Senior Software Engineer

blackline· BlackLine Sp. Z.o.o. (Poland)
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📍 KrakowFull time💰 PLN 254K–318K

About this role

Make Your Mark:

BlackLine¯SaaS is the system of interaction for finance and accounting teams and it integrates with numerous ERPs, CRMs, Payment systems, Point of Sale systems and other applications.   Join BlackLine as a Senior Full-Stack Engineer on the UI Platform team. In this role, you will be responsible for building and maintaining the core App Shell and the services that power our micro-frontend ecosystem. You will operate as a bridge between domains, implementing robust backend logic in Java and sophisticated UI orchestration in React. You will help define integration strategies and ensure our platform leverages modern cloud capabilities, enabling other product teams to ship value faster and more securely.

You'll Get To:

  • Component Development: Design and implement scalable features across the stack
  • from Java microservices to React-based front-end shells
  • ensuring seamless inter-app communication.
  • Modernize & Migrate: Execute migration from legacy applications (.NET) to modern React-based solutions with micro-frontend App Shell architecture.
  • Cloud & Platform Implementation: Build and maintain cloud-native infrastructure and deployment pipelines using Terraform, Jenkins, and GitHub Actions.
  • Quality & Standards: Write clean, secure, and testable code. Implement comprehensive testing strategies (Unit, Integration) using tools like JUnit for backend and Jest/Vitest/Playwright for front-end.
  • Mentorship: Mentor junior engineers, conduct code reviews, and contribute to the team's knowledge base regarding full stack best practices.

What You'll Bring:

  • Experience: 4-8 years of professional experience in full stack software development.
  • Core Technologies: Strong expertise in Java (OOP) and React with TypeScript
  • Cloud Proficiency: Solid experience with major cloud platforms (AWS, Azure, or GCP) and experience utilizing cloud-native services (serverless, managed databases, container orchestration).
  • SDLC Ownership: Experience managing the lifecycle from translating stakeholder requirements into technical specifications through to final delivery.
  • DevOps Mindset: Hands-on experience with CI/CD tools (Jenkins, GitHub Actions) and operating in a DevOps Soft Skills: Ability to work independently on complex tasks, estimate deliverables accurately, and collaborate effectively in an agile environment

We’re Even More Excited If You Have:

Micro-Frontend Experience: Experience with or working knowledge of micro-frontend architectures (Webpack Module Federation) and modern build tools (Vite, Rollup).


Salary Range
PLN 254,000.00 - 318,000.00 /Yr.

Thrive at BlackLine Because You Are Joining:


  • A technology-based company with a sense of adventure and a vision for the future. Every door at BlackLine is open. Just bring your brains, your problem-solving skills, and be part of a winning team at the world's most trusted name in Finance Automation!
  • A culture that is kind, open, and accepting. It's a place where people can embrace what makes them unique, and the mix of cultural backgrounds and varying interests cultivates diverse thought and perspectives.
  • 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.

BlackLine is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity or expression, race, ethnicity, age, religious creed, national origin, physical or mental disability, ancestry, color, marital status, sexual orientation, military or veteran status, status as a victim of domestic violence, sexual assault or stalking, medical condition, genetic information, or any other protected class or category recognized by applicable equal employment opportunity or other similar laws.


BlackLine recognizes that the ways we work and the workplace itself has shifted. We innovate in a workplace that optimizes a combination of virtual and in-person interactions to maximize collaboration and nurture our culture. Candidates who live within a reasonable commute to one of our offices will work in the office at least 3 days a week.

Accommodations:

BlackLine is committed to creating an inclusive and accessible experience for all candidates. If you require a reasonable accommodation that would better enable your success during the application or interview process, please complete this form.

Frequently Asked Questions

What is the salary for the Senior Software Engineer role at blackline?
The listed salary for this Senior Software Engineer position at blackline is PLN 254K–318K. This is an Full time role.
Where is the Senior Software Engineer position at blackline located?
This Senior Software Engineer role at blackline is based in Krakow. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Senior Software Engineer role at blackline full-time or part-time?
This is listed as a Full time position. It is posted as a Senior Software Engineer role in the BlackLine Sp. Z.o.o. (Poland) department at blackline.
Which team or department does the Senior Software Engineer at blackline belong to?
This Senior Software Engineer position is part of the BlackLine Sp. Z.o.o. (Poland) department at blackline. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Senior Software Engineer position at blackline?
Click the "Apply Now" button on this page. You will be redirected to blackline's official application portal hosted on workday where you can submit your application directly.
When was the Senior Software Engineer job at blackline posted?
This Senior Software Engineer position at blackline was posted on Jul 20, 2026. Apply as soon as possible — early applications are often reviewed first.
Senior Software Engineer
blackline · 💰 PLN 254K–318K
Apply for this role ↗

You'll be redirected to blackline's official application page on Workday.