Senior Software Engineer (Back-End)

TP ICAP Group Services Ltd; Belfast City District; On-site; GBP 80,000 - 110,000; Full time

Job summary

TP ICAP Group is seeking a Senior Software Engineer in Belfast to deliver business-critical software for the broking division. You will design, implement and support scalable, real-time systems in a cross-functional, Agile setting, with strong emphasis on automation and CI/CD.

You will mentor juniors and drive engineering excellence across the team. You will work on distributed services, relational databases, and WPF applications, leveraging AWS and AI-enabled tools to improve productivity while

Qualifications

• 5+ years of experience as a Senior Software Engineer in a delivery-focused environment.
• Strong expertise in .NET (C#) across modern Frameworks and Core.
• Proven experience with distributed, real-time systems and scalable components.
• Relational databases design and optimisation (e.g. MS SQL Server, MySQL).
• WPF application development experience.
• Hands-on with event-driven and asynchronous messaging architectures.
• Cloud platforms experience (AWS) including deployment of services.
• Strong CI/CD, version control, and package management practices.
• Familiarity with Agile methods and cross-geo collaboration.
• Awareness of AI capabilities and responsible use within governance.

Responsibilities

• Collaborate with Architects to design and deliver solutions aligned with IT strategy.
• Own design and delivery of key features with quality and timeliness.
• Partner with QA to ensure robust testing and high-quality releases.
• Champion engineering best practices including code reviews and tests.
• Leverage AI-enabled tools to enhance productivity and quality within governance constraints.
• Contribute to technology selection and methodology improvements.
• Design solutions meeting performance, scalability, and resilience goals.
• Mentor junior engineers and foster a collaborative team environment.
• Communicate progress, risks, and dependencies early to minimise delivery impact.

Skills

C#/.NET

Distributed systems

AWS

CI/CD

SQL databases

WPF

AI tooling

Tools

GitHub/GitLab

Copilot

Job description

About TP ICAP Group

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

• 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

• 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.

Location

UK - City Quays - Belfast

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.

Work with us

Joining TP ICAP puts you at the heart of markets that matter. You’ll have the freedom to innovate and act on your initiative. We’ll train you and build your abilities in your specialist area, so that you can become an expert in your field. And all within a connected network that’s there to set you up for success.

More about us

TP ICAP Group is a collection of premium brands each with a distinct, client‑focused offering. Underpinning and connecting these client‑facing brands is the financial security, operational strength and know‑how we have as a Group. Connections are at the heart of what we do. We combine our people’s know‑how with the latest technology to improve price discovery, trade execution and liquidity flow. Connections create strength. Through them, we help our clients to manage risk, realise investment strategies and expand the scope for growth. And connections act as a catalyst. Sparking richer solutions for our clients to break new ground, modernising markets for future performance, and creating dynamic careers for our people. Our capacity to connect builds trust, supports communities and gives us the power to anticipate and respond to change, whatever direction the world takes. It’s what makes TP ICAP a mainstay in the global markets, now and in the future. TP ICAP. We connect.