Pankaj Kumar Yadav
Software Enginner
Noida,UP
Summary
Senior Backend Engineer with 11+ years of experience in designing, scaling, and operating mission-critical distributed systems serving 50M+ users. Specialist in high-concurrency systems, distributed architecture, low-latency services, and fault-tolerant platform design. Proven track record of applying pragmatic design principles to resolve systemic bottlenecks, increasing payment success rates from 50% to 75%. Expert in balancing high-performance engineering with cost-efficiency and agile delivery.
Overview
11
11
years of professional experience
Work History
Senior Software Developer
Loco
Noida, UP
12.2024 - Current
- ○ High-Scale Architecture: Designed a Geo-Fencing engine for the HomeFeed system, delivering low-latency personalization to 50M+ users using a pragmatic, event-driven approach.
○ Global Performance Strategy: Orchestrated cross-region service migrations (Brazil/India → Dublin), optimizing inter-service communication via HAProxy persistent connections to minimize global P99 latency.
○ Infrastructure Resilience: Established GitOps-based deployment cycles using ArgoCD and Helm; spearheaded Chaos Engineering (LitmusChaos) to harden production workflows against cascading failures.
○ Efficiency Engineering: Reduced search engine storage overhead by 70% through advanced data pruning, significantly reducing infrastructure cost.
Lead Backend Engineer
Fisker
Pune, MH
08.2023 - 12.2024
- ○ Data Protocol Evolution: Led the migration from JSON to Protobuf for Kafka messaging, achieving a 30% performance uplift and 20% infrastructure cost savings.
○ Storage Optimization: Automated vehicle signal data transformation from CSV to Parquet, reducing storage requirements by 75% while enabling high-speed analytical queries.
○ Concurrency Governance Runtime Stability: Architected application-wide concurrency governance in Go, introducing centralized worker-pool orchestration and controlled task scheduling to eliminate memory-driven pod crashes under burst traffic.
Lead Backend Engineer
Classplus
Noida, UP
04.2020 - 07.2023
- ○ Distributed Transaction Reliability (SAGA Architecture): Re-architected a failure-prone payment workflow into a SAGA-based state machine with idempotent execution, resumable states, and compensating transactions, increasing transaction success rates from 50% to 75% while eliminating data inconsistencies.
○ Service Decoupling: Spearheaded the extraction of the User Service from the legacy monolith, improving RDBMS performance, and accelerating engineering velocity by 30%.
○ Customer Engagement: Designed and developed an end-to-end coupon service that increased customer engagement by 25%–35%.
○ Optimized database queries and APIs with DevOps, improving API response time by 40%.
○ API Excellence: Optimized complex RDBMS queries and API interfaces, resulting in a 40% improvement in response times and
supporting a 45% increase in conversion during peak traffic.
Founding Engineer
SmartFarms Agritech
Gurgaon, HR
09.2019 - 04.2020
- ○ Founding Architecture: Defined the technical foundation and data models for a scalable Agritech eCommerce platform, facilitating 20% Q1 growth.
○ Implemented secure payment gateways and optimized checkout processes for increased conversion rates.
Senior Software Developer
Valuecoders
Gurgaon, HR
04.2018 - 09.2019
Associate Consultant Developer
Oodles Technologies
Gurgaon, HR
10.2014 - 03.2018
Skills
- Go
- JavaScript
- TypeScript
- SQL
- MySQL
- MongoDB
- Redis
- NoSQL
- NodeJS
- Gin (Go framework)
- Expressjs
- GRPC
- Kafka
- AWS (Amazon Web Services)
- Kubernetes
- Docker
- Git
- Jira
- Microservices
- Event Driven Architecture
- Restful APIs
- Distributed Systems
- API Design
- System Design
- Object-Oriented Programming (OOP)
- Chaos engineering
- Canary Deployment
- Serverless
- Technical Mentorship
- Code Reviews
- Agile/Scrum Leadership
- Technical Hiring
Timeline
Senior Software Developer
Loco
12.2024 - Current
Lead Backend Engineer
Fisker
08.2023 - 12.2024
Lead Backend Engineer
Classplus
04.2020 - 07.2023
Founding Engineer
SmartFarms Agritech
09.2019 - 04.2020
Senior Software Developer
Valuecoders
04.2018 - 09.2019
Associate Consultant Developer
Oodles Technologies
10.2014 - 03.2018