Java Distributed Systems Engineer — State Machines

Adaptive; Barcelona; Hybrid; EUR 70,000 - 90,000; Full time

Benefits offered by this job

25 days vacation

2 additional days off for volunteering

Pension plan

Private Health Insurance

Ticket restaurant

Childcare/Commuting benefits

Wellbeing allowance

Language classes (English and Spanish)

Job summary

Adaptive invites a Java Distributed Systems Engineer to help build Aeron Sequencer, applying state machine replication to capital markets and enabling other teams to deliver reliable software. You will design and implement distributed systems in Java, evolve messaging protocols, and contribute to testing, benchmarking, and code reviews with a collaborative team.

The role offers a flexible, hybrid working model and opportunities to influence product decisions, architectures, and engineering

Qualifications

• Experience designing, building, debugging, and operating distributed systems.
• Strong experience developing server-side software in Java.
• Experience designing and evolving messaging protocols or software libraries.
• Experience using different forms of testing to support software quality, including correctness and performance.
• Experience measuring, benchmarking, and profiling components or systems.
• Strong written and verbal communication skills.

Responsibilities

• Analyse, design, discuss, and develop distributed systems based on replicated state machines.
• Write clean, efficient, maintainable, and self-documenting Java code.
• Design and evolve messaging protocols and software libraries.
• Troubleshoot and debug Java applications and distributed systems.
• Apply testing, benchmarking, measurement, and profiling to improve correctness and performance.
• Participate in code reviews, pairing, and technical discussions to raise the quality of our work.
• Contribute to product decisions, not just task execution.
• Keep up to date with relevant software engineering technologies and practices.
• Communicate technical decisions and priorities clearly to technical and non-technical stakeholders.

Skills

Distributed systems

Java server-side

Messaging protocols

Testing/Benchmarking

Communication

Tools

Kubernetes

Gradle

GitHub Actions

Cloud platforms (AWS/GCP/Azure)

Job description

Adaptive invites a Java Distributed Systems Engineer to help build Aeron Sequencer, applying state machine replication to capital markets and enabling other teams to deliver reliable software. You will design and implement distributed systems in Java, evolve messaging protocols, and contribute to testing, benchmarking, and code reviews with a collaborative team.

The role offers a flexible, hybrid working model and opportunities to influence product decisions, architectures, and engineering