Senior Software Engineer

Posted 5 Hours Ago
Be an Early Applicant
Kraków, Małopolskie, POL
Hybrid
254K-318K Annually
Senior level
Cloud • Fintech • Information Technology • Machine Learning • Software • App development • Generative AI
The platform delivering future-ready financial operations.
The Role
Build and maintain the core App Shell and services for a micro-frontend ecosystem. Implement backend Java microservices and React/TypeScript front-end shells, migrate legacy .NET apps, create cloud-native infrastructure with Terraform, and maintain CI/CD pipelines (Jenkins, GitHub Actions). Ensure code quality with JUnit and Jest/Vitest/Playwright, define integration strategies, and mentor junior engineers.
Summary Generated by Built In

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.

Skills Required

  • 4-8 years of professional experience in full stack software development.
  • Strong expertise in Java (OOP).
  • Strong expertise in React with TypeScript.
  • Experience with cloud platforms (AWS, Azure, or GCP) and cloud-native services (serverless, managed databases, container orchestration).
  • Hands-on experience with CI/CD tools (Jenkins, GitHub Actions).
  • Experience with testing frameworks: JUnit for backend and Jest/Vitest/Playwright for frontend.
  • Experience managing the software development lifecycle from requirements to delivery.
  • Ability to work independently on complex tasks, estimate deliverables, and collaborate effectively in an agile environment (soft skills).
  • Experience with micro-frontend architectures (Webpack Module Federation) and modern build tools (Vite, Rollup).
  • Experience migrating legacy .NET applications.

BlackLine Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about BlackLine and has not been reviewed or approved by BlackLine.

  • Healthcare Strength Company materials highlight company‑paid employee medical, dental, and vision insurance, plus comprehensive plan choices and wellness resources. Recent announcements and benefits guides reinforce broad, high‑value healthcare coverage.
  • Leave & Time Off Breadth Unlimited PTO is prominently featured in official communications and marked as employer‑verified on benefits listings. Materials also reference paid holidays, sick time, and flexibility that support time away.
  • Retirement Support A 401(k) with company match and an Employee Stock Purchase Plan are consistently listed across careers pages, plan documents, and filings. Guidance also highlights complementary financial benefits such as dependent care FSA support and tuition reimbursement.

BlackLine Insights

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The Company
HQ: Woodland Hills, CA
1,810 Employees
Year Founded: 2001

What We Do

BlackLine gives you the innovation of AI-powered software solutions you need to optimize workflows, reduce risk, and prepare for tomorrow’s strategic F&A challenges. BlackLine is the leader in the cloud financial close market and the first and only holistic solution to address intercompany operations. Companies can execute and manage financial close, intercompany, and invoice-to-cash processes with end-to-end transparency and intelligent automation. They can shift their focus from governance to guidance and deliver strategic business outcomes faster and with greater control. Since our founding in 2001, BlackLine has become a leading provider of cloud software that automates and controls critical accounting processes. BlackLine is ranked No.5 globally on The Software Report’s 2023 ‘Top 100 Software Companies’ list and earned ‘Top Rated’ awards in Accounting, Financial Close, and Accounts Receivable from TrustRadius. BlackLine was also named to Newsweek’s ‘Most Loved Workplaces’ lists in the US (2022) and UK (2023).  BlackLine is trusted by thousands of companies across all industries and geographies. Headquartered in Woodland Hills, CA, BlackLine is a global company with operations in locations including Pleasanton, New York, London, Paris, Bengaluru, Frankfurt, Tokyo, Singapore, and Sydney. Leading companies like SiriusXM and Domino’s trust BlackLine to close faster with complete and accurate results.

Why Work With Us

BlackLine is a female-founded company led by Therese Tucker, founder and co-CEO. BlackLine is a people-focused company offering a collaborative environment, exciting new challenges, opportunities to acquire new skills, and mentoring to help you succeed. We empower our teams to thrive and always seek new and innovative ways to solve problems.

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