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. I contribute to production applications across healthcare, government, and enterprise domains—working closely with designers, backend engineers, and product teams to ship reliable, well-tested software.
Trusted By Industry Leaders
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. My work has been part of engineering teams delivering software for healthcare, government, and research organizations—including large-scale platforms that serve millions of users.
I focus on writing clean, maintainable code, integrating REST and GraphQL APIs, optimizing application performance, and maintaining high test coverage. I collaborate daily with UI/UX designers, backend developers, and product managers in Agile environments, and I contribute to code reviews, sprint planning, and architectural discussions.
Whether working on a national healthcare beneficiary app at SourceDOTcom, research mobile tools at ICAR-IVRI, or my own side project ECHOHIRE, I bring the same commitment to quality, teamwork, and continuous improvement.
- 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 of Development Experience
0+
Production Apps Contributed To
0%
Avg. Performance Improvement
95%+
Code Coverage on Major Projects
Certifications & 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)
Projects I've Worked On
Applications I contributed to as part of engineering teams at SourceDOTcom and ICAR-IVRI
MedsKey
AI Voice Prescription Platform
Client: Healthcare Technology Providers
Employer: SourceDOTcom Pvt Ltd
Healthcare application I contributed to at SourceDOTcom—featuring AI-assisted voice prescription workflows, built with React Native and web interfaces as part of a cross-functional engineering team.
- AI voice recognition with 95%+ medical term accuracy
- Smart prescription generation with drug interaction warnings
- Multi-specialty support with customizable templates
- HIPAA-compliant secure data handling
Mobile + Web UI
My contribution
React Native
Stack
GraphQL
APIs
SourceDOTcom
Team
ECHS Beneficiary Platform
National Healthcare App — Team Project
Client: ECHS, Ministry of Defence
Employer: SourceDOTcom Pvt Ltd
Large-scale healthcare platform I contributed to at SourceDOTcom for ECHS beneficiaries—mobile and web applications for appointments, health records, and smart card services, built collaboratively by a full engineering team.
- Smart card application & RFID-enabled status tracking
- Online appointment booking across 400+ facilities
- Real-time OPD/IPD monitoring and digital health records
- Medicine availability checker and ambulance integration
10M+ users
Platform reach
700K+
Downloads
React Native dev
My role
SourceDOTcom
Team
HLFPPT Healthcare Ecosystem
Multi-Stakeholder Healthcare Platform
Client: Healthcare Ecosystem Partners
Employer: SourceDOTcom Pvt Ltd
Healthcare ecosystem platform I contributed to at SourceDOTcom—connecting patients, providers, pharmacies, and diagnostic centers through React and React Native applications built by a cross-functional team.
- Patient app with digital health records and teleconsultations
- Provider portal with e-prescriptions and analytics dashboard
- Pharmacy integration with digital prescription verification
- Diagnostic center module with digital report delivery
4 platforms
Stakeholders Unified
40% reduction
Admin Overhead
HIPAA certified
Compliance
IMS – Instant Messaging System
Secure Messaging — Team Project
Client: Assam Rifles Defense Forces
Employer: SourceDOTcom Pvt Ltd
Enterprise messaging platform I contributed to at SourceDOTcom for a defense organization—implementing React and React Native interfaces for secure communication features as part of a larger engineering team.
- End-to-end encrypted real-time messaging and video calling
- Google Calendar-like scheduling and Jira-like task management
- OneDrive-like document repository with version control
- Multi-file AI analysis with source attribution
Web + Mobile UI
My contribution
Messaging
Features
WebSockets
Real-time
SourceDOTcom
Team
GIS Hospital Mapping System
Facility Mapping — Team Project
Client: ECHS, Ministry of Defence
Employer: SourceDOTcom Pvt Ltd
GIS mapping module I contributed to at SourceDOTcom for ECHS—React.js interfaces with Leaflet.js for hospital and polyclinic discovery, built collaboratively with backend and product teams.
- Interactive OpenStreetMap visualization of all ECHS facilities
- Point-to-point and multi-stop route optimization
- Nearest facility finder with specialty and service filters
- Administrative analytics and coverage gap identification
400+
Facilities Mapped
1,800+
Hospitals Connected
60% faster
Discovery Speed
RFID-Enabled MedsKey Access Control
Mobile RFID Card Reading & Issuance
Client: ECHS, Ministry of Defence
Employer: SourceDOTcom Pvt Ltd
RFID/NFC card reading features I contributed to within the ECHS mobile application at SourceDOTcom—React Native modules for card verification and field operations.
- NFC reading on Android/iOS and USB card reader via OTG
- On-the-spot card generation with biometric verification
- Offline card verification for remote locations
- Central ECHS database integration with audit trails
60% faster
Card Processing
Fully portable
Infrastructure
Military-grade
Security
ECHOHIRE
AI Recruitment Platform — Built independently
My personal founder project—an AI recruitment platform I built independently with React.js and Node.js, separate from my team work at SourceDOTcom.
- AI resume screening: 100+ resumes in under 5 minutes with 0–100 fit scores
- Automated 24/7 video interviews with AI evaluation
- AI-generated candidate scorecards and hiring recommendations
- DPDP Act compliant with full audit trails
97%
Screening Time Saved
60% faster
Hiring Speed
97%
AI Accuracy
2024
Founded
Strategic Services & Expertise
Comprehensive technology solutions tailored for enterprise success
Healthcare Technology Solutions
Transform healthcare delivery with AI-powered platforms, telemedicine solutions, and HIPAA-compliant systems that improve patient outcomes and operational efficiency.
Key Deliverables
- AI voice prescription systems
- Telemedicine and patient management platforms
- RFID/NFC healthcare integration
- Healthcare mobile applications
- HIPAA and data protection compliance
Typical Outcomes
- 90% faster prescription generation
- 99.5% reduction in medication errors
- 50% improvement in patient throughput
- Full regulatory compliance
Government & Defense Platform Development
Build secure, scalable platforms for government and defense sectors with millions of users, maintaining 99.9% uptime and government-grade security standards.
Key Deliverables
- National-scale citizen service platforms
- Defense communication systems
- Secure data management and audit trails
- Multi-stakeholder ecosystems
- Offline-first architecture for remote areas
Typical Outcomes
- Serve 10M+ users reliably
- 99.9% uptime for critical systems
- Zero security breaches
- 80%+ digital adoption rates
Enterprise Mobile & Web Application Development
Architect and deliver production-grade cross-platform mobile and web applications with exceptional performance, user experience, and scalability.
Key Deliverables
- React Native cross-platform mobile apps
- React.js and Next.js web applications
- Scalable architecture design
- Performance optimization and CI/CD pipelines
- Quality assurance with 95%+ code coverage
Typical Outcomes
- 40%+ performance improvements
- 70% faster deployment cycles
- 45% bundle size reduction
- 4.4+ app store ratings
AI/ML Integration & Automation
Integrate cutting-edge AI and machine learning capabilities into existing products or build new AI-powered solutions from scratch.
Key Deliverables
- AI voice recognition integration
- Natural language processing systems
- Document intelligence and analysis
- Automated workflow engines
- Custom AI model integration
Typical Outcomes
- 97% time savings in manual processes
- 95%+ AI accuracy rates
- Intelligent automation of repetitive tasks
- Data-driven decision making
Product Development & MVP Launch
Take products from concept to market launch, handling full-stack development, infrastructure, and go-to-market technical strategy.
Key Deliverables
- Complete product architecture
- Full-stack development (mobile + web)
- Cloud infrastructure setup
- DevOps and deployment automation
- Performance optimization and QA
Typical Outcomes
- 8-16 week MVP delivery
- Production-ready from day one
- Scalable to millions of users
- Investor-ready technical foundation
Technical Leadership & Team Building
Provide fractional CTO services, technical strategy, team leadership, and process optimization for growing technology teams.
Key Deliverables
- Technical strategy and roadmap development
- Team hiring, mentorship, and training
- Code review and quality standards
- Process optimization and best practices
- Technology stack selection
Typical Outcomes
- 40% improvement in team velocity
- 60% reduction in code review time
- 95%+ code coverage standards
- Improved team retention
Client Success Stories
Team projects and personal work — showing my contributions, not sole ownership
ECHS Beneficiary Platform — Digital Healthcare for Ex-Servicemen
Client: Ex-Servicemen Contributory Health Scheme (ECHS), Ministry of Defence
Employer: SourceDOTcom Pvt Ltd
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.
As part of the SourceDOTcom engineering team, I contributed to the mobile and web applications—including beneficiary services, appointment booking, offline-first mobile features, and RFID/NFC integration modules—working alongside backend, QA, and product teams.
10M+
Platform Users
700K+
Play Store Downloads
400+
Polyclinics Connected
4.4/5
App Rating
10M+
Platform Users
Platform metrics reflect the full engineering team's collective work.
MedsKey — AI Voice Prescription Application
Client: Healthcare Technology Providers
Employer: SourceDOTcom Pvt Ltd
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
GraphQL APIs
Integration
Jest coverage
Testing
IMS — Secure Enterprise Messaging Platform
Client: Assam Rifles (Defense Organization)
Employer: SourceDOTcom Pvt Ltd
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
Web + Mobile
Platforms
Self-hosted
Security
ECHOHIRE — AI Recruitment Platform (Personal Project)
Client: ECHOHIRE (Founder)
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
Live product
Status
echohire.in
Website
GIS Hospital & Polyclinic Mapping for ECHS Facilities
Client: Ex-Servicemen Contributory Health Scheme (ECHS)
Employer: SourceDOTcom Pvt Ltd
My role: React.js frontend for mapping and facility discovery
Beneficiaries needed an easier way to find nearest ECHS facilities across hundreds of polyclinics and empaneled hospitals nationwide.
400+
Facilities Mapped
1,800+
Hospitals Listed
OpenStreetMap
Mapping
React + PostGIS
Stack
IVRI Research & Field Mobile Applications
Client: Indian Veterinary Research Institute (ICAR-IVRI)
My role: React Native developer on the mobile team
Research teams needed mobile tools for field data collection, disease surveillance, and farmer support—working in rural areas with limited connectivity.
20+
Apps Contributed
Yes
Offline Support
India-wide
Deployment
95%
Code Coverage
Professional Journey
A track record of technical leadership and business impact
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
- Improved application performance through code splitting, lazy loading, and bundle optimization (45% reduction)
- Participated in CI/CD setup, code reviews, and Jest/Cypress/Detox testing across web and mobile
- Collaborated with UI/UX designers, backend developers, and product managers; mentored junior developers
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
- Worked in Agile sprints with designers and backend teams; maintained 95% code coverage with Jest
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
- Collaborated with designers and backend developers on on-time project delivery
95%
Code Coverage
On-time
Delivery
Web + Mobile
Platforms
Technology Expertise
Enterprise-grade solutions built on modern, proven technologies
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 We Work Together
A proven framework for delivering enterprise solutions
Discovery & Planning
- Comprehensive requirements gathering and stakeholder interviews
- Technical feasibility assessment and architecture design
- Technology stack recommendation and risk mitigation
- Project timeline, milestones, and success criteria definition
Deliverable
Technical specification, architecture diagrams, project plan
Timeline: Week 1–2
Agile Development
- 2-week sprint cycles with daily standups and progress tracking
- Continuous integration, automated testing, and regular demos
- Code reviews, quality checks, and documentation as we build
- Adaptive planning based on stakeholder feedback
Deliverable
Working software increments every 2 weeks
Timeline: Weeks 3–14
Quality Assurance & Security
- Automated testing targeting 95%+ code coverage
- Performance benchmarking and load testing for scalability
- Security audits and compliance verification (HIPAA, government standards)
- Cross-platform compatibility and user acceptance testing
Deliverable
Test reports, performance metrics, security audit
Timeline: Ongoing throughout development
Deployment & Launch
- Production infrastructure setup and CI/CD configuration
- Staged rollout with monitoring, alerting, and rollback capability
- App Store and Play Store submissions
- Go-live support and team training handoff
Deliverable
Live production system
Timeline: Week 15–16
Optimization & Support
- Performance monitoring and proactive optimization
- Feature enhancements based on user feedback
- Scalability optimization and security updates
- Knowledge transfer and team capability building
Deliverable
Continuous improvement and ongoing partnership
Timeline: Post-launch
How I Work
My approach to collaborating with engineering teams 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.
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