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Java Engineer - AWS & Reactive Microservices

Ust
Madrid, Spain
6 days ago
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Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Compensation
€70,000.0 - €110,000.0
Working hours
Regular working hours
Languages
English
Job source
www.jobleads.com

Tech stack

Java (Programming Language) Amazon Web Services Cloud Engineering Spring Framework Spring-boot Apache Kafka Reactive Programming Cloud Optimization Grpc Microservices

Job description

UST is seeking a Senior Java Developer to design, develop, and evolve mission-critical applications using Java 17/21, Spring Boot, and cloud-native architectures. You will work on scalable microservices, reactive programming, and gRPC with a focus on performance and scalability.

Requirements

The role requires strong Java expertise, production experience with Spring and Kafka, and cloud usage (AWS). Excellent communication and English (C1) are essential.

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Good distractions

Talks and stories from around this role — technically off-topic, practically not.

Moments

Explore playlists

1:37 min

Introduction to Apache Kafka benchmarking and performance analysis

Kirill Kulikov · LIVE

4:56 min

Establishing internal service communication with gRPC

Florian Bader Florian Bader · World Congress 2026 Europe

2:25 min

Implementations of reactive programming in Java ecosystems

Mohammad-Ali A'râbi Mohammad-Ali A'râbi · LIVE

1:39 min

Defining Apache Kafka and its primary real-time use cases

Lucia Cerchie · LIVE

1:11 min

Evaluating architectural trade-offs between REST and gRPC

Sakshi Nasha Sakshi Nasha · Europe 2026 Virtual

1:18 min

Technology stack for building robust microservices applications

Niklas Heidloff · LIVE

Videos

See all
Development of reactive applications with Quarkus thumbnail
39:10
LIVE • almost 6 years ago

Development of reactive applications with Quarkus

Niklas Heidloff

How to Benchmark Your Apache Kafka thumbnail
35:27
LIVE • almost 6 years ago

How to Benchmark Your Apache Kafka

Kirill Kulikov

Exploring the Power of gRPC-Gateway for Writing RESTful Services thumbnail
26:45
Europe 2026 Virtual • 2 months ago

Exploring the Power of gRPC-Gateway for Writing RESTful Services

Rajiv Ranjan Singh

The Rise of Reactive Microservices thumbnail
46:24
World Congress 2022 • about 4 years ago

The Rise of Reactive Microservices

David Leitner

Boosting OpenSearch Performance: gRPC Search in Action thumbnail
24:20
Europe 2026 Virtual • 2 months ago

Boosting OpenSearch Performance: gRPC Search in Action

Sakshi Nasha

Let's Get Started With Apache Kafka® for Python Developers thumbnail
38:50
LIVE • over 3 years ago

Let's Get Started With Apache Kafka® for Python Developers

Lucia Cerchie

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