QA Performance Engineer (YouTrack)

Veeam is the Data and AI Trust Company, specializing in helping organizations ensure their data and AI are fully understood, secured, and resilient to enable the acceleration of safe AI at scale. As the market leader in both data resilience and data security posture management, Veeam is built for the convergence of identity, data, security, and AI risk. Headquartered in Seattle with offices in more than 30 countries, Veeam protects over 550,000 customers worldwide, who trust Veeam to keep their businesses running. Join us as we go fearlessly forward together, growing, learning, and making a real impact for some of the world’s biggest brands. ABOUT THE ROLE The Veeam Quality Assurance team invites you to work on Veeam products with Veeam QA professionals in the Warsaw R&D office. As a Performance QA Engineer, you will work on large-scale, real-world backup and data protection scenarios used by enterprises worldwide. Your work will directly influence the scalability, reliability, and performance of Veeam products running in some of the most demanding environments. WHAT YOU'LL DO * Design and execute performance, load, and scalability testing for major components of Veeam products (from requirement analysis and lab design to test execution and results analysis) * Build and maintain realistic enterprise grade test environments, including large infrastructures and complex topologies * Identify performance bottlenecks and system limits, and work closely with developers, functional QA, and product managers to resolve them * Participate in root cause analysis of performance issues reported by Technical Support and customers * Own and evolve performance test labs: environment creation, configuration, monitoring, and collaboration with IT teams WHAT YOU'LL BRING  * Technical education or a strong, hands on passion for systems and performance * 1–2 years of experience in performance and/or load testing (or a strong practical background in system performance) * Ability to analyze test results and clearly identify bottlenecks, limits, and performance risks * Solid knowledge of Windows and/or Linux at an advanced user or system administration level * Good understanding of system internals: CPU, memory, storage, networking * Strong analytical mindset, attention to detail, and structured thinking * Motivation to grow as a performance and scalability engineer * English proficiency for daily communication within international teams BONUS SKILLS * Experience with databases (Microsoft SQL Server, PostgreSQL), including profiling and performance analysis * Scripting, test automation, or infrastructure deployment experience * Understanding of virtualization platforms and large virtual environments * Hands on experience with cloud platforms (Azure, AWS, Google Cloud) * Experience with Python * Familiarity with Ansible, Terraform, or similar infrastructure as code tools WHAT YOU'LL GET * 26 paid days off annually, plus 4 extra global VeeaMe Days for self-care and 24 paid volunteer hours annually through Veeam Cares * Paid parental, maternity, and paternity leave * Fully covered family medical plan, dental, rehab, and vaccinations * Life, critical illness, and disability insurance * Employer pension contribution via PPK * Monthly Edenred allowance of 450 PLN for meals * MultiSport card fully covered by Veeam, giving access to sports facilities nationwide * Up to 12 free therapy sessions annually, plus legal and financial advice * Opportunities to learn and grow through on-demand libraries (LinkedIn Learning, O’Reilly), mentoring, workshops and learning events like our annual Global Day of Learning #LI-YS1 #Hybrid Veeam Software is an equal opportunity employer and does not tolerate discrimination in any form on the basis of race, color, religion, gender, age, national origin, citizenship, disability, veteran status or any other classification protected by federal, state or local law. All your information will be kept confidential. Personal data collected during the recruitment process will be processed in accordance with our Recruiting Privacy Notice [https://www.veeam.com/legal/recruiting-privacy-notice.html], which explains how your information is collected, used, and handled in connection with hiring activities. By applying for this position, you consent to this processing.  By submitting your application, you confirm that the information provided, including any supporting documents, is complete and accurate to the best of your knowledge. Any misrepresentation, omission, or falsification may result in disqualification from consideration or, if discovered after employment begins, termination of employment.

Join Proton and build a better internet where privacy is the default At Proton, we believe that privacy is a fundamental human right and the cornerstone of democracy. Since our inception in 2014, founded by a team of scientists from CERN, we have dedicated ourselves to providing free and open-source technology to millions worldwide, ensuring access to privacy, security, and freedom online. Our journey began with Proton Mail, the largest secure email service globally, and has since expanded to include Proton VPN, Proton Calendar, Proton Drive, and Proton Pass. These tools empower individuals and organizations to take control of their personal data, break away from Big Tech’s invasive practices, and defeat censorship. Our work impacts hundreds of millions of lives, from activists on the front lines defending freedom to leaders in governments protecting sensitive information. In some cases, Proton’s services have even been instrumental in saving lives by enabling secure and private communications in high-risk situations. Proton is a profitable company that does not rely upon VC funding, supporting over 100 million user accounts with a growing team of over 500 people from over 50 different countries, from the world's top companies and universities. We value intelligence, learning potential, and ambition in our hiring process. Adaptability is key as we navigate uncharted territories and redefine how business is conducted online. Hiring at Proton is highly selective, with less than 1% of candidates hired. We believe smaller teams of exceptional talent will always prevail over larger teams with lower talent density. You will have the opportunity to work with many of the world's top minds in their fields, ranging from former international math and science olympiad winners to chess champions. We have a global mindset and big ambitions but remain a start-up at heart. We value empowerment and flexibility and keep our structure flat to keep moving fast and avoid unnecessary politics. Tired of blending into the crowd? Join us and do work you can truly be proud of. Check our open-source projects here! The team: Proton VPN enables millions of people to connect securely and privately, even in places where the internet is restricted or unreliable. Delivering that experience means our service must perform flawlessly under highly variable, real-world conditions. We are looking for a Senior Performance Engineer to lead our efforts in making Proton VPN the fastest, most resilient, and most reliable VPN service in the world. You will define and drive the measurement, analysis, and optimization of Proton VPN’s end-to-end performance, across clients, platforms, and global infrastructure. You’ll help ensure that every connection is fast, stable, and private, regardless of where the user is or what network they’re on. What you will do:  * Design and own Proton VPN’s performance framework, defining metrics and KPIs that reflect the real-world experience of users (time-to-connect, throughput, latency, stability, reconnection rates, etc.). * Develop distributed testing systems that simulate real network conditions, including low bandwidth, packet loss, and high-latency scenarios. * Continuously measure and analyze performance across platforms (desktop, mobile, backend) and regions to identify bottlenecks and regressions. * Collaborate with backend, R&D, and client teams to optimize protocol handling, connection setup, routing, and encryption performance. * Create dashboards, reports, and automated alerts to track global performance health. * Contribute to the design of resilient connectivity strategies that adapt dynamically to variable network conditions. * Serve as the performance champion within the engineering organization, mentoring others and driving a data-driven performance culture. Job requirements:  Technical Skills * 5+ years of experience in performance engineering or systems QA, ideally in networking, VPNs, or distributed systems. * Knowledge of network protocols (TCP/IP, UDP, TLS, WireGuard, debugging, manipulating, and performance profiling tools. * Proven ability to analyze latency, throughput, and stability metrics across multiple layers (client, OS, transport, application). * Proficiency in Python (or similar scripting language) * Familiarity with network emulation and simulation tools (e.g., tc/netem, iperf, IPTables/nfTables…). * Experience with monitoring and observability stacks (Grafana, Prometheus, Loki) and CI/CD pipelines. * Cross-platform experience with Linux, macOS, Windows, Android, and iOS preferred. Bonus points for:  * Experience with Rust/C/C++/System development Soft Skills * Analytical and methodical, yet creative in solving complex performance problems. * Comfortable working with uncertainty and non-deterministic conditions. * Collaborative mindset, able to work across client, infrastructure, and data teams. * Strong communication and documentation skills in English.   What We Offer * Office First: Collaboration is easier and more effective in person, which is why we have offices in Geneva, Zurich, Prague, Barcelona, Paris, London, Vilnius, Skopje, and Taipei. You can also enjoy working from home up to 30% of the time, while enjoying great company during our three core days in the office.  * Technology: We provide all the devices and software you need to excel in your role, ensuring you have the best tools at your disposal to achieve your goals. * Food: Lunch and snacks are provided by Proton every day at our offices. * Transport: We will always support our employees with transport costs through subsidizing public transport, bike allowances, or parking spaces based on your office location. * Stock Options: At Proton, we are all owners of the company and you get stock options when you join us. * Flexible Working: You can define your own working hours as long as it works with team meetings. * Learning and Development: We are committed to your professional growth. Proton offers various learning opportunities, including training programs, conferences and events, and continual learning. * Employee Benefits: Comprehensive health insurance plans, competitive retirement savings options, generous vacation and leave policies, and wellness programs. * Work that Matters: Proton is a community-first organization, started with the support of a crowdfunding campaign and built with community input. To this day, Proton’s only source of revenue is user subscriptions. Over 100 million people trust and support Proton, and we put our users and community first in everything we do. Read more about our impact here. Our Commitment to Diversity and Inclusion At Proton, we believe diversity drives innovation and strengthens our mission to provide privacy as a default for all. We are committed to fostering an inclusive environment where all individuals, regardless of race, ethnicity, gender, age, sexual orientation, physical ability, or socio-economic background, feel valued and empowered. We strive to create equal opportunities, promote open dialogue, and support continuous learning to ensure every voice is heard and respected. If you need any extra support or reasonable adjustments during the hiring process, please let your talent partner know. Candidate Privacy Notice When you apply for a position, refer a candidate, or are considered for a role at Proton Technologies AG (Proton, we, us, or our), your information is stored in Greenhouse, in accordance with their Service Privacy Policy. This information is used to evaluate your suitability for the posted position. We also retain this information for consideration for future roles that you may apply for or that we believe may align with your background and skills. If we no longer have a legitimate business need to process your information, we will either delete or anonymize it. Should you have any inquiries about how we use or manage your information, or if you wish to access, correct, or delete your data, please contact our privacy team at careers@proton.ch. Proton does not accept unsolicited resumes from any sources other than directly from candidates. We will not pay a fee for any placement resulting from an unsolicited offer, even if the candidate is subsequently hired by Proton. To learn more about our privacy policy, please visit our privacy policy page.   #LI-Onsite