Full-Stack Developer

mmtm; Tewkesbury; On-site; GBP 30,000 - 40,000; Full time

Job summary

Join a forward-thinking digital agency as a Full-Stack Developer, where your expertise in Ruby on Rails, React, and TypeScript will play a vital role in developing innovative web applications. This is an exciting opportunity to contribute to an industry-leading telecom platform while being part of a collaborative and friendly team. Enjoy a hybrid work culture with just one day in the office, a shorter work week, and ample opportunities for professional growth. If you are passionate about clean code and thrive in an agile environment, this role is perfect for you.

Benefits

Annual learning budget

Shorter 35-hour work week

24 days holiday + bank holidays + birthday off

Latest MacBook and required gear

Career development support

Qualifications

• 1-2 years of professional development experience.
• Strong foundation in Ruby on Rails and production-ready features.

Responsibilities

• Support key client projects, primarily in Ruby on Rails.
• Collaborate with team members to shape and ship features.

Skills

Ruby on Rails

React

TypeScript

NodeJS

NestJS

HTML5

CSS3

SASS

Job description

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.