{"id":952785,"url":"https://alion.io/job/wizeline-java-software-engineer-barcelona-hybrid","title":"Java Software Engineer - Barcelona (Hybrid)","company":{"id":685743,"name":"Wizeline","domain":"wizeline.ai","url":"https://alion.io/company/wizeline-3","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":79,"open_postings":34,"ghost_share":0.265,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":134,"computed_at":"2026-11-04T06:34:25Z"}},"role":"Backend","role_family":"Backend","seniority":null,"employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Barcelona, Spain"],"countries":["ES"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":42000,"max_usd":110000,"period":"year","method":"role_country_seniority_unknown","sample_n":100},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Apache Kafka","optional":false},{"name":"CI/CD","optional":false},{"name":"GCP","optional":false},{"name":"Git","optional":false},{"name":"Java","optional":false},{"name":"LLM","optional":false},{"name":"Rest API","optional":false},{"name":"Spring Boot","optional":false},{"name":"Fine-tuning","optional":true},{"name":"Prompt Engineering","optional":true}],"status":"live","first_seen_at":"2024-07-23T10:38:39Z","employer_posted_date":"2026-10-15","last_verified_at":"2026-11-04T05:43:48Z","board_verified":true,"closed_at":null,"days_open":833,"trust":{"level":"ghost","repost_count":1,"flags":["stale","company_stale"],"days_open":833},"description":"We are:\nWizeline, 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.\nWith the right people and the right ideas, there’s no limit to what we can achieve\nAre you a fit?\nWe are seeking a skilled Senior Java Software Engineer 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.\nYou 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.\nKey Responsibilities\nPlatform Development: Develop and enhance core translation services and backend applications using Java and Spring Boot.\n\nOptimization & Evaluation: Support direct integrations with translation providers; continually evaluate and improve translation quality, system scalability, cost efficiency, and latency.\n\nAPI & Event Pipelines: Build highly available, reliable REST APIs and Kafka-driven asynchronous pipelines for processing high-volume content and translation tasks.\n\nOperational Excellence: Implement end-to-end monitoring, logging, error handling, retries, automated testing, and validation mechanisms for complex translation workflows.\n\nScale & Performance: Drive performance tuning and architecture enhancements to handle increasing translation volumes seamlessly.\n\nProduction Support: Assist with production deployments, CI/CD pipelines, system monitoring, and troubleshooting to ensure platform stability.\n\nCross-Functional Collaboration: Partner with cross-functional engineering teams, product managers, and key stakeholders on technical design, system architecture, code reviews, and documentation.\n\nGlobal 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).\n\nQualifications & Skills\nRequired:\nCore Backend: Proven expertise in Java and Spring Boot for building scalable RESTful APIs and enterprise microservices.\n\nCloud & Infrastructure: Hands-on experience with Google Cloud Platform (GCP) or other major public cloud environments.\n\nEvent-Driven Architecture: Experience with Apache Kafka or similar messaging systems for event-driven architectures and streaming pipelines.\n\nSoftware Engineering Practices: Proficiency with Git, CI/CD pipelines, automated testing (unit, integration, e2e), code reviews, and Agile methodologies.\n\nCommunication: Excellent technical communication skills with fluency in written and spoken English.\n\nPreferred / Nice to Have:\nPrior experience building or maintaining content management platforms (CMS), digital publishing systems, or media workflows.\n\nExperience evaluating LLM prompt engineering, fine-tuning, or MT quality estimation metrics (e.g., BLEU, COMET).\n\nWhat we offer:\nA High-Impact Environment\nCommitment to Professional Development\nFlexible and Collaborative Culture\nGlobal Opportunities\nVibrant Community\nTotal Rewards\n*Specific benefits are determined by the employment type and location.\nFind 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