Senior Software Engineer

About Supporting Education Group (SEG)
We are Supporting Education Group - a family of education brands helping schools, educators, and learners achieve their full potential.
We:

• Equip educators with the skills, tools, and opportunities to teach effectively.
• Help schools deliver exceptional experiences for their students.
• Give parents the confidence and resources to support learning at home.

Our technology supports every step of a child's educational journey. We combine expert support, inspiring people, and cutting-edge tech to build brighter futures.

We're passionate about creating an environment where people can do their best work - one built on openness, fairness, inclusion, and respect.

The Role
As a Senior Software Engineer, you'll help design, build, and maintain the systems that power SEG's growing technology ecosystem. You'll work across a range of digital products and platforms - from modern microservices to legacy systems in transition - delivering clean, maintainable software that solves real problems.

You'll collaborate with internal and external teams, contribute to architectural discussions, and champion best practices in code quality, testing, and performance. This is a hands-on role with plenty of scope to influence design decisions and shape our technical direction.

⚙️ What You'll Do

• Write high-quality, maintainable code in .NET Core, C#, Angular, and Blazor.
• Architect and develop solutions running in Azure (including AKS, App Services, and Functions).
• Build and integrate microservices and message-based systems using RabbitMQ.
• Design and optimise SQL Server databases - advanced stored procedures, indexing, tuning.
• Participate in code reviews, mentoring, and knowledge sharing across teams.
• Manage BAU requests and 3rd-line triage - owning issues within your expertise.
• Collaborate with product managers, business partners, and offshore teams (Mindera) to deliver against commercial goals.
• Simplify existing systems and deliver reusable, scalable components.
• Contribute to ongoing modernisation of our applications and CI/CD pipelines (Azure DevOps, gated releases).

About You
You're a hands-on engineer who thrives on solving complex problems and delivering elegant, scalable solutions. You combine technical depth with a pragmatic, delivery-focused mindset.

You'll bring:

• 5+ years' commercial experience with .NET Core / C# / MVC.
• Strong front-end skills in Angular and/or Blazor.
• Advanced SQL Server knowledge (expert-level queries, performance optimisation).
• Experience with RabbitMQ or similar messaging technologies.
• Exposure to Azure, Kubernetes (AKS), and (CI/CD) DevOps pipelines.
• Understanding of microservices and distributed systems.
• Excellent problem-solving and communication skills.
• Demonstrate communication ability across technical & non-technical audiences.
• Competent using whatever technology is best suited to solving a problem. Enthusiasm for continuous learning.
• A self-starter attitude and sense of ownership - someone who takes pride in delivery and accountability.

You will need to already have the right to work in the UK, as we are not able to offer any sponsorship(s) for visa applicants.

What Success Looks Like

• Delivering value consistently and on time.
• Demonstrating ownership and initiative - taking projects from concept to completion.
• Contributing to architectural decisions and mentoring within the team.
• Helping modernise systems while improving throughput, performance, and reliability.

Why Join SEG

• Hybrid working, with collaboration being one of our values, we expect presence in our well-situated London Holborn office one day per week, to connect with our teams in person. 
• 28 days holiday and get an extra day for each year you stay with us, up to max 33 days PLUS bank holidays.
• Healthcare Plan once you've passed probation, which includes access to a private GP.
• From day 1, free life insurance covering up to x4 your salary.
• Employee and Employer Pension contributions after 3 months service.
• Volunteer days - 3 paid volunteer days a year, with 2 dedicated to Education
• Choice of flexible benefits after passing probation - includes buying extra holiday, dental, topping up your healthcare plan, bikes, gym membership, electric cars and give as you earn.