Senior .NET Developer with SQL and Application Support

You will be the first point of contact for application issues, working directly with end users to diagnose and resolve technical problems, and validating development changes before they reach production. The role combines hands-on support work with strong SQL and .NET skills.

The project is a new squad within the client’s technology department, responsible for supporting the internal applications that front-office and back-office teams rely on every day. These include trade order management and reconciliation systems. The squad is the first point of contact for application issues and works closely with end users and developers to keep these systems stable, monitored and well documented.

• Act as the first point of contact for application-related issues, working closely with end users to identify, diagnose and resolve technical problems.
• Support trade order management and reconciliation systems used by front-office and back-office teams.
• Monitor system performance and troubleshoot issues quickly.
• Support the set-up and maintenance of application environments.
• Administer and maintain existing and new SFTP connections, including IP whitelists, SSH keys and PGP encryption.
• Debug ETL processes related to .NET applications and investigate data issues using SQL.
• Validate development changes and take part in testing and quality assurance before release to production.
• Contribute to the internal knowledge base and train users on how to use the applications.

• 5+ years of application support experience within financial services, including front-office trading systems and back-office operations.
• Bachelor’s degree in a related field.
• Advanced SQL, including query optimisation, debugging and schema design (joins, functions, procedures, triggers, CTEs).
• Solid hands-on .NET experience, including debugging ETL processes.
• Experience setting up and maintaining SFTP connections, managing IP whitelists and SSH keys, and performing PGP file encryption and decryption.
• Experience with scripting languages such as Python.
• Good understanding of financial products such as fixed income, equities, options and FX.
• Strong verbal and written English, with the ability to work effectively with end users and remote, cross-functional teams.

• Experience with job scheduling tools such as ActiveBatch or Tidal.
• Prior buy-side experience.
• Experience supporting trade order management and reconciliation systems.
• Experience contributing to testing and quality assurance initiatives.
• Experience writing knowledge-base content and training end users.