Senior Full Stack Developer (IoT & React)

VARUN S D

Senior Full Stack Developer

Shimoga, Karnataka • ********@*****.*** • +91-819******* • linkedin.com/in/varun-sd PROFESSIONAL SUMMARY

Senior Full Stack Developer with 8 years of experience building and scaling web and mobile applications across PHP/Laravel, Node.js, and the React ecosystem. Specialized in real-time data systems, having engineered IoT telemetry and live vehicle-tracking platforms serving 25+ concurrent vehicles at 99.9% uptime. Has led small development teams and delivered products to multiple client organizations. Currently building React and React Native applications using AI-assisted development workflows (Claude Code). Strong in API design, database optimization, and cloud deployment. SKILLS

Languages & Frameworks: PHP, Laravel, Node.js, JavaScript, React, React Native, Angular Backend & Data: RESTful APIs, WebSockets, SQL/NoSQL, MySQL, MongoDB, caching, query optimization

Cloud, DevOps & Tooling: Azure, CI/CD pipelines, Git / version control, AI-assisted development

(Claude Code)

WORK EXPERIENCE

Full Stack Developer EngineCAL — Bengaluru, India 08/2025 – Present

• Built scalable backend services ingesting continuous vehicle telemetry every 4 seconds from connected IoT devices.

• Designed APIs and cloud infrastructure enabling simultaneous live tracking of 25+ vehicles.

• Developed a real-time race-monitoring module delivering instant updates on positions, speed, and performance metrics.

• Collaborated with data scientists, embedded engineers, and frontend teams to integrate live data visualization.

• Optimized infrastructure for cost and performance, sustaining 99.9% uptime across live tracking systems.

• Building cross-platform mobile and web front-ends in React and React Native, using AI-assisted development (Claude Code) to accelerate delivery.

Full Stack Developer Step In Technologies — Shimoga, India 06/2017 – 07/2025

• Delivered full-stack web applications for 4–6 client organizations, owning the complete software development lifecycle from requirements and architecture through deployment and maintenance.

• Led a team of 4 developers, coordinating delivery, code quality, and technical decisions across concurrent projects.

• Built an ERP college-management system used by 800+ students, covering online admissions, fee collection with integrated payment gateway, attendance, online exams, and student progress tracking

(Laravel, MySQL).

• Developed an HRMS platform serving 200+ employees, handling payroll, biometric attendance, and leave management (Laravel, MySQL).

• Designed and documented RESTful APIs, and modified, tested, and debugged existing systems to improve reliability and performance.

SELECTED PROJECTS

Eva Fleet — Real-time vehicle tracking platform gathering live telemetry from IoT devices with a 4–10 second delay. Used WebSockets and caching for low-latency streaming and smooth map visualization of vehicle movement. (Laravel, MySQL, JavaScript)

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Transportation Management — Digital tool for monitoring and managing fleets, including location tracking, maintenance scheduling, fuel-consumption management, and driver safety. (Node.js, MySQL, JavaScript)

ERP & HRMS Suites — Education ERP serving 800+ students and an HRMS serving 200+ employees, covering admissions, online payments, attendance, payroll, and leave management. (Laravel, MySQL, JavaScript)

EDUCATION

Bachelor of Computer Applications S R N M College, Shimoga 05/2017 LANGUAGES

English (Full Professional Proficiency) • Kannada (Native / Bilingual Proficiency)

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