Back-End Engineer

Fifth Door; San Francisco (CA); On-site; USD 100,000 - 130,000; Full time

Benefits offered by this job

Competitive salary and meaningful equity

Health, dental, and vision coverage

Flexible work hours and unlimited vacation policy

Collaborative team environment

Job summary

Fifth Door in San Francisco is seeking a skilled Back-End Engineer to develop and maintain their AI-powered game engine. This role is critical for enhancing user experiences through innovative technology.

The ideal candidate has over 3 years of experience, strong proficiencies in backend development, and a passion for AI and gaming. Fifth Door offers competitive salary, benefits, and a collaborative work environment.

Qualifications

• 3+ years of experience as a backend or full stack engineer.
• Strong understanding of backend development concepts.
• Experience working in an agile development environment.

Responsibilities

• Help architect, develop, and maintain the backend for the AI-powered game engine.
• Collaborate with cross-functional teams to design scalable systems.
• Optimize applications for maximum speed and performance.

Skills

Backend or full stack engineering

Expert proficiency in Ruby, Typescript, Python, or Golang

Understanding of API development

Working with SQL and NoSQL databases

Agile development

Using AI tools in development workflows

Tools

Modern build pipelines

Job description

About Us

Fifth Door unlocks the power of imagination by making it easy for anyone to create, share, and play turn-based games anywhere, with anyone. We exist to inspire connection, creativity, and community through the limitless joy of games.

Create. Play. Anywhere.

About the Role

We are seeking a Back-End Engineer who is passionate about delivering outstanding user experiences that delight our users. This is an opportunity to join a fast-moving, ambitious team where your work will have real impact from day one.

Responsibilities

• Help architect, develop, and maintain the backend for our AI-powered game engine and web applications.
• Collaborate with cross-functional teams to design scalable and secure systems.
• Optimize applications for maximum speed, performance, and scalability.
• Write clean, maintainable, and well-tested code.
• Identify and troubleshoot back-end performance issues.
• Stay current with trends and emerging technologies, bringing ideas back to the team.

Qualifications

Must-Have:

• 3+ years of experience as a backend or full stack engineer or similar role.
• Expert proficiency in a programming language used on the backend, such as Ruby, Typescript, Python, or Golang
• Strong understanding of backend development concepts (e.g. API development, structuring applications, databases, workflows)
• Experience working with databases, both SQL and NoSQL
• Familiarity with modern build pipelines and tools
• Strong interest in AI technologies or experience integrating AI into a product
• Experience working in an agile development environment
• Proficiency using AI tools in development workflows

Nice-to-Have:

• Some familiarity with front-end technologies and working with Typescript and React is a plus.
• Passion for gaming, creative tools, or AI applications.
• Experience with AI prompt engineering.

Benefits

• Competitive salary and meaningful equity.
• Health, dental, and vision coverage.
• Flexible work hours and unlimited vacation policy.
• A collaborative, supportive team environment.
• Opportunity to shape product direction and culture early.