Long-term B2B Contract | Remote within EU
Role Overview
We are looking for a deeply hands-on Senior Java Engineer who can provide technical leadership while continuing to design, build and ship production code. You will work across several backend services rather than being assigned to one isolated project. The environment consists of distributed, cloud-native systems, with Java as the primary language and Python used across parts of the wider platform.

You will collaborate closely with Product Owners, DevOps engineers and other development teams, helping shape technical solutions across multiple services and translating product requirements into scalable backend architecture.

Key Responsibilities:

Design, build and maintain scalable backend services and APIs, primarily in Java

Write production-quality code as a core part of your daily work

Contribute to Python services and codebases when required

Work across approximately three to four interconnected microservices

Make and influence technical and architectural decisions





Break down complex requirements and guide their technical implementation

Review code and establish strong engineering standards

Mentor engineers and provide technical guidance without formal line-management responsibility

Collaborate with Product Owners to evaluate requirements, trade-offs and delivery approaches

Build and operate cloud-native services, primarily on AWS

Deploy and run containerised applications using Kubernetes and Docker

Work with DevOps engineers on CI/CD, deployment, scalability and reliability

Use data, analytics and operational insights to support technical decisions

Contribute to testing, documentation and continuous improvement throughout the SDLC

Support the adoption of AI-assisted engineering tools and solutions where appropriate

Requirements:

At least 5 years of professional backend engineering experience

Strong, recent and hands-on commercial experience with Java

Proven experience designing and develo

📌 Senior Java Engineer (Madrid)
🏢 Salve.Lab
📍 Madrid