Mid-Level Java Backend Developer

Expleo; Lisboa; Sur place; EUR 35 000 - 60 000; Plein temps

Résumé du poste

Expleo is seeking a Backend/Java Developer in Lisbon to contribute to backend systems, microservices, and cloud-based architectures. You will work on REST APIs, GraphQL and secure auth flows in a collaborative, international team.

The role requires 3–4+ years of relevant experience, strong communication in English, and attention to detail as you help deliver reliable services, integrate with AWS Cloud, and support event-driven messaging infrastructures.

Qualifications

• 3–4+ years of backend or Java development experience.
• Strong Java, microservices, REST APIs and GraphQL knowledge.
• Experience with authentication/authorization flows.
• Experience with event-driven development and messaging systems.
• AWS Cloud (SQS) experience.
• Good English communication and collaboration skills.

Connaissances

Backend development

Java

Microservices

REST APIs

GraphQL

Authentication & authorization

Event-driven development

Messaging systems

AWS Cloud (SQS)

English communication

Outils

AWS Cloud

SQS

Description du poste

Overview

Expleo is a trusted partner for your innovation journey. As a global engineering, technology and consulting service provider, we are ideally positioned to help you achieve your ambitions and future-proof your business. With a smart blend of bold thinking and reliable execution, we’re able to fast-track innovation through each step of your value chain.

We are strategically positioned to build value, with global footprint across 30 countries.We are as global and local as you need us to be, with strong best-in-class pan-European technological centres and unique best-shoring capabilities.

We leverage a network of high value-adding affiliates in consulting and industrial excellence, and leading partners across multiple sectors to provide you with the most comprehensive services and solutions in an ever-changing environment.

Essential skills

- Professional experience (3-4+ years) as a Backend Developer, Java Developer, or in similar roles;- Strong proficiency in Java, microservices, REST APIs, and GraphQL;- Solid knowledge of authentication and authorization flows;- Professional experience with event-driven development as well as messaging systems;- Professional experience with AWS Cloud (SQS);- Good communication skills in English, with the ability to collaborate, solve problems, and pay attention to detail.