Senior Software Engineer Job at BlackLine (Krakow)

Senior Software Engineer

BlackLine

Location:
Poland , Krakow

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Not provided

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Job Description:

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.

Job Responsibility:

Provide technical expertise and leadership in the design, development, and delivery of BlackLine’s products, while adhering to timelines, coding standards, requirements, and quality
Collaborate/lead on architect, design, develop, test, troubleshoot, debug, optimize, scale, maintain and improve software applications, driving the delivery of high-quality value and features to BlackLine’s customers
Develop functional and technical specifications, and test plans
Review others’ code
Develop and document functional and technical requirements
Collaborate with other team members and other teams on all the above
Design and communicate coding standards, architectural plans, solve complex design and architectural problems, create robust architectural solutions
Implement, refine, and enforce software development techniques to ensure that delivered features meet software integration, performance, security, and maintainability expectations
Research, test, benchmark, and evaluate new tools and technologies, and recommend ways to implement them in product development
Maintain high standards of software quality and technical excellence within the team by establishing good practices and habits and writing clean, testable, maintainable, and secure code
Be part of an Inspire a forward-thinking team of developers, acting as an agent of change and evangelist for a quality-first culture within the organization
Mentor and coach team members and guide them to solutions on complex design issues
Proactively identify issues, bottlenecks, gaps, or other areas of concern or opportunity and work to either directly affect change, or advocate for that change by working with peers and leadership to build consensus and take action
Perform critical maintenance, deployment, and release support activities, including occasional off-hours support
Act as a key technical partner and enabler for product-facing teams, providing guidance and support for effective platform adoption and integration
Modernize a key Platform in Blacklines Invoice to Cash, migration and evolving an existing PHP based solution to Microservice based .net platform

Requirements:

4/6+ years of experience with software development in general purpose programming languages including but not limited to C#, .NET, .NET Core
5+ years of hands-on experience in building Web Applications, SaaS products, and RESTful APIs
BS degree in Computer Science, or equivalent experience
Experience with front-end technologies (HTML, JavaScript, CSS, JavaScript Frameworks, etc.) is a plus
A solid computer science foundation including data structures, algorithms, and design patterns, with a proven track record of software design and architecture of complex systems
Experience with public cloud architectures (Azure, AWS or GCP) and cloud native services
Experience in service-oriented architecture and aspect-oriented programming
Experience as a technical influencer for highly scalable distributed system designs
Experience with container management solutions like Mesos, Kubernetes or Nomad
Experience with API gateway, identity management, authentication, messaging platforms (e.g: Kafka, SQS, RabbitMQ), workflow orchestration tools, job scheduling and search
Experience with multi-threading and concurrency
Experience as a technical lead on significant development initiatives
Superior analytical and problem-solving abilities
Proven experience implementing an experience layer or API ecosystem for complex systems
Demonstrated ability to implement API monitoring solutions for robust system performance and reliability
Expertise in implementing strong observability (logging, metrics, tracing) across distributed microservices architectures
Excellent written and verbal communication skills
Adaptable team player with strong collaboration skills and a focus on results and value delivery
Prior working experience in Scrum, or other Agile development methodologies, is preferred
Passion for engineering excellence through automation, unit testing, and process improvements

Nice to have:

Experience with front-end technologies (HTML, JavaScript, CSS, JavaScript Frameworks, etc.) is a plus
Prior working experience in Scrum, or other Agile development methodologies, is preferred

What we offer:

A technology-based company with a sense of adventure and a vision for the future
A culture that is kind, open, and accepting
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

Additional Information:

Job Posted:
February 16, 2026

Employment Type:

Fulltime

Work Type:

Hybrid work

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