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Software Engineer

Poland, Krakow · Job Posted February 16, 2026
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Job Description

Join BlackLine as a Full-Stack Software Engineer on the UI Platform team. You will contribute to the modernization of our enterprise web platform, working on both the React-based App Shell and the Java backend services that support it. This is a hands-on coding role where you will grow your skills in a complex, cloud-native environment. You will work closely with senior engineers to implement features, fix bugs, and improve the reliability of our platform infrastructure.

Job Responsibility

  • Develop and maintain scalable features across the stack - from Java microservices to React-based front-end shells - ensuring seamless inter-app communication
  • Contribute to the migration from legacy applications (.NET) to modern React-based solutions with micro-frontend App Shell architecture
  • Assist in configuring and monitoring CI/CD pipelines (Jenkins, GitHub Actions) and participate in cloud deployments using Terraform
  • Write clean, maintainable code adhering to solid OOP Write tests (unit tests, integration) to ensure high coverage and stability
  • Participate in code reviews, learn from senior mentors, and collaborate with other developers to resolve full stack issues
  • Help debug issues across the stack, from browser console errors to backend API exceptions

Requirements

  • 2–4 years of professional experience in software development
  • Proficiency in Java and JavaScript/TypeScript with experience in React
  • Familiarity with major cloud platforms (AWS, Azure, or GCP) and an understanding of cloud-native development concepts
  • Solid understanding of the full SDLC, from analyzing stakeholder requirements to technical implementation
  • Strong problem-solving skills, attention to detail, and a proactive attitude towards learning new technologies like micro-frontends and cloud architecture

Nice to have

Familiarity with modern build tools (Webpack, npm) and CI/CD

What we offer

  • A technology-based company with a sense of adventure and a vision for the future
  • A culture that is kind, open, and accepting
  • A culture where BlackLiner's continued growth and learning is empowered
  • BlackLine offers a wide variety of professional development seminars and inclusive affinity groups to celebrate and support our diversity

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