Windows Engineer - End-User Computing

Sentinel Labs seeks a Senior or Staff Windows Malware Researcher / Detection Engineer based in Poland. This position centers on protecting organizations from cyber threats by analyzing malicious software and advancing detection techniques. Role overview This role focuses on studying Windows-based malware and creating methods to identify and stop threats. The…

Role Overview SentinelOne is hiring a Senior Windows Identity Detection Engineer in Poland. This position focuses on investigating and identifying new identity threats within Windows environments. The work supports the security of millions of endpoints protected by SentinelOne’s platform and contributes directly to the company’s growing identity security division. What You Will Do Research and identify emerging identity-based threats targeting Windows systems. Develop behavior-based detection methods for attacks such as Pass-the-Hash, Silver Ticket, and MFA bypass. Build tools and proofs of concept (PoCs) to detect and help mitigate these attack techniques. Take responsibility for the end-to-end process: from initial research through to implementation of detection capabilities. Who Thrives Here SentinelOne values curiosity and a commitment to ongoing learning. Team members are encouraged to develop skills in AI tools and concepts, regardless of their role. Success comes from seeking out new solutions, experimenting thoughtfully, and applying insights to deliver better, faster, and smarter results. About SentinelOne SentinelOne operates at the intersection of AI and cybersecurity. The company’s platform brings together protection for endpoints, cloud, identity, data, and AI systems, enabling autonomous detection and response. With real-time analytics and intelligent automation, SentinelOne aims to reduce noise and complexity so security teams can focus on what matters most.

Our MissionAt SentinelOne, our mission is clear: to empower those who safeguard our future. In an era where AI is transforming how businesses operate and innovate, the imperative to secure these advancements is more crucial than ever. Joining SentinelOne means contributing to the protection of global enterprises, critical infrastructure, and the innovative technologies of tomorrow. If you thrive on meaningful challenges and aspire to make a tangible global impact, you will find your purpose here.About UsSentinelOne stands at the forefront of AI-driven security solutions, redefining the cybersecurity landscape. Our AI-native platform integrates protection across endpoint, cloud, identity, data, and AI systems, enabling autonomous detection and rapid response. By leveraging real-time analytics and intelligent automation, we eliminate unnecessary noise, streamline complexities, and empower security teams to focus on what truly matters.Our team comprises passionate builders, problem-solvers, and innovators dedicated to shaping the future of security. If you're excited about tackling challenging problems alongside a talented and mission-driven team, we invite you to help us create a safer tomorrow for all.What We Are Looking ForWe seek individuals who are insatiably curious and committed to ongoing learning. As AI continues to transform our operations, we equip every team member, regardless of their role or level, with the knowledge to leverage AI tools and concepts. Those who excel here actively pursue innovative solutions, thoughtfully experiment, and apply their insights to achieve better, faster, and smarter outcomes.As a Windows Low Level Engineer for Endpoint Security, you will be instrumental in designing and developing cutting-edge security features for SentinelOne’s Windows endpoint protection platform, functioning in both user-mode and kernel-mode environments. You will construct and optimize essential components such as anti-tampering measures, network sensors, and agent infrastructure, while tackling complex performance and stability issues at scale. Your role will involve researching Windows internals and diagnosing deep system challenges, collaborating with distributed engineering teams to deliver impactful security solutions that safeguard millions of devices globally.

Join our dynamic team at HelloFresh in Warsaw, where we are revolutionizing the food experience through technology. As part of HelloTech, our global tech backbone comprised of over 1000 professionals, you will be instrumental in crafting digital products that enhance our offerings, from meal kits and ready-to-eat meals to specialty options like pet food and premium meat & seafood.Our direct-to-consumer subscription model is heavily reliant on technology at every stage, encompassing customer-facing applications, personalized recommendations, pricing strategies, supply chain optimization, and initiatives aimed at minimizing food waste. Although our brands operate independently to cater to diverse customer preferences, they are unified by shared platforms, data, and operational excellence fostered by HelloTech.HelloTech promotes autonomous, cross-functional teams, each managing specific products or domains comprehensively. By collaborating with our Warsaw office, you will contribute to the development of scalable, data-driven products utilized across 18 countries while engaging with a modern tech stack and international teams to enhance how customers discover, order, and enjoy HelloFresh products now and in the future.

Role Overview Housecall Pro is seeking a Senior Staff Engineer based in Poland. This role involves guiding the direction of our software solutions and supporting the growth of our engineering team. Senior Staff Engineers at Housecall Pro help set technical vision, drive complex projects, and share knowledge across the organization. What You Will Do Lead major engineering projects from concept to delivery Mentor and support junior engineers, sharing technical expertise and feedback Work closely with peers to improve our products and processes Contribute ideas that strengthen our technology and bring value to customers Location This position is based in Poland.

About the Role:Are you dedicated to designing and managing resilient, secure, and scalable IT infrastructures? Do you excel at tackling intricate challenges and ensuring that essential systems operate seamlessly? We invite you to become a pivotal member of our core IT team as a skilled and seasoned Windows Server Engineer. In this role, you will be instrumental in maintaining the health of our Windows environment, spearheading modernization efforts, and collaborating on innovative projects that define our technological framework.Your Mission:As a Windows Server Engineer, you will play a vital role in ensuring the stability and advancement of our server infrastructure. Your daily responsibilities will include:Infrastructure Guardian: Manage, maintain, and secure our comprehensive Windows Server environment to guarantee optimum uptime and performance.Proactive Troubleshooter: Monitor system health, anticipate potential issues, and employ your problem-solving skills to address complex challenges before they affect business operations.Modern Workplace Architect: Collaborate with other IT teams to design, implement, and integrate cutting-edge technologies and solutions that propel our company forward.Automation Advocate: Utilize your scripting expertise, particularly in PowerShell, to automate repetitive tasks, enhance workflows, and boost efficiency.Knowledge Custodian: Create and maintain thorough documentation for our server infrastructure, processes, and configurations, contributing to a valuable knowledge repository for the entire team.Security & Compliance Specialist: Support our security initiatives by assisting with internal and external audits, ensuring compliance with certification standards, and proactively addressing emerging security threats.Project Collaborator: Engage in IT projects, leveraging your technical knowledge to facilitate successful delivery and integration.

Join our innovative team at Box Inc. as a Senior Staff Architect in Workflow Engineering, where your expertise will lead the design and implementation of cutting-edge workflow solutions. You will collaborate with cross-functional teams to enhance our platform, ensuring scalability, performance, and optimal user experience. This role presents a unique opportunity to influence product direction and contribute to the overall success of our engineering initiatives.

Are you a skilled Operations Engineer with a passion for both Linux and Windows environments? At netcompany1, we are seeking an innovative professional to join our dynamic team in Warsaw. You will play a crucial role in maintaining and optimizing our operational systems while collaborating with cross-functional teams to enhance our infrastructure.

Location: Poland About Us:RTB House is a pioneering global technology company specializing in innovative marketing solutions for leading brands and advertising agencies around the globe. Our proprietary ad-buying engine stands out as the first in the world to utilize Deep Learning algorithms entirely, empowering advertisers to achieve exceptional results and meet their objectives throughout every stage of the marketing funnel. Your Role:As a Senior Technical Researcher/Engineer on our AdTech Technical Research Team, you will be instrumental in investigating and mastering the latest advancements in the advertising technology landscape. Your responsibilities will include conducting comprehensive research, testing novel technologies, and collaborating across various teams to determine their viability for integration into our systems. This position requires a unique combination of programming, research, and analytical skills to assess the effectiveness and practicality of diverse ad tech solutions. Qualifications: Minimum of 5 years of experience in a research or engineering role. Technical Proficiency: Strong programming skills with the ability to comprehend large-scale and intricate systems and architectures. Curiosity and Willingness to Learn: Eagerness to embrace new challenges and technologies while continuously enhancing knowledge in the ad tech sector. Independence & Proactiveness: Capability to take initiative and make informed decisions with minimal oversight while upholding high standards. Goal-Oriented Mindset: Focused on achieving specific project objectives and adaptable in a fast-paced environment. Collaborative Communication: Proficient in effectively sharing knowledge and working alongside team members and external partners (e.g., major browser vendors, W3C, GitHub). Prototyping Skills: Ability to develop Proof of Concepts (PoCs) and experimental solutions to evaluate their effectiveness. Technologies & Projects You May Work With: Python, Java, Scala, TypeScript/JavaScript PyTorch, NumPy, Pandas Jupyter Notebooks BigQuery, GCP Browser Engines

Role Overview netcompany1 is hiring a Junior Operations Engineer to support both Linux and Windows systems in Warsaw. This entry-level position suits those ready to begin a career in IT operations. What You Will Do Assist with managing and maintaining Linux and Windows environments Work alongside senior engineers to troubleshoot technical issues Help implement solutions that improve system performance and reliability Contribute to ongoing projects within the operations team Who We’re Looking For Entry-level candidates interested in IT operations Willingness to learn and collaborate with experienced engineers Interest in both Linux and Windows platforms

Join our innovative team at Attio as a Staff Product Engineer, where you will play a pivotal role in designing and enhancing our product architecture. We are looking for a talented engineer who is passionate about building scalable solutions and has a strong understanding of product development. You will collaborate with cross-functional teams to deliver high-quality software that meets the needs of our diverse clientele.

About ElevenLabsAt ElevenLabs, we are revolutionizing the way technology interacts with humanity through cutting-edge AI research and innovative product development.Founded in January 2023, we launched our first human-like AI voice model and have quickly gained a user base of millions, along with partnerships with thousands of businesses, including industry leaders like Deutsche Telekom and Meta. Backed by renowned investors such as Andreessen Horowitz, ICONIQ Growth, and Sequoia, we have successfully raised $781 million in funding, achieving a remarkable valuation of $11 billion.Our expansion has led us to develop three core platforms:ElevenAgents, which allows businesses to deliver intelligent customer experiences through scalable voice and chat integrations.ElevenCreative, empowering creators and marketers to produce and edit speech, music, images, and videos in over 70 languages.ElevenAPI, providing developers with access to our advanced AI audio models.Our team's creativity and dedication drive all our initiatives. We comprise researchers, engineers, and operators, including IOI medalists and former founders. If you are passionate about making a positive impact and are willing to work hard, we want to hear from you.Our Work EnvironmentHigh-velocity: We prioritize rapid experimentation and autonomous teams, maintaining minimal bureaucracy.Impact-focused: We emphasize the significance of your contributions over job titles. No task is too small or too large.AI-first: Our operations leverage AI to achieve faster and higher-quality results across all departments.Excellence everywhere: We strive for excellence in everything we do, matching the caliber of our AI models.Global team: We value talent over location, fostering a diverse and inclusive workplace.What We OfferInnovative culture: Join a generational opportunity to shape the future of AI, working alongside a team that continually pushes boundaries.Growth paths: Be part of a dynamic environment with abundant opportunities to impact beyond your immediate responsibilities.Learning & development: We prioritize continuous learning and professional development.

At CreatorIQ, we are redefining the landscape of creator-led growth with our AI-native operating system, trusted by over 1,300 brands and agencies worldwide.Our mission is to infuse humanity into business and empower individuals to make a significant impact. Our core values—intentionality, excellence, collaboration, and kindness—guide our everyday endeavors. CreatorIQ has been recognized as one of the best companies to work for by BuiltIn LA and NY, named a Leader in The Forrester New Wave™: Influencer Marketing Solutions, and honored by G2 as a Leader and Best Customer Relationship. We take pride in our flexible work model that encourages both in-person and remote collaboration, fostering innovation and adapting to different work styles.Join our passionate and innovative team on this exciting journey to transform the industry!Staff Search EngineerAs a Staff Search Engineer, you will play a pivotal role in the design and continuous improvement of CreatorIQ’s real-time search platform, which serves as the backbone for creator discovery across 30 million profiles and billions of posts. Your responsibilities will include architecting and maintaining Elasticsearch clusters, developing high-performance APIs in Go, and ensuring that the platform is scalable, reliable, and responsive even at large scales.This position combines hands-on development with technical leadership, where you will contribute to architectural decisions and mentor engineers in building a fast, dependable, and impactful search experience for our clients.Primary Tech Stack: Go, Typescript, Elastic, AWS (Cloudwatch, SQS, Lambdas), MSSQL, AWS Redshift

About the Role Nord Security, the company behind NordVPN, is searching for a Senior Threat Intelligence Researcher in Warsaw. This role centers on advancing the security and privacy of millions of users through products like Threat Protection Pro and the NordLynx protocol. What You'll Do Lead research efforts to identify and analyze emerging threats to Nord Security products. Work closely with a multidisciplinary team that includes Data Science, Malware Research, Development, and Privacy specialists. Contribute to the development and improvement of threat intelligence feeds, heuristics, algorithms, and machine learning models. Share actionable insights with product, engineering, and public-facing teams to strengthen threat protection capabilities. Help shape the evolution of NordVPN’s Threat Protection features by setting high standards for research quality and collaboration. The Team The Threat Intelligence group brings together experts from several disciplines. The team focuses on delivering accurate, timely information about potential threats using a mix of data-driven approaches and technical expertise. Collaboration is key, team members combine their skills to protect user privacy and security at scale. Location This position is based in Warsaw.

About BoxBox (NYSE:BOX) is at the forefront of Intelligent Content Management, empowering businesses to enhance collaboration, oversee the complete content lifecycle, secure essential information, and revolutionize workflows through enterprise AI. Founded in 2005, Box simplifies operations for renowned global organizations like AstraZeneca, JLL, Morgan Stanley, and Nationwide. Our headquarters is located in Redwood City, CA, with additional offices spanning the United States, Europe, and Asia.Joining Box means you will play a pivotal role in advancing our platform. Content is the backbone of everyday operations, encompassing contracts, invoices, employee records, financial documents, product specifications, marketing materials, and more. Our mission is to infuse intelligence into content management and empower our clients to revolutionize workflows throughout their organizations. With the synergy of AI and enterprise content, there is a remarkable opportunity to reshape collaborative efforts, and at Box, you will be at the forefront of this evolution.Why Your Expertise is EssentialAt Box, we are redefining the collaborative landscape. Security is fundamental to our vision. We are expanding our Product & Platform Security Engineering team in Poland to work closely with our Assurance & Architecture Engineering teams based in the US. As a Staff Security Engineer, you will collaborate with a high-impact engineering team in Warsaw, focusing on scaling security measures and integrating AI into our security protocols across our platform and product stack.This position offers the chance to influence strategic direction and deliver tangible outcomes that safeguard millions of users.Your ResponsibilitiesContribute to a strategic roadmap that enhances Box’s security capabilities across various platforms and products.Develop and iterate on minimum viable products (MVPs) for security automation, including supply chain security, SDLC controls, and developer-centric guardrails.Collaborate with the Assurance & Architecture Team and cross-functional teams (Product, Platform, Cloud, SRE, Developer Experience) to integrate security into workflows and tools.Lead initiatives focused on automation and innovative security techniques.

Role Overview Renesas Electronics Corporation is hiring a Staff DevOps Engineer in Wrocław or Katowice. This role focuses on improving infrastructure and streamlining development processes across the organization. What You Will Do Work with teams from different disciplines to automate workflows Implement and maintain CI/CD pipelines Support system reliability and stability Impact Your experience will help Renesas deliver reliable solutions that address client requirements and support ongoing innovation.

Join rhoworld as a Senior Clinical Research Associate and take your career to the next level! This fully remote position allows you to contribute to cutting-edge clinical research projects from the comfort of your own home in Poland. As a key member of our team, you will be responsible for overseeing the clinical trial process, ensuring compliance with regulatory requirements, and collaborating with cross-functional teams to deliver high-quality research outcomes.

Join ClickUp as a Staff Frontend Engineer and play a crucial role in shaping our innovative software solutions. You will be responsible for developing and optimizing user interfaces that enhance user experience and drive engagement. Collaborate with a talented team of engineers, designers, and product managers to deliver top-notch features that meet our users' needs.

Join HelloFresh in Warsaw as part of our innovative HelloTech team, which serves as the global technology backbone for our organization, comprising over 1,000 dedicated professionals. Together, we create cutting-edge digital products that enhance our comprehensive food experience. From meal kits to ready-to-eat meals, and even specialty items like pet food and premium meat & seafood, HelloTech is instrumental in delivering personalized food solutions to millions of customers every month. Our subscription-based, direct-to-consumer model relies heavily on technology at every stage. This includes everything from customer-facing applications and personalization algorithms to pricing strategies, forecasting, supply chain optimization, and initiatives aimed at minimizing food waste. While our various brands operate independently to meet unique customer needs, they are unified by shared platforms, data, and operational excellence facilitated by HelloTech. At HelloTech, we operate within autonomous, cross-functional teams, each responsible for a specific product or domain from conception to implementation. By collaborating with our Warsaw office, you will play a pivotal role in developing scalable, data-driven products utilized across our markets, leveraging a modern tech stack and working alongside international teams to continually enhance how customers discover, order, and enjoy HelloFresh products, now and in the future.