Job Title: Systems Developer ( .NET – Billing Systems)
Location: Remote (UK) – Office based in North Yorkshire
Salary: Up to £40,000
About the Role
A well-established UK-based telecommunications services business is seeking a Systems Developer to join its development team. This role is focused on the support, enhancement, and modernisation of enterprise-level billing systems that process large volumes of critical data.
The successful candidate will help ensure existing billing processes run accurately and efficiently, while also contributing to the development of modern, automated systems designed to reduce manual intervention and improve reliability. This position would suit a Junior to early Mid-level .NET Developer with strong attention to detail and an interest in working on data-intensive, business‐critical systems.
The role is remote-first, however the business has an office in North Yorkshire, and candidates based in Yorkshire are strongly preferred for occasional collaboration and team engagement.
Key Responsibilities
* Ensure existing billing system processes run efficiently and accurately on a daily basis
* Work closely with the Lead Developer to design and implement modern replacements for legacy billing processes, increasing automation over time
* Support the development of tariffs and billing mechanics for new services as they are introduced
* Assist with bug fixing, system queries, and technical enhancements during ongoing system improvements
* Contribute to the modernisation of a suite of Windows-based internal CRM applications
* Support the investigation and resolution of internal billing queries and rate disputes
* Help schedule and manage daily and monthly billing processes, with a focus on long-term automation
Required Skills & Experience
* Commercial experience with .NET and C#
* Strong working knowledge of SQL databases
* Solid Excel skills, including formulas, filters, and data analysis
* Experience working with large datasets or data-heavy systems
* High attention to detail and a structured, analytical approach to problem solving
Desirable Experience
* Previous exposure to billing, invoicing, or telecoms systems
* Experience working with or modernising legacy systems
* Comfortable supporting systems where accuracy and data integrity are critical
Working Arrangement
* Remote-first role (UK-based)
* Office location in North Yorkshire
* Yorkshire-based candidates are strongly preferred
What's on Offer
* Salary up to £40,000, depending on experience
* Opportunity to work on mission-critical billing systems
* Hands-on involvement in system automation and modernisation projects
* Supportive team environment with experienced .NET developers