Senior AI Engineer – Translation & LLM Platform

Wizeline; Barcelona; On-site; EUR 65,000 - 90,000; Full time

Benefits offered by this job

High-Impact Environment

Professional Development

Flexible Culture

Global Opportunities

Vibrant Community

Total Rewards

Job summary

Wizeline in Barcelona seeks an experienced software engineer to design and build scalable translation platforms using Java, Spring Boot, and REST APIs. You will integrate AI-powered translation features, develop backend services, and implement event-driven architectures with Kafka.

You will work with cross-functional teams to deliver reliable, multilingual content-processing solutions and contribute to CI/CD, testing, and production operations in a dynamic, global company.

Qualifications

• Bachelor's or Master's degree in Computer Science, Engineering, Data Science, or a related STEM field, or equivalent practical experience.
• 4+ years of professional software engineering experience, with strong experience developing enterprise applications using Java and Spring Boot.
• Strong experience designing and developing REST APIs and microservices.
• Hands-on experience with cloud-based application development, preferably on Google Cloud Platform (GCP).
• Practical experience with Apache Kafka or similar event-driven messaging technologies.
• Experience developing or integrating LLM/AI-powered applications and APIs in production or enterprise environments.
• Experience with machine translation, multilingual content processing, NLP, or related AI-driven content technologies.
• Strong understanding of software engineering practices, including Git, CI/CD, automated testing, code reviews, and Agile methodologies.
• Experience integrating applications with existing enterprise platforms, APIs, and third-party services.
• Ability to troubleshoot production issues and contribute to monitoring, logging, performance optimization, and operational support.
• Strong written and verbal English communication skills, with the ability to communicate effectively with technical teams and stakeholders.

Responsibilities

• Design, develop, and enhance scalable content and translation platforms using Java and Spring Boot, REST APIs, and microservices architectures.
• Build and integrate LLM- and AI-powered translation capabilities into enterprise content-processing workflows.
• Develop reliable APIs and backend services for translation requests, processing, and results, ensuring scalability, performance, and maintainability.
• Integrate with AI/LLM and machine-translation providers, evaluating opportunities to improve translation quality, scalability, cost, and latency.
• Design and implement event-driven architectures using technologies such as Apache Kafka to support high-volume content-processing pipelines.
• Integrate translation and content services with existing enterprise platforms, APIs, and downstream systems.
• Develop solutions for multilingual content processing, supporting multiple languages, content types, and international publishing requirements.
• Implement robust error handling, retries, monitoring, logging, alerting, and other operational capabilities required for reliable production systems.
• Develop automated tests and validation mechanisms to ensure the quality and reliability of translation workflows and services.
• Contribute to performance and scalability improvements as content and translation volumes increase.
• Support production deployments, troubleshooting, incident resolution, and ongoing operational improvements.
• Collaborate closely with engineering, product, and client stakeholders to define technical solutions, participate in design discussions, and translate business requirements into scalable software.
• Contribute to technical documentation, code reviews, CI/CD practices, and engineering standards.
• Help evolve the platform architecture to support future international expansion, additional languages, and new content types.
• Stay current with developments in GenAI, LLMs, machine translation, multilingual NLP, cloud technologies, and distributed systems, applying relevant practices to production solutions.

Skills

Java

Spring Boot

REST APIs

Microservices

Kafka

LLM/AI integrations

NLP

CI/CD

Agile

Git

Education

CS/Engineering degree

Tools

Google Cloud Platform

Kafka

Docker

Job description

Wizeline in Barcelona seeks an experienced software engineer to design and build scalable translation platforms using Java, Spring Boot, and REST APIs. You will integrate AI-powered translation features, develop backend services, and implement event-driven architectures with Kafka.

You will work with cross-functional teams to deliver reliable, multilingual content-processing solutions and contribute to CI/CD, testing, and production operations in a dynamic, global company.