Senior Java Developer (Kafka) - Hybrid

remoteo; Madrid; Híbrido; EUR 60.000 - 90.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

23 days of annual leave

Health care plan

Flexible benefits program

Training platforms access

WFH / remote work policy

Career development

Referral bonuses

Work-life balance measures

Descripción de la vacante

UST is seeking a Senior Java Developer for its Madrid hybrid team. You will design, develop and maintain enterprise-grade Java applications, focusing on system integration, quality assurance and scalable solutions.

The role requires deep Java expertise, RESTful integration experience, Kafka and messaging knowledge, and a proactive mindset with ownership. Training on the Actico Platform is provided. Hybrid model in Madrid (3x2).

Formación

• Extensive hands-on experience as a Java Developer
• Strong knowledge of Java stack and SDLC
• Experience with RESTful web services
• Experience with Eclipse IDE and Git
• Experience with Oracle Database and SQL
• Hands-on experience with Apache Kafka preferred
• Knowledge of enterprise messaging/queuing or event streaming
• Understanding asynchronous communication in distributed systems
• Ability to design, create and execute: functional/integration/acceptance testing
• Developers to ensure quality in absence of dedicated QA team

Responsabilidades

• Develop, maintain and integrate enterprise-grade Java applications
• Collaborate on system integration and quality assurance
• Design and implement test scenarios and data
• Own testing and validation before releases

Conocimientos

Java development

RESTful services

Eclipse IDE

Git version control

Oracle SQL

Apache Kafka

Distributed systems

Testing/QA mindset

Herramientas

Eclipse IDE

Git

Oracle Database

Kafka

Descripción del empleo

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

More in details, 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 all over the world and presence in more than 35 countries. We are leaders in digital technology services, providing large-scale technological solutions to leading global organizations.

What we look for?

We are looking for an experienced Senior Java Developer with a strong background in enterprise application development, system integration, and software quality assurance.

The ideal candidate combines solid technical expertise with a proactive mindset, ownership, and a passion for delivering high-quality solutions in complex environments.

Hybrid Model in Madrid (3x2)

Note: We will provide training on the Actico Platform

Mandatory Requirements:

• Extensive hands-on experience as a Java Developer, with a strong background in designing, developing, and maintaining enterprise-grade applications.
• Strong knowledge of the Java technology stack, software engineering best practices, and the full software development lifecycle.
• Good understanding of RESTful web service integration.
• Experience with Eclipse IDE for development, debugging, and application troubleshooting. Experience with version control systems, preferably Git.
• Experience with Oracle Database and SQL development.
• Hands-on experience with Apache Kafka is highly preferred.
• Candidates must demonstrate experience with enterprise messaging, queuing, or event-streaming technologies.
• Experience with Kafka is preferred, while exposure to platforms such as IBM MQ (WebSphere MQ), RabbitMQ, or similar alternatives will also be considered.
• Strong understanding of asynchronous communication patterns, message-driven architectures, and distributed system integration.
• Experience in designing, creating, and executing: Functional testing Integration testing Acceptance testing Mock-up testing Ability to independently define test scenarios, create test data, build mock environments, and thoroughly test their own developments.
• As there will initially be no dedicated QA team, developers will be responsible for ensuring the quality, stability, and validation of their own applications before release.

Nice to have:

• Experience with Dynamic Application Framework (DAF).
• Experience in Business Rule Management, including: Modelling Management Implementation Certifications or training in Visual Rules or Actico Rules.
• Experience with Actico Platform integration, particularly in Workplace-focused environments.
• Personal Attributes Strong communication and collaboration skills with a teamwork-oriented mindset.
• High level of ownership, commitment, and proactive attitude. Passion for delivering high-quality solutions.
• Ability to analyse complex problems, define solution paths, and focus on end-to-end solutions aligned with client needs. Reliable, self-motivated, and results-oriented professional.

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).
• Retribución Flexible´ Program: (Meals, Kinder Garden, Transport, online English lessons, Health Care Plan...)
• Free access to several training platforms.
• Professional stability and career plans.
• UST also compensates referrals from which you could benefit when you refer professionals.
• The option to pick between 12 or 14 payments along the year.
• Real Work Life Balance measures (flexibility, WFH or remote work policy, compacted hours during summertime...)
• UST Club Platform discounts and gym access discounts.

In UST we are committed to equal opportunities in our selection processes and do not discriminate based on race, gender, disability, age, religion, sexual orientation or nationality. We have a special commitment to Disability & Inclusion, so we are interested in hiring people with disability certificate.