Cargando descripción…

Senior Java Developer (AWS/RxJava) - Remote en… - Jobeax

Senior Java Developer (AWS/RxJava) - Remote en Madrid, España is listed on Jobeax. Browse 80,000+ vacancies available.

About the role

We are still looking for the very Top Talent...and we would be delighted if you were to join our team!

We are seeking a highly skilled Senior Java Developer with extensive experience building scalable, high-performance distributed systems.

You will join a talented engineering team responsible for designing, developing, and evolving mission-critical applications using modern Java, cloud-native architectures, and event-driven technologies.

What you'll do

Design, develop, and maintain robust backend services using Java 17/21 and Spring Boot.
Build scalable and resilient microservices leveraging reactive programming principles.
Develop and maintain gRPC APIs and Protobuf schemas, ensuring backward compatibility and proper schema evolution.
Implement highly concurrent and performant solutions, applying advanced thread-safety and concurrency patterns.
Work with Kafka-based event-driven architectures and production-scale data stores.
Create and maintain automated testing suites, including unit, integration, and contract tests.
Collaborate with cross-functional teams on architecture decisions, design reviews, and technical documentation.
Participate in troubleshooting, root cause analysis, and postmortem activities.
Contribute to CI/CD pipelines, cloud infrastructure, and containerized deployments.
Produce clear technical documentation, design proposals, and pull request descriptions.

Nice to have

Experience leading large-scale migrations or refactoring initiatives across multi-module codebases.
Knowledge of container packaging and multi-architecture image builds (Linux/AMD64 and Linux/ARM64).
Python knowledge with the ability to read, understand, and debug existing code.
Experience working with Apache Arrow or other columnar data formats.
CI/CD pipeline ownership using TeamCity, GitHub Actions, or similar technologies.
Experience contributing to architecture and technical strategy discussions.

What you'll get

23 days of Annual Leave plus the 24th and 31st of December as discretionary days!
Numerous benefits (Health Care Plan, Internet Connectivity, Life and Accident Insurances).
Flexible Compensation Program: meals, kindergarten, transport, online English lessons, health care plan, and more.
Free access to several training platforms.
Professional stability and personalized career development plans.
Referral Program with attractive bonuses for successful recommendations.
The option to choose between 12 or 14 salary payments per year.
Real Work-Life Balance measures (flexibility, remote work policy, summer schedule, and more).
Access to UST Club discounts and gym membership benefits.

If you would like to know more, do not hesitate to apply and we'll get in touch to share all the details. UST is waiting for you!

About the company & team

More in detail, UST is a multinational company based in North America, certified as a Top Employer and Great Place to Work company with over 35,000 employees worldwide and presence in more than 35 countries. We are leaders in digital technology services, providing large-scale technological solutions to some of the world's most renowned organizations.

Mandatory Requirements

8+ years of professional experience with Java development.
3+ years of hands-on experience with Java 17 or Java 21, including modern language features such as records, sealed classes, pattern matching, and virtual threads when applicable.
Strong expertise in Spring Framework and Spring Boot in production environments.
Proven experience with reactive programming using Project Reactor or RxJava (Mono, Flux, backpressure, retry strategies, hot vs. cold publishers), or advanced asynchronous programming with CompletableFuture and structured concurrency.
Production experience with gRPC and Protocol Buffers, including streaming RPCs, deadlines, interceptors, and schema evolution.
Strong understanding of concurrency fundamentals, executor services, lock-free patterns, and thread lifecycle management.
Solid testing practices using JUnit 5, Mockito, and AssertJ.
Experience developing integration tests against real dependencies and contract/parity testing.
Strong knowledge of Kafka consumer and producer semantics.
Production experience with at least one of the following technologies: Redis, PostgreSQL, or MongoDB.
Cloud experience with AWS (or equivalent cloud platforms), including services such as S3, IAM, managed Kafka solutions, and container runtimes.
Excellent written communication skills with the ability to create design documents, postmortems, and technical documentation.
English level C1 or higher.

Additional information

At UST, we are committed to equal opportunities throughout our recruitment processes and do not discriminate based on race, gender, disability, age, religion, sexual orientation, or nationality. We have a special commitment to Disability & Inclusion and actively encourage applications from professionals with a disability certificate.

Postularse a la vacante

Vacantes similares

Más como este puesto

CV-Library

Senior Java Developer (AWS/RxJava)

Hace 9 días

Remoto
Contrato

35k

... services, providing large-scale technological solutions to some of the world's most renowned organizations. What we look for? We are seeking a highly skilled Senior Java Developer with extensive experience building scalable, high-performance distributed systems. You will join a talented engineering team responsible for designing, ...

Spain, Vitoria

Java, Python, AWS Developer (100% Remote)

Hace 9 días

Remoto
Contrato

Permanent contract

You'll most likely need Spanish to apply. This job was automatically translated to English, see original posting . What you'll get - Remote work model 🏡. Option to work from the office, but always at the employee's choice. - Vacation 🌴: 22 vacation days + 2 personal days, plus December 24 and 31 off. - Permanent contract ...

Spain

UST España & Latam

Senior Java Engineer (AWS) - Remote

Hace 8 días

Remoto

35k

... countries. We are leaders on digital technology services, and we provide large-scale technologic solutions to big companies. What we look for? We are looking for Senior Java Engineer who will contribute to a project with one of our global customers, that is a global leader in credit cards, auto loans, banking and saving accounts. ...

Spain, Castro

ALTEN

Senior Java Developer - Remote

Hace 3 días

Remoto
Contrato

Hiring Freelance Senior Java Developers We are looking for a Senior Java Developer to join a long-term project for a leading financial institution. - Location: Madrid - Remote: 100% remote - Duration: Long-term - English: C1+ Requirements - 8+ years of professional experience with Java - 3+ years working with Java 17 or ...

Spain, Moaña

UST España & Latam

Senior Java Developer - AWS Microservices & Cloud

Hace 9 días

UST is seeking a Java Developer to join a microservice-based cloud environment in the utilities sector. You will design, develop, and maintain Java services, REST APIs, and integrations that connect critical business systems and internal tools. The role requires strong Java expertise, Spring Framework, Hibernate/JPA, and ...

Spain, Huelva

jobtraffic

Senior Java Developer (Kafka) - Remote

Hace 9 días

Remoto

35k

... digital technology services, providing large-scale technological solutions to leading global organizations. What we look for? We are currently looking for a Senior Developer (Java & Kafka) to join an exciting international project within a highly collaborative Agile environment. A passionate and experienced software engineer ...

Spain, España

Epam

Senior SAP CAP Java Developer

Hoy

Remoto

About the role Do you have background and wide experience in SAP and strong knowledge in CAP and Java? Are you an open-minded professional with good English skills? If it sounds like you, this could be the perfect opportunity to join EPAM as Senior SAP CAP Java Developer . EPAM is shaping the digital future for Fortune ...

Spain

All European Careers

Remote Senior Java Backend Developer | Agile + English

Hace 5 días

Remoto
Híbrido
Presencial

All European Careers is recruiting a Senior Back-End Java Developer for a fully remote role with occasional on-site visits in Murcia (up to 5 days per quarter). You will work within an agile team, delivering robust Java solutions and collaborating on code reviews and sprint ceremonies. The ideal candidate has 5+ years of ...

Spain, Murcia

UST

Senior Fullstack Developer Angular + Java (100% remote)

Hace 9 días

Remoto

35k

... digital technology services, and we provide large-scale technologic solutions to big companies. What are we looking for? We are currently looking for a Fullstack Developer to join one of our biggest clients in the banking sector. ✅ Key Skills - Java, Spring Boot, Hibernate/JPA - Angular, HTML, CSS, JavaScript, TypeScript - Oracle, ...

Spain

Plexus Tech

Senior Developer Java

Hace 8 días

Remoto

... compañías del IBEX 35, grandes retailers, operadores turísticos, entidades financieras, organismos públicos y empresas internacionales. Necesitamos incorporar Developer Senior Java de al menos 8 años de experiencia. Te incorporarás dentro del Grupo Plexus y participar en importantes y estables proyectos. ROL: - Desarrollar ...

Spain, Cequelinos

Plexus Tech

Senior Developer Java

Hace 9 días

Remoto

Spain, Vitoria

Senior Backend Developer (Python & AWS)

Hace 9 días

Presencial
Tiempo completo

€50,000 - €75,000 anuales

... técnica y la innovación. Habilidades y competencias requeridas - Experiencia demostrada de 5+ años en desarrollo backend con Python - Profundo conocimiento de AWS (EC2, S3, Lambda, RDS, etc.) - Dominio de bases de datos relacionales (PostgreSQL, MySQL) y NoSQL (MongoDB, DynamoDB) - Experiencia con frameworks como Django, ...

Spain, Barcelona

Senior Backend Developer (Python & AWS)

Hace 9 días

Remoto
Tiempo completo

€48,000 - €68,000 a year

... español, con más de 20 años de experiencia y un sólido historial como proveedor de soluciones innovadoras para empresas de todas las dimensiones. Buscamos un Senior Backend Developer apasionado por la tecnología que se una a nuestro equipo dinámico en modalidad híbrida. En este rol, serás responsable del diseño, desarrollo ...

Spain, Madrid

CAS Training

Senior Java Developer + Inglés

Hace 2 días

de 36000 a 40000 €/año

Descripción del trabajo Salario 36.000-40.000 euros Buscamos un/a Senior Application Developer especializado/a en tecnologías Java y Kafka para sumarse a un proyecto de alto impacto. Formarás parte de un equipo enfocado en el desarrollo de microservicios dentro de un entorno de alta disponibilidad. Funciones y Responsabilidades ...

Spain, Albacete

W Hunt España

Senior Java Developer (Kafka)

Hace 7 días

Remoto

45000 €/año

- Rol de Senior Java Developer (Kafka) - 100% Remoto Sobre nuestro cliente: Se anima a todos los posibles solicitantes a que se desplacen y lean la descripción completa del puesto antes de presentar su candidatura. Empresa con un proyecto internacional y un equipo técnico consolidado, que busca incorporar perfiles especializados ...

Spain, Castro

PrimeIT España

Senior .NET Developer | REMOTE

Hace 1 día

Remoto

¿Estás preparadx para un cambio y explotar tus habilidades como nunca? Sigue leyendo porque tenemos lo que buscas…

Spain, Castro

BCNC GROUP

Senior Java Developer - 100% remoto

Hoy

Remoto

... calidad del código tienen un peso real, ¡nos encantará conocerte! Únete a BCNC Group y participa en la construcción de soluciones tecnológicas de alto impacto. #Java #Java21 #SpringBoot #Microservices #Kafka #DDD #ArquitecturaHexagonal #BackendDeveloper #SoftwareEngineering #AWS #RemoteJobs #BCNCGroup #WeHaveOurOwnCode #ourvalues

Spain, Cequelinos

BCNC GROUP

Senior Java Developer - 100% remoto

Hace 8 días

Remoto

Spain, Castro

Senior Java Developer & Team Lead

Hace 9 días

Remoto
Híbrido
Tiempo completo

€65,000 - €90,000 a year

... experienced Senior Java Developer & Team Lead to join our Madrid office on a hybrid basis. This is a permanent position where you will lead a talented team of developers while maintaining hands-on involvement in architectural decisions and code implementation. You'll work with cutting-edge technologies including Java, Spring ...

Spain, Madrid

Capitole

DevOps Engineer (AWS & Java)

Hace 9 días

Remoto
Híbrido

€1200 EUR

Capitole Consulting sigue creciendo ¡y queremos hacerlo contigo! Buscamos un/a DevOps Engineer (AWS & Java) con al menos 5 años de experiencia para incorporarse a un proyecto internacional con un cliente del sector seguridad y alarmas. Se trata de un rol híbrido entre desarrollo y operaciones , en el que participarás en ...

Spain, Valencia