# Java Software Engineer - Barcelona (Hybrid) at WIZELINE

> Spain · Unspecified · Backend · open. Source: https://alderhq.app/jobs/greenhouse%3Awizeline%3A6128467 (read 2026-11-08).

## Facts (observed)

- Company: [WIZELINE](https://alderhq.app/companies/wizeline)
- Location text: Barcelona; Spain
- Where it can be done from (inferred): Spain (evidence: "Location: Barcelona; Spain")
- Posted: 2024-07-23 (838 days ago)
- First seen by alder: 2026-11-07 · last verified: 2026-11-08
- Reposted: 0 times · edited: 0 times
- Apply on the employer's site: https://www.wizeline.ai/careers/job?gh_jid=6128467
- Skills listed (inferred): Java, Kafka, GCP, LLMs, Distributed systems

## Pay and sponsorship

- Posted pay: not posted
- Market band for similar posted roles (Barcelona, n 4): p25 €58k, median €59k, p75 €61k

## Description (the employer's text)

### We are

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

### Are you a fit?

We 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.

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.

### 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

- A High-Impact Environment
- Commitment to Professional Development
- Flexible and Collaborative Culture
- Global Opportunities
- Vibrant Community
- Total Rewards
\*Specific benefits are determined by the employment type and location.

Find out more about our culture here.

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Data: alder (https://alderhq.app). Cite https://alderhq.app/jobs/greenhouse%3Awizeline%3A6128467 and the date you read it. Observed facts come from the employer's own listing; location reach, level, family and skills are inferences.