Overview
Asegúrese de leer detenidamente la información sobre esta oportunidad antes de presentar su candidatura.
At
Q-tech, we’re looking for a
Senior Java Engineer
to join a integral SaaS product that’s scaling fast and moving into a more mature, reliability‑focused phase.
The platform handles a high volume of data and workflows used by customers across multiple countries. The team is strengthening its foundations to ensure stability, consistency and long‑term scalability — and they’re looking for someone who can take a leading role on the Java side.
You’d become
the Java reference point : someone who can set technical direction, build new services with
Java + Spring + PostgreSQL, and help elevate the platform’s engineering standards. There’s also some existing functionality in
Node.Js, and part of the work involves gradually moving that logic into the new Java‑based architecture.
This isn’t a “ship fast and patch later” environment. Quality matters: clean architecture, solid testing, strong patterns, observability, and a product that needs to behave predictably for demanding clients.
What you’ll do
Design and build backend services using Java + Spring
Bring architectural vision, patterns, and best practices
Help migrate existing Node.Js components into the new Java stack
Work with clean/hexagonal architecture and rich domain models




Collaborate with a senior team and a technically strong CTO
Make autonomous technical decisions that shape the platform
Requirements
6+ years of experience working with
Java
in complex or high‑reliability environments
Strong expertise with
Spring
and the ability to design services from scratch
PostgreSQL experience is a must
(data modelling, performance, migrations, consistency)
Solid understanding of
clean/hexagonal architecture, domain‑driven thinking and tactical patterns
Strong testing mindset and familiarity with CI/CD and engineering best practices
Ability to review, challenge and elevate the team’s technical decisions
Experience working with existing codebases and migrating functionality is a plus (some parts currently in
Node. xhfqzwm js )
Autonomy to make technical decisions without constant oversight
Good communication skills and a collaborative mindset
Based in Spain (remote)
Experience collaborating with distributed and multicultural teams
What the role offers
Become the go‑to Java expert in the company
Build critical components from scratch
A real technical challenge with direct product impact
A stable environment focused on doing things properly
Remote work from anywhere in Spain + optional offices in several cities
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Hay opciones de teletrabajo/trabajo desde casa disponibles para este puesto.

📌 Senior Java Engineer (Remote Within Spain) (Madrid)
🏢 Q-Tech
📍 Madrid