AI Automation Engineer
leadtech • Spain
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.
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.
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.