Senior Software Engineer

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Full job description

Seedtag is hiring a Senior Software Engineer to build backend systems for neuro-contextual advertising at scale. The role involves designing and maintaining high-throughput, low-latency services in Golang, integrating AI and ML models including LLM APIs, and developing scalable APIs and data pipelines for contextual data across OpenWeb, Connected TV, and in-app environments. The engineer will collaborate with Data Scientists, AI teams, and Product Managers to deliver impactful solutions. Required skills include strong Golang experience, knowledge of distributed systems, AI technologies, cloud infrastructure, observability, and Infrastructure as Code. Experience with Python, Node.js, TypeScript, and AdTech (RTB, OpenRTB, CTV) is a plus. The position offers flexible remote or hybrid work options with contracts available in multiple European countries. Benefits include a home office budget, paid trips to HQ in Madrid, a MacBook Pro M3, continuous learning opportunities, and a supportive culture.