Engineering Lead
ArunKumar
Kandasamy
Engineering Lead • ThinkPro Ventures
Building Scalable Products.
Leading AI-Augmented Engineering.
Delivering Predictable Outcomes.
Engineering Lead with 16+ years of experience building scalable platforms, cloud-native systems, and AI-augmented engineering practices. I combine deep technical expertise with delivery leadership to build predictable, high-performing products.
01.
About
Professional summary: Chennai-based Engineering Lead and independent technical consultant with 16+ years delivering Ruby on Rails, React, and cloud platforms — from architecture and hands-on engineering to predictable release governance.
My Philosophy:
"Good architecture, to me, is a promise kept to the future. That shows up in how I work: design first, APIs and domains that age well, and delivery systems that work just as reliably on Mondays as they do on release day."
What defines my work:
- Performance as a feature — profiling, indexing, smart caching, and DB tuning that regularly deliver 30%+ latency improvements
- Operational truth — APM dashboards, clean logs, and alerts that actually help at 2 a.m.
- Clarity over chaos — short written decision records and sprint plans that align product, QA, and engineering
- Change without drama — zero-downtime Rails & Postgres upgrades, legacy modernisation, monolith split-outs, and container moves
AI-Augmented Engineering Practices
- •AI-assisted software engineering: Implemented practices across Ruby on Rails application development and DevOps workflows by leveraging Claude, Cursor IDE, and LLM-based coding assistants for architecture design, code generation, refactoring, test automation, and technical documentation.
- •Dockerized CI/CD automation: Integrated AI capabilities into Dockerized environments and GitHub Actions to optimize CI/CD pipelines, automate code quality checks, security scanning, release validations, and deployment processes — significantly improving development velocity, deployment reliability, and operational efficiency.
- •Prompt engineering & AI code review: Established prompt-engineering and AI code-review guidelines to maintain consistency, security, and quality standards across AI-assisted contributions to production Rails services.
Technical Skills:
Ruby
Ruby on Rails (v3.0-v7.2+)
React / Next.js
Angular
PostgreSQL
MySQL
MongoDB
AWS / Heroku / Linode
Docker
REST API / GraphQL
Sidekiq / Delayed Job
ActionCable / Turbo Streams
ActiveMQ / RabbitMQ / Kafka
JavaScript / jQuery
TailwindCSS / Sass
RSpec / Cucumber
Git / GitHub Actions
Jenkins / CircleCI
Redis / ElasticSearch
C / C++
AI & Automation Tools:
Claude
Cursor IDE
LLM-based coding Assistants
Leadership & Management:
Solutions Architecture (HLD/LLD)
Technical Leadership
Agile/Scrum Delivery
Stakeholder Management
Release Governance
Risk/Issue Management
Performance Engineering
Jira / Confluence / ClickUp
Education:
B.Tech, Electrical and Electronics Engineering
Bharath University, Chennai (2005-2009)
02.
Areas of Impact
- -Ruby on Rails (v3 → v7.2), REST & GraphQL APIs, RBAC
- -React / Next.js / Angular, Tailwind CSS
- -PostgreSQL, MySQL, MongoDB, Redis
- -Sidekiq, Kafka, ActiveMQ
- -AWS, Heroku, Linode
- -Docker, GitHub Actions, Jenkins, CircleCI
Strategic Wins
- -Cut p95 latency by ~32% and reduced slow queries by 45% across enterprise platforms
- -Rebuilt CI/CD pipelines to shrink build times by 35% and double deployment frequency
- -Ran multi-version Rails upgrades for large teams without a single rollback
- -Modernised a legacy HR platform, doubling deploy speed and trimming cloud spend by 20%
- -Built hybrid data sync (on-prem Tally → cloud) processing millions of financial rows daily
- -Techi.news: Rails + Next.js platform with 91% cache hits and 52% lower TTFB
03.
Experience
Engineering Lead @ ThinkPro Ventures
Jan 2024 - Present- -Lead engineering direction at ThinkPro, owning solutions architecture (HLD/LLD), execution planning, and end-to-end delivery across internal and client engagements.
- -Architected and built Techi.news, a technology news publication platform (recently launched) with a scalable publishing workflow for curated news, blogs, and thought leadership content.
- -Designed the platform using Ruby on Rails (CMS/backend) and a modern Next.js + TailwindCSS UI, enabling separation between content operations and frontend delivery.
- -Built API-driven modules for content lifecycle (create/edit/publish), listing/filtering patterns, and SEO-friendly show page rendering for content-heavy traffic.
- -Implemented performance practices including caching and revalidation mechanisms, database access optimization, and improvements for high-read pages (index/show), improving p95 response time by 41% on key endpoints.
- -Owned DevOps and delivery pipelines using Docker-based environments, CI/CD (Jenkins/GitHub Actions), release checklists, and release automation for predictable deployments.
- -Led delivery communication and execution tracking: milestones, risk/issue management, production readiness, and post-release validation.
- -Drove operational stability including environment configuration, build reliability, monitoring/alerting setup, and production troubleshooting.
- -Consulted for Cornerstone OnDemand and Effortless FinLabs, leading legacy application modernization to the latest technology ecosystem and driving measurable performance improvements.
- -Mentored engineers and enforced standards through code reviews, architecture guidance, and delivery discipline.
Technical Lead @ CAI Info India Pvt. Ltd.
Feb 2020 - Mar 2023- -Worked as Technical Lead within a senior engineering team, collaborating with developers, leads, product stakeholders, and architects to deliver business-critical enterprise platforms.
- -Contributed hands-on to backend engineering using Ruby on Rails, developing core modules and REST APIs.
Senior Software Engineer @ ZiniosEdge Information Technologies
Apr 2018 - Jan 2020- -Developed and scaled a large CRM platform using Ruby on Rails, delivering new modules across customer lifecycle, workflow automation, and reporting.
- -Built and maintained REST APIs with clean architecture and maintainable service boundaries.
Senior Software Engineer (Remote) @ Aspire Software Consultancy
Nov 2016 - Jan 2018- -Collaborated with UK-based B2B marketplace team (Rightboat) as a remote engineer.
- -Owned full lifecycle delivery of product enhancements using Ruby on Rails, from requirement discussions to release support.
Co-founder & CTO @ Code Rabbits Technologies
Dec 2013 - Oct 2016- -Founded and led engineering execution for eCommerce web/mobile solutions and an internal SaaS eCommerce platform.
- -Designed platform architecture using Ruby on Rails, building modular components for catalog, cart, checkout, orders, and customer workflows.
Senior Software Developer @ Mereo Technologies
Oct 2012 - Aug 2013- -Designed and developed multiple software projects following engineering standards and architectural guidelines.
- -Collaborated with cross-functional teams to define scope, requirements, and delivery timelines.
Software Developer @ Aubev Technologies
Dec 2010 - Sep 2012- -Designed, developed, tested, and maintained software solutions following established coding standards and best practices.
- -Debugged and resolved issues through root cause analysis, improving system stability and performance.
SEO Analyst @ Spoison Consulting
Oct 2009 - Nov 2010- -Executed SEO and web marketing strategies including on-page/off-page optimization, link building, keyword research, competitor analysis, and traffic monitoring.
- -Generated SEO performance reports and supported clients with web promotion and search visibility improvements.
04.
Projects
Mahindra Retail Campaign Platform
Technical Lead
- -High-Volume Campaign & Messaging Platform.
- -Designed high-throughput coupon lifecycle engine with state-machine-driven workflows.
Ruby on RailsMySQLRabbitMQSidekiqTwilio API+3 more
Independent consulting case studies with full delivery narratives are on the consulting engagements page.
05. Book a Conversation
Reserve a time to talk through your next build.
If you want to discuss architecture, Rails modernization, delivery strategy, or performance work, you can book a slot directly here without interrupting the existing contact options below.
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