At a Glance
- Tasks: Build innovative software solutions that help homeowners make better renovation decisions.
- Company: Join Resi Labs, the tech arm of the UK's largest residential architecture practice.
- Benefits: Enjoy a competitive salary, hybrid working, and 33 days of annual leave.
- Other info: Be part of a diverse team focused on personal growth and innovation.
- Why this job: Make a real impact with cutting-edge technology in a collaborative environment.
- Qualifications: Strong Ruby on Rails skills and a passion for frontend development required.
The predicted salary is between 50000 - 60000 € per year.
About Resi Labs
Resi Labs is the technology and innovation arm of Resi, the UK's largest residential architecture practice. We're building products that help millions of homeowners make better renovation decisions - from understanding planning feasibility and build costs to visualising what's possible with their property. We sit on a unique dataset built over a decade: 2 million planning applications, 40,000 builder quotes, and thousands of detailed floor plans and 3D models linking design, planning, and cost data in ways no one else can. Our products are already embedded on platforms like Rightmove and Zoopla, reaching millions of homeowners per year.
About The Role
We're looking for a strong Software Engineer (full-stack) to join our product engineering team. You'll be someone who thinks of yourself as an engineer first, with deep hands-on experience in Ruby on Rails and a genuine passion for building great frontend experiences. You'll take pride in the quality of what users see and interact with, while being equally capable of working across the full stack to deliver features end-to-end.
As a small, autonomous team, there's a real opportunity to lead here. To shape technical direction, own meaningful pieces of the product, and have your voice heard. At the core of what we build is a large dataset and data processing pipeline covering UK property data. You'll work closely with this data, helping to consume, refine, and unlock its value based on evolving product requirements - so an interest in working with complex, real-world datasets will serve you well.
We're also fortunate to be working on a relatively greenfield codebase with limited technical debt, meaning you'll spend your time building thoughtfully rather than fighting legacy decisions. And we're genuine believers in AI-powered workflows, from how we write code to how the business operates day-to-day, so comfort with and curiosity about AI tooling is a must.
What You'll Do as our new Software Engineer
- Build polished, responsive frontend experiences using Hotwire (Turbo & Stimulus) and Tailwind CSS
- Design and build full-stack features across our Rails application, from database to UI
- Collaborate with product and design to translate requirements into intuitive, well-crafted interfaces
- Build and consume APIs that power both internal tooling and customer-facing features
- Write clean, well-tested, and maintainable code with a focus on long-term scalability
- Work with our UK property dataset and data pipeline to surface meaningful information through the product
- Participate actively in code reviews, giving and receiving feedback constructively
- Contribute to architectural discussions and help raise the overall quality bar of the codebase
What We're Looking For
- ~5 years of professional software engineering experience (we care more about the quality of that experience than the exact number!)
- Strong proficiency in Ruby on Rails - you've built and maintained production Rails apps and feel genuinely at home in the framework
- A strong eye for frontend quality - you care about how things look and feel, not just whether they work
- Comfortable working with HTML, CSS, and JavaScript across a modern Rails frontend stack
- Familiarity with relational databases (PostgreSQL preferred) and writing efficient queries
- Comfortable building and consuming APIs as part of delivering full-stack features
- Experience writing automated tests (RSpec, Minitest, or similar)
- Good communication skills and a collaborative mindset - you can explain technical decisions clearly to both engineers and non-engineers
- Ability to work independently and manage your own delivery without heavy oversight
Nice to Haves
- Experience with Three.js - we're actively building 3D visualisation features and this will be an ongoing and growing part of the product
- Experience with Hotwire (Turbo & Stimulus) and Tailwind CSS
- Familiarity with background job processing (Sidekiq, Delayed Job, etc.)
- Experience with Python and FastAPI - our data pipeline and some supporting services are built in Python, and you'd be expected to maintain and contribute to these alongside the Rails codebase
- Familiarity with Render or similar cloud infrastructure and deployment platforms
- Experience working in a startup or high-growth environment
Our Stack
- Backend: Ruby on Rails, PostgreSQL, Sidekiq
- Data & Services: Python, FastAPI
- Frontend: Hotwire (Turbo Stimulus), Tailwind CSS, Three.js
- Infrastructure: Render
- Tooling: GitHub Actions, Sentry
About Resi
Resi is the UK's number one home extension company transforming how homeowners design, plan and build. With over 10,000 projects nationwide and a 95% planning approval rate, we make architecture accessible and transparent through a digital platform that brings design, planning and build support together. We are a team of ~60 based in the Fora in Elephant & Castle.
At Resi, you will have the opportunity to work differently, take control of, and really accelerate your career. Our success is all down to our wonderful people and their talent, and that's why we treat our employees with the same respect and care as our customers. We pride ourselves in not just aiming to be the best in the industry, but also the best place to work - our collaborative, transparent and diverse culture, with a heavy focus on personal development, means that we don't just grow homes, we grow people too. We have an ideas-led innovation culture and we really care about creating a diverse and inclusive team - so we welcome people from all backgrounds with different perspectives, ideas and experiences to work with us.
We offer our employees:
- A competitive salary
- Hybrid & flexi working
- Private health & dental insurance via Bupa
- 33 days of Annual Leave (including bank holidays)
- An additional day of Birthday Leave after a year of employment
- An additional two days of Peace of Mind leave after 3 years of employment
- Tiered annual leave (1 year per year of service) after 5 years of employment
- August Summer hours
- Work anywhere in the world for one week per year
- Access to therapy, mental health support & coaching via Plumm / EAP
- Gym membership
- Enhanced parental leave
- Regular company-wide socials organised by the Resi social committee, and paid for by Resi
- A lovely office, plus wider Fora perks including snacks, fresh fruit and refreshments
Software Engineer (Ruby on Rails) in London employer: LinkedIn
At Resi Labs, we pride ourselves on being an exceptional employer, offering a vibrant work culture that fosters collaboration and innovation. Our commitment to employee growth is evident through our focus on personal development, competitive benefits like hybrid working, generous annual leave, and mental health support, all within a dynamic environment located in the heart of Elephant & Castle. Join us to not only shape the future of residential architecture but also to thrive in your career alongside a diverse and talented team.
StudySmarter Expert Advice🤫
We think this is how you could land Software Engineer (Ruby on Rails) in London
✨Tip Number 1
Network like a pro! Reach out to current employees at Resi Labs on LinkedIn or other platforms. Ask them about their experiences and any tips they might have for the interview process. It’s all about making connections!
✨Tip Number 2
Prepare for technical interviews by brushing up on your Ruby on Rails skills. Work on some side projects or contribute to open-source to showcase your expertise. Remember, it’s not just about coding; be ready to discuss your thought process!
✨Tip Number 3
Show your passion for the product! Familiarise yourself with Resi's offerings and think about how you can contribute to their mission. Bring ideas to the table during interviews to demonstrate your enthusiasm and creativity.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen. Plus, it shows you’re genuinely interested in joining the team at Resi Labs. Let’s get you that job!
We think you need these skills to ace Software Engineer (Ruby on Rails) in London
Some tips for your application 🫡
Show Your Passion for Ruby on Rails:When you're writing your application, make sure to highlight your love for Ruby on Rails. Share specific projects you've worked on and what you enjoyed about them. We want to see that you're not just skilled, but genuinely excited about building with this framework!
Craft a Clean and Engaging Cover Letter:Your cover letter is your chance to shine! Keep it concise but engaging. Tell us why you're interested in Resi Labs and how your experience aligns with our mission. A personal touch goes a long way in making your application stand out.
Demonstrate Your Frontend Flair:Since we care about how things look and feel, don’t forget to showcase your frontend skills. Include examples of polished, responsive designs you've created. We want to see your eye for detail and how you approach user experience!
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 that you’re proactive and keen to join our team at Resi Labs!
How to prepare for a job interview at LinkedIn
✨Know Your Ruby on Rails Inside Out
Make sure you brush up on your Ruby on Rails skills before the interview. Be prepared to discuss your past projects, the challenges you faced, and how you overcame them. This will show that you not only know the framework but can also apply it effectively in real-world scenarios.
✨Showcase Your Frontend Flair
Since the role emphasises building polished frontend experiences, be ready to talk about your experience with HTML, CSS, and JavaScript. Bring examples of your work that highlight your eye for design and user experience. If you've used Hotwire or Tailwind CSS, definitely mention that!
✨Get Familiar with Their Data
Resi Labs works with a unique dataset related to UK property data. Do some research on how this data is used in their products and think about how you could contribute to refining and unlocking its value. Showing genuine interest in their data processing pipeline will set you apart.
✨Prepare for Collaborative Discussions
As a small team, collaboration is key at Resi Labs. Be ready to discuss how you communicate technical decisions to both engineers and non-engineers. Think of examples where you've successfully collaborated on projects and how you handle feedback during code reviews.
