Find a job 
Featured Companies 
Featured Universities 
For Companies At a Glance
- Tasks: Join our UK engineering team to drive product growth and enhance user experience.
- Company: Eucalyptus, a fast-growing digital healthcare company making a real impact on obesity management.
- Benefits: Flexible hybrid work, wellness allowance, personal development budget, and 25 days holiday.
- Why this job: Make a difference in patients' lives while working with passionate, talented individuals.
- Qualifications: Strong React, TypeScript, and Node.js skills with 3-5 years of relevant experience.
- Other info: Dynamic environment with opportunities for career growth and exciting challenges.
The predicted salary is between 43200 - 72000 £ per year.
About Euc
We’re making good health last a lifetime. More than 1 billion people globally live with obesity, a significant leading indicator of many preventable chronic diseases such as diabetes and heart disease. Eucalyptus is the company behind Juniper, one of the world’s largest weight management programs combining GLP-1 medication with a tailored nutrition and exercise programme, supported by our multidisciplinary care team of prescribers, health coaches, dietitians, nurses and pharmacists. Our published clinical research demonstrates that our combined approach to weight management and lifestyle change increases the likelihood of our patients losing significant weight during their treatment with Juniper by four times. Since launching, we’ve grown fast to support millions of patients.
In the last 12 months:
- We grew the size of our patient base by 10x in the UK.
- Received selective NICE endorsement for our holistic approach to obesity management.
- Grew our team from 50 to 200.
- Globally, we grew revenue by >120% YoY, while reducing cash burned by 90% YoY, with over $100M USD raised from global investors.
What’s next? In 2025, we are charting the path to support hundreds of thousands of patients while launching into new conditions, demographics, and geographies as we move towards our vision of creating a preventive healthcare ecosystem. We’re building the world’s largest international digital healthcare company. This will be highly challenging, very rewarding and the adventure of a lifetime, working with the best operators you will ever encounter. If that gets you excited, let’s talk!
About The Role (What You’ll Be Doing)
This role will join our first UK-specific engineering team, focused on unlocking product growth through locally prioritised engineering initiatives. While our broader engineering team in Australia leads core architecture and feature development, this team is responsible for experimenting, extending, and refining the platform to accelerate UK market growth. It’s not about quick wins or shallow growth hacks — this is foundational work grounded in data and product insight, aimed at driving meaningful, sustained outcomes.
- Run structured, data-informed experiments to improve the UK market’s conversion funnel.
- Extend the core platform to better serve UK-specific customer journeys.
- Prioritise initiatives that create real business impact, not just vanity metrics.
About You (Who You Are)
Strong React & TypeScript experience and proficiency in Node.js with GraphQL. Experience working in highly iterative, data-driven teams. Understanding of conversion funnel optimisation in a digital product. At least 3-5 years of experience in a similar role at other startups or software companies under your belt. Experience building web products with our tech stack. Proven record of successfully breaking down projects, estimate timelines and consistently delivering high-quality work. Excellent written and verbal communication skills. You are curious about how things work and have innate ability to problem solve – this is crucial as you won’t always have the information you need to move forward.
Nice to haves:
Exposure to Go. Familiarity with data visualisation tools like Metabase or Tableau. Experience in growth-focused roles at startups.
So, why join Eucalyptus?
Make real impact, fast - We build in the open together, which helps us learn and iterate more quickly to deliver high-quality outcomes faster than anyone else. Helping impact patients’ lives for the better from the moment you join Euc. You’ll be supported to accelerate your career - Regular feedback alongside our bi-annual performance reviews, a professional development budget & leave help ensure you have the support you need to level up. We’re committed to helping every Eucalypt reach their full potential. You’ll work with others who are incredibly passionate about what they do - Our talent bar is high, and our work ethic is strong. You’ll get to stretch yourself every day, be given autonomy to tackle interesting problems, and work amongst people who care deeply about our patients.
We also offer a range of benefits including:
- Your own stake in the business with our employee options program.
- Newly opened HQ in vibrant Old Street, designed for focus and collaboration.
- A flexible hybrid setup: 3 days a week in our Old Street office.
- A monthly wellness allowance, for you to spend on whatever wellness means to you.
- A yearly personal development budget and 3 extra days of leave to continuously up-skill yourself.
- 25 days holiday + bank holidays with an enhanced parental leave policy.
- A fun office with regular socials including after-school sport, clubs, cycle kick-offs, and seasonal parties.
- Your own MacBook and more!
At Eucalyptus, we value individuals from all backgrounds, experiences, and perspectives, and we embrace the unique qualities each person brings. When you apply, please let us know of any reasonable adjustments you may need during the interview process.
Senior Full-Stack Engineer in City of London employer: black.ai
Contact Detail:
black.ai Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Full-Stack Engineer in City of London
✨Tip Number 1
Network like a pro! Reach out to folks in your industry on LinkedIn or at local meetups. A friendly chat can lead to opportunities that aren’t even advertised yet.
✨Tip Number 2
Show off your skills! Create a portfolio or GitHub repo showcasing your projects, especially those using React, TypeScript, and Node.js. This gives potential employers a taste of what you can do.
✨Tip Number 3
Prepare for interviews by practising common questions and coding challenges. We recommend doing mock interviews with friends or using platforms that simulate real interview scenarios.
✨Tip Number 4
Apply through our website! It’s the best way to ensure your application gets seen. Plus, it shows you’re genuinely interested in joining our mission at Eucalyptus.
We think you need these skills to ace Senior Full-Stack Engineer in City of London
Some tips for your application 🫡
Tailor Your Application: Make sure to customise your CV and cover letter to highlight your experience with React, TypeScript, and Node.js. We want to see how your skills align with our mission at Eucalyptus, so don’t hold back on showcasing relevant projects!
Show Your Problem-Solving Skills: In your application, share examples of how you've tackled challenges in previous roles. We love candidates who can demonstrate their curiosity and ability to solve problems, especially in a fast-paced environment like ours.
Be Data-Driven: Since we focus on data-informed decisions, it’s a good idea to mention any experience you have with running experiments or optimising conversion funnels. This will show us that you understand the importance of metrics in driving growth.
Apply Through Our Website: We encourage you to apply directly through our website for the best chance of getting noticed. It’s the easiest way for us to keep track of your application and ensure it reaches the right people!
How to prepare for a job interview at black.ai
✨Know Your Tech Stack
Make sure you brush up on your React, TypeScript, and Node.js skills before the interview. Be ready to discuss specific projects where you've used these technologies, especially in a growth-focused environment. This will show that you not only understand the tools but can also apply them effectively.
✨Understand the Company’s Mission
Eucalyptus is all about making health last a lifetime, so it’s crucial to align your passion for technology with their mission. Research their weight management programme and be prepared to discuss how your role as a Senior Full-Stack Engineer can contribute to their goals. This shows genuine interest and commitment.
✨Prepare for Data-Driven Discussions
Since the role involves running structured, data-informed experiments, be ready to talk about your experience with conversion funnel optimisation and how you've used data to drive decisions in past projects. Bring examples of how your work has led to meaningful outcomes, not just vanity metrics.
✨Showcase Your Problem-Solving Skills
Eucalyptus values curiosity and problem-solving abilities. Think of scenarios where you faced challenges without all the information you needed and how you navigated those situations. This will demonstrate your ability to think critically and adapt, which is essential for this role.
