Tamoor Ashiq Chheena
Senior Software Engineer
9+ years building production-grade applications with React Native, React, Next.js, Node.js, and AWS
About Me
Senior Software Engineer specializing in full-stack development and mobile applications
Senior Software Engineer with 9+ years of production-grade experience building and owning scalable software solutions across the full development lifecycle. Expert in Node.js/JavaScript/TypeScript with strong AWS cloud experience including serverless architectures (Lambda, API Gateway, DynamoDB, S3). Proven track record of delivering mission-critical systems serving millions of users with focus on observability, incident management, and operational excellence.
Senior Software Engineer with 9+ years of experience specializing in React Native cross-platform mobile development. Proven expertise in greenfield application development, delivering scalable solutions from architecture to deployment. Strong track record in building insurance, fintech, and enterprise applications with focus on performance optimization and seamless user experiences.
Production Ready
9+ years delivering mission-critical systems serving millions of users
Performance Focused
Reduced latency by 45%, improved uptime to 99.9%, optimized costs by 40%
Team Leadership
Mentoring engineers, code reviews, setting best practices across teams
Technical Expertise
Full-stack proficiency with modern technologies and proven track record in building scalable solutions
📱Mobile Development
- React Native (9+ years)
- Expo
- iOS/Android native modules
- Cross-platform architecture
⚡Languages & Frameworks
- Node.js
- JavaScript/TypeScript
- Express.js
- Next.js
- React
- Redux
- Zustand
☁️AWS & Cloud
- AWS Lambda
- API Gateway
- DynamoDB
- S3
- CloudFormation
- EC2
- CloudWatch
- Serverless Architecture
💾Databases
- DynamoDB
- PostgreSQL
- MongoDB
- MySQL
- Redis
- Firebase
- Supabase
🛠️DevOps & Tools
- Docker
- Kubernetes
- CI/CD Pipelines
- Jenkins
- Git
- Infrastructure as Code
🏗️APIs & Architecture
- REST APIs
- GraphQL
- Apollo Federation
- Microservices
- Event-Driven Architecture
✅Testing & Quality
- Test-Driven Development
- Jest
- Mocha.js
- Cucumber
- Unit/Integration Testing
- BDD/ATDD
🎯Engineering Practices
- Agile/Scrum
- SOLID Principles
- Design Patterns
- Code Reviews
- Mentorship
- Security Best Practices
Track Record of Excellence
Professional Experience
Full-Stack Developer
Bee Techy, LLC
- Build, test, and own full-stack software engineering deployments using Node.js, TypeScript, and Next.js from inception to production
- Design and implement serverless REST APIs and GraphQL services using AWS Lambda and API Gateway
- Implement comprehensive monitoring and logging solutions, reducing incident response time by 40%
- Practice test-driven development using Jest and Mocha.js, maintaining 90%+ code coverage
Senior Software Engineer
eeva.ai, Canada (Remote)
- Architected and deployed production-grade microservices using Node.js and TypeScript on AWS infrastructure
- Developed greenfield React Native mobile app MVP from scratch, achieving 25% increase in user engagement
- Built and owned GraphQL APIs and REST endpoints following architectural best practices
- Implemented comprehensive instrumentation and observability tooling for proactive incident management
Senior Software Engineer
Crowdbotics, Remote, United States
- Developed high-traffic backend applications processing millions of API requests daily with 99.9% uptime
- Architected scalable serverless microservices with Firebase and AWS, increasing efficiency by 40%
- Established CI/CD pipelines for automated testing, reducing deployment time by 50%
- Achieved 90%+ code coverage following TDD/BDD practices, reducing production bugs by 35%
Senior Software Engineer
Airvon
- Led end-to-end backend development using Node.js and TypeScript with 95% on-time delivery
- Optimized AWS cloud deployments using Docker and Kubernetes, reducing downtime by 40%
- Designed secure REST APIs and GraphQL services following AWS security best practices
- Utilized monitoring tools to troubleshoot complex issues across distributed systems
Senior Software Engineer
Khaleef Technologies
- Built scalable backend systems using Node.js on AWS and Firebase for thousands of concurrent users
- Optimized database operations (MongoDB, MySQL) reducing API latency by 45%
- Integrated event-driven architecture using Kafka for asynchronous processing
- Mentored team members on Node.js backend development and API design
Software Engineer
Khaleef Technologies
- Developed full-stack applications using JavaScript and Node.js
- Collaborated with cross-functional teams to integrate backend services with frontend applications
- Implemented automated testing and continuous integration workflows
- Participated in agile ceremonies contributing to improved team velocity
Featured Projects
eeva.ai
Home Life Management mobile app with React Native and Supabase integration
Housr Student Living
Student accommodation platform with property management and booking features
GAGO Social Gaming App
Multi-platform social gaming application with real-time multiplayer features
Swapster
Cross-platform mobile application for item exchange and marketplace
Cricwick Fantasy
Fantasy cricket platform with live match tracking and tournament management
Published across major app stores with millions of downloads
Client Testimonials
Trusted by clients worldwide for delivering exceptional results
"Tamoor was great! Friendly and productive, we truly felt like went above and beyond. We hope to work together again soon."
Full-time React Native Developer
Upwork Client
"He was always there to help and cater to the needs of my development team. He positively contributes to the overall performance of mobile development through consistent, high-quality work. He is excellent in React Native and displays a cooperative spirit while performing mobile development tasks."
Front-End Software Developer
Upwork Client
"I truly appreciate your proactive approach to problem-solving."
API Integration in React Native
Upwork Client
"I had a pleasant and productive experience. The work was completed successfully, and I will continue to hire for future work on this project."
Fixing React Native Image Loading Issue for iOS 14
Upwork Client
"I'm very satisfied with the results. The fee is reasonable, and your attitude was great."
React Native App Development
Upwork Client
"He positively contributes to the overall performance of mobile development through consistent, high-quality work. He is excellent in React Native and displays a cooperative spirit."
App Update in React Native
Upwork Client
Let's Work Together
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Available for immediate start on contract basis
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