Java AI Engineer

Location: Porto, Porto District, Portugal, Aveiro, Aveiro District, Portugal, Coimbra, Coimbra District, Portugal

Workplace: remote

Employment Type: full

Description

At Mindera, we believe in building software that improves lives. As a Java AI Engineer, you will have the following focus:

• Backend Architecture & Development: Design, build, and maintain scalable, high-performance microservices using Java 17/21+ and the Spring Boot framework.
• Agentic System Design: Architect and implement autonomous AI agents using frameworks like Spring AI or LangChain4j. Develop systems capable of multi-step reasoning, dynamic tool utilization, and memory management.
• LLM Integration: Integrate commercial Azure Co-pilot, into enterprise applications via robust RESTful APIs.
• Prompt Engineering & Optimization: Craft, test, and version-control complex prompts to ensure deterministic, safe, and accurate model outputs. Use skills and agents md files for long term maintainability.
• System Reliability: Implement guardrails, rate limiting, fallback mechanisms, and observability tracing for AI features to ensure enterprise-grade reliability and security.
• Collaboration: Work closely with App Engineers, product managers, data, and frontend developers to define AI use cases and deliver seamless end-to-end user experiences on Mobile Apps.

Requirements

Key Qualifications:

• Bachelors degree in Computer Science, Engineering, or a related field.
• At least 7 years of relevant professional experience for the role
• Previous experience as a Java Developer and Springboot
• Experience with Agentic AI and LLMs
• Knowledge of LangChain or equivalent orchestration frameworks.
• Strong technical writing skills for documenting APIs, architecture, and developer guides.

Benefits

The Things We Really Care About:

• Health Insurance, because health comes first
• Flexible working hours
• Open holidays, take the time you need for yourself
• Profit distribution for everyone
• Mindera Annual Trip, Sports, and sharing groups to connect and have fun!
• Training & conferences, create your own training plan
• Child Care vouchers

Other Good Things:

• Choose Laptop & Peripherals that best suit your needs
• Hotspot with unlimited usage (PT), for work or Netflix ;)
• We have amazing offices in Porto, Aveiro, and Coimbra if you want to physically connect with minders. Remote from Portugal is also an option. Remote from other Countries will depend on your current location and Projects.
• At the offices, we have a wide range of snacks to keep you fed and healthy
• Partnerships with local businesses

About Mindera

At Mindera we use technology to build products we are proud of, with people we love.

Software Engineering Applications, including Web and Mobile, are at the core of what we do at Mindera.

We partner with our clients, to understand their products and deliver high-performance, resilient and scalable software systems that create an impact in their users and businesses across the world.

You get to work with a bunch of great people, where the whole team owns the project together.

Our culture reflects our lean and self management attitude. We encourage our colleagues to take risks, make decisions, work in a collaborative way and talk to everyone to enhance communication.

We are proud of our work and we love to learn all and everything while navigating through an Agile, Lean and collaborative environment.

Check out our Blog and our Handbook!

Our offices are located: Porto, Portugal | Aveiro, Portugal | Coimbra, Portugal | Leicester, UK | San Diego, USA | San Francisco, USA | Chennai, India | Bengaluru, India | Cluj-Napoca, Romania | Blumenau, Brazil