Senior Game Client Developer

Push Gaming is a dynamic and innovative game development studio specialising in creating top-quality, mobile-optimised online casino games. With a passion for gaming and a commitment to pushing boundaries, we are dedicated to delivering exceptional experiences to players worldwide.

We are looking to hire a Senior Game Client Developer to join our talented team. You will be a key player in the development and delivery of our industry-leading online slot games, taking ownership of complex game features and development initiatives.

Location: Hybrid in UK (London) or Poland (Warsaw).
Salary: Competitive, depending on experience.

What you'll be doing:

• Development of games in TypeScript and PixiJS for mobile, tablet, and desktop browsers, ensuring high performance and a seamless user experience across all devices.
• Providing technical expertise, conducting code reviews, and fostering a collaborative, high-performing environment.
• Driving architectural and technical decisions for the client-side game architecture, ensuring scalability, maintainability, and quality of the codebase.
• Implementing complex game logic, including reel mechanics and special features for new slot titles.
• Collaborating closely with Game Mathematicians, Designers, QA Engineers, and Backend Developers to accurately translate game specifications and art assets into a functional and engaging product.
• Optimising game performance for various browsers and devices, focusing on memory management, frame rate stability, and fast loading times.
• Integrating with the backend platform using REST APIs, managing game state, and handling secure transactions/data exchange.
• Mentoring junior and mid-level developers, helping them to improve their technical skills and understand best practices in game development.
• Contributing to the continuous improvement of our development processes, tools, and best practices.
• Debugging and resolving complex issues reported internally or live from production environments.

What you’ll bring to the role:

• Experience in a similar level role is required. You might be an existing Senior/Principal looking for a new challenge, or a high performing Mid-Level Developer looking for a step up into a Senior position.
• You will need a strong grounding and background in software development - whether that's from iGaming, video games, or elsewhere.
• Proven ability in driving technical projects to completion.
• Ability to learn quickly and adapt to new technologies.
• Deep understanding of object-oriented programming (OOP) principles and software architecture.
• Expertise in Object-oriented JavaScript / TypeScript.
• Proficiency with software design patterns and their application in game development.
• Strong Math and Physics skills relevant to implementing game logic and animations (e.g., reel stops, trajectories).
• Experience with Pixi.js / Phaser.js or a similar HTML5 game engine.
• Experience with Spine or other 2D skeletal animation tools.
• Familiarity with the WebGL API and rendering pipelines is a plus.
• Strong knowledge of the HTML5 Canvas API.
• Proficiency with Git, distributed version control, and branching strategies.
• Experience working in an Agile Scrum environment.
• Familiarity with project management tools like Jira / ClickUp.
• Basic understanding of DOM, CSS for supporting UI/UX elements outside the canvas, if necessary.

Why join us?

It’s a really exciting time to join Push Gaming. We’re expanding our teams to deliver some stellar work.

We are passionate about creating premium quality games and will never compromise on this. The approach we take in building and strengthening our team is no different. We set out to attract and retain high performers and are committed to seeking like-minded individuals who share our vision for excellence and quality.

In turn, we offer all the tools and support to allow individuals to grow and thrive, while achieving both personal and company goals in an environment that’s built around trust, collaboration, transparency and accountability.