Full Stack Engineer at Plinth
- Company: Plinth
- Location: London
- Employment type: Full Time
- Posted: 2026-09-24
TL;DR:
We’re looking for a full stack developer that wants to make a difference. Come join us to build a platform to radically improve service delivery and increase funding to the charity sector. We don’t have any hard cutoffs for years of experience, you’d be a great fit if you like building products but want a lot more freedom to do so with a large leeway to define your own role.
Reasons why this may be the job for you:
We’re aiming to build an engineering team with high a weight to power ratio. As a result, we aren’t going to be in meetings 7 hours a day, there is no daily scrum, you will not be writing design documents. Our goal is to produce quality software, and to get it into the hands of our users as soon as it’s ready. If you agree with this then we’d love for you to press apply.
If you’ve got a pretty broad exposure to technology and ideally a Computer Science degree (not a hard requirement). We’re looking for a capable generalist who can move between frontend/backend/dev ops but if you’ve not done it before you look at a task and say “I can figure this out easily”.
We’re laissez faire on whether you use AI tooling; if you want to hotspot cursor on the Avanti West Coast line back from Warrington in order to solve a clients issue, we 100% back you (It just better be good code).
We believe that years of experience is a poor metric for discovering quality. If, ideally, you’ve worked a job before, even more ideally you’ve shipped a product from start to end solo. This is the job for you if you want to ship, get it right first time.
💞 What we do
The charity sector is huge. In total income, it’s twice the size of the advertising, fashion and restaurant industries, combined. But it’s also extremely underserved by tech platforms to support the work they do.
That’s what we’re solving. An AI platform for all charities, particularly the smaller, local organisations. That saves them from millions of hours of bureaucracy, helps more people access their services, and supports them to get more funding.
🛠️ The product
We’re not a simple point solution. It’s a comprehensive platform, solving everything from safeguarding information, writing funding applications, taking bookings for venues/activities, giving grants and statutory reporting on Government contracts.
It becomes the system of record for the organisations we work with. On top of this record, we’re building tools to allow charities to deeply understand their impact (with mapping, visualisation and analysis) and to use this information to get more funding — through generating impact reports and funding applications with AI.
As a result of this, one day you could be working on changes to our grant management system for large grant makers or the next you could be figuring out how to improve the onboarding flow for small charities wanting to run events. It’s a broad product with plenty of room for you to define what you’d like to work on.
📈 Where we’re up to
We’re a team of 15 and growing fast. We have over 1,500 charities and 45 foundations using the platform, and we’re working with funders powering £55 million worth of charitable funding annually, which is growing 4x every year.
🪧 Our values
Charities come first. While they don’t pay us, they are the people we need to be focusing on: supporting them to work towards their own missions more effectively. Being trusted by them is the most important thing.
Childish enthusiasm is better than professional cynicism.
Open and transparent. Better to be appear dumb than pretend you understand.
Never the delay. Things move slowly in our sector, but we're not going to be responsible for it. We need to be unreasonably fast.
Driven by the mission. We're going to work hard, because getting this right could be massive.
There are no ninjas, there is no door. We need to figure out how to solve the tricky problems ourselves, because no one else is going to.
Writing front-end and back-end code in Typescript.
Shaping the architecture for new and existing features.
Building tools to support onboarding new customers, as we help more and more people migrate off existing systems.
Fixing bugs, and supporting the customer success team to handle user issues.
🤳 What we’re looking for
Someone who can build reusable infrastructure with sensible interfaces that’s easy for team members (both human and AI) to build on top of.
Willing to take on complex features from the initial idea to maintaining them in production.
Multiple years experience shipping code and managing complex systems.
Familiarity with React, ideally some experience of Elasticsearch.
All of the standard stuff: Git, agile, testing, etc etc
Ideally, some experience with the charity sector, either in employment, or as a volunteer/trustee.
💸 Logistics
Location: London (we work regularly from our Old Street office)
Salary: £90-110k, with meaningful equity
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