Staff I Software Engineer

Blackline SP ZOO; Kraków; On-site; PLN 336,000 - 420,000; Full time

Job summary

BlackLine is building its Krakow Engineering Hub and seeks a founding Staff Engineer to shape the architectural direction and culture of a growing team. You will lead technical decisions, set high standards, and drive the design of a scalable SaaS platform used by global financial operations.

You will leverage AI tooling to accelerate development, mentor engineers, and deliver high-impact features with a strong emphasis on performance, reliability, and security.

Qualifications

• Demonstrated expertise using AI-driven development tools to improve velocity and quality.
• Extensive experience architecting, building, and deploying production-grade SaaS applications.
• Strong proficiency in C# and deep understanding of software architecture, data structures, and algorithms.
• Proven track record leading cross-functional teams and driving complex projects.

Responsibilities

• Lead Technical Architecture: design scalable, robust SaaS solutions and drive long-term health of the codebase.
• Champion AI-accelerated development and promote agentic tools to speed design, coding, and testing.
• Build and ship high-impact features from concept to production in a mission-critical enterprise app.
• Collaborate with product managers, designers, and engineers to refine requirements and roadmaps.
• Ensure enterprise-scale performance, reliability, low latency, and security.

Skills

AI-driven development tools

C#

Technical leadership

Architectural design

CI/CD

Cross-functional collaboration

Tools

Cursor

Claude

Codex

Job description

Make Your Mark:

As the founding Staff Engineer for our newEngineering Hub in Krakow, you have a rare and foundational role with an outsized impact. You will be a cornerstone of this new venture, not just building software, but architecting its very future. This is a unique opportunity to shape the engineering culture, define the architectural direction of our products, and set thehigh standardsfor a world-class team that will be built around your leadership. As a forward-thinking leader in our mission to deliver autonomous finance, you willleveragemodern AI development tools like Claude and Cursor to accelerate innovation and solve complex problems at scale. This is your chance to builda lasting legacyand be a true pioneer withinBlackLine.

You'll Get To:

• Lead Technical Architecture: Design and implement scalable, robust, and maintainable solutions for our core SaaS platform. Drive technical decisions and ensure the long-term health of our codebase.
• Champion AI-Accelerated Development: Utilize and promote the use of agentic development tools (e.g., Cursor, Codex, Claude) to radically accelerate the design, coding, and testing lifecycle for your team.
• Build and Ship High-Impact Features: Take ownership of complex features from concept to production. Write clean, performant, and well-tested code for a mission-critical enterprise application.
• Collaborate on Product and Technical Roadmaps: Partner closely with product managers, designers, and other engineers to refine requirements, contribute to the technical roadmap, and deliver exceptional value to our customers.
• Engineer for Enterprise Scale: Ensure our systems are built with a relentless focus on performance, reliability, low latency, and security to meet the demands of a global user base.
• Mentor and Elevate: Act as a technical leader and mentor within the team. Elevate the engineering bar through code reviews, knowledge sharing, and establishing best practices.

What You'll Bring:

• Demonstrated expertise in using AI-driven development tools (e.g., Cursor, Claude) to significantly improve software engineering velocity and quality
• Extensive experience architecting, building, and deploying production-grade, scalable, and secure SaaS applications.
• Strong proficiency in C# is required, with a deep understanding of software architecture, data structures, and algorithms.
• Proven track record of technical leadership, with the ability to drive complex, cross-functional projects from ambiguous requirements to successful launch.
• A strong foundation in modern software development practices, including CI/CD, automated testing, and infrastructure-as-code.
• Deep familiarity with modern frameworks and libraries relevant to enterprise application development

We’re Even More Excited If You Have:

• Proven ability to translate complex business problems into simple, elegant technical solutions.
• Experience building software in a regulated industry, such as finance or accounting.
• A history of contributing to open-source projects or a passion for exploring new development paradigms.
• Knowledge of cloud-native technologies and experience building applications on platforms like AWS, Azure, or Google Cloud.
• Familiarity with the principles of Responsible AI and how to apply them in a software development context.

Salary Range

PLN 336,000.00 - 420,000.00 /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.