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(Senior) Java Developer - Freelance

1 month, 2 weeks ago
Remote
Contract
Senior
Backend Engineer
Software Development
AWS Azure CI/CD GCP Java Kotlin MongoDB MySQL PostgreSQL Scala
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Netguru

Netguru

Netguru: Europe's top digital consultancy, shaping revolutionary digital products for leading brands with expertise in software and mobile development.

Internet Software & Services
251-1K
Founded 2008
View All Jobs 31

Description

  • Design and build scalable backend systems for processing large volumes of spare parts data.
  • Develop and maintain high-performance APIs for data integration and access.
  • Build, optimize, and maintain ETL pipelines for data ingestion and transformation.
  • Process and manage large datasets in distributed environments.
  • Optimize system performance, latency, and throughput across backend services.
  • Improve database performance through indexing, schema design, and query optimization.
  • Collaborate with product managers, designers, engineers, and stakeholders to deliver scalable, data-driven solutions.
  • Ensure high standards of security, reliability, scalability, and maintainability.
  • Mentor and support other engineers in a senior-level role.
  • Stay current with modern backend technologies, architecture patterns, and engineering best practices.

Requirements

  • Strong commercial experience with JVM-based languages such as Java, Scala, or Kotlin.
  • Solid experience with relational databases, including PostgreSQL and MySQL.
  • Experience with NoSQL databases, preferably MongoDB.
  • Hands-on experience processing and managing large datasets.
  • Strong knowledge of scalable API design and backend architecture principles.
  • Experience designing distributed and high-performance systems.
  • Practical experience building ETL pipelines using standard data processing tools.
  • Experience with cloud platforms such as AWS, GCP, or Azure.
  • Strong understanding of performance optimization and low-latency systems.
  • Experience with database optimization, including indexing, schema design, and performance tuning.
  • Strong problem-solving and communication skills.
  • Senior-level mindset with the ability to mentor and support engineering teams.
  • English at C1 level.
  • Must be based in the European Union.

Benefits

  • 100% remote, flexible work.
  • Up to 30 EUR/hour rate.
  • 20 paid vacation days.
  • Work with an experienced team of developers.
  • Continuous development of hard and soft skills.
  • Dev-friendly processes including Continuous Integration, Continuous Delivery, Code Review, and bug bashes.
  • Long-term collaboration on challenging products across FinTech, B2B software, e-commerce, and more.

Interested in this position?

Apply directly on the company website

Apply Now

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