Rajan Kashyap
New Delhi
Summary
Backend developer recognized for high productivity and efficient task completion. Specialized in API development, database management, and cloud services integration. Proven ability in problem-solving and collaboration with cross-functional teams, ensuring smooth project execution. Strong work ethic and adaptability drive continuous improvement and readiness for new challenges.
Overview
5
5
years of professional experience
Work History
Lead Backend Developer
DigitalPaani
Gurugram
08.2025 - Current
- Owned backend systems and sprint execution, delivering scalable, production-ready solutions aligned with business goals.
- Worked on AWS cost optimization by analyzing resource utilization, identifying underused services, and implementing instance right-sizing and storage optimization strategies to reduce overall cloud expenses.
Senior Software Engineer
DigitalPaani
Gurugram
09.2024 - 08.2025
- Developed remote control functionality to operate STP/ETP plants through software integration, collaborating closely with the hardware team to enable seamless automation and real-time control.
- Cut costs and improved security by migrating from MongoDB Atlas to self-hosted MongoDB on AWS EC2.
- Developed an Analytical Engine to compute Excel-like formulas on plant sensor data collected from IoT-based data loggers, enabling real-time analysis with flexible time-based configurations.
- Implemented a trigger system for plant issue alerts, supporting one-time, recurring, and conditional triggers.
- Optimized performance and reduced costs by migrating time-series queries from MongoDB to ClickHouse, and established a robust codebase by setting up ESLint and Prettier.
Software Engineer
Sei
Gurugram
11.2023 - 09.2024
- Monitored marketing channels, including websites, documents, app stores, and social media to identify and address non-compliant content.
- Monitored audio and video content for non-compliance issues and used Python with FastAPI to retrieve data from app stores, Play Store, and Trustpilot.
- Designed and developed a robust NestJS-based compliance monitoring system to uncover internal employee-level issues across the organization, integrating Slack, email, and WhatsApp for real-time, proactive alerts and faster resolution.
Software Developer
FunctionUp
Bangalore
10.2021 - 11.2023
- Created a platform for assignment submissions and study material access, improving learning and engagement.
- Created a leaderboard for student performance and a calendar for booking mentor slots to address queries.
- Developed an automated bulk calling feature using Plivo to enhance lead engagement and conversion rates.
Backend Development Intern
Fanplay Games
Noida
08.2021 - 10.2021
- Developed REST APIs, URL shortener, and shopping cart feature.
- Developed a shopping cart feature to manage product selection, quantity, and checkout process.
Education
Bachelor of Science -
Chaudhary Charan Singh University
05.2019
Skills
- Rest APIs
- Nodejs
- JavaScript
- TypeScript
- NestJS
- Expressjs
- MongoDB
- PostgreSQL
- ClickHouse
- GitHub
- GitLab
- Handlebars
- HTML
- CSS
- Python
- Nextjs
- Unit testing
- aws lambda
- CloudWatch
- aws s3
- aws SQS
- EC2
Accomplishments
- FunctionUp Top Techie Award (2021-2022)
- DigitalPaani Nurturing Joyful Community Award (2024)
- Demonstrating Ownership Award (2025)
Projects
- Learning Management System (LMS), Backend with NestJS, MongoDB, JWT auth, adaptive testing., https://github.com/rk8126/LMS-backend
- Find Non-Compliance Content with AI, Analyze webpage content against compliance policy., https://github.com/rk8126/seiright-project
Hobbies and Interests
- Exploring emerging technologies
- Playing Chess
Timeline
Lead Backend Developer
DigitalPaani
08.2025 - Current
Senior Software Engineer
DigitalPaani
09.2024 - 08.2025
Software Engineer
Sei
11.2023 - 09.2024
Software Developer
FunctionUp
10.2021 - 11.2023
Backend Development Intern
Fanplay Games
08.2021 - 10.2021
Bachelor of Science -
Chaudhary Charan Singh University