At a Glance
- Tasks: Lead the development of a mobile-first fitness platform and make key architectural decisions.
- Company: Exciting early-stage healthtech startup focused on wellness.
- Benefits: Equity options, autonomy in tech choices, and a chance to shape a product from scratch.
- Other info: Join a mission-driven team with high growth potential and a strong founder.
- Why this job: Be the first engineer and make a real impact on health and fitness for underserved communities.
- Qualifications: 4-7 years of full-stack experience and proficiency in TypeScript and React Native.
The predicted salary is between 60000 - 80000 £ per year.
Join as the first engineer to build a mobile-first fitness platform from the ground up. You will own the entire technical stack, making key architectural decisions while shipping fast in an AI-assisted environment. Working closely with a notable founder and fractional CTO, you will transform early insights into a high-impact product.
Location: London, UK
Why this role is remarkable:
- Full ownership of a greenfield project with the autonomy to select the tech stack and shape the product architecture.
- High-growth potential with a recognizable founder and a strong distribution strategy already in place from day one.
- Mission-driven work focused on improving wellness for a significant, underserved demographic through an adaptive fitness platform.
What You Will Do:
- Lead the end-to-end development of a mobile-first consumer application using TypeScript and modern managed cloud services.
- Collaborate with founders to translate product vision into scalable technical features while maintaining high security and data standards.
- Implement AI-assisted development workflows to accelerate shipping cycles and maintain a high bar for product quality.
The ideal candidate:
- 4–7 years of full-stack experience with a proven track record of shipping consumer-facing mobile or web applications.
- Strong product instinct with the ability to communicate technical trade-offs clearly to non-technical team members.
- Proficiency in TypeScript and modern frameworks like React Native, with a preference for low-ego, early-stage ambiguity.
StudySmarter Expert Advice🤫
We think this is how you could land Founding Engineer (+ Equity) at early-stage consumer healthtech startup in London
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Jack & Jill or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Jack & Jill.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Jack & Jill.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Jack & Jill that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Founding Engineer (+ Equity) at early-stage consumer healthtech startup in London
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Jack & Jill.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Jack & Jill and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Jack & Jill
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Jack & Jill uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
