Cargando descripción…

Senior Java Developer (AWS/RxJava) en Vitoria, España - Jobeax

Senior Java Developer (AWS/RxJava) en Vitoria, España is listed on Jobeax. Browse 90,000+ vacancies available.

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

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, developing, and evolving mission-critical applications using modern Java, cloud-native architectures, and event-driven technologies.

⚙ Key Responsibilities:

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.

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.

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 can we offer?

✈️ 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!

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

DEVELOPER JAVA EXPERT (FRAMEWORK SPRING/API REST)

Hace 2 días

This position is at Santander The selection process will be fully managed by Santander. -- DEVELOPER JAVA EXPERT (FRAMEWORK SPRING/API REST) Boadilla del Monte, Spain ### WHAT YOU WILL BE DOING SCIB/SGT está buscando un/a Developer Java Expert (FrameWork Spring/API REST) para nuestras oficinas en Boadilla del Monte. ### ...

Spain, Palma

DevOps Engineer (AWS)

Hace 3 días

Remoto
Híbrido

... profesionalmente en un entorno multicultural, motivador y desafiante. Tus principales responsabilidades serán: - Gestionar y automatizar infraestructura en entornos AWS siguiendo buenas prácticas de Infraestructura como Código (IaC). - Desarrollar e implementar pipelines de CI/CD para automatizar los procesos de desarrollo y ...

Spain, Madrid

Senior Backend Engineer | AI Scale-up | Golang, AWS, Kafka | Up to €95K

Hace 3 días

Remoto
Híbrido

95000 €/año

Senior Backend Engineer | AI Scale-up | Golang, AWS, Kafka | Up to €95K We’re partnered with a fast-growing AI scale-up following a successful $25m Seed round, backed by top-tier international venture funds. The company is scaling rapidly and already seeing strong traction with enterprise customers. About the Role: They ...

Spain, Vitoria

Experto/a en Java (Alcobendas, M, ES, 28108)

Hace 3 días

... deseados: - Graduado en Ingeniería informática (o equivalente). - Graduado en Formación Profesional Superior o Medio en Informática. - Experiencia en desarrollo con Java, microservicios Spring boot bajo entorno AWS - Se valora otras tecnologías como Kakfka y arquitectura hexagonal Competencias personales: - Trabajo en equipo. ...

Spain, Alcobendas

Senior Software Engineer-Scala

Hace 1 día

... and/or Google Cloud Platform (GCP).Knowledge of cloud authentication and authorization mechanisms, including:IAMSTSAssumeRoleWebIdentityExperience integrating with AWS SDKs, particularly:Amazon S3AWS STSExperience working with:Google BigQueryGoogle DataflowStrong SQL skills and experience with https://jobeax.com/link/XjdV27LyixviUGXQ ...

Spain, Heredia

Experienced Flutter Developer - Consumer App (m/f/d)

Hace 2 días

Remoto

60k

Your TasksWe are looking for a Flutter Developer who will be working with other Product Team members to contribute with your skills and ideas to our newly written Consumer Flutter App, available in 11 https://jobeax.com/link/LryR1aVQzXdFPO2m tasks will include:• Contribute to our newly written Flutter App, available in ...

Spain, Barcelona

Senior Java Developer (AWS/RxJava)

Hace 32 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, Vigo

Senior Java Developer (AWS/RxJava)

Hace 32 días

Remoto
Contrato

35k

Spain, Cequelinos

Senior Java Developer (AWS/RxJava)

Hace 32 días

Remoto
Contrato

35k

Spain

Senior Flutter

Hoy

Desarrollador/a Senior Flutter Buscamos incorporar un/a Desarrollador/a Senior Flutter para participar en la evolución y consolidación de una aplicación multiplataforma. La persona seleccionada tendrá un papel relevante dentro del área técnica, colaborando en la toma de decisiones, el desarrollo de nuevas funcionalidades ...

Spain

Senior Petroleum Inspector

Hace 1 día

Core Laboratories seeks an Inspector to perform inspections at terminals, refineries, and aboard vessels, quantifying and sampling petroleum products and lubricants per API and company guidelines. You will supervise loading/unloading, perform bunker surveys, and ensure safety and quality standards.

Spain

Proyectista Senior Matrices Progresivas

Hace 2 días

Proyectista Senior de Matrices Progresivas en 3D Ubicación: Baix Llobregat, Barcelona Modalidad: Presencial ¿Tienes experiencia en el diseño industrial de utillajes y matricería? Seleccionamos un/a Proyectista Senior de Matrices Progresivas para integrarse de forma estable en la oficina técnica de una consolidada planta ...

Spain, Alacante

Senior Sponsorship Sales Manager

Hace 4 días

... de Selección & Executive Search y nos dedicamos a proporcionar servicios especializados de consultoría de Recursos Humanos. En este momento seleccionamos un: Senior Sponsorship Sales Manager – Grandes Cuentas Importante organización líder en el ámbito de eventos y experiencias de alto impacto busca incorporar un/a profesional ...

Spain, Málaga

Senior Galileo SW Engineer

Hace 4 días

This is an exciting opportunity for a Senior Galileo SW Engineer to work on the Galileo project, the European space flagship programme. Galileo is Europe's Global Navigation Satellite System (GNSS), providing accurate positioning and timing information. CETRA BASE is currently looking for one experienced SW Engineer. Position ...

Spain, Madrid

Proyectista de estructuras senior

Hace 4 días

Liderar y gestionar proyectos de estructuras desde el inicio hasta su entrega, coordinando equipos y asegurando la calidad técnica en cada fase. Impulsar el uso de la metodología BIM para optimizar los procesos de diseño y construcción. Se requiere titulación en ingeniería...

Spain, Alacante

Analista de Datos Senior, Álava

Hace 1 día

Analista de Datos Senior Descripción del Rol Acerca del rol El candidato desempeñará el rol de Ingeniero de Datos, participando en el diseño, desarrollo, mantenimiento y optimización de las plataformas de datos que soportan las operaciones y la toma de decisiones. Será responsable de construir y administrar procesos de ...

Spain, Alava

QA SENIOR MANAGER / QP DEPUTY ALMIRALL

Hace 3 días

Contratista Práctica Contrato Horario flexible

Spain, Salamanca

Senior Surety Underwriter Europe Lead (Madrid)

Hace 4 días

Junior

Spain, Barcelona

Proyectista Senior Plant 3D - Tuberías (ç)

Hace 4 días

... Construcción, Obra Civil y muchos más. Además, desarrollamos soluciones tecnológicas a medida desde nuestros BETWEEN Labs. Estamos buscando un/a Proyectista Senior Plant 3D para ampliar uno de nuestros equipos. La persona deberá contar con fuerte conocimiento en mecánica (piping, equipos, estrucuras), pero que tenga interés ...

Spain, Alacante

Veterinario Senior - Medicina Interna y Tecnología

Hace 5 días

AniCura España busca un Veterinario Senior en Medicina Interna para su hospital veterinario en Navia, Galicia. Se requiere licenciatura en veterinaria y al menos 4 años de experiencia. El candidato ideal debe tener conocimientos en imagen, ecografías y TAC, así como orientación al cliente y al paciente. Ofrecemos contrato ...

Spain, Vigo