ControlCheck
A privacy-first browser gamepad tester with live input visualization, diagnostics, controller health checks, and shareable local reports.
- Next.js
- TypeScript
- Gamepad API
- IndexedDB
Plate I · A Paper Portfolio
Nikhil Nelson
Senior Software Engineer building reliable products and practical tools.
Follow the riverMove to look around · click the fox · tap the sky for leavesDrag to look around · tap the fox
Plate II · About
Reliable software, carefully cut
I’m a senior software engineer with 5+ years of experience building scalable products with Ruby on Rails and React. I focus on payments, subscriptions, analytics, third-party integrations, and owning features from design through monitoring and iteration.
- 5+years engineering
- 4live products
Plate III · The Journey
Where the river has run
Follow it downstream: the company I build with, the client platforms I’ve worked on, and where it all started.
Work Experience
· Kochi, Kerala
QBurst Technologies
Senior Software Engineer
Design and maintain scalable Rails APIs for high-traffic SaaS products. I’ve led improvements across subscription renewals, payment integrations, analytics, notifications, automated testing, and third-party client services while collaborating directly with clients.
Key Contributions
TuneCore
Software Engineer
Work on payment and renewal flows using Adyen, PayPal, PayU, and Braintree; real-time tax automation with Avalara; payment analytics with Amplitude; and customer notifications through Iterable.
Lucet Healthcare Development Factory
Software Engineer
Built and improved Rails services for a healthcare platform, worked with large datasets, integrated third-party clients, resolved product issues, and stabilized legacy flows through refactoring and stronger automated test coverage.
Education
NSS College of Engineering, Akathethara
B.Tech in Computer Science and Engineering
Bachelor of Technology focused on computer science and software engineering.
Plate IV · The Workshop
Small tools, cut by hand
Focused products I’ve designed and built for practical, real-world workflows — each one hung up to dry.
StitchCalc
A focused collection of craft calculators for crochet, knitting, quilting, embroidery, and other maker workflows.
- Next.js
- TypeScript
- Tailwind CSS
- Static Export
HabitatCalc
Practical habitat and enclosure calculators that help keepers plan dimensions, capacity, heating, substrate, and project requirements.
- Next.js
- TypeScript
- Local Storage
- Static Export
BookPrint Tools
Production calculators and visual tools for book dimensions, cover layouts, spine widths, print costs, and export-ready publishing plans.
- Next.js
- TypeScript
- SVG
- PDF Export
Plate V · The Toolbox
Leaves from the toolbox
The languages, platforms, payment rails and AI tools I reach for most.
- Ruby on Rails
- React
- JavaScript
- TypeScript
- GraphQL
- SQL
- AWS
- RSpec
- Adyen
- Braintree
- PayPal
- PayU
- Amplitude
- Iterable
- Cursor
- Claude
- ChatGPT
- Gemini
Plate VI · Send a Letter
Leave a note by the burrow
Dear visitor,
Want to chat about software, products, or an interesting problem? Send me a letter and I'll write back.
Say hello— Nikhil
Cut by hand in Kochi · © 2026 Nikhil Nelson