Senior C++ Software Engineer (low latency trading)

Luxoft Poland; Kraków; On-site; PLN 120,000 - 160,000; Full time

Benefits offered by this job

Private medical care

Dental care

Life insurance

Well-being program

Internal mobility

Job summary

Luxoft Poland is seeking an experienced software engineer to design, develop, and enhance global client connectivity trading systems. You will drive architectural decisions and implement high-performance, low-latency solutions for a multi-regional trading environment.

The role requires 5–7 years in C++ within financial services, strong Linux skills, and experience with client connectivity and the FIX protocol.

Qualifications

• 5–7 years of hands-on C++ development, including multithreading, STL, templates, sockets, 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.
• 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.

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

C++ development

Linux

FIX protocol

Distributed systems

Equity trading

Communication

Client connectivity

Java

L3 support

Job description

Private Medical & Dental care & Life Insurance (covered by us on Employment contract )

MyBenefit program (sports card, well-being program etc.) (covered by us on Employment contract )

Internal Mobility program - possibility of rotation between projects, locations, accounts

… and many more!

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.

• 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.

Mandatory Skills Description:

• 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.
• 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.