Java Staff Software Engineer

Predictive Revenue System, enabling humans and AI to work together to make smarter decisions and drive consistent growth.
With thousands of customers using our platforms every day, we have an unmatched view into how revenue is actually won — the Revenue Context that reveals what happens, when, and with what outcome. This gives us a unique opportunity to transform an entire category and set a new benchmark for how modern revenue teams operate.
Join us to help transform how companies around the world run revenue — and build the platform that will guide leading revenue teams into the future.
About the Team The Engineering Team at Clari is deeply committed to building an enterprise-grade platform that serves as the backbone for our customer's most critical business process - Revenue. With an unrelenting commitment to innovation, our mission is to craft the ultimate revenue intelligence platform for our customers. Rooted in Agile principles, we foster a culture of adaptability and efficiency across all our teams. If you're energized by the prospect of contributing to a dynamic environment that emphasizes collaboration, continuous improvement, and leveraging the forefront of technology to address customer needs, we would love to meet you.

About the Role We're looking for a Staff Backend Engineer with deep expertise in building scalable, reliable, and performant backend systems. You'll design and evolve core services that power Clari's Revenue Platform, collaborating closely with frontend, mobile, data, and quality engineers to deliver exceptional products.
As a Staff Engineer, you'll shape architectural decisions, influence best practices, and mentor others while driving initiatives that raise the bar for reliability, observability, and engineering excellence. This role offers an opportunity to impact both product and platform — building systems that handle billions of data points and power mission-critical insights for global customers.
This is a fully remote opportunity and can be worked from any location in Poland. Candidates must be based in Poland and be able to travel to the office in Kraków as needed. Responsibilities

• Design, build, and maintain APIs, microservices, and distributed systems that power Clari's Revenue Platform
• Define and evolve service interfaces that are robust, easy to extend, and used across multiple client-facing teams
• Partner with product managers, designers, and other engineers to build new features end to end
• Lead or contribute heavily to large-scale, cross-functional projects with significant business impact
• Debug complex production issues across multiple services and levels of the stack
• Drive improvements in observability, scalability, and system reliability
• Mentor engineers across teams, helping them grow their technical and architectural skills
• Raise the bar for engineering standards, code quality, and operational excellence

Qualifications

• 8+ years of experience building backend systems with Java or a similar object-oriented language
• Strong understanding of distributed systems, data modeling, and system design
• Experience with modern messaging and streaming technologies (e.g., Kafka)
• Familiarity with relational and NoSQL databases (PostgreSQL, MongoDB, etc.)
• Experience with cloud infrastructure (preferably AWS) and CI/CD pipelines
• Focus on building observable, maintainable, and scalable systems
• Clear communicator who enjoys collaborating across teams and mentoring others

Perks and Benefits @ Clari

• Team-bonding activities and company-wide events
• Flexible working hours 
• Annual Well-being and Professional Development Stipends
• Private Healthcare and Multisport Pass
• Paid maternity and paternity leave

#BI-Remote #LI-Remote
At Clari + Salesloft, we are committed to creating an inclusive and supportive workplace where everyone belongs and can thrive. We focus on culture add, not culture fit, and believe our teams are made stronger by the unique perspectives, experiences, and identities each person brings.
We are proud to be an Equal Opportunity Employer and provide employment opportunities to all employees and applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, pregnancy, or any other characteristic protected by law.
If you're excited about this role even though your experience may not perfectly match every requirement, we encourage you to apply. We are actively hiring across multiple geographies and would love to welcome passionate, curious, and mission-driven individuals to our growing team. Explore our open roles and consider joining us
Please note that all official communication regarding job opportunities at Clari + Salesloft will come from an or email address. If you receive messages on LinkedIn or other job platforms claiming to be from Clari + Salesloft, they may not be legitimate. To verify the authenticity of any job-related communication, please visit our official Careers site.
Please note: We may use an AI notetaker in our interviews so we can focus on the conversation. The notes are private and used only for our hiring process. To opt out, please contact your recruiter. It won't affect your experience. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

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