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Software Engineer C++ / C#

Teciem · Paris, France · Posted Apr 09, 2026

Disclaimer As part of the transition following the sale by Finastra of the Teciem business, Finastra is supporting Teciem on a temporary basis by managing the endtoend recruitment process for this position, including advertising, candidate outreach, interviews and selection. While certain points of contact in the hiring process will be Finastra staff, the successful candidate will be employed within the Teciem business and will carry out their role solely for Teciem. The Work We Do Teciem designs, builds, and delivers treasury and capital markets software solutions for financial institutions worldwide. We serve banks of every size and geography, offering the right setup for the right need. Our solutions are designed to replace multiple disconnected systems with one complete, front-to-back platform, helping customers to capture trading and business opportunities quickly, clearly and with control. We cover the entire trading lifecycle, ensuring that everything - from execution to position keeping, to risk management runs smoothly. With decades of experience and one of the largest, most diverse client bases in the industry, we turn deep industry knowledge into software that covers most asset classes, meets complex real-world treasury and capital market's needs, and adapts as markets evolve. What will you contribute? Join our Decision Support Team as an Expert Software Engineer and play a pivotal role in empowering investment professionals through advanced simulation and order generation tools within our flagship Windows-based desktop platform, Fusion Invest. Your mission will be to improve, enhance and design functionalities to: Define and monitor investment objectives, Control exposures and propose hedging actions concerning various market parameters. From data models persistence, and exposure calculations to servers interactions and visual presentation of indicators and results, you will ensure the robustness, scalability, and clarity at every step of users journey. You are committed to continuously improving product quality by following best practices and using proven design patterns. Ideally, you are familiar with Test-Driven Development techniques (TDD) and have experience implementing and maintaining automated tests. You have a meticulous approach to performance optimization, including memory management and speed. You are also keen on delivering an engaging user experience that anticipates operational needs. You are autonomous and proactive, with a curiosity to understand the financial domain, ready to commit long-term, and motivated to work as part of a team in an international environment. Tech Stack Programming Languages: C++ (C++17 , C++20) , C# Tools: Visual Studio 2022, Visual Studio Code, GitHub (source control) Platform: Windows-based desktop application What Youll Do Develop and maintain software components using C++ /C# Enhance our portfolio management system and front office operational components. Troubleshoot and resolve complex software issues. What Were Looking For Professional software development experience with expert-level proficiency in C/C++ , C# Proven ability to solve complex technical challenges Experience in desktop application development Bonus Points For Experience with GitHub Familiarity with CI/CD pipelines PowerShell scripting knowledge Advanced usage of SQL (Oracle) Hands-on experience with asynchronous and multi-threaded processing of large-scale datasets Familiarity with DevExpress WinForms controls Some experience with MFC Financial literacy: a background on order management systems, trade/position/portfolio/fund management, risk exposure and hedging. Interest in generative AI technologies How We Work Agile methodology with three-week sprints Collaborative decision-making Cross-functional team structure No formal on-call schedule Diverse Minds, Shared Ambition At Teciem, we believe that our strength comes from the diversity of our people. Different perspectives, backgrounds, and experiences fuel our innovation and help us build solutions that truly make a difference in the world of financial technology. Were committed to creating a workplace where everyone feels respected, heard, and empowered to grow. Here, you can bring your whole self to work, contribute your unique ideas, and be part of a team driven by shared ambition. We welcome talent from all walks of life and encourage applications from individuals of all genders, races, ages, abilities, identities, and beliefs. Together, were shaping a culture where diversity isnt just celebrated its essential to our success.