Senior C++ Software Engineer (low latency trading)

Luxoft; Wrocław; On-site; PLN 180,000 - 260,000; Full time

Job summary

Luxoft is seeking an experienced C++ developer to join a global client connectivity trading systems project, including FIX protocol and low-latency order handling. The role focuses on multithreaded, high-performance platforms in Linux/Unix environments and requires collaboration with global analysts, developers, and business stakeholders.

You will contribute to architectural decisions, improve performance and reliability, support modernization efforts, and help drive a DevOps–lean delivery

Qualifications

• 5–7 years of hands-on C++ development experience.
• Experience in Linux/Unix environments.
• Finance/trading domain experience with FIX.
• Designing high-performance distributed systems.
• Strong communication with IT and business teams.

Responsibilities

• Design, develop, and enhance global client connectivity trading systems.
• Contribute to architectural decisions for complex challenges.
• Develop functionality to support client requirements and regulatory changes.
• Improve performance, reliability, and maintainability.
• Support modernization and DevOps adoption (CI/CD).
• Collaborate with analysts, developers, and business stakeholders globally.
• Participate in configuration management, releases, and post-implementation support.

Skills

C++ development

Multithreading

STL

Socket programming

Algorithms

Linux/Unix

Financial trading

FIX protocol

Job description

Project description

The project focuses on global client connectivity trading systems, including A4, A4FIX, FIXAJ, and BlueDirect. The team is undertaking a multi-year initiative to modernize existing connectivity platforms, enhance system performance, introduce new functionality, and address evolving market regulatory requirements. The project operates in a global environment, bringing together technical and business stakeholders to solve complex challenges and make architectural decisions.

Responsibilities

• Design, develop, and enhance global client connectivity trading systems.
• Contribute to architectural decisions and solutions for complex technical challenges.
• Develop functionality to support client requirements and market regulatory changes.
• Improve system performance, reliability, and maintainability.
• Support the modernization of existing connectivity platforms.
• Help evolve the delivery ecosystem toward a DevOps approach, continuous integration, and continuous delivery.
• Collaborate closely with analysts, developers, and business stakeholders across global teams.
• Participate in configuration management, releases, and post-implementation support.

SKILLS

Must have

• 5–7 years of hands-on C++ development experience, including multithreading, data structures, STL, casting, templates, pointers, socket programming, and algorithms.
• Strong programming experience in Linux/Unix environments.
• Proven development experience within the financial services/trading domain, including order management systems, the FIX protocol, and order-state handling.
• Experience designing and developing high-performance, highly available, high-throughput, low-latency, high-capacity, transaction-oriented distributed systems.
• Strong understanding of equity trading environments, ideally within a multi-regional or global setting.
• Excellent communication skills, with the ability to explain complex functional and non-functional concepts clearly to both IT and business stakeholders.

Nice to have

• Previous experience developing or supporting client connectivity systems, preferably within a trading environment.
• Experience with Java, particularly Core Java, Collections, and Reflection.
• Experience providing Level 3 (L3) development support in demanding, production-critical environments.