Principal Engineer - Service Engineer

This role is part of a larger transition and is planned as part of a separate team being created in Kraków. Role Summary As a Lead Engineer, you will own complex Data & Analytics solutions end-to-end—from shaping the initial strategy with enterprise customers to hands-on execution. In this role, you will act as a trusted advisor, translating business hurdles into scalable technical solutions. You will balance technical leadership and mentorship with hands-on development, writing production code and driving engineering excellence. This position offers high autonomy and is designed for a leader ready to track directly into a Principal Engineer role. Key Responsibilities - Customer & Solution Ownership: Partner directly with enterprise clients to discover business needs, design scalable Data & Analytics solutions, and build long-term technical trust. - Hands-on Leadership: Own technical design and architectural decisions. Lead the development of critical system components and write production-quality code. - Engineering Excellence: Set high standards for code quality, testing, and maintainability. Mentor delivery engineers and review their work to ensure top-tier performance. - Delivery & Integration: Oversee end-to-end implementation, data migration, and system enhancements, ensuring everything aligns with platform capabilities and timelines. - Cross-Functional Collaboration: Work closely with Product, Engineering, Architecture, and SRE teams to remove blockers and champion engineering best practices. Required Experience & Skills - Core Development: Strong hands-on Java backend experience, paired with good knowledge of Python for data and automation. - Architecture: Deep understanding of distributed systems, microservices, and cloud-native technologies (Kubernetes, Docker, CI/CD). - Data & Messaging: Robust experience with data platforms, streaming/event-driven systems (e.g., Kafka), and solid SQL skills (Relational and NoSQL). - Integrations: Proven track record of building and consuming RESTful APIs for mission-critical, high-availability enterprise systems. Lead-to-Principal Expectations - Independently manages complex systems and critical components under minimal oversight. - Comfortable navigating high-pressure, customer-critical environments. - Leads through technical authority, execution excellence, and active mentorship. - Demonstrates the strategic vision and technical depth required to quickly evolve into a Principal Engineer. Why This Role Matters You will ensure our most complex Data & Analytics solutions run flawlessly in the real world—directly protecting customer trust, driving platform adoption, and securing revenue realization. Work arrangements - Hybrid working mode; 3 chosen days from the office in a week - Flexible working hours: Maintain your work-life balance by adjusting your working hours to your needs Paid time off - Year-End-Break: enjoy additional fully paid days off during the last week of the year - Paid parental leave: Take up to 12 weeks off with pay after birth or adoption of a child. Sabre Global Paid Parental Leave runs concurrently with local leave policies. - Paid volunteer time: take up to 4 days annually to give your time to a charitable organization of your choice Your money - My Benefit platform/Multisport card: enjoy the benefit cafeteria system and use popular sport card - Tax deduction: take the opportunity to claim deductible costs, reducing your income tax - Employee Capital Plans: profit from long-term saving scheme co-financed by Sabre and the State Treasury - Baby Bonus: benefit from one-time allowance on childbirth or adoption - Say Thanks program: collect points on recognition program and transfer them to wide variety of gifts and services Health and wellness - Luxmed medical coverage: take care of yourself and your family with the extensive medical package with a broad range of additional services - Foreign travel insurance: feel safe going abroad with free Allianz insurance offered as part of our Lux Med package - Employee Assistance Program: find help in free, confidential program with a certified counselor - Mindfulness & meditation apps: take care of your mental and physical health - Life insurance: sign up for free, high coverage life insurance program Career development - Professional development: access to e-learning platforms as well as join Sabre live learning sessions - Certification and tuition reimbursement - Our Communities: join one of our team member groups focused on sharing knowledge and best practices (Google Developers Group, Innovation Lab Community, Women in Technology, SOLVE!T and many more) And more - Car and bike parking - Fun & Relax zone in modern office: enjoy electronic tables to work, foosball, ping pong, pool table, swings, massage chairs and terraces to admire a panoramic view of Kraków. We have parents’ rooms as well - No dress code - Innovation Lab: access Augmented Reality & Virtual Reality equipment, Robot construction kit, 3D printers and many more - Attractive Referral Bonus: earn $2500 USD for every hired referral