Senior Developer

Tetra Tech; United Kingdom; Hybrid; GBP 70,000 - 100,000; Full time

Job summary

Tetra Tech is seeking an experienced Senior Developer to join our Client Digital Solutions team in the UK. You will design, build, test and support cloud-based software using Azure, C#/.NET and Angular, delivering secure applications across the full software lifecycle.

This remote role offers agile working with occasional attendance in the Abingdon office; you will work with developers, testers and technical leads to translate backlog items into reliable code, mentor juniors, and help shape

Qualifications

• Proven commercial software development experience with Azure cloud solutions.
• Hands-on Angular and C#/.NET development; API design and implementation.
• Experience with unit testing, CI/CD, and Git version control.
• Line management or mentoring experience is a plus.

Responsibilities

• Develop, test and support cloud-based SaaS applications on Azure.
• Collaborate with developers, testers and technical leads across projects.
• Mentor junior developers and contribute to technical standards.
• Deliver secure, well-documented software across the full lifecycle.

Skills

Azure cloud

Angular

C#/.NET

API development

unit testing

Git

line management

mentoring

Tools

SQL Server

Cosmos DB

Azure DevOps

Job description

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.