full-Stack Developer & Internship Manager

5+: Years experience
19+: Shipped projects
3: Companies

Summary

PythonDjango · Flask · FastAPI

MERNMongoDB · Express · React · Node.js

MobileReact Native · iOS & Android

Experience

Oct 2025 – Present

1 yr · ongoing

Hybrid

Sr. Full-Stack Developer & Internship Manager

Larklabs.ai

Leading cross-platform mobile development with React Native, shipping production apps for both iOS and Android.
Managing and mentoring the internship program — onboarding, guiding, and reviewing the work of intern developers.
Architecting scalable REST APIs and microservices with Python and the MERN stack for real-time analytics dashboards.
Spearheading Python-based backends for AI-driven features, improving response times by ~25%.
Owning CI/CD pipelines and Kafka-based event-driven communication across core backend services.
Providing engineering work support for enterprise clients including Walmart, Apple, Oracle, and Samsung Knox.
Achieving 100% React test coverage using Jest and React Testing Library.
Progressed here from a MERN / full-stack developer role into senior mobile development and internship management.

Aug 2024 – Sep 2025

1 yr 2 mos

Riyadh, Saudi Arabia

Software Developer (Python & MERN Stack)

Pioneersoft

Engineered backend logic with Python and Node.js for international enterprise applications.
Integrated Python data pipelines with React frontends for dynamic real-time reporting.
Optimized MongoDB queries and schemas (~30% responsiveness gain under high concurrency).
Implemented event-driven patterns with Kafka between microservices.
Secured services with Flask, JWT, and Passport for authentication and authorization.

Jun 2021 – Jul 2024

3 yrs 2 mos

Bangalore, India

Full-Stack Developer

Kurage

Designed and maintained complex backends with Python (Django / Flask) over three years.
Built cross-platform mobile features with React Native alongside the web product.
Delivered a high-performance microservices architecture (~25% faster site loads).
Automated internal workflows with Python, reducing operational overhead.
Maintained unit and integration tests targeting 99.9% production reliability.
Resolved 3+ critical production tickets daily with focus on backend stability.

Skills

Primary Stack

Python (Django, Flask, FastAPI), MERN stack (MongoDB, Express, React, Node.js), React Native for cross-platform mobile.

Programming

Python, JavaScript (ES6+), Next.js, React, React Native, Three.js, Java, C++, SQL, HTML5, CSS3 / SCSS.

Databases

PostgreSQL, MongoDB, MySQL, Redis.

Tools & DevOps

Git, Docker, Jenkins, CI/CD, Expo, Kafka, Agile/Scrum, PyTest, Jest & React Testing Library (100% coverage), Claude / AI prompting, Presentation slides, Figma & Google Flow (basics).