AI Automation Engineer

About the Role

We are seeking 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 will combine deep technical expertise in LLM-powered agents and REST API integration with a clear understanding of customer service workflows to build intelligent systems that transform support operations at scale. You will design multi-agent architectures, build N8N automation workflows, iterate on LLM prompts, and integrate various elements while prioritizing end-user experience and operational excellence. This role requires taking full ownership of projects, documenting processes, and proactively unblocking challenges.

Main Responsibilities

AI Agent & Automation Development

• Design and build multi-agent AI systems integrating LLMs for end-to-end customer-facing workflows (e.g., email triage, refund processing, escalation logic, voice bot interactions).
• Develop and maintain N8N automation workflows, utilizing Python and JavaScript for scripting.
• Integrate voice AI platforms (e.g., Retell AI, ElevenLabs, ConnexAI, Vapi) with custom prompt logic for call bot behavior and customer handling.
• Classify and prioritize automation use cases based on business impact, technical complexity, and urgency.
• Ensure all automated workflows meet high standards for communication, 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.
• Perform initial technical assessments of integration issues by reviewing API responses, logs, and configurations.
• Build and manage comprehensive API test suites in Postman and N8N.
• Collaborate with Development, Product, and QA teams to diagnose and escalate complex technical issues.
• Participate in regular syncs with technical leads to identify automation gaps and drive process improvements.

LLM Prompt Engineering & Structured Outputs

• Craft and iterate on LLM prompts for structured output generation (JSON schema enforcement, classification, sentiment analysis).
• Debug and enhance AI pipeline outputs, addressing response inconsistencies.
• Apply knowledge of AI delegation and orchestration patterns to design reliable agent workflows.

Process & Knowledge Improvement

• Identify workflow gaps and automation opportunities, proposing preventive or optimization actions.
• Contribute to internal technical documentation, API specs, runbooks, and workflow guides.
• Support onboarding and upskilling of new team members on automation tools and AI systems.
• Collaborate with cross-functional teams to enhance customer experience and streamline operational workflows.

Requirements

Education & Experience

• Minimum 2 years of experience in AI automation engineering, backend integration, or technical roles in digital/SaaS environments.
• Proven experience building and maintaining automation workflows in N8N or equivalent platforms (Zapier, Make).
• Hands-on experience with REST APIs (design, integration, testing, documentation). Building APIs is a plus.
• Nice to have: Background in Customer Service or Support operations.

Technical Knowledge

• Deep understanding of REST API design principles (HTTP semantics, status codes, request/response structuring, versioning).
• Proficiency with N8N (webhook debugging, dynamic base URL configuration, AI node integration).
• Experience with CRM platforms like Zendesk, HelpScout, Freshdesk, or LiveAgent.
• Strong expertise in prompt engineering and Generative AI (LLMs), including experience with Claude, GPT, and similar models.
• Proficiency with Postman for API testing.
• Familiarity with voice AI platforms (Vapi, Bland AI, ElevenLabs, ConnexAI, Retell AI).
• Solid understanding of JSON data structures and structured output validation.
• Working knowledge of JavaScript and Python.
• Nice to have: Familiarity with multi-agent orchestration frameworks (LangGraph, CrewAI, AutoGen).

Skills

• Strong analytical and problem-solving abilities with a detail-oriented approach.
• Excellent written and verbal communication skills in English (advanced level).
• Ability to work autonomously while collaborating closely with cross-functional teams.
• Organized, accountable, and adaptable, managing multiple projects in a fast-paced environment.
• Curious and self-driven, with a passion for AI automation.

Why Join Us?

• Impactful Work: Bridge customer operations with cutting-edge AI, building systems with measurable business impact.
• Collaborative Environment: Work in an innovation-driven setting valuing continuous learning and creative problem-solving.
• Hands-on Experience: Gain experience with state-of-the-art AI agents, LLM integrations, voice bots, and automation infrastructure.
• Cutting-Edge AI: Operate at the forefront of applied AI, shaping the customer experience.

Growth and Career Development

• Prioritize your growth with a flexible career path, personalized internal training, and an annual budget for external learning opportunities.

Work-Life Balance

• Flexible start and end times, with options for full remote or office-based work in Barcelona.
• Enjoy free Friday afternoons with a 7-hour workday and a 35-hour workweek in July and August.

Comprehensive Benefits

• Competitive salary and a full-time permanent contract.
• Top-tier private health insurance (including dental and psychological services).
• 25 days of vacation plus your birthday off, with flexible options.

Unique Perks

• Barcelona Office: Free coffee, fresh fruit, snacks, a game room, and a rooftop terrace.
• Additional benefits include ticket restaurant and nursery vouchers.
• Join an environment that encourages innovation, learning, and growth.

Equal Employment Opportunity Employer

Leadtech is an EEO employer, welcoming applications from diverse backgrounds. We value high energy, skills, and a willingness to contribute to a great project.

Location Flexibility

Choose to work from the office daily, occasionally, or fully remote. Our Barcelona office is located on the seafront.