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Build for the hardest conditions, and everything else gets easy

We are in Nairobi on purpose. Building for intermittent networks, low-end devices and mobile money makes better engineers than building for office fibre ever will.

4 open roles

What it is actually like here

Not the recruiting version. This is what the week looks like.

  • Small teams, full ownership

    Three to five people per engagement, each owning a domain end to end. No handoffs between a team that designed it and a team that has to live with it.

  • Demos beat status reports

    Every two weeks you see working software, not a percentage. Progress you can click is the only progress we count.

  • Engineering time is protected

    Deep work blocks, asynchronous by default, and a meeting culture that has to justify itself. Good systems need uninterrupted thinking.

  • We build in this market on purpose

    Our team is in Nairobi because the constraints here produce better engineers. Building for intermittent networks and low-end devices makes everything else easy.

What comes with the job

  • Above-market pay

    Benchmarked annually against Nairobi and regional remote rates.

  • Hybrid by default

    Two days in the Westlands studio, the rest wherever you work best.

  • Learning budget

    KES 80,000 a year for courses, conferences and books, no approval theatre.

  • Real equipment

    A machine that can actually run your toolchain, plus a test device budget.

  • Medical cover

    Comprehensive inpatient and outpatient cover including dependants.

  • Protected deep work

    No-meeting mornings. Good systems need uninterrupted thinking.

  • Fortnightly demos

    You present your own work to the client. Credit goes where it is due.

  • Paid volunteering

    Five days a year for community tech work, including our schools programme.

Where we need people right now

If none of these fit but you think you should be here, write to us anyway. We have created roles for the right person before.

Senior Full-stack Engineer

Nairobi / HybridFull-timeEngineering

Open

Own the architecture and delivery of client platforms end to end - from the data model through to the interface people actually touch.

What you will do

  • Design and build production systems in Next.js, TypeScript and Node.js
  • Own technical decisions on one or two concurrent client engagements
  • Review code and mentor mid-level engineers
  • Sit in discovery sessions and translate business process into architecture
  • Keep systems observable, tested and documented for handover

What we need

  • 4+ years building production web applications
  • Strong TypeScript, React and Node.js
  • Comfortable designing relational schemas and writing efficient SQL
  • Experience taking a system from empty repository to live users
  • Able to explain a technical trade-off to a non-technical client

Nice to have

  • M-Pesa or payment gateway integration
  • AWS or Docker in production
  • Prior agency or consulting experience
Apply for this role

Mobile Engineer (Flutter)

Nairobi / HybridFull-timeEngineering

Open

Build apps that work on entry-level Android over unreliable networks - the constraint that makes this work interesting.

What you will do

  • Build and ship cross-platform apps in Flutter
  • Design offline-first data layers with reliable background sync
  • Optimise install size, cold start and performance on low-end devices
  • Manage Play Store and App Store releases
  • Instrument crash reporting and act on what it reports

What we need

  • 3+ years mobile development, 2+ in Flutter
  • Shipped at least two apps to production stores
  • Solid grasp of local persistence and sync conflict handling
  • Experience testing across a range of real Android devices

Nice to have

  • Native Android or iOS background
  • Firebase or Supabase
  • Payment SDK integration
Apply for this role

Product Designer

Nairobi / HybridFull-timeDesign

Open

Design interfaces and systems for products used by thousands of people daily, and stay involved while they get built.

What you will do

  • Run discovery, wireframing and high-fidelity design
  • Build and maintain tokenised design systems in Figma
  • Work directly with engineers through implementation
  • Present and defend design decisions to clients
  • Run usability testing and fold findings back into the work

What we need

  • 3+ years product or UI/UX design
  • A portfolio of shipped digital products, not concepts
  • Expert in Figma including components, variants and tokens
  • Understand what is cheap and expensive to build, and design accordingly

Nice to have

  • Motion design
  • Brand identity experience
  • Can read and write HTML/CSS
Apply for this role

Engineering Internship

Nairobi / On-siteInternshipEngineering

Open

A paid six-month programme for graduates and final-year students. Real client work, a named mentor, and a genuine route to a full-time offer.

What you will do

  • Contribute to live client projects under supervision
  • Pair with senior engineers on production code
  • Own small features end to end, including testing
  • Present your work at fortnightly team demos

What we need

  • Final-year student or recent graduate in a technical field
  • Working knowledge of JavaScript or Dart
  • A personal project or coursework you can walk us through
  • Available on-site in Nairobi for the full six months

Nice to have

  • Open-source contributions
  • A deployed side project
  • Any prior team-based development
Apply for this role

Delivery Manager

Nairobi / HybridFull-timeDelivery

Closed for now

Keep engagements on scope, on schedule and honestly communicated - the role clients remember when a project goes well.

What you will do

  • Own client relationships across three to four concurrent engagements
  • Run discovery workshops and write requirements documents
  • Manage scope, change requests and milestone sign-off
  • Chair fortnightly demos and keep clients ahead of any slippage

What we need

  • 3+ years project or delivery management in software
  • Technically literate enough to challenge an estimate
  • Excellent written communication
  • Comfortable delivering bad news early

Nice to have

  • Agency background
  • Formal PM certification
  • Technical or design background

Six steps, and we pay you for the hard one

No whiteboard puzzles, no unpaid take-home marathons, no ghosting. You hear back either way.

  1. 01

    Application

    CV plus one thing you built and can talk about. No cover letter required.

  2. 02

    Intro call

    30 minutes on your work and what you are looking for. Two-way.

  3. 03

    Technical conversation

    90 minutes reviewing your code or design work together. No whiteboard puzzles.

  4. 04

    Paid exercise

    A short, realistic task done in your own time and paid at our contractor rate.

  5. 05

    Team session

    Meet the people you would work with. They get a real say.

  6. 06

    Offer

    Within two working days of the final session, with the reasoning explained.

Nothing here fits, but you still want in?

Send us something you built and tell us what you would want to work on. Write to careers@trenax.co.ke — a person reads it.

Book a callWhatsApp ushello@trenax.co.ke

We reply within one business day.

Have a project in mind?

Free 30-minute discovery call.

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