Midweight Developer (.Net

We’re looking for a Developer who can turn complex technical challenges into clear, maintainable solutions.

At true, we help organisations solve complex problems through thoughtful, well-executed digital products.

As a Midweight .Net Developer , you’ll be a trusted part of true’s Engineering team, helping us design, build, test and deploy thoughtful, robust digital products for our clients.

This isn’t a role for someone who only wants to pick up tickets and ship code in isolation.

It’s about understanding the problem, choosing the right technical approach, writing maintainable code, and contributing to the quality and reliability of the solutions we deliver.

We’re growing, and with that comes more ambitious, more complex client work.

We need someone who can:

• Help us deliver well-structured, maintainable CMS solutions (Optimizely and Umbraco)
• Support the team across planning, scoping, build, testing and deployment
• Bring sound judgement to technical decisions, balancing quality, scalability and cost-effectiveness

You’ll work across client projects and retainers, collaborating with Lead Engineers, Front-end developers, Project managers, QA and wider agency teams to build solutions that are useful, stable and easy to evolve.

• Write reusable, well-considered, maintainable and extensible code across Optimizely/Umbraco CMS and associated .NET applications
• Support the development of Optimizely/Umbraco CMS builds, upgrades, integrations and ongoing platform improvements
• Work with Lead Engineers to turn requirements into clear development tasks and pragmatic technical solutions
• Contribute to content modelling, CMS configuration, templates, components and editor-friendly functionality
• Support integrations with APIs, third-party systems and Front-end applications, including headless or composable approaches where relevant
• Help ensure our technical output is secure, performant, accessible and reliable
• Accurately estimate pieces of work and use learnings from previous projects to improve estimates over time
• Break technical work down clearly so it can be understood, planned and delivered by the wider team
• Write and maintain clear, concise documentation for Developers, QA and project teams to follow
• Review, test and refine your own work before handover, helping reduce rework and protect quality
• Raise technical risks, assumptions and dependencies early, with enough context for others to make informed decisions
• Develop and customise CMS features using .NET, C# and ASP.NET Core
• Work with content types, page types, blocks, media, permissions and editor workflows
• Support CMS builds and upgrades, including modern .NET approaches where appropriate
• Contribute to headless or hybrid implementations using content delivery APIs, Optimizely Graph or similar approaches where required
• Keep the content editor experience in mind, making sure technical solutions are usable for the people managing the site day to day
• Work closely with the CTO and Lead Engineers to deliver high-quality solutions
• Collaborate with Front-end developers to connect CMS functionality with responsive, accessible Front-end experiences
• Partner with QA to support testing, bug fixing, regression checks and release readiness
• Support project and account teams by explaining technical options clearly and contributing to scoping conversations
• Work with IT or hosting partners where infrastructure, deployment or environment questions need technical input
• Contribute to delivery ceremonies, stand‑ups, reviews and retrospectives with a practical, solutions‑focused mindset
• Bring new ideas and process improvements to the team
• Share learnings from projects so we keep improving how we build, maintain and support CMS platforms
• Stay curious about new…