Senior C++ Software Engineer (Fully Remote, Poland) FinTech

Selby Jennings; Warszawa; On-site; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Remote-first

Job summary

Selby Jennings is hiring a C++ Software Engineer for a fully remote role based in Poland. You will join a highly technical team building high-performance trading infrastructure used by global banks and hedge funds.

You will develop and optimise low-latency C++ systems, build real-time data pipelines and APIs, and work on performance-critical components of the trading platform.

Qualifications

• Strong commercial experience in C++ (5+ years).
• Experience with APIs, distributed systems, or real-time data processing.
• Background in performance optimisation / low-latency systems.

Responsibilities

• Develop and optimise low-latency C++ systems.
• Build and enhance real-time data pipelines and APIs.
• Work on performance-critical components of trading infrastructure.

Skills

C++

APIs

Distributed systems

Real-time data

Low-latency

Job description

C++ Software Engineer (Fully Remote, Poland) FinTech - Trading Technology

Candidates must be Poland-based and eligible to work on a B2B contract.

A leading fintech firm is scaling its engineering team and hiring a C++ Software Engineer to build high-performance trading infrastructure used by global banks and hedge funds. This organisation develops low-latency trade routing and execution platforms, powering connectivity to major liquidity venues worldwide. Their systems operate in real-time environments, handling large volumes of market data with a strong focus on performance, reliability, and scalability.

The Role

You'll join a highly technical, international engineering team working on the core platform:

• Develop and optimise low-latency C++ systems
• Build and enhance real-time data pipelines and APIs
• Work on performance-critical components of trading infrastructure

Requirements

• Strong commercial experience in C++ (5+ years of professional experience)
• Experience with APIs, distributed systems, or real-time data processing
• Background in performance optimisation / low-latency systems
• Exposure to financial systems or trading environments is a plus, or experience with streaming / API-driven platforms
  

If you enjoy building high-performance systems in real-time environments, this is a strong opportunity to work on technically challenging problems at scale.