PpWe’re looking for a Senior Software Engineer - AI Agent Platform to join our tech team and help build the future of neuro-contextual advertising at global scale. /p h3Who We Are /h3 pAt Seedtag, our mission is to transform advertising by proving that effectiveness and user privacy can truly coexist. /p pAs the leading Neuro-Contextual Advertising Company, we combine Artificial Intelligence, Natural Language Processing, Computer Vision, and neuroscience to understand not only what content is about, but how it makes people feel and what they intend to do next. /p pOur proprietary AI, Liz, enables brands to connect with audiences across the open web and Connected TV without cookies or user tracking. Founded in 2014 by two ex-Googlers, Seedtag has grown to 700+ Seedtaggers in 17 countries, backed by €250M in funding, and operates today as a global ad‑tech leader. /p pIf you enjoy solving complex engineering challenges and building AI‑driven systems at scale, you’ll feel right at home here. /p h3Your Challenge /h3 ul liDesign and build an enterprise‑grade AI agent platform that handles real workloads, real users, and real constraints. /li liOwn critical parts of the platform: agent orchestration, memory and context systems, tool integration layers, and external communication protocols. /li liSolve problems like managing conversation context at scale, coordinating multi‑agent workflows, optimising LLM interactions, and exposing agent capabilities through standard protocols. /li liMake architectural decisions that balance performance, maintainability and developer experience. /li liWork closely with data scientists and product teams to ship agent capabilities that drive business outcomes. /li /ul pThis space moves fast. Frameworks, protocols, and best practices evolve constantly. We build solid foundations but stay ready to adapt. You should be comfortable with change and eager to stay at the state of the art. /p h3Our Core Values /h3 pOutcome over Output. We measure success by impact and value, not by volume of features or lines of code. /p pFailure Is Allowed, Learning Is a Must. Experimentation is key to innovation. We test early, iterate often, and learn fast. /p pWe Are All Scouts. We take ownership and leave things better than we found them. /p pWe Are Data‑Driven. Data informs our decisions and helps us continuously improve our systems and results. /p h3Tech Stack /h3 pWe operate at large scale, supporting up to 120k requests per second, with ML models responding in under 10 milliseconds and processing 20 TB of data daily. /p h3Our Stack Includes /h3 ul liLanguages: Python, Go, TypeScript, Scala /li liCloud Infrastructure: Kubernetes, GCP, AWS /li liStreaming: Kafka, Kinesis /li liData: Datalakes, GCS, Redis, Druid, MongoDB /li liArchitecture: 100+ microservices, DevOps‑driven, continuous deployment /li /ul h3What You’ll Need To Succeed /h3 ul li5+ years building and operating backend systems in production, with strong distributed systems fundamentals. /li liProficiency in Python and ideally Go. You care about code quality and maintainability. /li liHands‑on experience building LLM‑based applications or AI agent systems using agent SDKs and frameworks (Pydantic AI, LangGraph, OpenAI Agents SDK, or similar). /li liExperience with Kubernetes, GCP or AWS, observability tools, CI/CD pipelines. /li liUnderstanding of agent patterns: tool calling, context management, and multi‑step workflows. /li liExperience working with AI‑assisted development tools. /li liStrong judgment and communication skills. You navigate ambiguity and make sound technical decisions. /li liTrack record of owning projects end‑to‑end in fast‑moving environments. /li /ul h3Why Join Seedtag /h3 ul liA key moment of growth with real ownership and global impact. /li liFlexible work model with 100% remote or hybrid options. (Remote contracts available in Spain, Italy, UK, Belgium, Netherlands, France, and Germany.) /li liContinuous learning through a learning platform and optional language classes. /li liA supportive, trust‑based culture that values well‑being. /li liTeam activities, offsites, and opportunities to connect beyond work. /li /ul h3Additional Perks /h3 ul liHome office setup budget up to €1,000 /li liPaid trips to our HQ in Madrid /li liMacBook Pro M3 /li /ul pReady to Join the Seedtag Adventure? At Seedtag, we create an environment where everyone can thrive. If you need accommodations during the hiring process, let us know and we’ll ensure a positive experience. /p pSend us your CV and let’s build the future of neuro-contextual advertising together. /p /p #J-18808-Ljbffr