Senior Full Stack Developer

Job role : Senior Full Stack Developer

Start date : ASAP

Full time

Remote / UK

Introduction

OnePlan is the world’s best event and venue planning platform. Used for 35,000+ events and venues in more than 110 countries - including Paris 2024 Olympic and Paralympic Games, major sports organisations, music festivals and more- OnePlan is revolutionising how events and venues are planned ( www.oneplan .io and www.venuetwin.com ).

OnePlan is a collaborative, real-time platform that provides the full suite of event planning, design and management tools. It combines the best characteristics of CAD with up-to-date mapping technology in one easy-to-use solution. (www.oneplanevents.com)

OnePlan’s 3D visualisation software, Venue Twin is the hyper-realistic way to plan events (www.venuetwin.com). It gives access to organisations, stakeholders and suppliers. Clients include ExCel.

We've garnered an impressive collection of accolades, including the Most Innovative Business Response to Covid-19 from the Sports Business Awards in 2021, Best Event Management Platform 2021 and Best Festival Technology in 2020, 2021, and 2022 at the Event Technology Awards. Additionally, we received the Leaders in Sport Innovation Award in 2022 and the Technology & Innovation Award at the Franco British Trade and Investment Awards 2022 (DIT). In 2023 we clinched the International Expansion Award and received high commendation for the Eagle Labs Innovation Award at Barclay's Entrepreneur Awards, and were recognised as one of the 2023 Sports Business Journal's Top 10 Most Innovative Sports Tech Companies. We were nominated for the 2024 Sports Business Awards in the Tech for Venue Operations Technology of the Year category. Most recently in 2025, we have won the KPMG Tech Innovator 2025 award for London.

Job title : Senior full-stack developer

Job role :

We are seeking an experienced Senior Full Stack Web Developer to join our dynamic team. As a Senior Developer, you will play a key role in the design, development, and maintenance of our collaborative, real-time platform called OnePlan. This platform provides a comprehensive suite of event planning, visualisation, and management tools, combining the best features canvas and mapping technology.

Key Responsibilities :

• Develop full‑stack features using Python (Django) and React, building on, maintaining and scaling our frontend and backend applications.
• API & service development : design, implement, and maintain REST APIs; ensure robust integrations and clear documentation.
• Test-first development : practise Test Driven Development, and write and maintain BDD test scenarios (using Gherkin syntax)
• Collaborate with fellow engineers, product and design to deliver high-quality solutions, contribute to architectural decisions, drive tech stack improvements and product evolution.
• Geospatial and mapping features : build and maintain interactive canvas and mapping features leveraging GIS and canvas tools (e.g. Esri, Konvajs)
• Code review & knowledge sharing : participate in PR reviews, mentoring, and knowledge transfer across team members.
• Commercial and product thinking : contribute to roadmap and product direction, balancing technical excellence with customer and business value
• Observability & optimisation : monitor production systems, troubleshoot issues, identify performance bottlenecks, and help manage technical debt.

Your profile :

What we offer :

OnePlan is a remote first company, with our team based on multiple continents. We want to work with the best and welcome people from all backgrounds who have the ambition and motivation to help OnePlan become the go-to operating system for event and venue planners everywhere