First Derivative is driven by people, data, and technology, unlocking the value of insight, hindsight, and foresight to drive organizations forward. Counting many of the worlds leading investment banks as clients, we help our clients navigate the data-driven, digital revolution that is transforming the financial services sector. Our global teams span across 15 offices serving clients across EMEA, North America and APAC.

As an EPAM Systems, Inc. (NYSE: EPAM) company, a leading global provider of digital platform engineering and development services, we deliver advanced financial services solutions by empowering operational insights, driving innovation, and enabling more effective risk management in an increasingly data-centric world. Together with EPAM, we combine deep industry expertise with cutting-edge technology to help clients stay ahead in a rapidly evolving financial landscape, offering comprehensive solutions that drive business transformation and sustainable growth.

We are looking for a skilled Senior C# Developer with expertise in SQL and AWS to join our Data Modernization team in Belfast. As part of this exciting project, you will work on developing scalable data pipelines and backend services to enable our data lake platform, supporting critical datasets like reference data, counterparty data, and instrument data.

This role offers a hybrid model, with 3 days per week working from the clients office in Belfast.

Responsibilities

• Develop, enhance, and maintain backend services and APIs using C#, SQL, and AWS-native technologies

• Work on ETL pipelines to integrate data from multiple sources into the AWS-based data lake

• Leverage AWS services such as Lambda, Glue, S3, and RDS to build and deploy scalable solutions

• Collaborate with business analysts to implement data workflows that align with financial services requirements

• Optimize the performance of data processing systems for low-latency and efficient querying

• Ensure cloud-based solutions are secure, reliable, and follow best practices

Requirements

• Strong experience (3+ years) in C# programming, including API development

• Proficiency in writing and optimizing SQL queries for complex datasets

• Hands-on experience with AWS services (e.g., S3, Glue, Lambda, RDS or DynamoDB)

• Strong understanding of data modeling principles and ETL processes

• Excellent problem-solving skills and attention to detail within large-scale data systems

Nice to have

• Experience working in financial services or familiarity with reference/counterparty/instrument data

We offer

• Private Healthcare Package

• Pension

• Employee Assistance Programme

• Enhanced Maternity policy

• Group Life Protection Benefit

• Give as You Earn

• Cycle to Work Scheme

• Employee Referral Bonus Scheme

• Diversity Networks

• Access to a range of skills and certifications