Wizeline

Senior Backend Engineer (Java)

Wizeline
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3 hours ago
Barcelona, SpainSenior
H1B Sponsor

Responsibilities

  • Design, develop, maintain, and deploy scalable applications using Java.
  • Develop and integrate AI-powered agents using agent-based architectures and emerging AI technologies.
  • Design, implement, and optimize solutions using relational databases.
  • Design and deploy applications in cloud-based environments.
  • Build and maintain Docker-based services and microservices architectures.
  • Develop and maintain applications using Microsoft .NET and C# when required.
  • Troubleshoot technical issues, identify root causes, and implement solutions.
  • Maintain code quality, reliability, and performance.
  • Collaborate with engineering teams and communicate technical concepts to technical and non-technical stakeholders.
  • Contribute to CI/CD processes and continuous improvement of development practices.

Requirements

  • Bachelor’s degree in Computer Science, Engineering, or a related field.
  • 5+ years of professional software development experience.
  • Extensive experience and high proficiency in Java.
  • Significant experience with relational databases and cloud-based application deployment.
  • Hands-on experience coding and developing AI agents.
  • Experience with Docker and microservices technologies.
  • Professional experience with Microsoft .NET and C#.
  • Familiarity with CI/CD concepts and modern DevOps practices.
  • Advanced or fluent spoken and written English.
  • Preferred experience with AI tooling, LLMs, RAG solutions, AI agent architectures, agentic workflows, digital publishing, or agile and DevOps-oriented teams.

Benefits

  • Professional development opportunities
  • Flexible and collaborative culture
  • Global opportunities
  • Total rewards; specific benefits depend on employment type and location

Tech Stack

Wizeline

About Wizeline

1,001-5,000 employees

Wizeline, a global technology services provider, builds the best digital products and platforms at scale. We focus on measurable outcomes, partnering with our customers to modernize core technologies, mature data-driven capabilities, and improve user experience.