Mobile Developer

Ditto; Rotterdam; Hybrid; EUR 60,000 - 80,000; Full time

Benefits offered by this job

Competitive salary and equity options

Flexible hybrid work arrangements

Learning opportunities across the full stack

Direct collaboration with founders and senior leadership

Pokemon merch

Job summary

A tech-driven healthcare company in Rotterdam is seeking a Senior Mobile Developer to take ownership of mobile applications across iOS and Android. The ideal candidate has a proven track record in mobile engineering, expertise in native development, and experience with agentic engineering practices. The role offers a competitive salary, equity options, and the chance to work in a fast-paced environment that values collaboration and innovation. This position supports hybrid work arrangements.

Qualifications

• Proven track record as a Senior Mobile Engineer or equivalent.
• Demonstrated agentic engineering practice.

Responsibilities

• Take full ownership of Ditto's mobile applications across iOS and Android.
• Leverage agentic engineering workflows to ship at startup speed.
• Ensure secure-by-default in handling sensitive patient data.

Skills

Expertise in native iOS development

Expertise in native Android development

Strong software architecture fundamentals

Agentic engineering practice

Cross-platform tooling

Team collaboration

Job description

Overview

Ditto is on a mission to revolutionize care by providing people the right info, in the right format, at the right time. We aim to bring convenience to care and place you and your loved ones at the heart of the care experience.

Why

Imagine your grandmother always bringing one of her children to the hospital, since she does not fully grasp what has been said. Let alone recall what is going on when she comes home. Healthcare systems are designed for the providers, and leave people feeling passive and ill-understood. We think this should be different by putting you and your loved ones at the heart of care. That ambition is universal and global.

What

With Ditto, 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 lets you keep track of your own healthcare, invite loved ones to follow your care journey, and vice versa. In short: we want to build the Polarsteps for Health.

Who

A young yet turbo ambitious and experienced team, with little patience for the status quo. We are driven by a shared mission and excited about building fast and purposefully. Days after launch, we reached #1 healthcare app in the Netherlands and received coverage by multiple newspapers. We are shaping the team to build this into a European solution. Want to help us build this?

Who You Are

You're an engineer with deep mobile fundamentals (concurrency, memory management, platform APIs, architecture) who has discovered that agentic engineering is a powerful multiplier. You don’t just use AI tools; you orchestrate them. You design multi-step agent workflows, know when to trust agent output and when to intervene, and understand that the real skill is maintaining quality, security, and architectural coherence at the speed agents enable. At Ditto, agentic engineering is 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.

But AI agents don’t make you a unicorn mobile dev. Before the big AI-bang, you already have 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. You’re a continuous partner with designers. If Claude goes down tomorrow, you still ship. Above all, you are a fanatic team player driven by Ditto’s mission: making healthcare understandable for hundreds of thousands of patients.

Key Responsibilities

• Take full ownership of Ditto’s 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.

Secure by Design

• 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.

Product Collaboration

• 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.

Required Qualifications

• 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.

Preferred Qualifications

• Startup experience, owning 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.

Package & What We Offer

• All is up for debate, pending your experience. You help shape the culture and will share in any success of the company via equity.
• Mission-driven work: build something that genuinely makes healthcare more accessible for millions.
• Competitive salary and equity options.
• Close-knit team that cares about you.
• 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.
• Pokemon merch.

Apply for the job

If you want to join our team as our new Senior Mobile Developer, we’d love to hear about you.