Asia/Kolkata
Introduction
Work Experience
Open Source
Education
Technical Skills
Asia/Kolkata
English
Hindi
Marathi

Sumit Vairagar

Technology Consultant | Backend Engineer | AI Builder
I'm a Technology Consultant and Software Engineer with 14 years of experience delivering scalable backend systems. My work sits at the intersection of event-driven architecture and modern agentic AI development — I use tools like Claude Code, Kiro CLI, and GitHub Copilot not as shortcuts, but as force multipliers across the full delivery lifecycle: codebase comprehension, story design, implementation planning, development, and legacy modernization.

Currently at Technogise, I work on complex distributed systems — most recently owning end-to-end delivery of a business-critical feature inside a large-scale legacy system, from codebase comprehension to production. Before that, I led and mentored cross-functional teams of 15+ engineers at ThoughtWorks, providing strategic technical guidance on system architecture.

Work Experience

TechnogiseMay 2025 – Present
Technology Consultant
  • Used Claude Code and Kiro CLI to own end-to-end delivery of a business-critical feature in a large-scale legacy distributed system — from codebase comprehension to production.
  • Leveraged Claude Code to deep-dive a complex legacy codebase, rapidly mapping architecture, domain boundaries, and integration points.
  • Translated high-level business requirements into scalable technical designs, collaborating directly with stakeholders to resolve edge cases.
ThoughtWorksSep 2021 – May 2025
Lead Consultant
  • Led and mentored a cross-functional team of 15+ engineers, driving high-impact delivery across multiple projects.
  • Architected and delivered a mission-critical, event-driven customer onboarding system with resilient distributed transactions using Java, Spring Boot, Kafka, and the SAGA pattern.
  • Collaborated with stakeholders to provide strategic technical guidance on system architecture.
Springer NatureJan 2019 – Sep 2021
Software Development Engineer (Backend)
  • Spearheaded adoption of Kotlin and TDD for backend systems, improving code quality and team velocity.
  • Integrated multiple microservices with Razorpay to build a robust payment processing system using Kotlin, Java, and Spring Boot.
  • Mentored junior engineers, improving team performance and capability.
Lava Labs Sdn BhdFeb 2017 – Dec 2018
Technical Lead
  • Designed and developed backend for a multitenant workforce management system with REST APIs for web and mobile clients.
  • Improved route search performance from 30s to 2s — a 15x improvement — using Java, Spring Boot, and MySQL.
Yash TechnologiesMar 2016 – Feb 2017
Module Lead
  • Engineered and led a team on an HR process management system for a large enterprise.
  • Improved operational efficiency by 30% through streamlined workflows.
MMF SystemsDec 2013 – Feb 2016
Senior Software Engineer
  • Maintained and enhanced a critical healthcare solution; onboarded 5 new clients, increasing revenue by 15%.
  • Built an internal cloud server management tool, reducing infrastructure costs by 50%. Tech: Java, Spring, Hibernate, MySQL, jQuery, AWS.
SPAR SolutionsMar 2011 – Jun 2013
Software Engineer
  • Developed an internal cloud server management system, optimizing server usage and reducing infrastructure costs.
  • Integrated with third-party cloud providers (Amazon, Opsource). Tech: Java, Spring, Hibernate, MySQL, Bootstrap, jQuery.

Open Source

edge-ai-kit
Flutter / Dart
The missing UI toolkit for on-device LLMs in Flutter. Provides device checks, model management, recommendations, and chat/vision/tool-calling widgets.
Specmatic Sample Generator Skill
Kotlin
Contributed to an AI skill that generates API sample requests/responses from OpenAPI specs for Specmatic, enabling contract-driven testing workflows.

Education

Tilak Maharashtra VidyapeethBachelor of Computer Application (BCA) · Completed 2009

Technical Skills

AI-Assisted DevelopmentBuilding with and leveraging agentic AI tools across the full delivery lifecycle.
Custom AI Agents
Claude Code
Kiro CLI
GitHub Copilot
Context Engineering
Antigravity
MCP
Prompt Engineering
Backend & Architecture14 years of experience designing and building scalable distributed systems.
Java
Kotlin
Spring Boot
Microservices
Event-Driven Architecture
Kafka
SAGA Pattern
System Design
PostgreSQL
MySQL
Cloud & DevOpsDeploying and managing infrastructure in the cloud.
AWS
Docker
Jenkins
Git
FrontendBuilding modern web applications when needed.
React
Next.js
Node.js
OtherTools and platforms for automation and chatbot services.
n8n
Razorpay Integration