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Naseebullah Ahmadi

Senior Software Engineer (Previously at IFX Payments)

Booked up for now, but do say hello
London, UK

I ship products that can't afford to break, mostly regulated, high-risk work in open banking and payments, and own them from the API contract to the details that make an interface feel considered. I like small teams, clear writing, and code that is boring in the places it should be.

Get in touch
building software
8+ yrs
Agencies and startups through to fintech platforms.
since 2017
products shipped
≈20+
Customer apps, internal tools, and design systems.
added here over time
teams mentored
3
Frontend and full-stack engineers, junior to mid-level.
still mentoring

Now

  • Writing about system design in plain language
  • Building small tools I actually use daily
  • Reading about distributed systems and typography

Toolkit

#react
#typescript
#postgres
#redis
#stripe
#mixpanel
#nextjs
#node
#chromatic
#claude-code

Career

Full career

  • Aug 26, 2025 — Aug 01, 2026

    Senior Software Engineer

    IFX Payments

    1 yr

    Building the infrastructure that moves money. Reliable payment systems, from the first API call to the final settlement.

    #payments
    #fintech
    #distributed-systems
    #typescript

  • Jan 13, 2025 — Aug 22, 2025

    Senior Software Engineer

    Argentex Group PLC

    8 mos

    Connecting complex currency workflows with simple, dependable APIs. Making cross-border financial operations feel a little more local.

    #fintech
    #api-design
    #payments

  • May 01, 2020 — Sep 01, 2024

    Fullstack Engineer

    Truelayer

    4 yrs 5 mos

    Turning open banking into everyday experiences. Working across the stack to connect financial data, payments, and the people using them.

    #open-banking
    #typescript
    #api-design
    #fullstack

Selected writing

More writing

Say hi 👋

Working on something ambitious, or stuck in a system that has outgrown itself? I read every email.

hello@itsnas.me