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AI Automation Engineer

leadtech Spain


No Relocation

Posted: May 15, 2026

Job Description

We are looking for an analytical, automation-driven, and technically versatile professional who thrives at the intersection of AI systems, workflow automation, and customer operations. The AI Automation Engineer combines deep technical expertise in LLM-powered agents and REST API integration with a clear understanding of customer service workflows — building intelligent systems that transform how support operates at scale.

The ideal candidate moves fluidly between designing a multi-agent architecture, building an N8N automation workflow, iterating on an LLM prompt, and integrating elements like API calls in data pipelines — all while keeping the end-user experience and operational excellence at heart. They take full ownership of projects, document as they go, and know how to unblock themselves.

MAIN RESPONSIBILITIES:

AI Agent & Automation Development

  • Design and build multi-agent AI systems integrating LLMs for end-to-end customer-facing workflows: email triage, refund processing, escalation logic, voice bot interactions.
  • Develop and maintain N8N automation workflows. Mid knowledge of python and javascript are required for code node scripting.
  • Integrate voice AI platforms (e.g. Retell AI, ElevenLabs, ConnexAI, Vapi, BlindAI, etc.) with custom prompt logic for call bot behaviour, customer handling, and multi-step flows.
  • Classify and prioritize automation use cases based on business impact, technical complexity, and urgency.
  • Ensure every automated workflow reflects high-quality communication standards, SLA adherence, tone consistency, and operational resilience.

API Integration & Technical Analysis

  • Define, document, and test REST APIs for integration with CRMs, helpdesk platforms (Freshdesk), and internal systems across multiple product versions.
  • Perform initial technical assessments of integration issues by reviewing API responses, logs, configurations, and system outputs to detect errors or inconsistencies.
  • Build and manage comprehensive API test suites in Postman and N8N, covering edge cases and structured regression scenarios.
  • Collaborate with Development, Product, and QA teams to reproduce, diagnose, and escalate complex technical issues efficiently and with complete context.
  • Participate in regular syncs with technical leads to identify recurring automation gaps and drive process improvements.

LLM Prompt Engineering & Structured Outputs

  • Craft and iterate on LLM prompts for structured output generation — including JSON schema enforcement, multi-category classification, sentiment analysis, and application reference extraction.
  • Debug and improve AI pipeline outputs, addressing inconsistencies in model responses.
  • Apply knowledge of AI delegation and orchestration patterns to design reliable, scalable agent workflows.

Process & Knowledge Improvement

  • Identify recurring workflow gaps or automation opportunities and propose preventive or optimisation actions.
  • Contribute to internal technical documentation, API specs, runbooks, and workflow guides to improve team efficiency and knowledge sharing.
  • Support onboarding and upskilling of new team members on automation tools, AI systems, and integration patterns.
  • Collaborate with cross-functional teams on initiatives that enhance the customer experience and streamline operational workflows.

We are looking for an analytical, automation-driven, and technically versatile professional who thrives at the intersection of AI systems, workflow automation, and customer operations. The AI Automation Engineer combines deep technical expertise in LLM...

Education & Experience

  • Minimum 2 years of experience in AI automation engineering, backend integration, or technical roles in digital or SaaS environments.
  • Proven experience building and maintaining automation workflows in N8N or equivalent platforms (Zapier, Make, etc.).
  • Hands-on experience working with REST APIs — design, integration, testing, and documentation. Building APIs is a plus.

Nice to have: Background in Customer Service or Support operations is a plus, providing valuable context for automation design.

Technical Knowledge

  • Deep understanding of REST API design principles — HTTP semantics (GET, POST, PUT, PATCH), status codes, request/response structuring, and versioning.
  • Proficiency with N8N: webhook debugging, dynamic base URL configuration and AI node integration.
  • Experience with ZenDesk, HelpScout, Freshdesk or LiveAgent CRM platforms, and customer support tooling for API integration.
  • Strong expertise in prompt engineering and Generative AI (LLMs), including developer-level experience with Claude (Sonnet, Opus), GPT, and similar models.
  • Proficiency with Postman for API testing, test suite management, and environment configuration.
  • Familiarity with voice AI platforms such as Vapi, Bland AI, ElevenLabs, ConnexAI, Retell AI or equivalent for call AI Agent development.
  • Solid understanding of JSON data structures, API response parsing, and structured output validation.
  • Working knowledge of JavaScript and Python.

Nice to have: Familiarity with multi-agent orchestration frameworks (LangGraph, CrewAI, AutoGen) or academic interest in AI delegation patterns.

Skills

  • Strong analytical and problem-solving abilities, with a structured, detail-oriented approach to debugging automation pipelines and integration issues.
  • Excellent written and verbal communication skills in English (advanced level, interviews will be made in full English); Spanish is a plus but not mandatory.
  • Proven ability to work autonomously while maintaining close collaboration with cross-functional teams — technical leads, product managers, and support operations.
  • Organised, accountable, and adaptable — able to manage multiple parallel automation projects effectively in a fast-paced environment.
  • Curious and self-driven, with a genuine interest in pushing the boundaries of what AI systems can automate.

Additional Content

We are looking for an analytical, automation-driven, and technically versatile professional who thrives at the intersection of AI systems, workflow automation, and customer operations. The AI Automation Engineer combines deep technical expertise in LLM-powered agents and REST API integration with a clear understanding of customer service workflows — building intelligent systems that transform how support operates at scale.

The ideal candidate moves fluidly between designing a multi-agent architecture, building an N8N automation workflow, iterating on an LLM prompt, and integrating elements like API calls in data pipelines — all while keeping the end-user experience and operational excellence at heart. They take full ownership of projects, document as they go, and know how to unblock themselves.

MAIN RESPONSIBILITIES:

AI Agent & Automation Development

  • Design and build multi-agent AI systems integrating LLMs for end-to-end customer-facing workflows: email triage, refund processing, escalation logic, voice bot interactions.
  • Develop and maintain N8N automation workflows. Mid knowledge of python and javascript are required for code node scripting.
  • Integrate voice AI platforms (e.g. Retell AI, ElevenLabs, ConnexAI, Vapi, BlindAI, etc.) with custom prompt logic for call bot behaviour, customer handling, and multi-step flows.
  • Classify and prioritize automation use cases based on business impact, technical complexity, and urgency.
  • Ensure every automated workflow reflects high-quality communication standards, SLA adherence, tone consistency, and operational resilience.

API Integration & Technical Analysis

  • Define, document, and test REST APIs for integration with CRMs, helpdesk platforms (Freshdesk), and internal systems across multiple product versions.
  • Perform initial technical assessments of integration issues by reviewing API responses, logs, configurations, and system outputs to detect errors or inconsistencies.
  • Build and manage comprehensive API test suites in Postman and N8N, covering edge cases and structured regression scenarios.
  • Collaborate with Development, Product, and QA teams to reproduce, diagnose, and escalate complex technical issues efficiently and with complete context.
  • Participate in regular syncs with technical leads to identify recurring automation gaps and drive process improvements.

LLM Prompt Engineering & Structured Outputs

  • Craft and iterate on LLM prompts for structured output generation — including JSON schema enforcement, multi-category classification, sentiment analysis, and application reference extraction.
  • Debug and improve AI pipeline outputs, addressing inconsistencies in model responses.
  • Apply knowledge of AI delegation and orchestration patterns to design reliable, scalable agent workflows.

Process & Knowledge Improvement

  • Identify recurring workflow gaps or automation opportunities and propose preventive or optimisation actions.
  • Contribute to internal technical documentation, API specs, runbooks, and workflow guides to improve team efficiency and knowledge sharing.
  • Support onboarding and upskilling of new team members on automation tools, AI systems, and integration patterns.
  • Collaborate with cross-functional teams on initiatives that enhance the customer experience and streamline operational workflows.

We are looking for an analytical, automation-driven, and technically versatile professional who thrives at the intersection of AI systems, workflow automation, and customer operations. The AI Automation Engineer combines deep technical expertise in LLM...

Education & Experience

  • Minimum 2 years of experience in AI automation engineering, backend integration, or technical roles in digital or SaaS environments.
  • Proven experience building and maintaining automation workflows in N8N or equivalent platforms (Zapier, Make, etc.).
  • Hands-on experience working with REST APIs — design, integration, testing, and documentation. Building APIs is a plus.

Nice to have: Background in Customer Service or Support operations is a plus, providing valuable context for automation design.

Technical Knowledge

  • Deep understanding of REST API design principles — HTTP semantics (GET, POST, PUT, PATCH), status codes, request/response structuring, and versioning.
  • Proficiency with N8N: webhook debugging, dynamic base URL configuration and AI node integration.
  • Experience with ZenDesk, HelpScout, Freshdesk or LiveAgent CRM platforms, and customer support tooling for API integration.
  • Strong expertise in prompt engineering and Generative AI (LLMs), including developer-level experience with Claude (Sonnet, Opus), GPT, and similar models.
  • Proficiency with Postman for API testing, test suite management, and environment configuration.
  • Familiarity with voice AI platforms such as Vapi, Bland AI, ElevenLabs, ConnexAI, Retell AI or equivalent for call AI Agent development.
  • Solid understanding of JSON data structures, API response parsing, and structured output validation.
  • Working knowledge of JavaScript and Python.

Nice to have: Familiarity with multi-agent orchestration frameworks (LangGraph, CrewAI, AutoGen) or academic interest in AI delegation patterns.

Skills

  • Strong analytical and problem-solving abilities, with a structured, detail-oriented approach to debugging automation pipelines and integration issues.
  • Excellent written and verbal communication skills in English (advanced level, interviews will be made in full English); Spanish is a plus but not mandatory.
  • Proven ability to work autonomously while maintaining close collaboration with cross-functional teams — technical leads, product managers, and support operations.
  • Organised, accountable, and adaptable — able to manage multiple parallel automation projects effectively in a fast-paced environment.
  • Curious and self-driven, with a genuine interest in pushing the boundaries of what AI systems can automate.