Principal AI Engineer

We are the company behind CKEditor — an open-source rich text editor used by millions of people around the world. We are part of Tiugo Technologies, a family of API-first developer platforms (CKEditor, TinyMCE, ButterCMS, Uploadcare) focused on content creation and digital collaboration.

• 8+ years of experience in software engineering.
• Strong system design and backend engineering skills.
• Experience building and shipping AI / LLM-based solutions.
• Ability to move from problem definition to architecture to implementation.
• Experience with automation, workflows, or agent-like systems.
• Hands-on approach and willingness to write production code.
• Fluency in Polish and English (minimum C1 level).
• Strong engineering judgment (including knowing when not to use AI).
• Experience working across teams and influencing technical decisions.
• Curiosity, ownership, and interest in applying AI in practice.

• Solve high-impact problems across product and internal systems, identifying where AI or automation can create real value.
• Work closely with engineering, product, and business stakeholders to understand problems, clarify goals, and define the right approach.
• Design pragmatic, end-to-end solutions from architecture and technical plans to production-ready systems.
• Build systems involving LLMs, integrations, and multi-step or agentic workflows.
• Write production-quality code, build prototypes, and evolve them into robust, scalable solutions.
• Influence technical direction across teams, define best practices, and help others adopt AI effectively.