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- Tasks: Design and build user workflows from UI to backend, integrating AI features.
- Company: Stealth startup backed by top-tier VCs, focused on transforming industries.
- Benefits: Visa sponsorship, relocation support, meals, and tools covered.
- Why this job: Join a high-impact team and ship real products from day one.
- Qualifications: Strong TypeScript and React skills, backend experience in Python, AI integration.
- Other info: Dynamic environment with opportunities for rapid growth and ownership.
The predicted salary is between 36000 - 60000 £ per year.
We’re removing one of the last great barriers to progress in the physical world. While software moves fast, industries like aerospace, healthcare, and energy are still slowed by outdated, manual systems. We are rapidly growing in stealth with 6-figure revenue, backed by a 14× oversubscribed $4.5m seed round from Tier-1 VCs such as Coinbase, Reddit, Klarna, and Spotify. Our world-class team includes former unicorn founding engineers and talent from X, Google, Amazon, and Yandex. We value people who want to win and thrive in high-ownership environments. We’re building the system that lets complex, real-world work move at software speed.
We’re looking for a Fullstack Engineer who thinks in user workflows, not tickets or isolated features. This is a role for someone who wants to decide what should exist, build it end-to-end, and put it in users’ hands. You will fit right in if you have experience with:
- Product Engineering — Design and build end-to-end user workflows, from UI to backend logic and data
- User Experience — Translate complex real-world processes into clear, intuitive interfaces
- Frontend — Build production-grade UI using modern frontend frameworks (React, TypeScript)
- Backend — Implement APIs, business logic, and data models that support complex workflows
- AI Integration — Design and integrate AI-powered features (LLMs, agents, model-backed APIs) into user workflows
- Product Judgment — Be opinionated about what to build, what not to build, and when to ship
- Ownership — Build fast and ship production-grade systems with high ownership
What You Will Do:
- Ship from Day 1 — Deploy to production immediately and own real product surface area
- Own it end-to-end — Create specs, figure things out, and build features end-to-end
- Solve real problems — From UX polish to backend logic to jumping on customer calls
What we are looking for Technically:
- Strong experience with TypeScript and modern frontend frameworks (React or equivalent)
- Comfortable building backend services in Python
- Experience integrating AI systems (LLMs, agents, model-backed APIs) into production products
- Ability to reason about complex workflows, not just CRUD
Strong plus if you have:
- Founder or ex-founder experience
- Early-stage or stealth startup background
- Founder fellowships or similar environments (EF, YC, Antler, etc.)
- Experience building AI-powered products in production
- Experience working where requirements were unclear and evolving
Your First Month:
- Ship to production from day one
- Own problems end-to-end, from definition to deployment
- Do what needs doing, including UX polish, debugging, and customer interaction
We Offer:
- Pace and purpose — In-person in London (visa sponsorship available)
- No friction — Relocation, visas, meals, and tools fully covered
- A tight-knit team — High standards, high trust, no politics
Founding Product Engineer employer: Seamflow
Contact Detail:
Seamflow Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Founding Product Engineer
✨Tip Number 1
Network like a pro! Reach out to people in your industry on LinkedIn or at meetups. We all know that sometimes it’s not just what you know, but who you know that can help you land that dream job.
✨Tip Number 2
Show off your skills! Create a portfolio or GitHub repository showcasing your projects and contributions. This is your chance to demonstrate your product engineering prowess and make a lasting impression.
✨Tip Number 3
Prepare for interviews by practising common questions and scenarios related to product engineering. We recommend doing mock interviews with friends or using online platforms to get comfortable with the process.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, we love seeing candidates who are proactive about their job search!
We think you need these skills to ace Founding Product Engineer
Some tips for your application 🫡
Show Your Passion: When writing your application, let your enthusiasm for the role shine through. We want to see that you’re genuinely excited about building end-to-end user workflows and solving real problems. A little passion goes a long way!
Tailor Your Experience: Make sure to highlight your relevant experience with TypeScript, React, and backend services in Python. We’re looking for someone who can integrate AI systems into production products, so don’t forget to mention any related projects or achievements.
Be Clear and Concise: Keep your application straightforward and to the point. We appreciate clarity, so avoid jargon and focus on what makes you a great fit for the role. Remember, we want to understand your thought process and how you approach complex workflows.
Apply Through Our Website: Don’t forget to submit your application through our website! It’s the best way for us to receive your details and ensures you’re considered for the role. We can’t wait to see what you bring to the table!
How to prepare for a job interview at Seamflow
✨Understand the Product Engineering Mindset
Before your interview, dive deep into what product engineering means in the context of user workflows. Be ready to discuss how you can design and build end-to-end solutions that enhance user experience, not just isolated features.
✨Showcase Your Technical Skills
Prepare to demonstrate your proficiency in TypeScript and modern frontend frameworks like React. Bring examples of your past work where you've built production-grade UI and backend services in Python, especially if they involved AI integration.
✨Emphasise Ownership and Problem-Solving
Highlight your ability to take ownership of projects from start to finish. Share specific instances where you've tackled complex problems, whether through UX improvements or backend logic, and how you’ve interacted with customers to refine those solutions.
✨Be Ready for Dynamic Discussions
Expect questions about evolving requirements and how you adapt to them. Prepare to discuss your experiences in early-stage startups or environments where ambiguity was common, showcasing your flexibility and innovative thinking.
