Senior HTML5 Game Developer

About the role

You will complete our Game Development crew of 14 lovely and skilled people and report to the Team Lead Frontend Games. Your passion for online casino games combined with your technical knowledge allows us to bring the best slots to the market.

• Game Development & Implementation
  • Translate game design documents (GDD) into HTML5 game presentations.
  • Break down GDD features into a Work Breakdown Structure (WBS) and create JIRA tickets.
  • Ensure tasks are manageable within a maximum of one workweek and align with team estimates.
  • Implement game features and functionality using Type Script (latest standard).
  • Follow best practices, ensuring well-typed and well-documented code.
  • Use JavaScript (ECMAScript) only when necessary, documented with JSDoc.
• Version Control & Code Management
  • Work with Git (Git Lab as the central repository).
  • Commit code at least once per working day to feature branches.
  • Follow semantic commit conventions, including (JIRA or similair) ticket .
  • Submit merge requests (MR) when work is completed and defect‑free.
  • Address feedback from MR reviewers and escalate disputes to the Architect or Engineering Manager if needed.
  • Ensure code adheres to Secure Development Principles.
• Visual & Audio Effects Implementation
  • Integrate static art, animations (Spine), image sequences, and particles.
  • Use libraries like PIXI.js for optimal rendering performance.
  • Collaborate with Tech Art to optimize assets for efficient implementation.
• Code Quality & Optimization
  • Ensure clean, well‑documented, and tested code.
  • Use browser developer tools to track FPS, memory, CPU/GPU usage, and draw calls.
  • Prioritize and fix bugs with utmost urgency.
  • Maintain unit and integration test coverage, ensuring communicated line coverage is not reduced.
  • Remove dead code and optimize project assets.
• Game Code Building & Delivery
  • Utilize Webpack for efficient bundling, minification, and optimization.
  • Optimize images, text, and assets for a production‑ready build.
  • Understand and enhance Git Lab CI for efficient deployment.
  • Ensure games are optimized for HTTP/HTTP2/HTTP3, Web Sockets, and other network communications to enhance player experience.
• Collaboration & Development Process
  • Work closely with Game Producers, Art Directors, and QA to ensure smooth development.
  • Conduct game demos for Product Owners.
  • Address QA‑reported defects with highest urgency.
  • Follow structured development milestones:
    • Alpha – Game functions as per specification (even if assets are incomplete)
    • Beta – Full asset implementation; game ready for QA testing

• At least 3 years of Game Development experience and 5 years overall development
• Fluent in Type Script and JavaScript (ES6) and HTML5/CSS3
• Highly experienced with PixiJS, Phaser, or equivalent
• Complete fluency in English, written and spoken
• Strong communication and teamwork skills
• Experienced with Git, JIRA (or equivalent Issue / Project tracking software), and GSuite
• Attention to detail, problem‑solving, and multitasking skills
• Experience with Spine animations, including optimization

• Experience with WebGL or other graphics programming API.
• Casino slot player.
• Creativity.
• Background in statically typed languages.

• This full‑time position is on an indefinite freelance basis for contractors within the Central European Timezone ±2.

Founder led. Impact driven. Employee centric.

At Booming Games, we’re reshaping the iGaming world with our remote‑first approach. Our rhythm? Thrilling slot games with captivating features and stunning designs released every two weeks – no exceptions! Here, it’s all about co‑ownership and real growth. Dive into a diverse team where your input powers every game we craft!

• We’re a 100% remote‑first company, offering a best‑in‑class remote experience
• Competitive package
• Dog‑friendly offices in Berlin and Malta
• Family‑friendly policies
• Career growth opportunities
• Zestful working environment
• Knowledge sharing opportunities
• Dynamic culture surrounded by industry experts
• Company social events for team bonding

Recruiting Team