Senior Java Engineer

Wizeline; Barcelona; Presencial; EUR 68.000 - 100.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Professional development

Flexible culture

Total rewards

Descripción de la vacante

Wizeline is seeking a Backend Engineer to build and scale translation services and backend systems using Java and Spring Boot in a Barcelona-based team. You will work on REST APIs, Kafka pipelines, and end-to-end translation workflows, collaborating with cross-functional teams to ensure performance, reliability, and quality.

The role emphasizes cloud infrastructure, CI/CD, automated testing, and robust production support, enabling international expansion across languages and media formats.

Formación

• Proficient in Java and Spring Boot for scalable RESTful APIs and microservices.
• Hands-on with cloud platforms, preferably GCP.
• Experience with event-driven architectures using Kafka or similar.
• Solid software engineering practices: Git, CI/CD, automated testing (unit/integration/e2e).
• Excellent written and spoken English communication.

Responsabilidades

• Develop and enhance core translation services and backend apps using Java and Spring Boot.
• Integrate with translation providers; optimize quality, scalability, cost and latency.
• Build reliable REST APIs and Kafka-driven pipelines for high-volume content tasks.
• Implement monitoring, logging, error handling, retries, automated tests, and validation for translation workflows.
• Drive performance tuning and architecture improvements to handle growing translation volumes.
• Support production deployments, CI/CD, system monitoring, and troubleshooting for platform stability.
• Collaborate with cross-functional teams on technical design, reviews, and documentation.
• Contribute to international expansion, multiple languages, and diverse content formats across media brands.

Conocimientos

Java

Spring Boot

Google Cloud Platform

Apache Kafka

Git

CI/CD

Automated testing

Agile methodologies

English communication

Descripción del empleo

Wizeline, a global AI-native technology solutions provider, develops cutting-edge, AI-powered digital products and platforms. We partner with clients to leverage data and AI, accelerating market entry and driving business transformation. As a global community of innovators, we foster a culture of growth, collaboration, and impact.

With the right people and the right ideas, there's no limit to what we can achieve.

Sounds awesome, right? Now, let's make sure you're a good fit for the role:

Key Responsibilities

Key Responsibilities

• Platform Development: Develop and enhance core translation services and backend applications using Java and Spring Boot.
• Optimization & Evaluation: Support direct integrations with translation providers; continually evaluate and improve translation quality, system scalability, cost efficiency, and latency.
• API & Event Pipelines: Build highly available, reliable REST APIs and Kafka-driven asynchronous pipelines for processing high-volume content and translation tasks.
• Operational Excellence: Implement end-to-end monitoring, logging, error handling, retries, automated testing, and validation mechanisms for complex translation workflows.
• Scale & Performance: Drive performance tuning and architecture enhancements to handle increasing translation volumes seamlessly.
• Production Support: Assist with production deployments, CI/CD pipelines, system monitoring, and troubleshooting to ensure platform stability.
• Cross-Functional Collaboration: Partner with cross-functional engineering teams, product managers, and key stakeholders on technical design, system architecture, code reviews, and documentation.
• Global Expansion: Contribute to the long-term evolution of the platform to support international expansion, additional languages, and diverse content formats across major media brands (including WSJ and international outlets).

Qualifications & Skills

Required:

• Core Backend: Proven expertise in Java and Spring Boot for building scalable RESTful APIs and enterprise microservices.
• Cloud & Infrastructure: Hands-on experience with Google Cloud Platform (GCP) or other major public cloud environments.
• Event-Driven Architecture: Experience with Apache Kafka or similar messaging systems for event-driven architectures and streaming pipelines.
• Software Engineering Practices: Proficiency with Git, CI/CD pipelines, automated testing (unit, integration, e2e), code reviews, and Agile methodologies.
• Communication: Excellent technical communication skills with fluency in written and spoken English.

Preferred / Nice to Have:

• Prior experience building or maintaining content management platforms (CMS), digital publishing systems, or media workflows.
• Experience evaluating LLM prompt engineering, fine-tuning, or MT quality estimation metrics (e.g., BLEU, COMET).

What we offer:

• Commitment to Professional Development
• Flexible and Collaborative Culture
• Total Rewards

*Specific benefits are determined by the employment type and location.*