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Senior Agentic Platform Engineer
Contract type
Ongoing
Work mode
Remote
Experience
Senior · 5+ years
Job description
Senior Agentic Platform Engineer responsible for technical ownership of key components of Liz Agent, Seedtag's AI agent platform, ensuring scalability, reliability, and seamless integration across teams.
At a glance
- Work mode
- Remote
What you'll do
- Design, build, and maintain the core Liz Agent runtime, including agent execution, context management, and event streaming
- Develop MCP tool servers, APIs, and authentication and policy services to enable secure agent access to internal data and capabilities
- Enhance agent capabilities through multi-model routing, memory, durable execution, and LLM frameworks
- Ensure platform stability, performance, and production debugging through monitoring, tracing, and evaluation tools
- Define scalable APIs, service patterns, CI/CD pipelines, and cloud-native deployment standards that enable teams to build agents independently
- Implement robust security controls, prompt-injection protection, automated evaluations, and regression testing
- Drive architectural decisions, mentor engineers, and collaborate with Data, ML, Platform, and Product teams
What we're looking for
- 5+ years of experience building and maintaining production backend systems
- Strong Python expertise, including APIs, asynchronous programming, testing, and clean architecture
- Hands-on experience developing LLM applications or AI agents in production
- Solid understanding of event-driven architectures, microservices, Kubernetes, and cloud infrastructure
- Experience with LLMOps, observability, CI/CD, and production troubleshooting
- Knowledge of AI security, including authentication, access controls, and prompt-injection protection
- Proven ability to lead technical decisions, mentor engineers, and work autonomously in a collaborative environment
Your team
tech team
Benefits
- Flexible work model with 100% remote or hybrid options
- Continuous learning through a learning platform and optional language classes
- A supportive, trust-based culture that values well-being
- Team activities, offsites, and opportunities to connect beyond work
- Home office setup budget up to €1,000
- Paid trips to our HQ in Madrid
- MacBook Pro M3
Apply
About Seedtag
The leading Neuro-Contextual Advertising Company
Seedtag combines 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. Its proprietary AI, Liz, enables brands to connect with audiences across the open web and Connected TV without cookies or user tracking.
Mission
To transform advertising by proving that effectiveness and user privacy can truly coexist.
Key facts
- 500+ Seedtaggers
- 2014
- Madrid
- Neuro-Contextual Advertising
- Founded in 2014 by two ex-Googlers
- 500+ Seedtaggers in 17 countries
- Backed by €250M in funding
- Operates as a global ad-tech leader
- Proprietary AI named Liz
What they value
- Outcome over Output
- Failure Is Allowed, Learning Is a Must
- We Are All Scouts
- We Are Data-Driven