Puja Singh
Bengaluru
Summary
Senior backend engineer with 10+ years of experience designing and building scalable distributed systems. Experienced in high-throughput backend platforms, microservices architecture, and data-intensive applications. Previously built large-scale commerce infrastructure at Flipkart and backend services at Zipcar. Recently built and sold a GenAI-powered documentation platform leveraging RAG pipelines and LLM infrastructure.
Overview
11
11
years of professional experience
Work History
Senior Software Engineer
Zipcar
Bengaluru
09.2025 - 03.2026
- Worked on backend services powering promotions, challenges, and engagement systems used across US and Canadian markets.
- Built and improved microservices supporting high-traffic promotional campaigns and user engagement workflows.
- Maintained production services with sub-200ms p95 latency under high load.
- Contributed to the Challenges engagement initiative that resulted in ~2.7% increase in revenue.
- Helped establish engineering practices and contributed to the growth of the Bengaluru engineering team.
- Technologies: PostgreSQL, Kotlin, Java, Groovy, gRPC, Message Queues, Microservices Architecture
Software Engineer
Flipkart
Bengaluru
06.2021 - 12.2024
- Worked on backend infrastructure powering large-scale commerce and quick-commerce operations.
- Led the re-architecture of a high-throughput message relaying platform handling ~10k QPS, improving reliability and scalability.
- Built backend systems for Flipkart's quick-commerce orchestration platform used for large-scale grocery planning.
- Unified multiple grocery infrastructure systems, reducing orchestration infrastructure costs by 57%.
- Designed distributed services and data pipelines supporting internal commerce workflows.
- Mentored junior engineers and collaborated across multiple teams to deliver large-scale platform improvements.
- Technologies: Java, Ruby, Redis, MongoDB, MySQL, Microservices Architecture, Distributed Systems
Lead Data Engineer
Hewlett Packard
Bengaluru
03.2020 - 06.2021
- Worked with startup teams to build scalable backend and data systems supporting B2B and B2C applications.
- Designed and implemented data pipelines enabling analytics and operational reporting.
- Built scalable backend services and infrastructure for early-stage startups.
- Technologies: Python, Data Pipelines, Distributed Data Processing
Software Engineer
Certa
Bengaluru
12.2018 - 02.2020
- Developed backend services supporting enterprise compliance and risk management systems.
- Technologies: Backend APIs, Microservices, Distributed Systems
Software Engineer
Myra Medicines
Bengaluru
01.2017 - 12.2018
- Built backend services supporting pharmacy operations and order management systems.
- Technologies: Backend Services, API Development, Database Systems
Software Engineer
Sportskeeda
Bengaluru
10.2014 - 12.2016
- Developed backend infrastructure supporting high-traffic sports media publishing platform.
- Technologies: Backend Development, Web Platforms
Education
B.Tech - Computer Science and Engineering
Netaji Subhash Engineering College
Skills
- Java
- Python
- Kotlin
- Ruby
- Groovy
- SQL
- Backend Engineering
- Distributed Systems
- Microservices Architecture
- GRPC
- API Design
- Redis
- MongoDB
- PostgreSQL
- MySQL
- Message Queues
- RAG Pipelines
- LLM Integrations
- Self-hosted Models
- AI-powered Search
- Docker
- Kubernetes
- AWS
- Google Cloud
Projects
Founder - GenAI Documentation Platform, Built an AI-powered documentation and knowledge retrieval platform for developer teams., Designed and built a GenAI documentation platform enabling automated knowledge bases and semantic search across engineering documentation using RAG., Integrated multiple LLMs including self-hosted models and API-based providers. - Python, FastAPI, MongoDB, PostgreSQL, RAG, MCP, LLM APIs
Personal Information
Title: Senior Backend Engineer
Languages
- Java
- Python
- Kotlin
- Ruby
- Groovy
- SQL
Work Preference
Location Preference
On-SiteRemoteHybridSalary Range
₹4500000/yr - ₹10000000/yrTimeline
Senior Software Engineer
Zipcar
09.2025 - 03.2026
Software Engineer
Flipkart
06.2021 - 12.2024
Lead Data Engineer
Hewlett Packard
03.2020 - 06.2021
Software Engineer
Certa
12.2018 - 02.2020
Software Engineer
Myra Medicines
01.2017 - 12.2018
Software Engineer
Sportskeeda
10.2014 - 12.2016
B.Tech - Computer Science and Engineering
Netaji Subhash Engineering College