Senior Software Engineer (Back-End)

ICAP; Belfast City District; On-site; GBP 70,000 - 100,000; Full time

Job summary

TP ICAP in Belfast is seeking a Senior Software Engineer to deliver business-critical software for the broking division. You’ll work in an Agile, cross-functional team across design, implementation and post-release support, emphasising engineering excellence, CI/CD, and automation.

You’ll collaborate with architects, own features end-to-end, partner with QA, mentor juniors, and drive improvements while applying AI-enabled tooling responsibly within governance frameworks.

Qualifications

• 5+ years of experience as a Senior Software Engineer in a delivery-focused environment.
• Strong expertise in C#/.NET across modern Frameworks and Core.
• Experience building distributed, real-time systems and scalable components.
• Relational databases experience (SQL Server, MySQL) and schema design.
• Proficiency in WPF and event-driven/asynchronous messaging.
• Experience with cloud platforms (AWS) including deployment/management.
• Strong CI/CD, Git workflows, and package management.
• Familiar with Agile and cross-geo collaboration.
• Awareness of AI capabilities and governance in software.
• Proven ability to deliver PoCs and write maintainable code.

Responsibilities

• Collaborate with architects to design solutions aligned with IT strategy.
• Own design, development and delivery of key features with quality outcomes.
• Partner with QA to ensure robust testing and defect-free software.
• Champion best practices: unit testing, code reviews, maintainable design.
• Leverage AI-enabled tools to boost productivity and code quality.
• Evaluate and adopt technologies, tools, and methodologies.
• Design solutions meeting performance, scalability and resilience goals.
• Mentor junior team members and promote a collaborative environment.
• Communicate progress, risks and dependencies, escalating issues early.

Skills

5+ years

C# .NET

Distributed systems

SQL Server

WPF

CI/CD

AWS

Agile

AI in software

Education

Bachelor's degree in Computer Science

Tools

AWS

GitHub

Docker

Kubernetes

Job description

The TP ICAP Group is a world leading provider of market infrastructure.

Our purpose is to provide clients with access to global financial and commodities markets, improving price discovery, liquidity, and distribution of data, through responsible and innovative solutions.

Through our people and technology, we connect clients to superior liquidity and data solutions.

The Group is home to a stable of premium brands. Collectively, TP ICAP is the largest interdealer broker in the world by revenue, the number one Energy & Commodities broker in the world, the world’s leading provider of OTC data, and an award winning all-to-all trading platform.

Founded in London in 1866, the Group operates from more than 60 offices in 27 countries. We are 5,200 people strong. We work as one to achieve our vision of being the world’s most trusted, innovative, liquidity and data solutions specialist.

Role Overview

As a Senior Software Engineer at TP ICAP, you will play a key role in delivering business-critical software solutions supporting the internal broking division and its external client base.

You will operate within an Agile, cross-functional environment, contributing across the full software development lifecycle—from design through to implementation and post-release support. The role emphasises engineering excellence, continuous improvement, and scalable delivery, with a strong focus on automation, continuous integration, and deployment.

Role Responsibilities

• Collaborate with Architects and Principal Engineers to design and deliver solutions aligned with the broader IT strategy and architectural vision.

• Take ownership of the design, development, and delivery of key features, ensuring high-quality outcomes and timely completion.

• Partner closely with QA to ensure robust testing practices and the consistent delivery of high-quality, defect-free software.

• Champion engineering best practices, including unit testing, code reviews, and maintainable design principles.

• Leverage AI-enabled development tools (e.g. Copilot, code assistants, automation tooling) to enhance productivity, code quality, and delivery velocity—within enterprise risk and control frameworks.

• Contribute to continuous improvement by evaluating and adopting appropriate technologies, tools, and methodologies.

• Design and deliver solutions that meet both functional and non-functional requirements (e.g. performance, scalability, resilience).

• Support and mentor junior team members, fostering a collaborative and high-performing team environment.

• Proactively communicate progress, risks, and dependencies, escalating impediments early to minimise delivery impact.

Experience / Competences

Essential

• Extensive experience (5+ years) as a Senior Software Engineer within a complex, delivery-focused environment.

• Strong expertise in .NET (C#) across modern .NET Framework and .NET Core environments.

• Proven experience developing distributed, real-time systems and designing scalable system components.

• Solid experience with relational databases (e.g. MS SQL Server, MySQL), including schema design and optimisation.

• Proficiency in WPF application development.

• Hands-on experience with event-driven and asynchronous messaging architectures.

• Experience working with cloud platforms (preferably AWS), including deployment and management of cloud-based services.

• Strong understanding of CI/CD pipelines, version control (GitHub/GitLab), and package management.

• Working knowledge of Agile methodologies and collaborative delivery across geographically distributed teams.

• Demonstrable understanding of AI capabilities and limitations in software engineering, with the ability to apply these responsibly within enterprise governance frameworks.

• Strong problem-solving skills, with a proactive, detail-oriented, and delivery-focused mindset.

• Ability to critically evaluate and challenge design decisions to drive optimal technical outcomes.

• Experience delivering proofs of concept (POCs) to validate technical approaches.

• Competence in writing test tools, technical documentation, and supporting maintainable systems.

Desired

• Experience within financial services/trading platforms and understanding of financial markets.

• Knowledge of the FIX protocol and experience managing FIX connectivity.

• Exposure to Java and/or JavaScript.

• Deeper expertise in AWS services, including serverless architectures and microservices.

• Experience with TDD, BDD, or similar engineering practices for defining and validating requirements.

Band & Level

• Manager / 6

Company Statement

We know that the best innovation happens when diverse people with different perspectives and skills work together in an inclusive atmosphere. That’s why we’re building a culture where everyone plays a part in making people feel welcome, ready and willing to contribute. TP ICAP Accord - our Employee Network - is a central to this. As well as representing specific groups, TP ICAP Accord helps increase awareness, collaboration, shares best practice, and holds our firm to account for driving continuous cultural improvement.

Location

UK - City Quays - Belfast