Full-Stack Developer

Full-Stack Developer

Tewkesbury (UK) – Hybrid Remote (Tuesdays in-office) – UK Applicants Only

Key Technologies – Ruby on Rails • React • TypeScript • NodeJS • NestJS

mmtm (pronounced momentum) is a UK-based digital agency designing and building custom web apps for a range of industries. We’re a small (but growing) remote-first team that cares about clean design, thoughtful strategy, and code that people actually use.

We work as long-term partners to our clients, playing a critical role in their growth through the products we build and manage. Right now, we’re also growing our own in-house product suite - so it’s a great time to get on board.

The Role

We’re looking for a Ruby on Rails developer with full-stack experience to join our friendly, fast-moving team. You’ll be supporting one of our key client projects - an industry-leading fibre telecoms platform - as well as occasionally contributing to other projects across our client base.

You’ll be joining a close-knit squad of developers and PMs, helping shape and ship features from start to finish - working heavily with React and TypeScript, as well as some interaction with NodeJS and NestJS too.

We’re collaborative, not siloed - so even if you’re focused on one client, you’ll always be part of the wider mmtm team.

What We’re Looking For

• A minimum of 1–2 years of professional experience as a developer.
• Strong foundation in Ruby on Rails, building production-ready features.
• Comfortable across the stack, with working knowledge of React and TypeScript.
• Some experience (or interest in learning) NestJS or other NodeJS frameworks.
• Good grasp of HTML5, CSS3, and SASS.
• UK-based and happy to join us in our Tewkesbury office on Tuesdays.
• Collaborative, positive mindset – someone who thrives in an agile team.
• Passion for clean code, curiosity about new tools, and a focus on practical solutions.
• Friendly, upbeat attitude, and an ability to keep up with our terrible puns and GIFs.

Bonus points for:

• Previous agency experience.
• Mobile development using Flutter.

What You’ll Get

• £30k–£40k salary depending on experience, with regular reviews.
• Remote-first culture with hybrid working (just one in-office day a week).
• Shorter 35-hour work week plus 24 days’ holiday + bank holidays + your birthday off 🎂
• Annual learning budget for books, courses or conferences.
• Latest MacBook and any gear you need.
• Career development support: regular check-ins, annual reviews, and space to grow.

How We Hire

We keep the process simple, supportive, and human:

1. Apply – Send us your CV.
2. Intro Chat – 30-minute video call with our founders.
3. Tech Interview – Live coding session and technical conversation.
4. Offer – If it’s a fit on both sides, we’ll make an offer right away 🚀

We’re open to both full-time employment or an initial 6–12 month contract – just let us know what suits you best.