Senior C++ Software Engineer

Railz

Railz

Software Engineering

Ariana, Tunisia

Posted on Apr 28, 2026

Position Type :

Full time

Type Of Hire :

Experienced (relevant combo of work and education)

Education Desired :

Bachelor of Computer Engineering

We are FIS. Our technology powers the world’s economy and our teams bring innovation to life. We champion diversity to deliver the best products and solutions for our colleagues, clients and communities. If you’re ready to start learning, growing and making an impact with a career in fintech, we’d like to know: Are you FIS?

About the team:

The Gateways Team is acting as a Global Team responsible for Production Environments Availability and Compliance across all Environments.

The team is also responsible of managing and leading clients into production environment, and drive internal implementation projects, support and documentation.

What you will be doing:

You will work within a Global Team to ensure Production Environments Availability and Compliance across all Environments

You will define effective monitoring and alerts systems across platforms and ensure regular tuning and review.

Additionally, you will manage application releases into all Production Environments according to the Change Management process

  • Analyze & solve reported issues on developments, provide guidance to business analysts

  • Ensure proper product quality, by providing adequate unit tests, documentation & training material on own developed features

  • Working closely with the Operation teams

  • Design and develop new software applications and maintain existing software applications

  • Perform advanced C/C++ programming (real-time/low-latency systems, design patterns, templates, multithreading, string manipulation, memory management, and sockets)

What you bring:

  • 7+ years of experience with C/C+

  • Previous experience working in a scrum team

  • Strong understanding of C++ templates and basics of C++ metaprogramming

  • Good understanding of at least one of the cross-platform build tools for C++ (bjam, CMake).

  • Excellent debugging, analysis and code development skills

  • Strong coding and documentation practices

  • A team player with good communication skills

  • Basic understanding of financial products

  • Java and scripting experience is a plus

What we offer you:

  • Working in an innovative and flexible environment within an established global company.

  • Comprehensive onboarding process.

  • A good work-life balance.

  • Competitive salary, including private health insurance for employees and their families, group life insurance, and a 5% pension plan.

  • On the job coaching and support

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Sourcing Model

Recruitment at FIS works primarily on a direct sourcing model; a relatively small portion of our hiring is through recruitment agencies. FIS does not accept resumes from recruitment agencies which are not on the preferred supplier list and is not responsible for any related fees for resumes submitted to job postings, our employees, or any other part of our company.

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