Senior Software Engineer

Job Title: Senior Software Engineer
Department: Technology
Location: Sheffield or London
Working Pattern: Hybrid, includes 3 days each week in the office
Contract Type: Full time, permanent
Salary: Up to £74,000 per annum

At Tes we are on a mission to power schools and enable great teaching worldwide, by delivering EdTech solutions that give educators the tools to succeed. From safeguarding and compliance to staff and pupil management, our innovative and flexible software and services help teachers and school leaders worldwide to provide the best education to millions of children.

With more than 13 million educators in our community, combined with our working relationships with 25,000 schools in over 100 countries, we have been making a difference for over 100 years.

Role overview
We are seeking a Senior Software Engineer to join our Technology team in either Sheffield or London, reporting to the Tech Lead. As we continue to evolve our engineering practices and modernise our product ecosystem, you will play a key role in designing, building, and delivering scalable, high‑quality software used by educators and schools around the world.

You will be working within an agile, collaborative environment that values transparency, continuous learning, and technical excellence. Our teams include Product Managers, Scrum Masters, QA Engineers, and fellow Software Engineers, all working together to build reliable, secure, and impactful solutions.

Key Responsibilities

Deliver high‑quality, scalable software using modern front‑end and back‑end frameworks
Lead by example in applying engineering best practices
Actively participate in agile ceremonies and contribute to continuous improvement
Conduct and guide high‑quality code reviews, including complex changes
Take ownership of deploying your code to all environments and releasing it to customers
Collaborate with QA Engineers to define and guide testing strategies (unit, integration, functional)
Monitor and proactively resolve system errors, improving observability and reliability
Mentor engineers across the team and contribute to knowledge‑sharing initiatives
Ensure secure coding practices and respond to security‑related issues
Communicate effectively with both technical and non‑technical stakeholders

What will you need to succeed?
Essential Skills

Proficiency in at least two of the following: JavaScript, Java, PHP, C#, or other .NET languages
Strong understanding of design patterns and hexagonal architecture
Hands-on experience building and consuming REST APIs and using API documentation tools
Solid knowledge of both relational and NoSQL databases
Excellent communication skills with the ability to clearly explain technical concepts
Proven experience mentoring or guiding other engineers

Desirable Skills

Experience working with microservices, Docker, and Kubernetes
Familiarity with CI/CD pipelines and delivery practices
Exposure to feature toggling, A/B testing, and release strategies
Understanding of security best practices and vulnerability identification
Experience contributing to architectural design and system-level thinking

What do you get in return?

25 days annual leave rising to 30
5% pension after probation
State of the art offices
Access to a range of benefits via My Benefits World
Free eye care cover
Life Assurance
Cycle to Work Scheme
EAP (Employee assistance programme)
Quarterly Tes Socials
Access to an extensive Learning and Development menu

Who are Tes?
Tes is a global Edtech leader, on a mission to empower schools and educators to deliver impactful, inspiring learning experiences worldwide. We understand the unique challenges faced by schools, and our ecosystem is specifically designed to address these needs head-on.

Our intuitive technology streamlines complex tasks, enhances learning experiences, and alleviates the administrative burdens that often overwhelm schools.

By working closely with schools, we provide up-to-date resources, expert guidance, and a technology ecosystem dedicated to innovation and excellence in education. Whether simplifying administrative workflows, creating dynamic classrooms, or advancing professional development, Tes is the trusted partner for schools worldwide.

Join the hundreds of schools already benefiting from the Tes ecosystem. Together, we empower educators to achieve more, ensuring every student thrives in a supportive, well-managed learning environment.

With Tes, excellence in education is not just a goal - it's a sustainable and rewarding reality. For more information about Tes, our products, and our team, visit: www.tes.com.