Senior Gameplay Programmer – Anti-Cheat – [Rainbow Six Siege]

Ubisoft Entertainment; Montreal; Hybrid; CAD 80,000 - 100,000; Full time

Job summary

A leading video game publisher is seeking a Senior Gameplay Programmer to join the Anti-Cheat team. The role involves integrating security measures into core gameplay systems to ensure a fair player experience. Candidates should have strong C++ skills, experience in gameplay programming, and the ability to collaborate with data scientists. The position supports a hybrid work model, offering flexibility while maintaining team connectivity.

Benefits

Hybrid work model

Flexible work-life balance

Qualifications

• Excellent C++ skills and experience with gameplay systems.
• Ability to analyze and prevent exploits.
• Experience in integrating ML models into games.

Responsibilities

• Integrate security checks into gameplay systems.
• Monitor telemetry for suspicious behaviors.
• Collaborate with QA to resolve security issues.

Skills

C++ programming

Gameplay Programming

Problem-solving

ML systems integration

Collaboration

Tools

Unreal Engine

Unity

Job description

Senior Gameplay Programmer – Anti-Cheat – [Rainbow Six Siege]

The Rainbow Six Siege Anti-Cheat team is looking for a talented and detail-oriented Gameplay Programmer to help us fulfill our mission: ensuring a fair and competitive environment for our community.
We focus on cheat prevention and detection through a dual approach: reducing cheat availability and deploying advanced detection systems.
You will work closely with our data scientists and ML engineers to integrate anti-cheat measures directly into core gameplay systems. Your role will be key in leveraging gameplay data and designing intelligent detection mechanisms, all while preserving the experience of legitimate players.

What you will do

• Integrate security checks into gameplay systems and logic.
• Connect internal and third-party anti-cheat tools to gameplay mechanics.
• Implement integrity checks and obfuscation on critical variables to reduce cheat availability and increase the operational cost for cheat developers.
• Monitor telemetry and logs to detect suspicious behaviors (e.g., speed hacks, wall hacks, other exploits).
• Fix exploits through updates to gameplay rules, edge‑case handling, or strengthened server‑side logic.
• Collaborate with the QA team to reproduce and resolve gameplay‑related security issues.
• Contribute to match replay systems (map geometry extraction, detailed kill information, etc.) for analysis.
• Develop and maintain automated pipelines processing raw replay files to feed our analytics and detection tools.
• Ensure that security measures remain invisible to players and do not degrade the gameplay experience.

Qualifications

• Excellent C++ skills: proven experience with C++ programming, strong understanding of gameplay systems, network synchronization, and data structures.
• Gameplay Programming experience: designing, implementing, and debugging core gameplay mechanics.
• Curiosity & problem‑solving: ability to analyze gameplay systems and think like a cheater to anticipate and prevent exploits.
• ML systems integration: prior experience integrating ML models or systems into a game or real‑time application.
• Collaboration & communication: ability to work effectively with cross‑disciplinary teams (data scientists, ML engineers, etc.).
• Bonus: experience with game engines (Unreal, Unity, or proprietary engines), anti‑cheat technologies, or network programming.

Assets

• Experience with FPS games.
• Cross‑platform experience (console or mobile).
• Familiarity with GAS and CMC.

What to send us

• Your resume detailing your background, skills, and relevant projects.
• (Optional) Examples or links to your gameplay work.

Additional Information

Ubisoft is a global leader in video games, with teams across the world creating original and memorable gaming experiences—from Assassin’s Creed to Rainbow Six, Just Dance, and many more. We believe that diverse perspectives help our teams and our players grow. If you’re passionate about innovation and want to push the boundaries of entertainment, join our adventure and help us create the unknown!

We use a hybrid work model that helps you stay connected with your team and aligned with company priorities, while giving you the flexibility to maintain a healthy work‑life balance. Please note that some roles are fully on‑site and not eligible for hybrid work.