Senior Backend Developer – Java/Spring Boot, Agentic LLMs

🔥 0 minutes ago

🇪🇺 Europe – Remote

⏰ Full Time

🟠 Senior

🔙 Backend Engineer

👻 Ghost score 25%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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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

• Develop and improve a large Java backend powering web applications, mobile experiences and integrations with external systems • Implement reliable features end-to-end • Work closely with product and engineering colleagues • Build and maintain distributed services and asynchronous event processing • Apply agentic LLM knowledge in practical Java development, including integrations, retrieval and automation where relevant • Contribute hands-on software engineering rather than AI research or architecture-only work • Take ownership of code quality, testing, debugging and end-to-end delivery

🎯 Requirements

• 6+ years of hands-on Java backend engineering, ideally Java 17 • Experience with Spring Boot 2.x/3.x and Hibernate 5.x/6.x • Experience building and maintaining scalable distributed systems • Experience with REST APIs and relational data models with PostgreSQL • Practical event-driven development with Apache Kafka or comparable messaging/streaming technologies • Strong familiarity with functional programming principles, including immutability, pure functions and concurrency-aware design • Hands-on familiarity with LLMs and agentic workflows, including RAG pipelines, agent/tool interactions and LLM orchestration • Ability to discuss concrete LLM implementations • Regular use of AI-assisted coding tools such as Cursor, Claude Code or GitHub Copilot • Sound judgment about code quality and testing • Git, Maven, testing, debugging and end-to-end delivery ownership • Fluent professional English, B2 minimum; C1 preferred • Preferred: experience with Model Context Protocol (MCP), autonomous agents or multi-agent workflows • Preferred: Scala, Kotlin or functional Java libraries such as Vavr • Preferred: Elasticsearch, vector search/embeddings, Redis and performance optimisation • Preferred: Docker, Kubernetes, AWS, Terraform and CI/CD • Preferred: experience integrating LLM-powered features into existing backend services

🏖️ Benefits

• Full remote work across Europe