Posted 2y ago

Senior Software Engineer

@ BlackLine
Krakow, Lesser Poland Voivodeship, Poland
OnsiteFull Time
Responsibilities:Build features, Collaborate with, Design architecture
Requirements Summary:Strong C# backend engineering; SaaS; AI tooling; CI/CD; observability; collaboration across teams.
Technical Tools Mentioned:C#, CI/CD, Infrastructure as Code, Observability, AI development tools
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Job Description

As one of the founding engineers of our new Engineering Hub in Krakow, you are joining at a moment that rarely comes twice in a career. You will be an early shaper of this hub's engineering culture, setting standards, mentoring future teammates, and leaving a mark on a product used by finance teams across the globe.

You will bring strong hands-on engineering skills and a growth mindset to a team that moves fast and takes quality seriously.

In our mission to deliver autonomous finance, you will leverage modern AI development tools like Claude and Cursor as force multipliers, shipping high-impact features on a mission-critical enterprise platform.

  • 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
  • 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.

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$1,000