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EPAM Systems

Senior .NET Developer (16-month contract)

On site

Belfast, United kingdom

Senior

Freelance

09-03-2026

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Skills

Problem Solving Java JavaScript C# MySQL Risk Management Attention to detail Architecture Azure react AWS Agile SDLC Microservices

Job Specifications

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.

 

 

As a Senior Software Engineer, you will be part of a talented team delivering business-critical software for the internal broking division and its external customer base. You will work within an Agile environment, from design through to implementation, with a strong focus on Continuous Improvement whilst working collaboratively as part of a self-organising, cross-functional team. There will be a focus on continuous integration and deployment. The role involves a desktop client written in C# using WPF, the back end is written in Java and runs in a Wildfly application server and is hosted in AWS using EC2 components.

 

Responsibilities

Work closely with Solution Architects and Principal Engineers to build solutions that align to the IT strategy/vision
Provide support and mentoring to other members of the team
Take ownership of, and be accountable for, the delivery and quality of engineering and solutions, ensuring they meet business requirements, adhere to best practices, and are delivered on time and within scope
Seek to continuously improve, experimenting with technologies and methodologies to improve delivery, and guarantee the best solution and approach
Communicate effectively on progress and ensure impediments are raised early to minimise impact on the delivery

Requirements

Demonstrable experience designing, developing and maintaining distributed applications with C#
Experience in relational database design and optimization (MSSQL, MySQL, etc.)
Experience in the deployment and management of cloud (AWS, Azure, etc.) assets
Appreciation of the full SDLC, proactive involvement in shaping the delivery prior and during development, through QA phase, and post-release support
Pragmatic and delivery-focused, evaluating/challenging designs and approaches to achieve the best outcome for the project, capable of working on multiple tasks simultaneously and managing deadlines
Excellent attention to detail, highly organised with a proactive and independent approach to problem solving and innovative solutions, using POC(s) to validate approaches
Experience in building scalable and maintainable automated testing solutions for complex systems

Nice to have

Proficient in WPF application development
Experience of financial/trading platforms and knowledge of financial markets
Knowledge of FIX protocol and ability to handle FIX interactions
Experience with AWS services
Experience with Java, JavaScript or React
Experience with serverless architecture and microservices
Experience with TDD, BDD or similar approaches

 

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

About the Company

Since 1993, EPAM Systems, Inc. (NYSE: EPAM) has used its software engineering expertise to become a leading global provider of digital engineering, cloud and AI-enabled transformation services, and a leading business and experience consulting partner for global enterprises and ambitious startups. We address our clients’ transformation challenges by fusing EPAM Continuum’s integrated strategy, experience and technology consulting with our 30+ years of engineering execution to speed our clients’ time to market and drive greate... Know more