Senior C++ Software Engineer

IT Search; Belfast; Remote; GBP 60,000 - 90,000; Full time

Job summary

A leading company in the FinTech sector is seeking a Senior C++ Software Engineer to join its UK team. This role involves designing and developing secure, high-throughput systems for real-time global payments, with a strong emphasis on engineering best practices. The ideal candidate possesses deep expertise in modern C++ and is eager to contribute to impactful financial systems.

Qualifications

• Strong experience in modern C++ (C++11/14/17/20) in a production environment.
• Exposure to embedded systems or low-level systems development.
• Background in C programming.

Responsibilities

• Design and develop core backend components in modern C++.
• Ensure performance, scalability, and reliability in production.
• Work collaboratively on mission-critical financial systems.

Skills

C++

Multi-threaded systems

Performance optimization

Analytical skills

Job description

IT Search Belfast, Northern Ireland, United Kingdom

Senior C++ Software Engineer

IT Search Belfast, Northern Ireland, United Kingdom

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This range is provided by IT Search. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

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Principal Recruitment Consultant | HW, SW, Embedded | IT Search

Senior C++ Software Engineer

Global FinTech

Remote (NI & RoI)

Permanent | Full-time

Market based salary + bonus & excellent benefits package

IT Search is proud to partner with a global FinTech leader expanding its UK engineering presence.

We're looking for a Senior Software Engineer to join a growing team focused on building and maintaining secure, high-throughput systems enabling real-time global payments.

In this role, you’ll work on the design and development of core backend components in modern C++, collaborating with a high-calibre team to ensure performance, scalability, and reliability in a demanding production environment.

This is a product-driven role offering strong ownership and the opportunity to shape how mission-critical financial systems are developed. You’ll be working in a collaborative environment with a strong emphasis on engineering best practices and long-term maintainability.

Key Requirements:

• Strong experience in modern C++ (C++11/14/17/20) in a production environment
• Deep understanding of performance-optimized, multi-threaded systems
• Experience with design patterns, object-oriented design, and refactoring techniques
• Proficiency in version control, testing, and peer code review practices
• Comfortable working with APIs and structured data (e.g. JSON, XML)
• Strong analytical and problem-solving skills
• Exposure to embedded systems or low-level systems development
• Background in C programming, particularly for system-level code
• Experience working in Linux environments
• Knowledge of regulated or security-critical domains (e.g. finance, telecoms)

If you're an experienced C++ developer looking to work on systems that make a real global impact, apply via the link or contact Graeme King at IT Search for a confidential conversation.

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Information Technology and Engineering

• Industries

  IT Services and IT Consulting and Software Development

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