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# C# Developer

- **Company:** Cox powered by Atrium
- **Location:** Cheshire, CT, United States
- **Contract:** Temporary contract
- **Skills:** Application Programming Interfaces (APIs), Application Lifecycle Management, C Sharp (Programming Language), Databases, Data Mining, Database Development, Python (Programming Language), SQL Stored Procedures, SQL Databases, Systems Integration, Scripting, Enterprise Software Applications, Software Application Programming, Information Technology, Enterprise Integration, Data Management, Api Design
- **Published:** August 26, 2026
- **Apply:** https://computerjobs.com/us/en/mob/job/673FA5354F6678DC6C

## About the Role

* 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., * 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.

## Description

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., * 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 life cycle management.


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