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LABHOUSE

AI Engineer – Agents

LABHOUSE

. Design and build the agent architecture from the ground up .

Posted 11/11/2026full-timeBarcelona • SpainMid-LevelSeniorWebsite

Core Competencies

Role fit
Core Competencies

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Demonstrates expertise in designing and building agent architectures, with a strong focus on developing reliable AI systems and integrating advanced AI models and tools. Proven ability to manage projects from inception to production while ensuring quality and effective communication of technical decisions.

Highest-signal resume keywords
Agent Architecture DesignAI System EvaluationProduction System DevelopmentProject OwnershipAI Models Integration

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
Multi-Agent SystemsOrchestration DevelopmentContext ManagementHuman-In-The-Loop ControlsQuality MeasurementData-Driven ImprovementsAI Tools KnowledgeSubscription Apps ExperienceMobile Products ExperienceOpen-Source AI Contributions
Soft Skills
Clear CommunicationProblem-SolvingAnalytical SkillsAttention to DetailSelf-Driven Attitude

About the role

Key responsibilities & impact
  • Design and build the agent architecture from the ground up
  • Ship agentic features into Summary AI and Invoice Fly
  • Build multi-agent systems for millions of users
  • Develop orchestration, tool use, context management, evaluation, and human-in-the-loop controls
  • Set up evaluations to measure quality, detect failures, and guide improvements
  • Iterate based on real usage and data
  • Track current AI models, tools, and techniques and integrate suitable ones into products

Requirements

What you’ll need
  • 5+ years of experience building production systems
  • Experience building agents used by real people
  • Experience making AI agents reliable
  • Ability to own projects from a blank page through production and beyond
  • Ability to make architecture decisions independently
  • Knowledge of evaluating AI systems and using data to guide improvements
  • Up-to-date knowledge of AI models, tools, and techniques
  • Ability to ship quickly while maintaining quality
  • Clear communication of technical tradeoffs
  • Excellent problem-solving and analytical skills
  • Attention to detail and a product-first mindset
  • Self-driven, entrepreneurial attitude and ability to work autonomously
  • Excellent communication skills
  • Experience with subscription apps or mobile products (nice to have)
  • Contributions to open-source AI tooling (nice to have)

Benefits

Comp & perks
  • Remote work from anywhere in Spain
  • Flexible working hours
  • High-end equipment for your development
  • Permanent contract with competitive compensation
  • Opportunity to lead, grow, and take on big challenges
  • A young and top entrepreneurial team in a dynamic startup environment