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Saurabh Kumar

Backend Developer

Building scalable APIs and distributed systems on the cloud. Focused on performance, reliability, and measurable engineering impact.

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class Engineer:
  name = "Saurabh Kumar"
  role = "Backend Developer"
  exp  = "4+ years"
 
  def stack(self):
    return [
      "Python", "Node.js",
      "AWS", "PostgreSQL",
      "Redis", "Docker",
    ]
 
Get to know me

About Me

Software Development Engineer

Backend engineer with 4+ years of experience building scalable microservices and serverless architectures. Skilled in designing APIs, working with message queues, and deploying production-ready services. Focused on building reliable, clean, and scalable backend systems.

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NameSaurabh Kumar
DegreeB.Tech (CSE)
Experience4+ Years
Phone+91 7895291281
Emailsaurabhq36@gmail.com
LocationGurugram, India
Career Journey

Education & Experience

Experience

Spyne
Software Development Engineer
Nov 2024 – Present
  • Designed and built a serverless orchestration system for 3D vehicle reconstruction jobs using AWS Step Functions, SQS, Lambda, and S3. Implemented retry handling, failure tracking, and dead-letter queues to safely retry long-running jobs (up to 45 min) — supporting 500+ jobs per day in production.
  • Reduced SLA breaches by 70% via weighted scheduling and round-robin GPU allocation across image processing workloads, with demand-based dynamic GPU provisioning to scale capacity during traffic spikes and reduce idle compute spend.
  • Reduced media ingestion processing time by 40% by concurrently migrating expiry-prone client-hosted media URLs to internal S3 URLs. Added per-URL retries and fault-tolerant downstream handling, achieving a 99.6% successful conversion rate.
  • Built a MediaKit service to asynchronously apply client-specific banner, billboard, and watermark overlays on processed images with placement-based customization rules.
  • Built an event-driven reporting pipeline using Kafka CDC consumers to aggregate workflow data from MongoDB and relational tables into dashboard-ready tables, enabling visibility into processing status, SLA breaches, and failures.
Innovaccer
Software Development Engineer
Jun 2023 – Nov 2024
  • Core contributor to Snowflake migration for Innovaccer's DAP platform — converting ingestion queries and ETL flows from MySQL to Snowflake's columnar model for 3 data services. Migration contributed to a 30% reduction in analytical query costs for 50+ enterprise clients.
  • Upgraded 6 production microservices from Python 3.8 → 3.11, resolving dependency and async compatibility issues, validating critical service flows, and rolling out in phases with rollback support — improving runtime performance and eliminating end-of-life security risk.
Analytics Vidhya
Software Development Engineer
Sep 2021 – Jun 2023
  • Reduced junk leads by 70% and improved signup conversion by 35% by building an OTP verification microservice with SMS integration, rate limiting, retry logic, and verification attempt limits.
  • Built backend services for a Tournament Portal supporting hiring contests and hackathons end-to-end — REST APIs for contest creation, user registration, live participation, scoring, and integration with third-party proctoring systems.
  • Built real-time LeadSquared CRM integration for centralized lead capture across multiple platforms with an asynchronous queue-based processing pipeline, DLQ-based failure handling, and idempotent processing to prevent duplicates during retries.

Education

B.Tech — Computer Science & Engineering
GLA University
What I work with

My Skills

Python
95%
Node.js
85%
PostgreSQL
90%
MySQL
85%
MongoDB
85%
Redis
85%
Microservices
95%
REST APIs
95%
AWS (Lambda / ECS / S3)
90%
AWS Step Functions / SQS
85%
Kafka (CDC)
80%
Docker
85%
Areas of focus

Domains & Expertise

Backend Development

Designing and shipping scalable, maintainable server-side applications with Django, DRF, and Python — from clean API contracts to complex business logic.

Caching & Performance

Implementing Redis-based caching strategies to dramatically reduce database load, cut response latency, and keep high-traffic systems responsive at scale.

Database Design

Architecting efficient relational and non-relational schemas in PostgreSQL, MySQL, and MongoDB — with a focus on indexing, query optimization, and data integrity.

Microservices

Decomposing monoliths into independently deployable services with clearly defined interfaces — enabling teams to ship faster without stepping on each other.

Serverless Architecture

Building event-driven, serverless pipelines on AWS (Lambda, ECS, SQS, Step Functions) to handle high-throughput workloads with automatic scaling and zero infrastructure management.

Amazon Web Services

Leveraging AWS services (EC2, S3, RDS, Lambda) to build resilient cloud infrastructure — balancing cost, performance, and operational simplicity.

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