Programmer, AI & Behavior (Games) en Xsolla

Black Ember Games, an all-new development team within Xsolla, is looking for a Programmer for AI & Behavior to join our team building an asymmetrical multiplayer FPS using Unreal Engine5. Our small internal team operates with an indie mindset, fueled by our passion for games. We're a diverse,  lively group dedicated to exploring new ideas within genres we love to play. We enjoy a hybrid work model, collaborating in our central Berlin and Novi Sad offices. Full remote is a possibility. As a Programmer for AI & Behavior, you will work first hand on making our NPCs (a crucial element of our design) feel realistic, playing a crucial role in developing the feel of the game. We want our NPCs to feel like an extension of the player and to surprise them with their abilities.  As a team with an indie mindset, we are not adherent to a stringent hierarchy and set of processes… if you know a better way to do something, bring that to the table, discuss, and set a new direction in collaboration with design and tech leadership.

Responsibilities

Implement and iterate on gameplay and AI behavior features — including NPC logic, movement, and decision systems — in Unreal Engine 5.

 Integrate AI behaviors with core gameplay systems such as combat, navigation, perception, and interaction.

 Contribute to tool development or debug visualizations to assist in testing and tuning AI behaviors.

Collaborate closely with designers, animators, and artists to bring gameplay ideas to life and ensure AI behaviors align with design intent.

Write clean, maintainable C++ and Blueprint code, following established architecture and coding standards.

Debug and optimize AI and gameplay systems for performance and stability, identifying bottlenecks and proposing practical solutions.

Communicate effectively with your team — raise risks early, give feedback on design feasibility, and help ensure features ship on time and at high quality.

Particulate in code reviews, playtests, and QA sessions to help maintain consistency and polish across gameplay systems.

Requirement

3–5 years of professional game programming experience, with at least one shipped title or major update using Unreal Engine 4 or 5.

Proficient in C++ and comfortable working in both code and Blueprints for gameplay implementation and iteration.

Hands-on experience with Unreal’s AI systems — Behavior Trees, Blackboard, AI Controllers, Perception, and Navigation.

Understanding of common AI architectures: state machines, behavior trees, perception systems, and movement logic.

Solid understanding of 3D math and linear algebra, especially for movement, spatial reasoning, and targeting.

Performance-minded developer: able to identify inefficiencies, profile gameplay logic, and optimize where needed.

Comfortable with source control (Perforce) and collaborative workflows.

Strong communication skills and ability to work effectively across design, animation, and engineering teams.

Fluent English communication (written and verbal).

Exposure to AI debugging or visualization tools (EQS, gameplay debug panels, etc.).

Experience with Unreal Gameplay Ability System (GAS), MassEntity, or Chaos

Familiarity with multiplayer gameplay and replication.

Experience with live game updates or post-launch feature support.

Knowledge of build pipelines (Horde, Jenkins) and general packaging workflows.

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