Software Engineer

C# Developer – Financial Services

Location: Cheshire (2 days per week onsite – mandatory)

Rate: £500 per day (Inside IR35)

Duration: Initial 12-month contract (extensions likely)

Atrium EMEA are supporting a world-leading IT services client in their search for an experienced C# Developer to join a major financial services programme based in Cheshire.

This role will suit an established C# Developer with strong recent experience working within enterprise-level banking or financial services organisations. You will be responsible for supporting, maintaining, and enhancing a suite of existing custom-built applications, whilst working closely with stakeholders to deliver ongoing improvements and technical solutions.

Candidates must be based within a commutable distance of Cheshire and willing to attend the office two days per week. Applications from candidates outside the local area will not be considered.

Key Responsibilities

• Support, maintain, and enhance existing custom-built C# applications.

• Design, develop, and implement new features and functionality.

• Troubleshoot application issues and provide ongoing production support.

• Investigate and analyse API outputs and integration requirements.

• Assess the feasibility of API-based data extraction and integration solutions.

• Develop and optimise SQL queries, stored procedures, and database solutions.

• Utilise Python for automation, scripting, and data-related tasks where required.

• Work closely with business and technical stakeholders to understand requirements and deliver solutions.

• Produce and maintain technical documentation.

• Contribute to continuous improvement initiatives and application lifecycle management.

Required Experience

• Strong commercial experience developing applications using C#.

• Advanced SQL development and database experience.

• Commercial experience with Python.

• Experience supporting and enhancing existing enterprise applications.

• Experience working with APIs, integrations, and data extraction solutions.

• Strong problem-solving and technical troubleshooting skills.

• Experience working within Agile delivery environments.

• Excellent communication and stakeholder management skills.

• Recent experience working within a banking or financial services environment.

Essential Requirements

• Recent banking or financial services experience.

• Experience working within enterprise-scale environments.

• Strong C#, SQL, and Python capabilities.

• Ability to work independently and take ownership of existing applications.

• Ability to commute to Cheshire two days per week.

• Candidates must already be based within a commutable distance of Cheshire. Relocators will not be considered.

Please note: Only candidates with recent financial services experience and the ability to attend the Cheshire office twice per week will be considered. These requirements are mandatory.