Manychat Inc. logo

Applied AI Engineer (AI Agents & Workflow Automation)

Job Overview

Location

Barcelona, Spain

Job Type

Full-time

Category

Software Engineering

Date Posted

June 22, 2026

Full Job Description

đź“‹ Description

  • • Design, build, and maintain AI-driven services and agent-based solutions for workflow and business process automation using TypeScript and Node.js.
  • • Develop orchestration logic across LLMs, internal services, APIs, databases, and third-party platforms to enable automated business workflows.
  • • Build backend components for AI products and automation pipelines with a focus on production-grade reliability, scalability, and performance.
  • • Integrate AI-powered workflows with CRM, ERP, ticketing, knowledge management, communication, and other enterprise business systems.
  • • Implement and improve RAG (Retrieval-Augmented Generation), tool/function calling, memory/state handling, evaluation, and monitoring systems for AI use cases.
  • • Partner closely with Product Managers, domain experts, and business stakeholders to identify high-impact AI use cases and translate ambiguous business requirements into technical solutions.
  • • Contribute across the full product lifecycle—from discovery and prototyping to production delivery and iterative improvement.
  • • Ensure production quality through rigorous testing, observability, security, performance optimization, and cost-aware architecture decisions.
  • • Document technical architecture, design decisions, and tradeoffs clearly for both technical and non-technical stakeholders.
  • • Collaborate with cross-functional teams including engineering, product, operations, and customer success to align AI solutions with real-world business needs.
  • • Maintain and enhance automation pipelines that integrate with REST APIs, webhooks, and third-party SaaS platforms used by over 1.5 million customers.
  • • Apply backend patterns such as async processing, retries, queues, idempotency, and error handling to ensure robust and resilient AI systems.
  • • Work within a tech stack centered on TypeScript, Node.js, NestJS, Express, OpenAI API, Anthropic API, LangChain, LangGraph, PostgreSQL, pgvector, Redis, and cloud infrastructure.
  • • Participate in evaluating and adopting new AI tooling, frameworks, and observability platforms to improve system reliability and user outcomes.

🎯 Requirements

  • • 3 – 5 years of experience in software engineering, backend engineering, or applied AI engineering.
  • • Strong hands-on experience with TypeScript and Node.js in production environments.
  • • Experience building backend services, APIs, and integrations.
  • • Practical experience with LLM-based applications, AI automation, or agentic workflows.
  • • Solid understanding of RAG, prompt engineering, tool/function calling, and context management.
  • • Experience working with SQL/NoSQL databases and external APIs.
  • • Understanding of reliable backend patterns such as async processing, retries, queues, idempotency, and error handling.
  • • Ability to understand business workflows and translate ambiguous requirements into clear technical solutions.
  • • Experience collaborating with product teams, analysts, operations, and other stakeholders.
  • • Strong communication skills and the ability to explain complex solutions to both technical and non-technical audiences.

🏖️ Benefits

  • • 🌍 Hybrid onboarding to start work remotely and relocation support for you and your family.
  • • đź’™ Comprehensive health insurance for both you and your family.
  • • 📚 Professional development budget for conference tickets, online courses, and other relevant resources to help you grow.
  • • đź«¶ Flexible benefits package to tailor perks that matter most for you.
  • • 🪴 Hybrid work and generous leave options to prioritize your work-life balance.
  • • 🍽️ In-office perks, including free meals and snacks.

🤝 Company

Skills & Technologies

Python
JavaScript
TypeScript
Node.js
Express
Data Science
Remote

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Manychat Inc. logo
Manychat Inc.
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About Manychat Inc.

Manychat Inc. provides a cloud-based platform that enables small and medium-sized businesses to create and manage automated chat marketing campaigns across Instagram Direct, Facebook Messenger, WhatsApp, Telegram, and SMS. The company offers drag-and-drop visual flow builders, audience segmentation, e-commerce integrations, and analytics dashboards to help merchants capture leads, nurture prospects, and drive sales through conversational interfaces. Founded in 2015 and headquartered in San Francisco, Manychat serves over one million businesses in 170 countries, ranging from solopreneurs to agencies and global brands seeking scalable, code-free automation for customer engagement and revenue growth.

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