Java Engineer, AI Enabled – Java 21, Spring Boot, LangChain4j

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HumanIT Digital Consulting

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2020

💼 Consulting

📦 Logistics

📣 Marketing

Consulting • Logistics • Marketing

HumanIT Digital Consulting is a human-centered digital consulting and talent services firm that helps organizations find, onboard and grow people while delivering digital transformation and IT-related consulting. The company emphasizes people-first values and offers services to both jobseekers and hiring companies across offices in Portugal and Switzerland. HumanIT positions itself as a partner for businesses seeking human talent and for professionals seeking career opportunities in digital and IT roles.

📋 Description

• Design and develop scalable microservices and AI-enabled applications using Java 17/21, Spring Boot, and modern AI orchestration frameworks • Integrate Large Language Models into enterprise applications through robust REST APIs • Ensure reliability, security, observability, and maintainability of AI-enabled systems • Architect autonomous AI agents capable of multi-step reasoning, tool orchestration, and memory management • Develop AI-powered backend services, autonomous AI agents, and LLM integrations • Collaborate with product managers, frontend developers, data teams, and backend engineers in cross-functional Agile teams • Deliver high-quality AI-driven solutions for enterprise retail technology

🎯 Requirements

• Minimum 7 years of professional experience in software engineering • Strong experience developing backend applications with Java 17 or Java 21 • Solid experience with Spring Boot and microservices architecture • Hands-on experience designing and implementing Agentic AI solutions • Experience using Spring AI or LangChain4j for AI orchestration • Practical experience integrating Large Language Models (LLMs) into enterprise applications • Experience consuming and developing RESTful APIs • Strong knowledge of Prompt Engineering, prompt optimization, and prompt lifecycle management • Experience implementing reliable AI systems, including observability, guardrails, rate limiting, fallback strategies, and secure integrations • Strong communication and collaboration skills in cross-functional Agile teams • Bachelor's degree in Computer Science, Software Engineering, or a related field • English: B2 (Upper Intermediate) or higher • Experience integrating Azure Copilot or other commercial AI platforms is preferred • Knowledge of AI memory management and multi-agent architectures is preferred • Experience with technical, API, and architecture documentation is preferred • Experience in enterprise-scale or retail technology environments is preferred • Familiarity with AI governance, security, and responsible AI best practices is preferred • Experience collaborating with mobile application development teams is preferred

🏖️ Benefits

• 15th month salary • Health insurance covering your family • Birthday off • Mobility program for digital nomads • Real work-life balance