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Senior Software Engineer

Posted October 30, 2025
Full Time £65,000 - £85,000 / year

Job Overview

Senior Software Engineer

  • Location: London or Manchester. Remote working supported, around 10-20% on-site requirement with ability to commute into either Manchester or London office as necessary for collaboration, monthly in-person days, and quarterly department days.
  • Full-time or Part-time (part time and flexible hours/working options available. Please include in your application if you are interested in flexible hours) 
  • Expected Start Date: ASAP 
  • Salary Range: We are offering up to £85,000 for this role, depending on experience.

About Us
Spektrix is a growing collection of creative problem solvers focused around the arts and technology whose mission is to help arts organisations be more successful. We’re doing this through a combination of cloud-based software and consultative customer support that empowers arts organisations to grow revenue, increase efficiency, and build stronger relationships with audiences. We are always looking for new ways to approach problems, share knowledge, and better serve our customers. You’d be joining a team of over 260, based across our New York, London and Manchester offices and working with over 700 arts organisations in North America and the UK.

The role
We are looking for Senior Software Engineer's for one of our delivery teams who operate and maintain our platform in addition to building and maintaining product functionality.  

This role is responsible for the technical delivery of the team's work, ensuring that solutions are high quality and aligned with the department’s practices and principles.  There is an element of reactive support involved, responding to operational incidents inside working hours.

Our cloud native approach means using Azure PaaS solutions where possible to deliver value to our clients. Our technical strategy is to invest in simplifying the development and deployment of our applications and move towards a service oriented architecture to allow us to scale and continue to  operate a reliable platform that our clients and third party developers can build their businesses on.

Our organisation embeds Extreme Programming at the core of our practices. We have invested in the latest AI tooling which we are using in accordance with our existing development principles, focusing on high quality code, fast feedback and continuous integration. 

The ideal candidate will be experienced in C#/.NET, Microsoft SQL Server, SaaS operations, agile delivery, and test-driven development. They will be excited about joining a culture of collaboration where they share ideas, knowledge, and skills with their colleagues.  They will be interested in building and operating the web services and infrastructure that make up the Spektrix platform, which includes working with .NET Framework, Webforms, MVC, as well as modern .NET (8+). They will be interested in database design and implementation with a curiosity to investigate and improve database operations using tools such as SQL Server Management Studio and Azure Database Watcher.


Key Responsibilities

A Day In The Life Of…
  • Our engineers have a flexible start time, so may well get some work in before a morning standup to review work in progress.
  • Pairing with colleagues, you will work on tickets on the team’s Kanban board. This will include activities such as discovery, investigation and spikes, writing tickets, implementation, testing, documentation, build, and release.
  • If an incident occurs within your team’s area of ownership, you may be one of the responders who will work to resolve it; this is done in close collaboration with customer-facing teams.
  • While many of our services are deployed when changes are made, we operate a release daily for the core of our product. Each team takes their turn; sometimes, it will be your turn to release to production.
  • Every two weeks, we have a retrospective to highlight any problems and continuously improve our ways of working.
  • Every two weeks, we have an Learning & Development day, where you can work on relevant skills and professional development.

Key Requirements

Candidates must:
  • Be able to communicate clearly and collaborate with others using these working practices:
    • Pair programming / Extreme programming.
    • Kanban.
    • Test Driven Development.
    • Continuous Integration.
  • Have experience building and maintaining web applications in production environments.
    • Common architectural patterns (e.g. layered, hexagonal).
    • Databases (Including concepts like indexes, views and transaction scopes).
    • Performance and monitoring.
    • Security practices (e.g. understanding of OWASP Top 10).
  • Be comfortable safely refactoring legacy code.
  • Have experience designing databases and improving query performance
  • Be able to work alongside client-facing support and product owners to analyse business requirements.
  • Be keen to learn new technologies and skills.
  • Be receptive to feedback and be able to give constructive feedback.
  • Be keen to engage with and continuously improve our core practices and principles; this includes highly collaborative team principles such as knowledge sharing and open communication.

Technologies
Experience of our tech stack is important to this role.  You must have experience with these technologies:
  • C# (.NET and .NET Framework, ASP.NET)
  • Microsoft SQL Server
Our broader technology stack also includes:
  • Azure Cloud (DevOps, Compute, Storage, SQL PaaS, etc.)
  • Terraform
  • PowerShell

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