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- Tasks: Build innovative products that help homeowners make better renovation decisions.
- Company: Join Resi Labs, the tech arm of the UK's largest residential architecture practice.
- Benefits: Enjoy hybrid working, private health insurance, 33 days annual leave, and more!
- Why this job: Make a real impact with cutting-edge tech and a supportive team culture.
- Qualifications: Strong Ruby on Rails skills and a passion for frontend experiences required.
- Other info: Collaborative environment with excellent career growth and personal development opportunities.
The predicted salary is between 36000 - 60000 £ per year.
About Resi Labs
Resi Labs is the technology and innovation arm of Resi, the UK's largest residential architecture practice. We are building products that help millions of homeowners make better renovation decisions - from understanding planning feasibility and build costs to visualising what is 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 are looking for a strong Product Engineer (full-stack) to join our product engineering team. You will 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 will 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 is 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 will 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 are also fortunate to be working on a relatively greenfield codebase with limited technical debt, meaning you will spend your time building thoughtfully rather than fighting legacy decisions. And we are 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 Will Do
- 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 Are 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 have 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 are 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 would 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 ~70, currently based in Oval, but shortly relocating to a shiny new office in a 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 is 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 do not 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:
- 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
- On the job mentoring, coaching and learning & development
- Access to therapy, mental health support & coaching via Plumm / EAP
- Equipment and software that enable you to do your best work
- Gym membership
- Enhanced parental leave
- Regular company-wide socials organised by the Resi social committee, and paid for by Resi
- Office and wider Workspace perks including snacks, fresh fruit and refreshments
Product Engineer (Ruby on Rails) in City of London employer: Resi
Contact Detail:
Resi Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Product Engineer (Ruby on Rails) in City of London
✨Tip Number 1
Network like a pro! Reach out to folks in the industry, attend meetups, and connect with Resi Labs on LinkedIn. You never know who might have the inside scoop on job openings or can put in a good word for you.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your best Ruby on Rails projects. Make sure to highlight any frontend work you've done too. This is your chance to shine and demonstrate what you can bring to the table.
✨Tip Number 3
Prepare for those interviews! Research Resi Labs and their products thoroughly. Be ready to discuss how your experience aligns with their needs, especially around working with complex datasets and building user-friendly interfaces.
✨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 Resi Labs team. Don’t miss out!
We think you need these skills to ace Product Engineer (Ruby on Rails) in City of London
Some tips for your application 🫡
Tailor Your Application: Make sure to customise your CV and cover letter for the Product Engineer role. Highlight your Ruby on Rails experience and any relevant projects you've worked on. We want to see how your skills align with what we're building at Resi Labs!
Show Off Your Passion: Let us know why you're excited about working with data and building frontend experiences. Share any personal projects or interests that showcase your enthusiasm for tech and innovation. We love seeing candidates who are genuinely passionate about what they do!
Be Clear and Concise: When writing your application, keep it straightforward and to the point. Use clear language to describe your experience and skills. We appreciate a well-structured application that makes it easy for us to see your qualifications at a glance.
Apply Through Our Website: Don't forget to submit your application through our website! This helps us keep everything organised and ensures your application gets the attention it deserves. Plus, it's super easy to do!
How to prepare for a job interview at Resi
✨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 frontend quality, be ready to talk about your experience with HTML, CSS, and JavaScript. Bring examples of polished, responsive designs you've created, and explain your thought process behind making them user-friendly. This will demonstrate your passion for creating great user experiences.
✨Familiarise Yourself with Their Tech Stack
Take some time to understand Resi Labs' tech stack, including Hotwire, Tailwind CSS, and PostgreSQL. If you have experience with these technologies, be sure to highlight it. If not, showing a willingness to learn and adapt can go a long way in impressing the interviewers.
✨Prepare for Collaborative Discussions
Given the emphasis on collaboration in the job description, think about how you can contribute to architectural discussions and code reviews. Prepare examples of how you've worked with teams in the past, and be ready to discuss how you handle feedback constructively. This will showcase your good communication skills and collaborative mindset.