Senior Software Engineer

Job description

We are currently seeking an experienced Backend Software Engineer to join the Agency team at our Kraków Hub. Our ideal candidate is someone who thrives in a high-growth environment with rapidly evolving needs. This individual will contribute to our Agency platform — powering ActiveCampaign's partner and reseller ecosystem — working across multi-account management, partner tooling, and API services. The role spans our PHP backend and Python-based agentic AI workflows, with a strong emphasis on building AI-native capabilities into the Agency product experience. You don't have to check all the checkboxes in the job description. We're looking for driven and curious engineers who are open about learning new technologies and solving problems. What your day could consist of: Agency Platform & AI Development Building and enhancing features across the Agency platform including partner tooling, multi-account management, and API services in PHP Designing and implementing agentic AI workflows that automate and enhance partner and reseller experiences Integrating LLM-powered capabilities into core Agency features — from intelligent recommendations to automated partner operations Contributing to...