Staff Software Engineer

It’s fun to work in a company where people truly believe in what they’re doing!

At BlackLine, we’re committed to bringing passion and customer focus to the business of enterprise applications.

Since being founded in 2001, BlackLine has become a leading provider of cloud software that automates and controls the entire financial close process. Our vision is to modernize the finance and accounting function to enable greater operational effectiveness and agility, and we are committed to delivering innovative solutions and services to empower accounting and finance leaders around the world to achieve Modern Finance.

Being a best-in-class SaaS Company, we understand that bringing in new ideas and innovative technology is mission critical. At BlackLine we are always working with new, cutting edge technology that encourages our teams to learn something new and expand their creativity and technical skillset that will accelerate their careers.

This role is specifically for our AI-powered Invoice-to-Cash solution, a market-leading platform that uses intelligent automation to help companies collect cash faster, unlock working capital, and supercharge efficiency in their accounts receivable processes.

Work, Play and Grow at BlackLine!

As the founding Staff Engineer for our new Engineering 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 the high standards for a world-class team that will be built around your leadership. As a forward-thinking leader in our mission to deliver autonomous finance, you will leverage modern AI development tools like Claude and Cursor to accelerate innovation and solve complex problems at scale. This is your chance to build a lasting legacy and be a true pioneer within BlackLine.

• 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.

• 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

• 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.