Senior full-stack engineer, web and mobile

Ainurhq; Netherlands; Remote; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Remote by default

EU-friendly

Job summary

Ainur is seeking a senior full-stack engineer to own one or two client products end to end: mobile app, web dashboard, API, and release cycle. You will work with React Native, Expo, Next.js/React, Go or Node, and PostgreSQL, shipping features from design to production with a small team.

You’ll talk with clients in weekly calls, review teammates’ work, and ensure quality, performance, and reliable releases. Remote by default; EU-based candidates welcome.

Qualifications

• 7+ years building production software with at least one product owned end to end.
• Senior in TypeScript, with React Native in production; Next.js or similar on web.
• Experience shipping to App Store and Google Play.
• Ability to discuss technical decisions with clients in English and document outcomes.
• Based in the Netherlands or elsewhere in the EU.
• Nice to have: Expo EAS, PostHog analytics, payments/subscriptions, Dutch language.

Responsibilities

• Own a product end to end: mobile app, web dashboard, API, and release.
• Talk to clients in weekly calls and decide how things get built; ship with minimal supervision.
• Review teammates' work and ensure quality, tests, and standards.
• Maintain live systems: error tracking, performance, and rapid fixes.
• Collaborate on code reviews, including AI-assisted code and testing standards.

Skills

TypeScript

React Native

Next.js

React

Go

Node.js

PostgreSQL

API design

Job description

Ainur is an engineering and research firm in the Netherlands. We build and run software for our clients, and we are looking for a senior full-stack engineer who owns a product end to end: the mobile app, the web dashboard behind it, the API under both, and the release that puts it in users' hands.

The role

Each client product has one engineer who owns it, with a designer, the founders and the rest of the team behind them. You are that engineer for one or two products. You talk to the client in the weekly call, decide how things get built, build most of it yourself, review what others add, and ship. Our stack: React Native and Expo on mobile, Next.js, React and SvelteKit on the web, Go and Node on the server, PostgreSQL underneath.

What you will work on

• Consumer and field apps on iOS and Android, with push notifications, deep links, a paid tier, and store releases you run yourself.
• Admin dashboards that let a client run their own content, users, pricing and reporting without calling us.
• GraphQL and REST APIs and the data models that outlive the first version: migrations, access control, analytics events, the boring parts done right.
• Keeping what is live healthy: error tracking, performance, the fix that ships the same day.
• Code review, including code written with AI tools, and the tests and standards that let a small team move fast.

What we are looking for

• Seven or more years building software for production, and at least one product you owned end to end: design, build, release, run.
• Senior in TypeScript, with React Native in production a must and Next.js or another web framework next to it. On the server, Go or Node in production, with a relational database.
• You have shipped to the App Store and Google Play and dealt with what follows: review, crashes, versions in the wild.
• You can run a technical conversation with a client in English and write down what was decided.
• Based in the Netherlands, or elsewhere in the EU.
• Nice to have: Expo EAS, PostHog or similar analytics, payments and subscriptions, Dutch.

What we offer

• 32 to 40 hours a week. In the Netherlands, employed or freelance. Elsewhere in the EU, freelance.
• Pay in line with the market and your experience.
• Remote by default. In the Netherlands, on site with a client when it matters.
• Work that is yours end to end, a designer next to you, and founders who still write code.
• English is the working language. Dutch is welcome.