I build systems that cut cost and stay shipped.

1. 01

   Own product · Open source

   ShopFlare

   A self-hosted alternative to Shopify Basic: storefront, admin, Stripe checkout, cash-on-delivery and WhatsApp ordering, installable as a PWA. It runs on Cloudflare's free tier, so the hosting bill is nothing.

   2,084

   unit tests at 95% coverage, plus integration tests against real workerd and full end-to-end, accessibility and visual-regression suites. 22 architecture decision records. 657 commits.

   Role: sole author, architecture through deploy.
   Notable: deliberate two-Worker split. The SSR worker holds zero database bindings; a separate Hono API worker owns every binding and secret. That is a real trust boundary, and the cross-origin cookie problem it creates is solved with Bearer auth and written up in ADR-0014.

   • Next.js 16
   • React 19
   • TypeScript
   • Cloudflare Workers
   • Hono
   • Drizzle / D1
   • R2 + KV
   • Stripe
   • Vitest
   • Playwright

   

2. 02

   Multi-tenant SaaS · Private

   Gymplex

   Independent gyms need software, but each one wants its own subdomain, its own branding, and its own money. Gymplex is one Rails monolith serving all of them. Members book classes and pay, staff run check-ins and schedules, and the platform operator administers every gym from one place.

   One codebase, isolated tenants

   Tenant resolution happens in Rack middleware before the router: the subdomain maps to a gym, and every gym-owned model carries a default_scope bound to it. Cross-tenant leakage takes a deliberate, documented bypass, not an accident.

   Role: sole author: product, architecture, build.
   Notable: Stripe Connect with one Standard account per gym. Owners connect their own Stripe by OAuth and get paid directly; the platform takes a configurable application fee. Exactly three scope bypasses exist, each written down and defended: the platform operator, Stripe webhooks resolving tenant from event.account, and background jobs restoring tenant from a job argument.
   Scale: 303 commits over 5.5 weeks, 35 models, 28 migrations, 428 tests.

   • Rails 8.1
   • Ruby 4.0
   • PostgreSQL
   • Stripe Connect
   • Hotwire
   • Slim
   • Tailwind
   • Solid Queue
   • Minitest

   

3. 03

   Fleet management · Contract

   EasyForTrip

   A car rental and chauffeur operator was scheduling a 50+ vehicle fleet by hand and could not take money online. I architected an automated booking system and wired in a Stripe payment gateway, so the business could collect revenue on the web for the first time.

   60%

   less administrative overhead, and 15+ hours a week of manual scheduling gone. Checkout sits behind authentication, so the payment flow is not publicly verifiable. The booking platform itself is live.

   Role: architecture, build, deploy.
   Verified: Rails confirmed in response headers; Heroku behind Cloudflare.

   • Ruby on Rails
   • Stripe
   • PostgreSQL
   • Heroku
   • Cloudflare

   

4. 04

   SaaS · Contract

   Kleptofinder

   Artists and photographers had no practical way to find their work being used without permission, and checking by hand took days. I built a reverse image search platform on BingAI that does it while you wait. Two surfaces: a marketing site, and the authenticated app at app.kleptofinder.com, which is white-labelled per client subdomain.

   Days → seconds

   Detection time for unauthorised use of an artist's work.

   Role: full stack: Angular front end, C# Azure Functions backend, Python services, CI/CD.
   Verified: Angular confirmed from the app's build output. The C# / Python / Azure layer sits behind login, so it is not publicly inspectable.

   • Angular
   • C#
   • Azure Functions
   • Python
   • BingAI
   • CI/CD

   

5. 05

   eCommerce · Contract

   Craftfoxes

   A craft marketplace running on an ageing Rails stack. I shipped product listing, order management and Stripe payments, then led the Rails version upgrade that closed out security debt.

   Zero downtime

   On a framework upgrade for a live marketplace the client reports serves 5,000+ active sellers. Covered with RSpec before the cutover.

   Role: feature development and upgrade lead.
   Note: the seller count is the client's figure, not something published on the site.

   • Ruby on Rails
   • Stripe
   • RSpec
   • AWS
   • Passenger

   

6. 06

   Performance · Contract

   amitramanuj.com

   A game designer's portfolio was carrying a full WordPress install to serve pages that never changed, carrying the hosting bill, the update treadmill and the plugin attack surface that come with it. I rebuilt it as plain HTML on GitHub Pages.

   4.8×

   faster to first byte: 0.34s against 1.64s for the equivalent WordPress stack, three-run average. Hosting went to zero, and so did the plugin attack surface.

   Role: migration and rebuild.
   Verified: measured directly. server: GitHub.com, 86KB, 16 asset requests.

   • HTML
   • CSS
   • GitHub Pages
   • WordPress migration

   

7. 07

   Reference build · Open source

   Stripe subscriptions + PDF invoicing

   Two-tier subscription billing done properly, so I never have to solve it from scratch again: hosted Checkout and embedded Elements, webhooks, plan changes with correct proration, PDF invoices, and a read-only admin panel. Bilingual end to end.

   100%

   line coverage across 98 tests, measured by SimpleCov. Not a target, the actual recorded figure. Invoice tests assert extracted PDF text, not just that a file rendered.

   Role: sole author.
   Notable: plan changes proration correctly instead of stacking a second subscription, and the client-secret lookup walks Stripe's Basil API field rename with a fallback chain, so it survives an API version drift that breaks most tutorials. Devise runs two isolated scopes so an admin session can never become a user session.
   Honest framing: a reference build, not a product. Small on purpose.

   • Rails 8.1
   • Ruby 4.0
   • Pay + Stripe
   • HexaPDF
   • Devise + Pundit
   • ActiveAdmin
   • Hotwire
   • i18n en/fr
   • Minitest

   

All reviews on Upwork

1. Apr 2022 – present

   Independent Consultant

   Upwork, contract engagements

   • Architected fleet booking and Stripe payments for EasyForTrip, cutting administrative overhead 60% and removing 15+ hours of manual scheduling a week.
   • Built Kleptofinder, taking artwork theft detection from days to seconds on Angular, C# Azure Functions and BingAI.
   • Shipped listings, orders and Stripe into Craftfoxes, then led a Rails version upgrade with zero downtime.

2. Sep 2020 – Apr 2022

   Software Engineer

   Devsinc

   • Cut query latency 35% and server-side errors 20% across 3 production apps with Redis-backed ActiveRecord caching for GraphQL.
   • Moved deployments to Docker on AWS EC2 with automated CI/CD, shortening the release cycle across every client project.

3. Mar 2019 – Jul 2020

   Co-Founder & Technical Lead

   Takhleeq

   • Took the MVP from idea to launch, reaching 200+ early adopters at 99.9% uptime on AWS EC2, S3 and RDS.
   • Owned every technical decision, from stack selection to production deploy.

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Configs on GitHub