At a Glance
- Tasks: Own major mobile features in our Expo/React Native app from concept to production.
- Company: Join a dynamic team within Do Health, backed by Voy.
- Benefits: Enjoy autonomy, competitive salary, and the chance to make a real impact.
- Other info: Fast-paced environment with opportunities for personal and professional growth.
- Why this job: Shape the future of healthcare with innovative tech and proactive solutions.
- Qualifications: 5+ years in frontend engineering, strong in TypeScript, React Native, and Expo.
The predicted salary is between 60000 - 80000 £ per year.
Do Health is a mobile-first, preventative health product built by a small, autonomous team within Voy. We operate like an independent startup — modern stack, high trust, fast decision-making — with the backing and resources of an established company. Co-founded by Dr Rangan Chatterjee, our mission is simple but ambitious: shift healthcare from reactive treatment to proactive prevention.
You’ll join the core product engineering team responsible for building and scaling our Expo / React Native app. This is not a ticket-taking role. You’ll own major mobile features end-to-end, influence architecture and product direction, and help shape how thousands (and eventually millions) of people understand and improve their health over time. If you care about craft, autonomy, and building something meaningful — this is a rare chance to do all three.
What you’ll do:
- Own major mobile features end-to-end in our Expo / React Native app, from concept to production.
- Collaborate closely with product and design to shape UX, technical architecture and delivery strategy.
- Make product and engineering decisions, not just implement predefined specs.
- Drive improvements in app performance, reliability and maintainability as we scale.
- Architect scalable patterns for state management, API integration and offline-first experiences.
- Champion high engineering standards: testing, observability, code quality and thoughtful reviews.
- Use AI tools responsibly to accelerate development while maintaining quality and correctness.
- Ship high-quality features independently, with minimal oversight, in a fast-moving environment.
Who you are:
- 5+ years of frontend engineering experience with strong software fundamentals.
- Deeply experienced with TypeScript, React Native and Expo.
- Takes full ownership of projects and sees them through to measurable impact.
- Product-minded: cares about UX, user outcomes and craft — not just code.
- Comfortable operating in ambiguity and making sound technical judgement calls.
- Pragmatic and execution-focused — you ship, iterate and improve.
- Experienced in fast-moving consumer startups, scaleups or design-focused teams.
- Confident using AI tools thoughtfully — accelerating output without compromising engineering quality.
Senior Mobile Engineer - Do Health in London employer: Voy
At Voy, we pride ourselves on being an excellent employer that values innovation and community impact. Our dynamic work culture fosters collaboration and professional growth, offering employees opportunities to enhance their skills while making a meaningful difference in public health. With a hybrid working model and regular engagement in vibrant areas like Manchester and Sheffield, we provide a unique environment where you can thrive both personally and professionally.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Mobile Engineer - Do Health 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 Voy 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 Voy.
✨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 Voy.
✨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 Voy 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 Senior Mobile Engineer - Do Health 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 Voy.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Voy 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 Voy
✨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 Voy 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.
