SQL Developer

About The Role

We are currently seeking multiple Senior .Net Developers to join a prestigious London-based financial services client. This role involves working on a long-term, business-critical data-oriented project that requires advanced technical skills and a strategic mindset. The successful candidates will be instrumental in developing and optimizing complex data-heavy applications, ensuring high performance, scalability, and security. The position offers an excellent opportunity to work within a dynamic team environment, leveraging cutting‑edge technologies, and contributing to impactful financial solutions.

The role is hybrid, based in London, with flexible working arrangements to support work‑life balance and productivity.

• Extensive experience in C# .Net development, particularly on data‑intensive projects.
• Proven expertise in SQL development, including database modelling, performance tuning, and optimisation.
• Solid understanding of application programming for data-heavy applications on SQL Server, utilising stored procedures and tSQL.
• Experience with cloud platforms, preferably AWS, to support scalable and resilient applications.
• Good knowledge of AI concepts and technologies is desirable but not mandatory.
• Strong problem‑solving skills and the ability to work effectively within a collaborative team environment.
• Bachelor's degree in Computer Science, Information Technology, or a related field is preferred.

• Designing, developing, and maintaining robust, scalable, and high-performance data-heavy applications using C# and .Net frameworks.
• Building and optimisation of complex SQL queries, stored procedures, and database schemas to enhance application performance.
• Collaborating with cross‑functional teams to understand business requirements and translate them into technical solutions.
• Implementing best practices for application security, data integrity, and compliance standards.
• Performing performance tuning and troubleshooting to resolve issues and improve system efficiency.
• Participating in code reviews, mentoring junior developers, and contributing to continuous improvement initiatives.
• Working with cloud services, particularly AWS, to deploy, manage, and monitor applications in a cloud environment.
• Staying updated with the latest industry trends, tools, and technologies to ensure the team remains innovative and competitive.

• Initial contract duration until the end of the year with potential extensions based on project needs and performance.
• Competitive daily rate of up to 850 GBP via umbrella company arrangements.
• Hybrid working model based in London, providing flexibility and a healthy work‑life balance.
• Exposure to cutting‑edge financial technologies and data‑driven solutions.
• Opportunity to work within a collaborative and innovative team environment.
• Professional development opportunities through exposure to new tools, methodologies, and industry standards.

Hays Technology is committed to fostering an inclusive environment and is proud to be an equal opportunity employer. We believe in diversity and are dedicated to providing equal employment opportunities regardless of race, gender, age, religion, sexual orientation, disability, or any other protected characteristic. We promote a workplace culture that values individual differences and ensures all employees and applicants are treated with respect and fairness throughout the recruitment process and beyond.