Java & LLM/AI Software Engineer - Barcelona (Hybrid) at Wizeline

<p><strong>We are:</strong></p> <p>Wizeline, a global AI-native technology solutions provider, develops cutting-edge,&nbsp;<strong>AI-powered</strong>&nbsp;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&nbsp;<strong>growth, collaboration,&nbsp;</strong>and&nbsp;<strong>impact.</strong></p> <p><strong>With the right people and the right ideas, there’s no limit to what we can achieve</strong></p> <p><strong>Are you a fit?</strong></p> <p data-path-to-node="5">We are seeking a skilled <strong data-path-to-node="5" data-index-in-node="25">Senior Software Engineer</strong> to join our team in building and scaling our next-generation automated translation and localization platform. In this role, you will work closely with our engineering and product teams to integrate state-of-the-art AI/LLM models and machine translation engines into our enterprise content-processing ecosystem.</p> <p data-path-to-node="6">You will design and implement high-performance microservices, event-driven pipelines, and robust APIs to support global media expansion, multi-language publishing, and real-time content delivery.</p> <h3 data-path-to-node="8"><strong data-path-to-node="8" data-index-in-node="0">Key Responsibilities</strong></h3> <ul data-path-to-node="9"> <li> <p data-path-to-node="9,0,0"><strong data-path-to-node="9,0,0" data-index-in-node="0">Platform Development:</strong> Develop and enhance core translation services and backend applications using Java and Spring Boot.</p> </li> <li> <p data-path-to-node="9,1,0"><strong data-path-to-node="9,1,0" data-index-in-node="0">AI &amp; LLM Integration:</strong> Integrate cutting-edge AI/LLM translation capabilities and direct LLM/machine translation provider APIs into our content processing infrastructure.</p> </li> <li> <p data-path-to-node="9,2,0"><strong data-path-to-node="9,2,0" data-index-in-node="0">Optimization &amp; Evaluation:</strong> Support direct integrations with translation providers; continually evaluate and improve translation quality, system scalability, cost efficiency, and latency.</p> </li> <li> <p data-path-to-node="9,3,0"><strong data-path-to-node="9,3,0" data-index-in-node="0">API &amp; Event Pipelines:</strong> Build highly available, reliable REST APIs and Kafka-driven asynchronous pipelines for processing high-volume content and translation tasks.</p> </li> <li> <p data-path-to-node="9,4,0"><strong data-path-to-node="9,4,0" data-index-in-node="0">Operational Excellence:</strong> Implement end-to-end monitoring, logging, error handling, retries, automated testing, and validation mechanisms for complex translation workflows.</p> </li> <li> <p data-path-to-node="9,5,0"><strong data-path-to-node="9,5,0" data-index-in-node="0">Scale &amp; Performance:</strong> Drive performance tuning and architecture enhancements to handle increasing translation volumes seamlessly.</p> </li> <li> <p data-path-to-node="9,6,0"><strong data-path-to-node="9,6,0" data-index-in-node="0">Production Support:</strong> Assist with production deployments, CI/CD pipelines, system monitoring, and troubleshooting to ensure platform stability.</p> </li> <li> <p data-path-to-node="9,7,0"><strong data-path-to-node="9,7,0" data-index-in-node="0">Cross-Functional Collaboration:</strong> Partner with cross-functional engineering teams, product managers, and key stakeholders on technical design, system architecture, code reviews, and documentation.</p> </li> <li> <p data-path-to-node="9,8,0"><strong data-path-to-node="9,8,0" data-index-in-node="0">Global Expansion:</strong> 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).</p> </li> </ul> <h3 data-path-to-node="11"><strong data-path-to-node="11" data-index-in-node="0">Qualifications &amp; Skills</strong></h3> <h4 data-path-to-node="12"><strong data-path-to-node="12" data-index-in-node="0">Required:</strong></h4> <ul data-path-to-node="13"> <li> <p data-path-to-node="13,0,0"><strong data-path-to-node="13,0,0" data-index-in-node="0">Core Backend:</strong> Proven expertise in <strong data-path-to-node="13,0,0" data-index-in-node="34">Java</strong> and <strong data-path-to-node="13,0,0" data-index-in-node="43">Spring Boot</strong> for building scalable RESTful APIs and enterprise microservices.</p> </li> <li> <p data-path-to-node="13,1,0"><strong data-path-to-node="13,1,0" data-index-in-node="0">Cloud &amp; Infrastructure:</strong> Hands-on experience with <strong data-path-to-node="13,1,0" data-index-in-node="49">Google Cloud Platform (GCP)</strong> or other major public cloud environments.</p> </li> <li> <p data-path-to-node="13,2,0"><strong data-path-to-node="13,2,0" data-index-in-node="0">Event-Driven Architecture:</strong> Experience with <strong data-path-to-node="13,2,0" data-index-in-node="43">Apache Kafka</strong> or similar messaging systems for event-driven architectures and streaming pipelines.</p> </li> <li> <p data-path-to-node="13,3,0"><strong data-path-to-node="13,3,0" data-index-in-node="0">AI / Translation Tech:</strong> Experience integrating <strong data-path-to-node="13,3,0" data-index-in-node="46">LLMs, AI APIs</strong>, or <strong data-path-to-node="13,3,0" data-index-in-node="64">Machine Translation (MT)</strong> technologies and multilingual content workflows.</p> </li> <li> <p data-path-to-node="13,4,0"><strong data-path-to-node="13,4,0" data-index-in-node="0">Software Engineering Practices:</strong> Proficiency with Git, CI/CD pipelines, automated testing (unit, integration, e2e), code reviews, and Agile methodologies.</p> </li> <li> <p data-path-to-node="13,5,0"><strong data-path-to-node="13,5,0" data-index-in-node="0">Communication:</strong> Excellent technical communication skills with fluency in written and spoken English.</p> </li> </ul> <h4 data-path-to-node="14"><strong data-path-to-node="14" data-index-in-node="0">Preferred / Nice to Have:</strong></h4> <ul data-path-to-node="15"> <li> <p data-path-to-node="15,0,0">Prior experience building or maintaining <strong data-path-to-node="15,0,0" data-index-in-node="41">content management platforms (CMS)</strong>, digital publishing systems, or media workflows.</p> </li> <li> <p data-path-to-node="15,1,0">Experience evaluating LLM prompt engineering, fine-tuning, or MT quality estimation metrics (e.g., BLEU, COMET).</p> </li> </ul> <p><strong>What we offer:</strong></p> <ul> <li>A High-Impact Environment</li> <li>Commitment to Professional Development</li> <li>Flexible and Collaborative Culture</li> <li>Global Opportunities</li> <li>Vibrant Community</li> <li>Total Rewards</li> </ul> <p>&nbsp;</p> <p><em>*Specific benefits are determined by the employment type and location.</em></p> <p>Find out more about our culture&nbsp;<u><a href="https://www.instagram.com/wizelineglobal/" target="_blank">here</a></u>.</p>