AI Java Software Engineer - FREELANCE

We are looking for an AI Java Software Engineer – Agentic Engineering in Lisbon

We are looking for a Java Backend Engineer with strong experience in modern Java, Spring Boot, event-driven microservices and, importantly, hands-on Agentic Engineering experience to join an international project focused on building scalable data and backend solutions.

💼 What do we offer?

Freelance project

International environment and technically challenging project

Opportunity to work with modern Java, cloud and AI engineering practices

Collaboration with experienced international development teams

📍 Location: Lisbon · Combination of on-site and remote work

🧩 What are we looking for?

Strong backend development experience with Java 17+

Hands-on experience with Spring / Spring Boot

Microservices based on event-driven architecture

Experience with Kafka or RabbitMQ

Demonstrable Agentic Engineering experience, including:

Agent instructions and configuration files such as CLAUDE.md, AGENTS.md or similar

Rules, skills and agent loops

Multi-agent orchestration

Integration of agentic workflows into the development process

Practical knowledge of modern Java features such as records, sealed classes and virtual threads

🎓 Nice to have

Experience with DDD and Hexagonal Architecture gRPC for internal service communication

CQRS and event-driven read models

AWS or Azure cloud experience

Experience working with heterogeneous data, including parsing, mapping and normalization

🌍 Language

Fluent English (C1 or equivalent) – THIS IS A MUST

If you have a strong Java backend background and genuine hands-on experience with Agentic Engineering, we’d love to hear from you!

If this opportunity is not the right fit for you, we would really appreciate it if you could share it with someone in your network who might be a better match.

For more information, feel free to contact me: ✉️ dgutierrez@pixie-services.com