Senior Full Stack Engineer - .NET/C#

We are looking for a Senior Software Engineer to join a purpose-driven technology consultancy delivering meaningful digital transformation across the public, private, and third sectors. This is an opportunity to work on complex, impactful projects that improve outcomes for people, organisations, and communities.

As a Senior Software Engineer, you'll play a key role in designing, developing, and delivering high-quality software solutions while collaborating with multidisciplinary teams across engineering, design, data, and product. You'll contribute to architecture decisions, mentor engineers, and help drive engineering best practices across a variety of client engagements.

We value adaptability over expertise in any single technology. While many projects utilise C# and .NET, you'll be joining a technology-agnostic environment where continuous learning, collaboration,and professional development are actively encouraged.

Responsibilities

• Design, develop, and maintain robust, secure, scalable, and well-tested software solutions.
• Contribute to software architecture and technical design decisions, ensuring alignment with client and business objectives.
• Mentor and support junior engineers, promoting engineering excellence and development best practices.
• Collaborate with Product Managers, Designers, QA Engineers, DevOps specialists, and client stakeholders to deliver successful outcomes.
• Implement and optimise CI/CD pipelines to improve delivery efficiency and software quality.
• Participate in code reviews, providing constructive feedback and maintaining high coding standards.
• Troubleshoot and resolve complex technical challenges across multiple projects and environments.
• Contribute to continuous improvement initiatives across development processes, testing, and documentation.
• Stay current with emerging technologies and recommend innovative solutions where appropriate.
• Communicate technical concepts clearly to both technical and non-technical stakeholders.

• Proven experience delivering software solutions across the full development life cycle, from design and development through to testing and deployment.
• Strong commercial experience with C# and .NET.
• Experience working with modern software architecture patterns and cloud-native applications.
• Knowledge of cloud platforms such as Azure, AWS, or GCP.
• Experience with Infrastructure as Code tooling, including Terraform.
• Familiarity with Docker, Kubernetes, microservices, serverless architectures, or similar modern development approaches.
• Experience with CI/CD pipelines, automated testing, and DevOps practices.
• Strong understanding of Agile delivery methodologies.
• Comfortable working as a polyglot engineer and learning new technologies where required.

Desirable

• Previous experience in a senior engineering role, leading or mentoring development teams.
• Experience with additional technologies such as Java, Python, React, Node.js, or other modern frameworks.
• Experience delivering projects within the public sector.
• Previous consultancy or client-facing experience.

You'll Bring

• A collaborative approach and the ability to work effectively within multidisciplinary teams.
• Strong problem-solving skills and attention to software quality.
• Excellent communication skills and confidence engaging with stakeholders at all levels.
• A passion for continuous learning and professional development.
• The ability to balance technical excellence with delivering real business value.

• 30 days holiday plus bank holidays
• 2 volunteer days annually
• Enhanced maternity and paternity leave
• Life assurance
• 5% employer pension contribution
• Health cash plan
• Personal learning and development budget
• Employee Assistance Programme
• Electric vehicle and cycle-to-work schemes
• Financial well being support
• Health assessments