S
Agentic Platform Engineer
Contract type
Ongoing
Work mode
Remote
Experience
Mid-level · 3+ years
Job description
Build and scale Liz Agent, Seedtag's AI agent platform, as an Agentic Platform Engineer in the tech team. The role focuses on reliability, security, and seamless integration across teams.
At a glance
- Work mode
- Remote
What you'll do
- Build and maintain the core Liz Agent runtime, including agent execution, context management, and event streaming
- Develop MCP tool servers, APIs, and integrations that enable secure access to internal data and services
- Improve agent functionality through memory, multi-model routing, durable execution, and LLM frameworks
- Monitor platform performance, troubleshoot production issues, and improve tracing and evaluation capabilities
- Contribute to APIs, service templates, CI/CD pipelines, and cloud-native deployments that enable teams to build agents independently
- Implement security best practices, automated evaluations, and regression testing to ensure reliable agent behaviour
- Take responsibility for features from development to deployment and monitoring, collaborating with Data, ML, Platform, and Product teams
What we're looking for
- 3+ years of experience building and maintaining backend systems in production
- Strong Python expertise, including APIs, asynchronous programming, testing, and clean architecture
- Hands-on experience developing LLM applications or AI agents, including tool calling, structured outputs, and evaluations
- Solid understanding of event-driven architectures, microservices, Kubernetes, and cloud infrastructure
- Experience with LLMOps, observability, CI/CD, and production troubleshooting
- Knowledge of AI security practices, including authentication, access controls, and prompt-injection protection
- Ability to own features end to end, work autonomously, and collaborate effectively with cross-functional teams
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
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
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