Jack & Jill
Mobile Application Engineer (+ Equity) at Seamflow
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This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers.
She will pick the best candidates from Jack's network.
The next step is to speak to Jack.
Job Title
Mobile Application Engineer
Salary
Not Disclosed + Equity
Company Description
Seamflow.com is a London-based startup that raised an oversubscribed $4.5M seed round from Tier-1 investors like Coinbase, Reddit, Klarna, and Spotify to modernize manual systems in aerospace, healthcare, and energy.
Job Description
You will design and build end-to-end mobile workflows that translate complex real-world processes into intuitive software. Embedded with customers in the field, you’ll ship production-grade React Native apps featuring offline-first capabilities and AI integrations. This high-ownership role involves moving from customer calls to deployment, solving critical bottlenecks in physical industries.
Location
London, UK
Why this role is remarkable
- Join a world-class team featuring former unicorn founding engineers and talent from X, Google, Amazon, and Yandex in a high-trust, high-autonomy environment.
- The company is backed by an oversubscribed $4.5M seed round from legendary investors including Coinbase, Reddit, Klarna, and Spotify, providing a strong runway for growth.
- Experience true ownership by embedding with users in industries like aerospace and healthcare to build mobile-first tools that let physical-world work move at software speed.
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What You Will Do
- Ship production-grade features from day one, owning the entire lifecycle from initial customer specification and UX polish to final deployment.
- Develop sophisticated offline-first mobile workflows using React Native and TypeScript, integrating native Swift/Kotlin modules for camera and sensors when necessary.
- Integrate advanced AI-powered features, including LLMs and agents, directly into mobile workflows to streamline messy real-world field processes for industrial workers.
The ideal candidate
- Proven experience shipping cross-platform apps with React Native and TypeScript, with the technical depth to drop into native iOS and Android codebases.
- Strong background in building offline-first applications that manage local persistence, conflict resolution, and reliable data synchronization in environments with unreliable connectivity.
- Entrepreneurial mindset, ideally with early-stage or founder experience, and a willingness to work directly with non-technical domain experts to define product requirements.
Who are Jack & Jill?
Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
Get help with your application
Your very own career expert that helps elevate your application to the next level.
And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
How does this work?
- Jack's an AI agent for job searching and career coaching. He works for you.
- Jill is the AI recruiter working for the company. She recruits from Jack's network.
- If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.
We never post fake jobs
This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.
Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.
We appreciate this can make them look a bit suspect, but there isn't much we can do about it.
Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.
“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”
Jessica, London
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