Remote .NET Developer for Billing Systems Modernisation

Corecom Consulting; York and North Yorkshire; On-site; GBP 24,000 - 40,000; Full time

Job summary

Corecom Consulting is seeking a Systems Developer to join its UK-based team. This remote-first role focuses on supporting and modernising enterprise billing systems that handle large data volumes, with a view to reducing manual steps and increasing automation.

The role suits a junior to early mid-level .NET Developer with strong attention to detail. The position offers remote-first work with an office in North Yorkshire for occasional collaboration; Yorkshire-based candidates are strongly

Qualifications

• 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.
• 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.

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.

Skills

.NET

C#

SQL

Excel

Data-heavy systems

Billing/telecoms exposure

Legacy systems

Problem solving

Job description

Corecom Consulting is seeking a Systems Developer to join its UK-based team. This remote-first role focuses on supporting and modernising enterprise billing systems that handle large data volumes, with a view to reducing manual steps and increasing automation.

The role suits a junior to early mid-level .NET Developer with strong attention to detail. The position offers remote-first work with an office in North Yorkshire for occasional collaboration; Yorkshire-based candidates are strongly