Senior Software Engineer

About the Position

Senior Software Engineer at BlackLine in Kraków, Poland

We are looking for a Senior Software Engineer to join our team in Kraków, Poland. As one of the founding engineers of our new Engineering Hub, you will play a pivotal role in shaping our engineering culture, setting standards, mentoring future teammates, and making a significant impact on a product used by finance teams worldwide.

Responsibilities

• Build and Ship High-Impact Features: Take full ownership of complex features from concept to production, writing clean, performant, and well-tested code for a mission-critical enterprise application.
• Embrace AI-Accelerated Development: Utilize agentic development tools (e.g., Cursor, Claude) to radically accelerate the design, coding, and testing lifecycle for your team.
• Drive Technical Design: Design and implement scalable, robust, and maintainable solutions for our core SaaS platform, ensuring the long-term health of our codebase.
• Collaborate and Influence: 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, and security to meet the demands of a global user base.
• Mentor and Elevate: Act as a technical leader and mentor within the team, elevating the engineering bar through code reviews, knowledge sharing, and establishing best practices.

Requirements

• Demonstrated expertise in using AI-driven development tools (e.g., Cursor, Claude) to significantly improve software engineering velocity and quality.
• Strong experience designing, building, and deploying production-grade, scalable, and secure SaaS applications.
• Proficiency in C# is required, with a deep understanding of software architecture, data structures, and algorithms.
• A proven track record of driving complex projects from ambiguous requirements to successful launch.
• A strong foundation in modern software development practices, including CI/CD, automated testing, and infrastructure-as-code.
• A strong observability mindset-logging, metrics, and distributed tracing across microservices.
• Excellent written and verbal communication skills; comfortable working across time zones.

Nice to 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.
• 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.

We Offer

• Opportunity to be a founding engineer of a new Engineering Hub.
• Work in a dynamic and innovative environment.
• Collaborate with a passionate team committed to delivering innovative solutions.
• Competitive compensation package.

About the Company

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.

Join us and make your mark in the world of enterprise software!