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Senior Full-stack Engineer
Develop end-to-end features powering the next generation of AI roleplay.
Seoul
Engineering
Full-time
On-site
We’re looking for a Senior Full-stack Engineer to help us build the backbone of the next generation of interactive AI storytelling. At astrsk.ai, we’re creating powerful tools for immersive roleplay — blending performance, scalability, and creativity at the core.
As a Senior Full-stack Engineer, you’ll work across the stack — from backend APIs to sleek frontend interfaces. You’ll architect and deliver core features end-to-end, mentor team members, and help shape the technical foundation for our growing platform.
The role
You’ll own major features across our backend and frontend, driving architectural decisions and collaborating closely with design and product teams. Your work will directly impact how thousands of users experience AI-driven storytelling.
What you'll do
Architect, build, and scale robust backend systems and APIs
Develop elegant, performant, and accessible UIs using React
Collaborate with design and product teams to deliver end-to-end features
Optimize database queries and infrastructure for reliability and performance
Establish coding standards, CI/CD pipelines, and testing best practices
Mentor engineers and contribute to technical roadmap discussions
Required Skills
7+ years of experience in full-stack development
Proficiency in JavaScript/TypeScript, React, and PostgresDB
Strong understanding of frontend/backend architecture
Experience with cloud infrastructure (AWS, GCP, or similar)
Familiarity with modern CI/CD pipelines and testing frameworks
Strong product sense and ability to balance speed with scalability
Excellent collaboration and communication skills in English
Bonus Skills
Experience with AI products, roleplay, or creative tools
Familiarity with WebSockets, real-time APIs, or event-driven architecture
Contributions to open-source projects or personal development tools
What to expect in the first 6-12 months
Lead the development of key backend and frontend features
Improve performance and stability of our platform as we scale
Collaborate on roadmap planning and propose technical solutions
Help establish engineering best practices and mentor junior engineers
We want to hear from you
If you’re passionate about building scalable systems and elegant interfaces — and want to help define what interactive AI can become — apply now and join us in shaping the future.