Senior Software Engineer / Tech Lead (AI)

Role overview Lead hands-on engineering for a seller platform that lists and synchronizes products across online marketplaces. The work combines backend development, production AI features, integrations, and technical direction for a small product team. The role is focused on coding and product decisions rather than people management.

Responsibilities - Design and ship AI features for product listings, descriptions, pricing insights, translation, and image improvement. - Build AI workflows with attention to output quality, speed, reliability, and operating cost. - Develop an MCP server and API capabilities that let AI agents interact with platform tools and data. - Improve the platform and its integrations with external marketplaces and services. - Own features from design through production, making technical decisions with product partners. - Evaluate customer use and feedback to refine shipped AI capabilities.

Requirements - Senior-level software engineering experience, particularly in backend development. - Experience building and releasing LLM-powered features using model APIs in production. - Strong experience integrating third-party APIs, including relevant patterns such as OAuth, webhooks, rate limits, or data synchronization. - Ability to take technical ownership from initial design through launch. - Comfort remaining hands-on while helping guide a small engineering team’s technical choices. - Ability to collaborate remotely with colleagues working across Eastern European time zones.

Nice to have - Experience developing an MCP server or a comparable integration for AI agents. - Experience with C#/.NET, SQL Server, or MongoDB.

Benefits and work setup - Contract role with remote collaboration across Eastern European time zones.