--- title: 'Full Stack Engineer at Plinth' canonical: 'https://feeny.ai/job/full-stack-engineer-plinth-london-n8t7qhj0f2wx' type: 'job' last_seen: '2026-09-06' --- # Full Stack Engineer at Plinth - **Company:** Plinth - **Location:** London, United Kingdom - **Employment:** full-time - **Work type:** onsite - **Posted:** 2026-07-31 - **Last confirmed live:** 2026-09-06 - **Apply:** https://jobs.ashbyhq.com/plinth/eb34c8ea-a0f2-499e-b48f-5a0a00896f16 ## Job description ## 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. ## ⏳ PLINTH: ## 💞 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. ## 📋 THE ROLE - 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 ## About Plinth ## Company Overview - **One-liner**: An AI-powered platform that helps organisations deliver, measure, and fund community impact, serving charities, foundations, and local government. - **Entity Type**: Private (Startup) - **Headquarters**: London, United Kingdom - **Founded**: 2016 - **Founders**: Tom Neill-Eagle (Co-Founder & CEO), William Thompson (Co-Founder) ## Core Business - **Primary industry/industries**: Software Development / Social Impact Technology - **Target customers**: B2B and B2G – charities (small, large), community interest companies (CICs), housing associations, foundations, local infrastructure organisations, and local authorities across the UK and internationally. - **Mission or purpose statement**: “Build stronger communities.” ## Products & Services - **[Grant Management](https://www.plinth.org.uk/)**: AI-powered due diligence, application scoring, risk assessment, automated checks against Charity Commission data, pipeline tracking, and built-in funder reporting. Used by 60+ UK funders. - **[Case Management](https://www.plinth.org.uk/)**: AI-generated case notes from voice recordings, client journey tracking, outcome monitoring, secure data sharing with referral partners, and safeguarding workflows. - **[Bookings & Payments](https://www.plinth.org.uk/)**: Event scheduling, public booking pages, integrated Stripe payments with automatic receipts, room/resource management, and calendar views for venues and activities. - **[Impact Measurement](https://www.plinth.org.uk/)**: AI-powered analytics to measure, report, and demonstrate social impact with anonymised and aggregated data sharing. - **[Secure Collaboration](https://www.plinth.org.uk/)**: Each organisation manages its own personal data and chooses whom to share aggregated reporting information with. - **[Crisis & Resilience Fund, Family Hubs, HAF Programmes, Community Grants](https://www.plinth.org.uk/)**: Purpose-built modules for specific government and foundation programmes (e.g., Holiday Activity & Food, CRF, Family Hubs). ## Market Standing - **Valuation/Market Cap**: Not publicly available - **Key Metric**: Trusted by **1,500+ community organisations** and **60+ funders**, managing over **£200m in annual grant making** ([plinth.org.uk](https://www.plinth.org.uk/)) - **Notable Investors/Partners**: Not disclosed in available sources. Clients include Rank Foundation, Point North, Steve Morgan Foundation. - **Growth Signals**: - Growing **3–4× this year**, onboarding **7+ new clients per month** ([plinth.org.uk/careers](https://www.plinth.org.uk/careers)) - Headcount **9 employees**, **+27.3% year-over-year**, **+16.7% monthly growth** ([linkedin.com](https://uk.linkedin.com/company/plinth-impact)) - **International expansion underway** beyond the UK ([plinth.org.uk/careers](https://www.plinth.org.uk/careers)) ## Competitive Advantages - **All-in-one platform** combining grant management, case management, bookings/payments, and impact measurement – reducing the need for multiple tools. - **Free forever tier** for small charities and CICs, lowering the barrier to adoption. - **AI-native** with automated due diligence, application scoring, case note transcription, and impact analytics, saving frontline organisations significant admin time. - **Built for the UK public and social sector** – complies with WCAG accessibility standards, Charity Commission data integration, and DfE reporting (e.g., HAF). - **Privacy and security first** – encrypted data at rest and in transit, defined user access roles. ## Strategic Focus - **Scaling sales and partnerships** across Local Authorities in the UK, currently hiring a Local Government Partnerships Manager ([plinth.org.uk/careers](https://www.plinth.org.uk/careers)) - **Winning case management deals** with charities delivering frontline services (youth work, mental health, etc.) and supporting international expansion. - **Continuous product development** with frequent feature releases; the small, fast-moving team enables quick turnaround from idea to action. ## Why Work Here - **Real-world impact** – Work directly with charities, grassroots organisations, and government bodies to reduce admin burden and amplify community impact. - **Fast growth and ownership** – Growing 3–4× per year; team members have clear ownership over projects that directly shape how the company scales. - **Collaborative, in-person culture** – Office in Old Street, London. Typical time on-site is “In-Office” but the company describes itself as a **hybrid** workspace (combination of remote and on-site) ([builtin.com](https://builtin.com/company/plinth-1)). - **Transparency and trust** – Open about mistakes, no professional cynicism, good ideas turn quickly into action. - **Values-driven hiring** – Looks for **plain language, impressiveness (weird projects), excitement, curiosity, and ambition** ([plinth.org.uk/careers](https://www.plinth.org.uk/careers)). - **Key team composition** – Small team of 9 (27% consulting, 7% technical, 7% product, 4% project management) with co-founders still actively leading ([linkedin.com](https://uk.linkedin.com/company/plinth-impact)). ## Sources 1. [plinth.org.uk](https://www.plinth.org.uk/) – Company website, product descriptions, mission, clients, free tier. 2. [plinth.org.uk/careers](https://www.plinth.org.uk/careers/) – Culture, growth metrics, hiring values, open roles. 3. [builtin.com](https://builtin.com/company/plinth-1) – Founded year, hybrid policy, office location, job listings. 4. [linkedin.com](https://uk.linkedin.com/company/plinth-impact) – Headcount, growth, founders, headquarters, industry. ## Other roles at Plinth - [Customer Success Manager](https://feeny.ai/job/customer-success-manager-plinth-london-vvv0kc8dnzy2) — London, United Kingdom - [Operations Associate](https://feeny.ai/job/operations-associate-plinth-london-7q3rhgvjt0cc) — London, United Kingdom - [Customer Support Analyst](https://feeny.ai/job/customer-support-analyst-plinth-london-bs1vjkh58q60) — London, United Kingdom - [Growth Lead](https://feeny.ai/job/growth-lead-plinth-london-a22wjg6556pb) — London, United Kingdom - [Partnerships Executive (Sector Specialist)](https://feeny.ai/job/partnerships-executive-sector-specialist-plinth-london-cyj9qeqcdazs) — London, United Kingdom - [Partnerships Executive (Sales Specialist)](https://feeny.ai/job/partnerships-executive-sales-specialist-plinth-london-gqyfevwhatfn) — London, United Kingdom - [Full Stack Engineer](https://feeny.ai/job/full-stack-engineer-lightfeather-io-llc-united-states-vnwe11b43201) — United States - [Full Stack Engineer](https://feeny.ai/job/full-stack-engineer-capital-technology-group-united-states-cq5y35dekfca) — United States - [Full Stack Engineer](https://feeny.ai/job/full-stack-engineer-axs-new-orleans-aswp0cf6xkek) — New Orleans, LA - [Full Stack Engineer](https://feeny.ai/job/full-stack-engineer-sphinx-defense-remote-7sk9q88jwshe)