Senior Unity Game Systems & UI Engineer

Job DescriptionJob DescriptionLevel up your career with Koin Games!
Koin Games is redefining web3 gaming by creating engaging, innovative experiences that combine cutting-edge entertainment software with next- digital asset ownership.
 
The Role
Koin Games is looking for a highly skilled Senior Unity Game Systems & UI Engineer with a strong portfolio of published titles. In this remote role, you will play a key part in shaping the future of gaming by designing and implementing core metagame systems and functional UIs for features such as Deck Editing, Card Fusion, Store, and Battle Pass. You'll collaborate with Technical Artists to transform functional prototypes into polished, production-ready experiences that surprise and delight players. If you have experience developing AAA or AA-quality Unity games, this is your opportunity to join a passionate and collaborative team on an exciting journey at the forefront of gaming innovation.
 
Responsibilities

• Partner with designers to plan, implement, and iterate on engaging gameplay systems.
• Develop robust and scalable metagame logic for complex features with precision and efficiency.
• Create functional and intuitive UIs, ensuring smooth handoff to Technical Artists for refinement and polish.
• Collaborate with engineers to solve challenges, conduct code reviews, and address bugs efficiently.
• Mentor and inspire junior engineers, promoting growth and fostering technical excellence.
• Uphold industry standards for performance, quality, and scalability across all systems.
• Contribute to improving codebase organization, quality, and automation processes.

 Qualifications

• 6+ years of professional game software engineering experience.
• 5+ years of Unity development experience using C#.
• Proven track record of shipping multiple games on desktop or mobile platforms.
•  Hands-on experience implementing metagame systems in past projects (e.g., progression systems, shops, or card editors).
• Demonstrated skill in creating functional and user-friendly UIs, with a passion for UI development.
•  Experience working on AAA or AA-quality games, ideally for PC or mobile.
• Ability to thrive in a remote work environment with excellent time management and communication skills.

 
Bonus Points for any of these:

•  Familiarity with gaming backends like Beamable or similar technologies.
•  Expertise in designing and refining UI frameworks, systems, and high-quality polish.
• Strong knowledge of performance optimization for mobile and desktop platforms.

Interview Overview:Below you'll find an outline of the interview plan for this role. Please note that while this is what we expect the process to look like; we may ask you for supplemental information or require an additional step before making a final decision.

• 30 min interview with our Talent Acquisition Lead
• 60 min interview with the Hiring Manager
• 60 min interview with the team
• Test
• Final interview with the Executive Team
• References calls & a background check

The Legal Bits:In Compliance with local US law, we are disclosing compensation for this role. The range listed is just one component  of Koin’s total compensation package, which may also include bonuses and LTI or other program specific awards. The disclosed range estimate has not been adjusted for geographic differentials.

• We offer competitive pay based on market standards. The base salary for this role is between $100,000 to $150,000, depending on skills and experience. Individual compensation decisions are based on a number of factors, including experience level, skillset, and balancing internal equity relative to peers at the company. We expect the majority of the candidates who are offered roles at our company to fall throughout the range based on these factors.
• This role is full-time, exempt and will be fully remote
• The ability to work core hours on Pacific time is required
• Global, non-US candidates will be considered only on a contract basis only

Working at Koin Games, Inc.

Our entire team is working remotely.

We offer competitive salaries, a flexible paid time off policy, and 10 paid company holidays. We also offer a generous slate of benefit options, including medical, dental, vision, life, 401k, and HSA. Employees are eligible for these benefit options on the first day of the month after being hired!

Career descriptions are not designed to cover or contain a comprehensive listing of activities, duties, or responsibilities that are required of the employee.

We’re proud to be an Equal Opportunity Employer.

We are committed to providing equal employment opportunities for all employees and applicants. We are also committed to providing employees with a work environment free of illegal discrimination and harassment.

All employment decisions are based on business needs, career requirements, and individual qualifications. No applicant or employee will be discriminated against because of their ; ancestry; citizenship; ; marital or parental status; registered domestic partner status; ; , childbirth, breastfeeding, or related medical condition; (including hair textures and styles); height; weight; ; dress practice; grooming practice; ; ; genetic information; genetic characteristics; ; expression; transgender status; military and veterans’ status; HIV/AIDS status; physical or mental or medical condition unrelated to the person’s ability to perform the career; or any other consideration made unlawful by federal, state or local laws, or the perception that anyone has any of those characteristics or is associated with a person who has or is perceived as having any of those characteristics. See more details on your right to work here.

Note to Recruiters and Placement Agencies: We do not accept unsolicited agency resumes. Unsolicited resumes received will be considered our property and will be processed accordingly.

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