Tejas R.
Full Stack Engineer (Java, ReactJs)
I am a Full Stack Engineer with 6+ years of hands-on experience building robust, scalable applications across full-stack and backend domains. My core expertise spans Java, Spring Boot, Spring, JavaScript, Typescript, React.js, Node.js, SQL, and AWS enabling me to deliver end-to-end solutions that are performant, reliable, and user-centric. I have delivered projects across gaming platforms, eCommerce, Education and enterprise-grade web applications, serving 8,000+ active users with measurable business outcomes. My background in Java and ReactJs SQL analytics has driven data-informed decisions that improved player retention by 32% and boosted in-app revenue by 25%, while my full-stack experience has powered platforms with 99.8% uptime and 50,000+ daily API requests. With Java and backend development, I specialize in: • Building RESTful APIs and scalable service architectures • Developing responsive, mobile-friendly, and cross-browser compatible web applications • Designing scalable backend systems capable of handling high traffic and concurrent users • Optimizing application performance, database queries, and cloud infrastructure • SQL query optimization, data modeling, and analytics-driven development • Developing responsive and scalable web applications across frontend and backend systems • Seamlessly connecting frontend interfaces with backend services and databases • Optimizing application performance, reliability, and cloud infrastructure on AWS • User behavior analytics across 20+ KPIs using PostgreSQL and Java On the frontend and full-stack side, I bring solid React.js, Node.js, and MongoDB experience including Redux state management, and real-time WebSocket applications. I am known for: • Strong problem-solving and analytical thinking • Clean, maintainable, and performance-optimized code • Cross-platform development web, mobile, and streaming • Data-driven feature development and revenue optimization • Consistent delivery with 100% client satisfaction across 50+ freelance projects • Quick adaptation to new technologies and environments Here is a brief overview of my technical proficiency: Frontend & Backend : Java, Spring Boot, Spring, JavaScript, TypeScript, Python, React.js, Node.js, Databases: PostgreSQL, MySQL, MongoDB, SQLite Cloud & DevOps: AWS (Lambda, S3, EC2), Git, GitHub Actions, Linux Tools: Postman, Swagger, JIRA, Figma, VS Code Other: REST APIs, WebSockets, Three.js, Redux, JWT Auth I am available 40 hours per week and can comfortably overlap with IST, EST, and PST time zones to ensure smooth communication, daily updates, and timely delivery of milestones. I would be happy to connect and discuss how my experience can support your project requirements. Regards, Tejas R
Earnings and projects
Last 6 months ÷ 4.3 months active (since Jun 2026)
Last 6 months: $7.8k
Billed in all: $8,525$8.5k
$7.8k in the last 6 months
Across 2 contracts
Across 2 contracts
Earnings, last 30 days
Skill rankings: Top 6% in AWS CloudFront
Ranked by MRR among everyone on Upwork with the skill.
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