Senior Full Stack Developer · React & React Native
Building Scalable Web & Mobile Applications with High-Performing Engineering Teams
Full stack developer specializing in React and React Native. 6+ years contributing to production apps across healthcare, government, and enterprise — shipping reliable, well-tested software with cross-functional teams.
About Me
I'm a full stack developer with 6+ years of experience building cross-platform mobile and web applications using React, React Native, and TypeScript — contributing to large-scale platforms that serve millions of users across healthcare, government, and research sectors.
I focus on clean, maintainable code, REST & GraphQL API integrations, performance optimization, and 95%+ test coverage. I work daily with designers, backend developers, and product managers in Agile environments, contributing to code reviews, sprint planning, and architecture decisions.
- Team-first approach: Strong collaborator across design, backend, and product
- React & React Native: Cross-platform mobile and web development expertise
- Production quality: CI/CD, automated testing, and 95%+ code coverage practices
- Performance focus: Bundle optimization, lazy loading, and responsive UI
- Domain experience: Healthcare, government, and research sector projects
- Mentorship: Code reviews and guidance for junior developers
0+
Years Experience
0+
Apps Shipped
0%
Avg. Perf. Gain
95%+
Code Coverage
Credentials
- AWS Certified Developer – Amazon Web Services
- React Native Development – Meta Developer Certification
- Node.js Backend Development – Udemy Certification
- B.Tech Computer Science & Engineering – MDU Rohtak (CGPA 7.2/10)
What I Build
Specialized in React and React Native — delivering production software across healthcare, government, enterprise, and AI domains
Healthcare Technology Solutions
- 90% faster prescription generation
- 99.5% reduction in medication errors
- 50% improvement in patient throughput
Government & Defense Platform Development
- Serve 10M+ users reliably
- 99.9% uptime for critical systems
- Zero security breaches
Enterprise Mobile & Web Application Development
- 40%+ performance improvements
- 70% faster deployment cycles
- 45% bundle size reduction
AI/ML Integration & Automation
- 97% time savings in manual processes
- 95%+ AI accuracy rates
- Intelligent automation of repetitive tasks
Product Development & MVP Launch
- 8-16 week MVP delivery
- Production-ready from day one
- Scalable to millions of users
Technical Leadership & Team Building
- 40% improvement in team velocity
- 60% reduction in code review time
- 95%+ code coverage standards
Selected Projects
Applications I've contributed to as part of engineering teams and as a founder
ECHS Beneficiary Platform — Digital Healthcare for Ex-Servicemen
My role: React Native & React.js development on a cross-functional team
The existing manual system created bottlenecks: paper-based card applications, no transparency for beneficiaries, phone-based appointment chaos, and data silos across 400+ polyclinics serving millions of ex-servicemen.
10M+
Platform Users
700K+
Play Store Downloads
ECHOHIRE — AI Recruitment Platform (Personal Project)
My role: Founder — full-stack development & product
Startups and IT teams spend excessive time on manual resume screening and inconsistent interview processes, making it hard to hire efficiently at scale.
97% faster
Screening Speed
React + Node.js
Platform
IMS — Secure Enterprise Messaging Platform
My role: Frontend development for web and mobile messaging features
The organization needed a secure, self-hosted communication platform with real-time messaging, file sharing, and collaboration tools—built without reliance on external commercial services.
5,000+
Platform Users
WebSocket
Real-time Messaging
MedsKey — AI Voice Prescription Application
My role: Mobile & web frontend development, API integration
Physicians spent significant time on manual prescription entry, with errors from handwriting and limited digital workflow integration across clinics and pharmacies.
Significantly reduced
Prescription Time
Mobile + Web
Platform Type
Experience
A track record of shipping production software with cross-functional teams
Senior Full Stack Developer
SourceDOTcom Pvt Ltd
Gurugram, Haryana
Part of the engineering team building cross-platform mobile and web applications for healthcare and government clients, including large-scale beneficiary platforms and healthcare tools.
- Contributed to ECHS Beneficiary mobile and web applications used by millions of ex-servicemen, with 700K+ Play Store downloads
- Worked on MedsKey and related healthcare modules using React Native, TypeScript, and GraphQL integrations
- Contributed to enterprise messaging and GIS mapping features as part of cross-functional Agile teams
10M+ users
Platform Reach
15+
Apps Contributed
40% faster
Performance
95%+
Code Coverage
Full Stack Mobile Developer
ICAR - IVRI
Bareilly, Uttar Pradesh
Member of the mobile development team delivering cross-platform research and field applications for India's premier veterinary research institute.
- Contributed to 20+ React Native applications for veterinary research, farmer support, and field data collection
- Built offline-first features for low-connectivity rural areas with multilingual support
- Integrated REST and GraphQL APIs and improved UI performance by 50% through optimization
20+
Apps Contributed
India-wide
National Reach
50% faster
Performance
90%
User Satisfaction
Mobile Application Developer
Krenai Services
Gurugram, Haryana
Contributed to cross-platform mobile and web applications for startup clients as part of a small engineering team.
- Developed React.js and React Native features with reusable component libraries
- Integrated REST and GraphQL APIs with Redux state management
- Achieved 95% code coverage through Jest testing and Agile delivery practices
95%
Code Coverage
On-time
Delivery
Web + Mobile
Platforms
Tech Stack
Technologies I use daily across web and mobile projects
React & Mobile Development
State Management & APIs
Testing, CI/CD & DevOps
Backend, Cloud & AI/ML
Specialized Domains
Certifications & Education
AWS Certified Developer
Amazon Web Services
Cloud infrastructure, deployment, and scaling
React Native Development
Meta Developer Certification
Advanced mobile app development
Node.js Backend Development
Udemy Certification
Building scalable backend services
B.Tech Computer Science & Engineering
Dronacharya College of Engineering, MDU Rohtak
2016–2020 | CGPA: 7.2/10
How I Work
My approach to engineering, collaboration, and delivering quality software
Team-first development
I work best as part of cross-functional teams—collaborating with designers, backend engineers, and product managers to ship features that meet real user needs.
Quality through testing
I prioritize Jest, Cypress, and Detox test coverage, code reviews, and CI/CD practices so the team can deploy with confidence.
Clear, maintainable code
Component-based architecture, TypeScript, and consistent patterns make codebases easier for the whole team to extend and maintain.
Performance matters
Bundle optimization, lazy loading, and responsive UI improvements—I've contributed to 40–50% performance gains on production apps.
Honest communication
I flag blockers early, participate actively in sprint planning and standups, and share knowledge through code reviews and mentoring.
Continuous learning
From government healthcare platforms to research mobile apps, I adapt quickly to new domains and technology requirements.
Let's Connect
Reach out on WhatsApp to schedule a call, or connect via LinkedIn and GitHub
+91 8171330405
Fastest way to reach me — tap to chat or schedule a call
linkedin.com/in/devansh-kumar-dev
Connect professionally on LinkedIn
GitHub
github.com/devansh-sudo
View my code and open-source projects
Based in Gurugram, Haryana, India · Usually responds within 24 hours