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

Indra Group

Senior Backend Engineer (Spring Boot) - AWS & API First

Hace 8 días

Indra Mobility busca un Senior Backend Developer para unirse a proyectos de movilidad en San Fernando de Henares. Diseñarás, desarrollarás y mantendrás microservicios basados en Spring Boot y arquitecturas distribuidas, con AWS IoT Core y Lambda, asegurando alta disponibilidad y escalabilidad. Trabajarás en APIs siguiendo ...

Spain

Head of Engineering, Payment Gateway

Hace 13 días

Remoto

Fully remote

... to work with - Java (latest versions) - Spring and Spring Boot - Docker and Kubernetes - PostgreSQL, DynamoDB, Elastic search - Microservices architecture on AWS What we can offer you - Own the payments infrastructure that thousands of businesses and developers build on, at a company processing hundreds of billions of ...

Spain

Hays

Senior Php Developer (Symfony) - Híbrido

Hace 10 días

Híbrido

de 40000 a 45000 €/año

Senior Software Developer (PHP Symfony) | Verra Mobility Ubicación: Pozuelo de Alarcón, Madrid (modelo híbrido: 3 días oficina) Modalidad de contratación: Indefinido Nivel de inglés: Alto (mínimo C1) Desde Hays estamos colaborando con una empresa líder global en soluciones de movilidad inteligente y tecnología aplicada ...

Spain

intro

Senior Software Engineer, Backend (PHP)

Hoy

Contrato

... a strong advantage. We’re also particularly interested in engineers who have worked on: Legacy modernisation or technology migration projects Migration into Java/Kotlin environments AWS and cloud-native architectures Smaller product engineering teams with end-to-end ownership Practical use of AI within software development ...

Spain, Murcia

ISCAREM HUMAN RESOURCES

SENIOR DBA SQL SERVER - AWS STORAGE (Madrid-Híbrido)

Hace 3 días

Remoto
Híbrido
Presencial

de 50000 a 55000 €/año

... especializados en: Desarrollo de Software y Web a través de equipos con amplia experiencia en el desarrollo de aplicaciones basadas en las más diversas tecnologías (JAVA, C#, .NET, ASP, PHP,…) asi como en la realización de desarrollos a medida de aplicaciones de gestión, de integración, intranets, extranets, gestión de comunicaciones, ...

Spain, Madrid

Amazon

Senior Water Infrastructure Manager, AWS EMEA Water Team

Hace 3 días

Contrato

Senior Water Infrastructure Manager, AWS EMEA Water Team Job ID: 10528294 | AWS EMEA SARL (Spain Branch) - G84 The EMEA Water team is looking for a Senior Water Infrastructure Manager to support scaling and growth across our Data Centre network. If you like to drive the development, implementation and construction of new ...

Spain, Madrid

Capitole

Devops Aws

Hace 5 días

Remoto

€1200 EUR

... Todos los posibles candidatos deben leer con atención los siguientes detalles de este trabajo antes de presentar una candidatura. Buscamos un/a Devops Engineer Senior – IoT (AWS & Microservices) A nivel técnico: - E xperiencia al menos 4 años con este rol - Experiencia con AWS(EKS, IoT Core, S3, DynamoDB), Java, Docker, Kubernetes, ...

Spain, Zaragosa

SoftwareOne

AWS Consultant

Hace 6 días

Híbrido

12k

... working within migration frameworks, including MAPAbility to mentor consultants and drive technical excellence across projectsAWS Certified Cloud PractitionerAWS Certified Solutions Architect – AssociateDesirable:AWS Certified Solutions Architect – ProfessionalExperience working with the AWS Well-Architected FrameworkJob ...

Spain, Barcelona

Software Engineer – AWS

Hace 13 días

Remoto
Tiempo completo

€48,000 - €54,000 a year

Nice to have - Deep AWS expertise. - Experience with Infrastructure as Code, such as Terraform, CDK, or Pulumi. - Experience with Kubernetes and microservices architecture. Job description LocalStack - the Local Cloud Sandbox for Developers and AI Agents We are a fast-growing Series A startup building cutting-edge technology ...

Spain

CV-Library

Devops AWS

Hace 13 días

Remoto

€1200 EUR

Capitole sigue creciendo y queremos hacerlo contigo ! Buscamos un/a Devops Engineer Senior – IoT (AWS & Microservices) con al menos cinco años de experiencia para incorporarse a un servicio de cobertura total dentro del entorno tecnológico M2M en un contexto internacional. A nivel técnico: - E xperiencia al menos 4 años ...

Spain, Valencia

SQUAD Technology Solutions

Global Java Backend Developer - Financial Back Office

Hace 3 días

SQUAD Technology Solutions recruta un Java Backend Developer para colaborar en proyectos del sector banca. Se busca experiencia en desarrollo y soporte de aplicaciones Back Office, con interacción con equipos internacionales y dominio de Java/Spring Boot. El candidato ideal maneja PL/SQL, Linux y herramientas DevOps, aportando ...

Spain

Coforge

Java Technical Lead

Hace 14 días

Híbrido

Java Technical Lead Coforge Madrid, Community of Madrid, Spain Location: Madrid, Spain (Hybrid) Type: Permanent Skills: Java, SpringBoot, AWS, Software Development, Team Management, Client Management, TypeScript Language proficiency: Spanish and English We @Coforge are looking for a Java Tech Lead to join our team supporting ...

Spain, Madrid

jobtraffic

Ingeniero/a Senior Java & Azure (Remoto)

Hace 1 día

Remoto

... Ingeniería de Sistemas, Ingeniería de Software, Soporte Tecnológico, Asistencia Técnica, I+D+i y Smart Cities. Abrimos una nueva posición para un/a Ingeniero/a Senior Java & Azure , en modalidad 100% teletrabajo para un proyecto internacional . Requisitos imprescindibles - Experiencia al menos 8 años. - Licenciado/a en Ingeniería ...

Spain

Searchability

Senior Backend Software Engineer (Java/Kotlin) - Madrid

Hace 3 días

Híbrido
Presencial

65000 €/año

Senior Backend Software Engineer (Java/Kotlin) Key Highlights - Salary up to €65,000 - Hybrid working – 3 days onsite in Madrid - Work with Java, Kotlin, Cloud Technologies and Distributed Systems - Join a high-performing engineering team building scalable, cloud-native applications About the Client Due to continued growth, ...

Spain, Madrid

Indra Group

Ingeniero Backend Java Senior | Teletrabajo 60%

Hace 3 días

Remoto

Indra Group busca un Ingeniero/a Backend Java para proyectos de Ciberdefensa. El rol implica desarrollar servicios backend, APIs REST seguras y escalar sistemas en entornos de defensa y ciberseguridad, con Java 8+ y Spring. Se trabajará en arquitecturas técnicas, pruebas con TDD/BDD y entorno ágil, con mentoring de perfiles ...

Spain, Barcelona

Atradius N.V. (Italy)

Senior Java Backend Architect & API Leader

Hace 5 días

Atradius N.V. (Italy) is seeking a Java Backend Architect in Madrid to define architecture for Java services and APIs while ensuring security and performance. This role requires collaboration with cross-functional teams, promoting modern frameworks and practices, and guiding teams through technical challenges. The ideal ...

Spain, Madrid

Plexus Tech

Desarrollador Full Stack Senior (Java & Angular)

Hace 6 días

4500

... Es necesario residir en A Coruña o alrededores. Se ruega abstenerse de apuntarse a la oferta quien no resida en zona o alrededores. Lenguajes y Tecnologías: Java, SQL, JavaScript, Hibernate, JPA. - Frameworks: Spring Boot, JSF, Angular, Vue.js. - Herramientas: Docker, Swagger, Postman, Jira, Git. - Metodologías: Metodologías ...

Spain

Capitole

Desarrollador/A Java Senior (Sector Seguros)

Hace 10 días

Remoto

€1200 EUR

Desarrollador/a Java Senior (sector seguros) Capitole León, tierra de león (comarca); provincia de león; castilla y león, Spain Descripción del trabajo Capitole sigue creciendo ¡y queremos hacerlo contigo! Estamos buscando un/a Desarrollador/a Java Senior en Madrid para un proyecto estratégico en una importante empresa ...

Spain, León

Capitole

Desarrollador/a Java Senior (Kafka & Arquetipos)

Hace 10 días

Remoto

€1200 EUR

Capitole Consulting sigue creciendo ¡y queremos hacerlo contigo! ¿Tienes experiencia en Java y has trabajado en la creación, desarrollo o evolución de arquetipos Java ? Buscamos un/a programador/a Java Senior para incorporarse a un equipo especializado en el desarrollo y estandarización de aplicaciones, trabajando en la ...

Spain, Córdoba

Krell Consulting & Training, S.L.

Senior Backend Criptografía - Java, Microservicios (Híbrido)

Hace 11 días

Híbrido

... sector de transporte y movilidad. La persona elegida manejará soluciones backend, APIs y sistemas orientados a eventos, integrado en un entorno híbrido. Se requiere un mínimo de 5 años de experiencia en Java y conocimientos en criptografía. Se ofrece un proyecto de larga duración y un ambiente de trabajo colaborativo.

Spain, Madrid