#337 senior mobile engineer (ENG, R’dam)

#337 Senior Mobile Engineer – Hattrack recruiting headhunting

a company on a mission to revolutionize information around care by providing people the right info, in the right format, at the right time.

Imagine your grandmother always bringing one of her children to the hospital, since she does not fully grasp what has been said. Let alone is she able to recall what’s going on when she comes home. Or going through ten different apps and hospital portals to stitch together your medical history, in Latin. Healthcare systems are designed for the providers, and leave people feeling passive and ill-understood.

our technology allows everyone to capture, explain, and share meaningful interactions about health. Today, that is an AI-powered app that clarifies any healthcare encounter and document. Soon, we grow towards a platform that allows you to keep track of your own healthcare, invite loved ones to follow your care journey, and vice versa. In short: Polarsteps for Health.

A young yet turbo ambitious and experienced team, with little patience for the status quo. We’re driven by a shared mission and excited about building fast and purposefully. Days after launch, we reached #1 healthcare app in the Netherlands and got covered by 15 newspapers.

This was nice validation, but mostly proof that what we’re trying to achieve matters to many and the problems are universal. And we are now shaping the team to build this into a European solution.

You’re an engineer with deep mobile fundamentals (concurrency, memory management, platform APIs, architecture) who has discovered that agentic engineering is the biggest force multiplier since the creation of high-level languages. You don’t just use AI tools; you orchestrate them. You design multi-step agent workflows, you know when to trust agent output and when to intervene, and you understand that the real skill isn’t generating code, it’s maintaining quality, security, and architectural coherence at the speed agents enable. In our way-of-work agentic engineering isn’t a nice-to-have, it’s how we build. You’re actively pushing the boundaries of what’s possible, not because it’s trendy, but because you’ve seen what happens when strong fundamentals meet AI-native workflows: exceptional software, shipped fast, without cutting corners.

But AI agents don’t make you a unicorn mobile dev. Before the big AI-bang, you already built extensive experience, ideally cross-platform. You know the ins and outs of SwiftUI and Kotlin. You pixel-peep when needed, and you’re assertive in suggesting improvements on designs and flows. Hand-over from design is outdated, you are an active and continuous partner with designers. If Claude goes down tomorrow, you still ship.

Above all, you are a fanatic team player driven by our mission: making healthcare understandable for hundreds of thousands of patients. We are mission-first, and that should resonate deeply. You feel impatient about getting closer to that mission.

Take full ownership of our mobile applications across iOS and Android.

Leverage agentic engineering workflows to ship at startup speed while maintaining production-grade quality . The hard part isn’t going fast, it’s going fast without accumulating debt.

Design tangible, practical solutions. Push back when our bold ambitions are technically harder than we naively think.

Ensure secure-by-default from day one. In a healthcare context handling sensitive patient data, this is non-negotiable.

Apply security best practices in every line ,  whether you wrote it or an agent did.

Conduct regular vulnerability assessments to identify and mitigate risks proactively.

Understand the business need behind every change.

Work closely with product to translate requirements into robust technical solutions.

Ensure flexible architecture that can survive significant pivots.

Proven track record as a Senior Mobile Engineer or equivalent.

Expertise in native iOS and Android development and cross-platform tooling.

Strong software architecture and system design fundamentals .  This is the foundation everything else is built on.

Demonstrated agentic engineering practice (e.g. Claude Code, Cursor, multi-agent systems). We don’t mean “I’ve used Copilot autocomplete.” We mean: you’ve integrated AI agents into how you design, build, review, and ship software.

We work hybrid. You want to work in our awesome Rotterdam office 3+ days a week, with the flexibility to work remotely the rest. As a start-up, today we cannot yet sponsor visas.

Startup experience , You know what it means to own a problem end to end with limited resources.

Familiarity with the Dutch healthcare system or experience in regulated industries.

Contributions to open-source projects or public technical writing.

You know the drill. All is up for debate, pending your experience. You help shape the culture (e.g. fair use of holiday), and will share in any success of the company via equity.

Mission-driven work: build something that genuinely makes healthcare more accessible for millions.

Work with the latest in AI and healthcare technology.

Direct collaboration with founders and senior leadership.

A fast-paced environment where your contributions directly shape the product.

Learning opportunities across the full stack of modern software development.

Flexible hybrid work arrangements with a preference for in-person collaboration.

A team that values speed, pragmatism, and getting things done.

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