Find a job 
Featured Companies 
Featured Universities 
For Companies At a Glance
- Tasks: Lead a small engineering team and build scalable e-commerce solutions using Node.js and React.
- Company: Join Birl, a pioneering circular commerce startup transforming resale and recycling.
- Benefits: Enjoy a competitive salary, hybrid work, 33 days holiday, and top-notch tech.
- Why this job: Make a real impact in sustainable retail while working with innovative technologies.
- Qualifications: 7+ years full-stack experience and a passion for mentoring and innovation.
- Other info: Dynamic environment with opportunities for professional growth and collaboration.
The predicted salary is between 60000 - 90000 £ per year.
About Birl
Launched in 2024, Birl has quickly become one of the UK’s most exciting circular commerce startups, redefining how resale and recycling can drive growth rather than cost. Birl’s plug-and-play platform integrates directly into a brand’s e-commerce site or in-store system, enabling customers to trade in pre-loved products for instant store credit. Birl manages the full process – AI verification, logistics, resale, and recycling - giving brands a no-touch circular solution that builds loyalty, generates new revenue, and delivers measurable ESG impact. Already live with over 10 premium fashion brands including Frahm Jackets, SIRPLUS, and Far Afield, Birl has expanded into sport through partnerships with Castore, Fanatics and West Ham United. These collaborations show that circular retail can scale commercially across multiple sectors. Backed by Innovate UK and early-stage VCs, and Winner of this year’s UK eCommerce Innovation Award (October 2025), Birl’s vision is to build the technology backbone for a world where every product has more than one life - making circular retail effortless, measurable, and commercially viable.
Position Summary
The Senior Software Engineer will play a central role in building Birl’s platform and leading our engineering capability. E-commerce experience is essential, with premium fashion and logistics experience highly desirable. This role combines full-stack development (Node.js, React, JavaScript) with mentoring and guiding a small engineering team. Ideal candidates will have experience building scalable e-commerce systems, integrating third-party platforms (e.g., Shopify), and applying AI/ML to enhance performance and automation.
Responsibilities
- Lead and mentor a small engineering team
- Architect and build scalable integrations across the e-commerce ecosystem
- Develop new features and infrastructure using Node.js, React, JavaScript, GCP
- Own and contribute to the technical roadmap
- Maintain high code quality, performance, and reliability
- Communicate effectively with both technical and non-technical stakeholders
- Implement data optimisation strategies
- Apply AI/ML technologies where relevant
- Troubleshoot and resolve issues across systems and integrations
- Improve and participate in agile development practices
- Conduct code reviews and mentor junior engineers
Skills & Qualifications
- Degree in Computer Science, Engineering, or similar
- 7+ years full-stack experience with Node.js, React, JavaScript
- Experience integrating e-commerce platforms (e.g., Shopify)
- Experience leading or mentoring engineers
- Strong understanding of Agile and DevOps practices
- Excellent problem-solving and communication skills
- Experience with AI/ML (image recognition, automation, pricing) is a plus
- Familiarity with cloud platforms, microservices, and modern architecture
- Proactive, solution-oriented mindset with a passion for innovation
Logistics
- Work Location: United Kingdom only (London preference)
- Timezone: UTC (London) ± 2 hours
- Working Pattern: Hybrid (up to 3 days remote per week)
- Visa Sponsorship: Not available
Compensation - What You Get
- £60-90k (based on experience)
- Hybrid working with access to our London office
- 33 days paid holiday
- Top-of-the-range laptop
- Pension scheme
- Company away days and regular team socials
Interview Process
- Application and short cover note
- Technical test
- Interview with the engineering team
- Founder interview
- Offer
Full Stack Engineer in London employer: Birl 🟣
Contact Detail:
Birl 🟣 Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Full Stack Engineer in London
✨Tip Number 1
Network like a pro! Reach out to people in the industry, especially those at Birl or similar companies. A friendly chat can sometimes lead to job opportunities that aren't even advertised.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your projects, especially any e-commerce systems you've built. This gives you a chance to demonstrate your full-stack capabilities and problem-solving skills.
✨Tip Number 3
Prepare for the technical test! Brush up on Node.js, React, and JavaScript. Practising coding challenges can help you feel more confident and ready to impress during the interview process.
✨Tip Number 4
Apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you're genuinely interested in joining the Birl team.
We think you need these skills to ace Full Stack Engineer in London
Some tips for your application 🫡
Craft a Compelling Cover Note: Your cover note is your first impression, so make it count! Keep it concise but engaging, highlighting your relevant experience and why you’re excited about joining Birl. Show us your personality and passion for circular commerce!
Tailor Your CV: Don’t just send the same CV to everyone! Tailor it to showcase your full-stack experience with Node.js, React, and JavaScript. Highlight any e-commerce projects you've worked on, especially those involving integrations or AI/ML technologies.
Showcase Your Problem-Solving Skills: In your application, give examples of how you've tackled challenges in past projects. We love candidates who can think on their feet and come up with innovative solutions, especially in the fast-paced world of e-commerce!
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way to ensure your application gets into the right hands. Plus, it shows us you’re genuinely interested in being part of our team at Birl!
How to prepare for a job interview at Birl 🟣
✨Know Your Tech Stack
Make sure you’re well-versed in Node.js, React, and JavaScript. Brush up on your full-stack development skills and be ready to discuss how you've used these technologies in past projects, especially in e-commerce settings.
✨Showcase Your Leadership Skills
Since the role involves mentoring a small engineering team, prepare examples of how you've successfully led or guided others in previous positions. Highlight your approach to fostering collaboration and improving team performance.
✨Understand Circular Commerce
Familiarise yourself with the concept of circular commerce and Birl’s mission. Be prepared to discuss how your technical skills can contribute to their vision of making retail more sustainable and efficient.
✨Prepare for Technical Challenges
Expect a technical test as part of the interview process. Practice coding challenges that involve building scalable systems and integrating third-party platforms like Shopify. This will help you demonstrate your problem-solving abilities under pressure.
