JDeen

Available for contract work

“Build, baby,
build.”

Independent Software Engineer

I'm Ziyan Junaideen. I design and build web platforms, payment systems and mobile apps for clients, and I build and run products of my own. 14 years in, with AI in the loop, and I still write code every day.

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~/jdeen
$ jdeen status
based
Colombo, Sri Lanka
overlap
UK full day · US East most of it
stack
Elixir · Phoenix · Rails · Expo
shipping
14 years
payments
9 years
products
4 of my own
status
● open for new work
$
For hire

What I build for you

I take on contract work directly: one engineer from first call to production, working with your team or as your team.

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architecture

Custom software

Web platforms, internal tools and customer portals, from the first sketch to production and the upkeep after.

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bolt

Elixir & Phoenix

LiveView apps, background pipelines and JSON APIs. My main stack, and the one this site runs on.

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code

Ruby on Rails

New features on existing apps, upgrades across major versions, and rescues for apps that have fallen behind.

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payments

Payments

Gateways, card and ACH processing, tokenization and compliance built into the product rather than bolted on.

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Builder

What I'm building

Between client projects I build and run products of my own. Designed, built and run single-handed on Elixir/Phoenix, PostgreSQL and React Native (Expo), released through GitHub Actions to a server provisioned with Ansible.

  1. Chimes ChMS

    In development

    Congregation management system that churches license and run themselves instead of paying a subscription: membership, giving, attendance, Sunday school, communications and a member mobile app with push notifications.

    chimes.jdeen.com arrow_outward

  2. FindLove

    Live

    Dating and matrimony platform for Sri Lanka, on the web and as an iOS and Android app, with location-aware discovery on PostGIS and subscription entitlements.

    findlove.lk arrow_outward

  3. InMemory

    Live

    Obituary and memorial platform for Sri Lankans at home and abroad: family-managed notices, a vendor portal, identity verification and a mobile app.

    inmemory.lk arrow_outward

  4. The Roll

    Live

    Directory of Attorneys-at-Law, law firms and chambers across Sri Lanka, searchable by district, practice area, service and language, with firm vacancies and an iOS and Android app.

    theroll.lk arrow_outward
auto_awesome Why the tagline

Typing got cheap. Building well didn't.

Models now write a good share of the code, which makes “build, baby, build” truer, not less true. When the typing is cheap, the work is deciding what to build and building it so it lasts.

I still love to code. Some days that means Neovim and nothing but the LSP; others, parallel AI threads across several projects, prompted by voice. I lead, the models each have a role, and the discipline stays the same.

My approach to AI arrow_forward

Got something to build?

Tell me what you're making. I work until 2:00 AM Sri Lanka time (UTC+5:30), which covers the full UK business day and most of the US Eastern one.

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Recent Insights

Notes on building software, payments and working with AI.

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