Senior Developer

Senior Developer Build cloud solutions that make a real impact Purpose and Scope of the Role Tetra Tech is seeking an experienced Senior Developer to join our Client Digital Solutions team. You will help design, build, test and support market-leading cloud-based software for UK and NL services, as well as wider international clients. Working within a collaborative development team, you will deliver secure, high-quality applications across the full software lifecycle, using Microsoft Azure, C#/.NET, Angular and modern delivery pipelines. You will work closely with developers, testers and technical leads to translate backlog items into reliable code, maintain live solutions, resolve issues, and produce clear technical and end-user documentation.

Your Impact in This Position In the short term, you will strengthen delivery on active projects and contribute to stable, well-tested releases. In the medium term, you will shape new external software solutions and influence development standards, architecture and quality. Over time, you will broaden your technical scope, develop your mentoring capability and build a pathway into greater technical leadership within significant digital delivery programmes.

Core Capabilities Cloud Application Delivery Proven ability to develop, deploy, test and support Azure-based SaaS solutions to agreed architecture and quality standards.

Front-End and API Development Strong Angular, C# and .NET skills, with experience delivering robust UI and API solutions using sound design patterns and best practice.

Quality and Reliability Confident in unit testing, CI/CD, code quality checks and secure development practices, with attention to non-functional requirements.

Collaboration and Delivery Effective at working with developers, testers and technical leads, managing priorities, meeting deadlines and supporting backlog refinement and estimation.

Line Management Experience in line management and ability to mentor more junior members of the Developer team.

Skills, Qualifications And Experience Essential: commercial software development experience; Azure cloud solution delivery; Angular; C#/.NET; API development; unit testing; Git. Plus, line management experience.

Desirable: technical client-facing experience; SQL Server, Cosmos DB or similar; Azure DevOps; backlog definition and estimation; Bicep; GIS awareness; mentoring or line management.

Work Patterns and Locations This is a remote role with agile working as standard. Office attendance will be occasional team meetings in at least once a month in the Abingdon office.

Why join Tetra Tech? Tetra Tech is a leading provider of consulting and engineering services working across the full project lifecycle worldwide. We have a wide range of expertise across our teams, providing a global support network with a personalised approach to client relationships to better understand where we can add value. We provide a collaborative environment that supports individual performance, innovation, and creativity.

We support public and private sector clients on local, national, and international projects to deliver sustainable and resilient solutions. Our operations in the UK, Ireland, and the Netherlands include more than 6,000 employees who are Leading with Science® to solve our clients’ most complex problems.

In alignment with the Equality Act 2010, we will make reasonable adjustments to support candidates and employees requiring additional arrangements. This could include adaptations to work schedules, training approaches, or the physical workspace. Please inform us if you need any accommodations during the recruitment process or in your day-to-day role.