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KOR Financial Logo KOR Financial · IT - Software Development

Sr Back End Engineer for Streaming Data Platform

Romania · Job Posted March 24, 2026
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Job Description

Do you want to build a high-quality data platform that will innovate financial markets? Do you want to work for a company that uses modern techniques to achieve the best results for its clients while empowering and supporting you to realize your full potential? We are an experienced team of Spring committers, Kafka contributors, ex-Pivotal, Google, Apple engineers. If you want to know more, keep reading or reach out for a chat.

Job Responsibility

  • Designing and implementing the streaming data platform engine and SDK
  • Implementing new features for our range of web and streaming applications and data reporting capabilities
  • Be an active voice in the platform's build-out in regards to the technical choices and implementations
  • Working closely with the broader team to embrace new challenges and adapt requirements as we continue to grow and adjust priorities
  • Using Claude Code and other AI tools responsibly to boost productivity
  • Paired programming with a growing team of Back-end, Data, and Front-end Engineers

Requirements

  • A minimum of 8+ years of experience as a Back End Engineer
  • Experience with Java and Spring Boot
  • Experience with building and running applications on public cloud vendors like AWS
  • Working experience with one or more of the following technologies: Kafka, Kafka Streams processor API (not high-level DSL), DataBricks, EMR, DeltaFlow
  • Experience profiling, debugging, and performance tuning complex distributed systems
  • Willingness to closely collaborate by pairing
  • A firm reliance on unit testing and mocking frameworks with a TDD (Test Driven Development) mindset
  • Knowledge of OOP principles and modern development practices

Nice to have

  • Experience with horizontally scalable and highly available system design and implementation, focusing on performance and resiliency
  • Bachelor's Degree or higher in Engineering, Computer Science, or Information Technology, or similar through experience

What we offer

  • Competitive salary, great IT equipment, and expense allowance
  • Flexible working times
  • Fully remote, with fun social activities and gatherings
  • A span of control that matches your ambitions and skills
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