Application Engineer

About Resi LabsResi 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 RoleWe're looking for a strong Product 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, experiences using Hotwire (Turbo & Stimulus) and Tailwind CSSDesign and build full-stack features across our Rails application, from database to UICollaborate with product and design to translate requirements into intuitive, well-crafted interfacesBuild and consume APIs that power both internal tooling and customer-facing featuresWrite clean, well-tested, and maintainable code with a focus on long-term scalabilityWork with our UK property dataset and data pipeline to surface meaningful information through the productParticipate actively in code reviews, giving and receiving feedback constructivelyContribute to architectural discussions and help raise the overall quality bar of the codebaseWhat 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 frameworkA, Job Title: Rolling Stock Project Engineer - Multi DisciplineLocation: Central London (with UK and occasional international travel)Rate: £475 per day (inside IR35) Contract Duration: Until 31st December 2025 (potential extension)An opportunity has arisen for a..., Looking to join a company when you can make a real impact? Do you have 4+ years commercial experience developing software with Java & JavaScript? Full Stack Engineer - SaaS Solutions Salary - up to £75k + bonus Location - hybrid working 2 days a week in modern London...

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 DoBuild polished, responsive frontend, strong eye for frontend quality - you care about how things look and feel, not just whether they workComfortable working with HTML, CSS, and JavaScript across a modern Rails frontend stackFamiliarity with relational databases (PostgreSQL preferred) and writing efficient queriesComfortable building and consuming APIs as part of delivering full-stack featuresExperience 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-engineersAbility to work independently and manage your own delivery without heavy oversightNice to HavesExperience with Three.Js - we're actively building 3D visualisation features and this will be an ongoing and growing part of the productExperience with Hotwire (Turbo & Stimulus) and Tailwind CSSFamiliarity with background job processing (Sidekiq, Delayed Job, etc.)Experience with Python and FastAPI - our data pipeline and, Senior Software Engineer Hayes, London Hybrid We are looking for a Senior Web Application Developer with 5+ years of experience in building and maintaining scalable, high-quality applications to join our growing tech team. As a senior member, you'll play a key role in..., Hey! We're team Granola If you haven't already, you should check out what we're building, and why you should work here.We're looking for an engineer who loves building products in a fast-paced, iterative environment.In this role, you will come up with new ways to unlock...

some supporting services are built in Python, and you'd be expected to maintain and contribute to these alongside the Rails codebaseFamiliarity with Render or similar cloud infrastructure and deployment platformsExperience working in a startup or high-growth environmentOur StackBackend: Ruby on Rails, PostgreSQL, SidekiqData & Services: Python, FastAPIFrontend: Hotwire (Turbo + Stimulus), Tailwind CSS, Three.JsInfrastructure: RenderTooling: GitHub Actions, SentryAbout ResiResi 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'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:Hybrid & flexi workingPrivate health & dental insurance via Bupa33 days of Annual Leave (including bank holidays)An additional day of Birthday Leave after a year of employmentOn the job mentoring, coaching and learning & developmentAccess to therapy, mental health support & coaching via Plumm / EAPEquipment and softwares that enable you to do your best workGym membershipEnhanced parental leaveRegular company-wide socials organised by the Resi social committee, and paid for by ResiOffice and wider Workspace perks including snacks, fresh fruit and refreshments Similar jobs

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