Unity Developer with Prompt Engineering skills

Do you have a passion for PC games? Are you skilled in C# and Unity? Do you have experience with LLM prompt engineering? Do you like challenges? Then join our GoodAI team, sister company of Keen Software House who has developed Space Engineers, the successful sandbox game that sold 5 million copies around the world!

You will have the opportunity to work on a novel game whose tech builds on Large Language Models (LLMs). Your work will focus on implementing game functionality powered by interactions with LLMs.


  • Implement new game features powered by Large Language Models – connect the game to external LLM APIs, finetune the prompts, perform literature research and implement promising techniques.
  • Work on game logic and AI
  • Perform code reviews, write documentation.
  • Present solutions.
  • Take part in team-wide meetings and discussions.
  • Work closely with other developers, QA engineers, game designers and artists.
  • Proactively help to clarify requirements when needed.
  • Share your knowledge with the rest of the team.


  • Good knowledge of prompt engineering techniques practically demonstrated on a finished project.
  • Very good programming skills (C#), with experience in game development. The candidate should demonstrate the ability to write clean, well-documented, and testable code.
  • Unity development experience.
  • Ability to keep up with the latest developments in LLM space, especially prompting techniques, tools, and relevant research. 
  • Experience collaborating with other developers: communication, version control, and issue tracking.
  • Ability to learn new concepts and skills rapidly, and look to understand things in an in-depth way.
  • Drive – you’re energetic, hard-working, and persevere through adversity until the job is done, and done well. You are motivated by getting results and always aim for excellence in what you do.
  • Communicative level of English – you will be part of an international team composed of members from all over the world.
  • Friendly personality, respectful approach.

Considered a plus

  • Experience with fine-tuning and deployment of DL models
  • Internal understanding of the transformer architecture
  • DevOps experience
  • Experience with any game development specialization (graphical programming, AI, networking, porting, …).
  • Experience with Unity UI Toolkit, Addressables system or the Unity Profiler.
  • Server backend development (RESTful APIs, Swagger, python).
  • Background or professional interest (coupled with good knowledge) in any subfield of AI, but especially Large Language Models.
  • University degree in a related field (e.g. Computer Science).
  • Experience with remote work in a distributed team.

Team Culture

  • Results-oriented: we measure ourselves only by our results.
  • No limits: we can achieve anything; we are pushing our limits in technology and art.
  • Integrity: we have the courage to do the right thing, regardless of the consequences and the inconvenience.
  • Extreme ownership: it does not matter if you are a leader or an individual contributor. Every team member accepts accountability and equal responsibility for our collaborative effort.
  • Excellence in execution: our teams aim for excellence in everything we do – we get what we tolerate.
  • Simplicity in design: less is better; avoid feature creep; simplicity is the ultimate sophistication.
  • Teamwork: we treat our colleagues with respect, supporting each other throughout to ensure we maximize the value for everyone while creating an atmosphere of trust.


  • Great team!
  • Effective development & processes not delayed by bureaucracy
  • Work on a product with an ambition for being novel
  • Opportunity to make a significant impact
  • Healthy work-life balance and five weeks of paid holidays
  • Unlimited sick days (we trust our people)
  • Unique working environment – Oranzerie
  • Remote collaboration is the norm – take home office anytime you want or work from another country
  • Relocation package
  • Competitive compensation
  • Stock options
  • Family-friendly
  • Team socialization – games, parties, outdoor activities, trips. Bring your family members!
  • Talent development and long career rewards – time dedicated for study.
  • Company-paid online and offline education courses, books and magazines, participation at industry conferences and workshops
  • Studio cafeteria with free coffee and healthy fruit days
  • Regular company lunches and outside grills

Important information: While this position is open to remote workers, please note that unfortunately we are unable to consider candidates from America and East Asia at this time due to the current distribution of our team.

Type: Full-time

Location: Prague, Czech Republic (remote work possible)

Info: Remote collaboration possible

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