Sanjay Mansel

Sanjay Mansel

AI-Augmented Full-Stack Engineer

Transforming ideas intoelegant solutions

Full-stack engineer and Tech Lead with 13+ years building and scaling product teams. Leading AI-native delivery with agentic coding tools and spec-driven workflows, end-to-end from architecture to production.

13+
Years Experience
65%
Faster Delivery
8→5
Team Efficiency

Skills & Expertise

Full-stack capabilities with deep frontend expertise

React.js

Next.js

TypeScript

JavaScript

Node.js

Tailwind CSS

Redux

PostgreSQL

MongoDB

AWS

Vercel

HTML5 / CSS3

AI-Native

Claude Code

Primary agentic coding tool

Cursor

AI-native IDE for daily development

Spec-Driven Dev

Markdown specs as living PRDs for humans + agents

Context Engineering

Architecture briefs & ADRs that keep agents aligned

Leadership & Management

Technical Leadership

Owning architecture end-to-end

Team Management

Leading an 8-engineer team

Mentorship

Developing junior & senior talent

Code Reviews

Ensuring quality standards

Experience

13+ years across global companies

Current Role

Tech Lead

Kumarans
Dec 2024 – Present
Chennai, India
8Team Size
4-mo PWAImpact
  • Led an 8-engineer team delivering a customer-facing insurance PWA from greenfield to production in 4 months
  • Drove the shift to AI-native delivery — agentic coding tools and Markdown specs as living PRDs — cutting feature cycle time by 65%
  • Enabled the team to ramp from 8 to 5 engineers without slowing delivery
  • Own the full stack: React/TypeScript frontend, Node.js backend, offline-first PWA with service workers, auth, and CI/CD

Senior Frontend Engineer

Revcomm Inc.
Jul 2023 – Nov 2024
Tokyo, Japan
4Team Size
<1s LoadImpact
  • Built <1s CSV processing for 30K+ rows
  • Led team of 4 developers with reliable releases

Tech Lead

State Street
Sep 2019 – Nov 2022
Bengaluru, India
6 ProjectsImpact
  • Developed React framework adopted by 6 projects
  • Guided multiple teams on best practices

Senior Software Engineer

HCL Technologies
Jan 2017 – Aug 2019
Bengaluru, India
5Team Size
$1M SavedImpact
  • $1M annual cost savings through admin portal optimization during EOY peak season
  • Designed a single-click Excel-to-application migration tool, saving 20 person-hours per cycle
  • Led a team of 5 and volunteered in company mentorship programs
  • Owned the POC for upgrading ExtJS pages to AngularJS / React

Senior Software Engineer

Walking Tree Consulting
Jan 2016 – Dec 2016
Hyderabad, India
UI UpgradeImpact
  • Built custom components with ExtJS (Sencha Touch); architected the UI upgrade for a risk management engine
  • Maintained coding standards through code reviews; cultivated a quality-over-quantity culture

Software Engineer

Tata Consultancy Services
Dec 2012 – Dec 2015
Bengaluru, India
  • Interfaced directly with clients to gather requirements and design user-centric web applications
  • Built web pages with Spring MVC; led HTML-to-ExtJS platform upgrades and integration testing

Let's Work Together

Have a project in mind or want to discuss opportunities? I'd love to hear from you.

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