Senior Agentic Engineer

Project description

Modernization as a Service (MaaS) is a horizontal practice, supporting all business verticals in the company.

We are looking for a Senior Agentic Engineer who will be able to work with different modernization projects.

Responsibilities

• Launch modernization toolset
• Perform initial result validation
• 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

• AI agents:

• 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.

• Engineering background:

• 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, Testcontainers or similar.

• Understanding of TDD aspects.

• Soft skills:

• 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).

• Secure work with coding agents.

• Other

• Languages

• English: B2 Upper Intermediate

• Seniority

• Senior

• Remote

• Spain

• Note: This version excludes application forms, contact emails, and any sensitive consent language.