About ION

We are a Software Product Company with a global footprint in the FinTech sector. With more than 10,000 professionals across 40+ offices worldwide, we provide solutions combining trading and workflow automation, market data, and advanced business intelligence.

We are building a new, high‑impact project within ION aimed at once again disrupting how financial market participants operate. To support this initiative, we are looking for a Backend Software Engineer (C/C++) to contribute to the design and development of complex, high‑performance systems. You will work within cross‑functional teams of engineers, designers, and product specialists, helping deliver scalable and reliable software.

Design, develop, and maintain backend software components using C/C++

Apply object‑oriented design principles and domain‑driven design in complex systems

Build scalable, concurrent, and asynchronous software solutions

Contribute to system architecture, network design patterns, and performance optimization

Write high‑quality, testable code using TDD / ATDD practices

Collaborate within Agile teams (Scrum, Kanban) across a global development environment

Use source control, CI/CD pipelines, and modern development tools to ensure software quality

Continuously improve software reliability, maintainability, and delivery processes

Degree in Computer Science or Computer Engineering

3+ years of experience developing backend software in C/C++

Strong knowledge of STL and/or Boost, object‑oriented design, and domain‑driven design

Experience with concurrent and asynchronous programming and networked systems

Hands‑on experience with TDD / ATDD and testing frameworks (GTest, CppUnit, UnitTest++)

Practical use of CI/CD tools and practices, including Jenkins

Experience with containerization, cloud, and development tools (Docker, AWS, VS Code or equivalent)

Proficient with source control systems (Git, Perforce, SVN)

Experience working in Agile environments (Scrum, Kanban)

Strong interest in complex systems and continuous learning

Valid EU work permit for non‑EU candidates

Fluency in English (B2)

Senior C++ Developer, Italy

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