We are looking for a Senior Agentic Engineer who will be able to work with different modernization projects. Responsibilities
* Launch modernization toolset.
* Customize and adjust prompts.
* Troubleshoot, debug, and resolve prompt issues.
* Collaborate with modernization team members to align with project goals and deliver high-quality solutions. Skills Must have
* Daily work with coding agents (Claude Code, Cursor, Codex or similar) as your main way of writing code, not an experiment.
* Understanding of how LLM agents work: context, tools, planning, subagents, typical failure modes.
* Ability to review agent output quickly and critically, catching errors and hallucinations.
* 5+ years of professional software development as a full stack developer, with systems taken to production and supported there.
* Relational databases and SQL; understanding of graph data models (Neo4j) and vector databases.
* Docker, Kubernetes, Helm: you deploy and debug them yourself.
* Testing as a habit: unit and integration tests, Test containers or similar.
* Understanding of TDD aspects.
* Owning an area on your own,



from an unclear problem statement to production, without someone else breaking it into tasks.
* Willingness to make decisions with incomplete information and to own the outcome.
* Ability to get up to speed quickly in unfamiliar code, technology or business domains.
* Ability to explain a decision and its limits in writing and in person. Nice to have
* Experience with LLM provider APIs (Anthropic, OpenAI, Bedrock) or a gateway such as LiteLLM.
* R&D;

experience:
hypotheses, prototypes, experiments and data-driven decisions on problems with no known answer.
* Mainframe: COBOL, CICS, JCL, DB2, IMS, PL/I, HLASM, CA Gen, z/TPF; 3270 and z/OSMF.
* Experience building evals for non-deterministic systems: regression suites, metrics, comparison of models and prompts.
* Knowledge of threats to agents and the code they write: prompt injection, secret leakage, excessive permissions, poisoned dependencies and MCP servers (OWASP Top 10 for Agentic Applications).

📌 Senior Agentic Engineer (Ceuta)
🏢 Luxoft
📍 Ceuta