Senior Software Engineer, AI
New
J
JustworksHR Technology
SpainFull-TimeSenior
Salary111,000 - 143,000 EUR per year
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Job Details
- Experience
- 5+ years
- Required Skills
- AWSPythonSQLKubernetesRuby on RailsGo
Requirements
- 5+ years of backend engineering experience building and operating production systems
- Hands-on experience with LLMs and AI agents (orchestration, RAG, tool/function calling, or similar)
- Strong API design and system integration skills
- Product-minded: questions requirements and contributes to product decisions, not just execution
- Proven ownership of complex projects in ambiguous, early-stage environments
- Experience in a fast-paced, early-stage environment
- Pragmatic approach balancing quality with speed
Responsibilities
- Design, build, and own core components of the agent platform, from the orchestration layer to the tool integrations connecting it to internal systems.
- Build and evolve the capabilities layer: APIs, data access patterns, and service integrations for agents to execute operational workflows.
- Architect the knowledge and memory infrastructure, allowing agents to retrieve the data and act across our systems.
- Design and implement the trust and safety framework, including audit trails, human-in-the-loop controls, and guardrails for safe and auditable AI-driven operations.
- Contribute to agent evaluation and testing infrastructure, defining how we measure accuracy, reliability, and regression across agent behaviors.
- Partner directly with Operations to understand workflows, identify automation opportunities, and translate process knowledge into agent capabilities.
- Mentor other engineers on the team as it grows.
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