Senior C# Developer - Data Integration & AWS

EPAM; Belfast; Hybrid; GBP 80,000 - 100,000; Full time

Job summary

A leading global technology firm based in Belfast is seeking a skilled Senior C# Developer to join their Data Modernization team. This role involves developing scalable data pipelines and backend services, leveraging SQL and AWS technologies. The position offers a hybrid work model, with 3 days in the office per week. Ideal candidates will have strong experience in C# and AWS services, along with excellent problem-solving skills.

Benefits

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 skills and certifications

Qualifications

• 3+ years experience in C# programming with API development.
• Proficient in optimizing SQL queries for complex datasets.
• Hands-on experience with AWS services (S3, Glue, Lambda, RDS).

Responsibilities

• Develop and maintain backend services and APIs using C#, SQL, and AWS.
• Work on ETL pipelines to integrate data into the AWS data lake.
• Optimize performance of data processing systems.

Skills

C# programming

SQL

AWS services

Data modeling

ETL processes

Problem-solving

Tools

AWS Lambda

AWS Glue

AWS S3

AWS RDS

Job description

Overview

This job is brought to you by Jobs/Redefined, the UK's leading over-50s age inclusive jobs board.

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 world's 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 client's 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