Senior/Principal Data Engineer

Join Sigma Software Group as a Senior/Principal Data Engineer, where you will play a pivotal role in designing and implementing data-driven solutions that power our innovative projects. Your expertise in data architecture, ETL processes, and big data technologies will be essential as you collaborate with cross-functional teams to deliver high-quality data pr…

Join Asana, where our rapid growth presents exciting challenges in ensuring that our systems remain fast, reliable, and resilient. As we evolve our product, we are making a significant investment in reliability, and establishing a brand new Site Reliability Engineering (SRE) team in Warsaw is a crucial component of this strategy. This is a unique opportunity for you to help shape our SRE practice from the very beginning. This role transcends traditional operations; we seek skilled software engineers who are passionate about developing reliable, distributed systems. You will collaborate closely with a small SRE team in San Francisco, infrastructure engineers in Reykjavik, and our established infrastructure team here in Warsaw. Warsaw is poised to become a major hub for our future infrastructure engineering and operations. As one of the founding engineers in this office, you will have a substantial influence on how we construct reliable infrastructure, manage incidents, and support our broader company initiatives. This position is based in our Warsaw office with a hybrid schedule - in-office days are Monday, Tuesday, and Thursday. We provide a Contract of Employment (UoP) for our employees in Poland.

Location: Poland About Us: RTB House is a leading global company that specializes in providing cutting-edge marketing technologies for renowned brands and agencies worldwide. Our unique ad-buying engine stands out as the world's first fully Deep Learning-powered platform, enabling advertisers to achieve exceptional results and meet their objectives throughout every stage of the marketing funnel. We are currently seeking talented engineers to join our Platform Engineering team within the Bidding Platform structure. If you have a passion for system-related topics such as deployment, monitoring, databases, and load balancing, along with experience in leading complex project specifications and coordinating team efforts, we want to hear from you! This is an excellent opportunity for those eager to tackle technically challenging and sophisticated solutions.

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 RoleJoin Logz.io as a Backend Software Engineer and be part of a dynamic team that is reshaping the observability landscape. In this role, you will design and develop robust backend systems that scale effectively, ensuring seamless integration and exceptional performance.Key ResponsibilitiesDevelop and maintain scalable backend services and APIs.Collaborate with cross-functional teams to define, design, and ship new features.Troubleshoot and optimize existing systems for performance and scalability.Participate in code reviews and contribute to team knowledge sharing.

About The Dot CollectiveWe are a forward-thinking consultancy operating across the UK and EU, driven by engineering excellence and a commitment to empowering individuals to create meaningful impact.We utilize cutting-edge technology stacks and adhere to agile scrum methodologies for all our projects.About YouAre you driven by data and its ability to transform? Do you seek to make a significant impact in a short timeframe? If so, you might be the perfect fit for us.Your Key Skills and Capabilities:In-depth understanding of the Networking stack and its application within Cloud EnvironmentsProficient in minimizing toil through re-architecting or developing Python toolsCollaborate effectively with delivery teams to ensure reliable production servicesCreate observability solutions aligned with SLAs and SLOs, maintaining a clear error budgetSupport production systems by conducting root cause analysis and facilitating post-mortemsAssess architectural designs to enhance production stabilityOur Promise to YouWe prioritize your humanity and well-being, offering well-designed co-working spaces, flexible remote work arrangements, parental leave, sabbaticals, and opportunities to work on personal projects.We believe a cohesive team is invaluable, and we strive to maintain stable teams across projects, ensuring you work with trusted colleagues.We are committed to prioritizing your needs and well-being in all aspects of our work culture.

Join one of Poland's foremost telemedicine platforms as an AI Data Engineer, where you will be the architect of our analytics layer. Your role involves designing and implementing intelligent workflows that transform raw operational data into dynamic, self-validating reports. You will analyze business processes to determine which tasks can be automated using AI, then build and maintain these solutions. You'll be the driving force behind initiatives aimed at streamlining reporting, ensuring it aligns with AI capabilities, and shaping the future of our analytics.

Join Our Team in a Hybrid or Fully Remote Role!Our Vision At Uncapped, we aim to empower e-commerce businesses globally by transforming their data into immediate access to capital. Our engineering team plays a pivotal role in bringing this vision to life, orchestrating every credit decision, API integration with platforms like Amazon and Walmart, and automated underwriting processes. As we scale our loan book and extend our underwriting-as-a-service offerings, the caliber of our engineering organization will directly influence our growth rate and safety.Role Overview As the Head of Engineering, you will spearhead our engineering organization across six vital platform layers: Customer Engagement, Onboarding, Underwriting Automation, Core Financial Platform, Data Infrastructure, and GCP/Kubernetes-based platform engineering. Your responsibilities will include managing engineering managers, overseeing the overall technical architecture, and driving high-velocity execution necessary for a fast-growing fintech company.This dual-mandate role requires you to be deeply involved in system design and technical strategy while also cultivating a management framework that allows for scalable, high-quality operations. You will lead the team in seamlessly integrating AI tools as a fundamental productivity enhancer rather than an afterthought.About Uncapped Founded in 2019, Uncapped is a forward-thinking fintech company dedicated to providing working capital solutions for SMEs across North America and Europe. We utilize diverse data sources to expedite credit decisions, enhancing safety and convenience for our clients. Partnering with major platforms like Amazon and Walmart, we strive to be the premier alternative lender on a global scale.What You'll Do Lead Engineering Strategy & Team - Develop a high-performing engineering organization with over 15 engineers and engineering managers, fostering a culture of autonomy, quality, and effective communication across EU, UK, and US time zones. You will define engineering career frameworks, drive manager development, and set high hiring standards.Own Technical Architecture - Collaborate with the CTO to establish and enforce technical direction across the entire platform stack. Manage architecture reviews, uphold governance frameworks, and make critical decisions regarding build/buy/integrate, particularly as we modernize underwriting automation and onboard new marketplace data partners. You will proactively identify structural vulnerabilities to mitigate operational risks.Drive AI-Powered Productivity - Champion the organization's adoption of AI tools throughout the development lifecycle, including code generation, testing, documentation, and incident response. Set clear expectations and track progress in leveraging these tools effectively.

Join Sigma Software Group as a Principal Site Reliability Engineer and play a crucial role in ensuring the reliability, availability, and performance of our systems and services. You will work on complex challenges, drive improvements, and collaborate with cross-functional teams to build innovative solutions that enhance our operational capabilities.

Join the Vanguard of VPN Technology!At NordVPN, we are at the forefront of providing cutting-edge virtual private network solutions, offering more than just security. If you're a proactive innovator who enjoys tackling complex problems, we invite you to be part of our team developing Threat Protection Pro, the NordLynx protocol, and the fastest VPN globally—empowering users with enhanced privacy, security, and control.Your Contribution: Enable millions of users to reclaim their online security, privacy, and data.As a Senior Site Reliability Engineer, you will ensure content accessibility across our worldwide edge network. Your primary responsibility will be to guarantee that traffic reaches our users swiftly, reliably, and securely, no matter where they are located.You will navigate the realms of networking, load balancing, and traffic shaping. When issues arise—be it slowness, inaccessibility, or erratic behavior at the protocol layer—you will be the one to diagnose and resolve them.Key Responsibilities:Ensure seamless content accessibility across a globally distributed edge infrastructure.Design, operate, and enhance load balancing and traffic shaping systems at scale.Troubleshoot connection, latency, and accessibility issues end-to-end.Manage HTTP traffic flow from client to edge to origin and back.Investigate and rectify website and service reachability problems.Work across protocol layers to diagnose issues in depth.Core Qualifications:Proficient in load balancing and traffic shaping techniques—architecture, algorithms, health checks, and failover mechanisms.Experience with NGINX and/or HAProxy—configuration, tuning, and debugging in high-traffic environments.Solid understanding of networking fundamentals, including DNS, routing, firewalls, and packet analysis.Fluency in the OSI model—comfortable working across layers 3 to 7, with knowledge of TCP internals, SSL/TLS handshake, and termination.Experience with SaltStack.Linux administration skills.Proficiency in Python for automation, tooling, and scripting.Ability to troubleshoot network and application layer issues in large-scale production environments.

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.

Join CD Projekt Red as a Lead Engineer in Localization, where you'll play a pivotal role in shaping the internationalization of our games. You will lead a dedicated team, ensuring that our titles resonate with audiences worldwide. Your expertise in software engineering and localization practices will drive our projects forward, enhancing player experiences across diverse languages and cultures.

Role Overview Miratech is hiring a Senior Data Engineer in Warsaw. This position focuses on designing and building data architectures and pipelines to support the company’s data initiatives. The Senior Data Engineer works closely with teams across the business to maintain data quality and improve accessibility, helping drive informed decisions throughout the organization.

Join Palantir Technologies as an Edge Infrastructure Engineer, where you will play a crucial role in designing and implementing robust infrastructure solutions that power our cutting-edge technologies. You will work collaboratively with cross-functional teams to ensure the successful deployment of our software in various environments, enhancing the way organizations operate.

Join Saily, where we are revolutionizing mobile connectivity while you travel with our service that eliminates roaming fees and the need for plastic SIM cards, providing seamless, secure mobile data in over 200 destinations worldwide. With millions of customers and countless travelers engaged with Saily at any time, we are committed to delivering the best mobile experience.Our AI-native Product Engineering culture is designed for innovation:The Engineer takes ownership, managing projects from concept through to production.AI Agents support engineers by handling coding and repetitive tasks, enhancing productivity.Every team member is encouraged to suggest improvements, fostering a culture of constant enhancement.We prioritize curiosity, learning, and sharing knowledge.The comfort and connectivity of our customers is always our primary focus.At Saily, we emphasize growth over comfort, contribution over hierarchy, and impact over process, providing our talented team with the autonomy and AI tools necessary to excel in their roles.

Nearmap Ltd. is seeking a Senior Data Engineer to join its Engineering & Technology group in Warsaw. This team develops and refines systems that help organizations make better use of location data. Role overview The Senior Data Engineer will design and build data solutions tailored to business needs. The position involves maintaining data quality, ensuring process integrity, and collaborating with teams across the company to deliver actionable insights. What you will do Create and implement data solutions that align with business goals Monitor and enhance data quality and the reliability of data processes Partner with teams throughout Nearmap to provide valuable insights from data Requirements This position requires strong experience in data engineering, a commitment to quality, and an interest in supporting projects that apply location data in innovative ways.

Join Ramboll as a Senior Offshore and Onshore Pipeline Engineer, where you will play a pivotal role in designing and executing pipeline projects that meet industry standards and client expectations. Collaborate with multidisciplinary teams, leveraging your expertise to deliver innovative engineering solutions. Your contributions will help shape the future of energy infrastructure.

About the TeamJoin the Sell Online Tribe, a dynamic group that empowers merchants to establish their presence online. We create innovative tools that enable millions of entrepreneurs, from barbers to bakers, to market their products and services effortlessly. Our core focus lies in the Online Store and Bookings products, which form the backbone of SumUp’s ecosystem, allowing merchants to manage appointments, highlight their offerings, and process payments—all from their mobile devices.We are a collaborative, cross-functional team of Product Managers, Designers, and Engineers dedicated to delivering exceptional mobile experiences. As a part of this team, you will play a crucial role in expanding into new sectors, bridging the gap between web and mobile, and making digital selling seamless for small businesses worldwide.About the RoleAs a Senior Backend Engineer, you will be instrumental in enhancing SumUp's major merchant-facing online products within the Bifrost team. You will contribute to the development and scaling of key products such as Payment Links, Virtual Terminal, and Unified Gift Cards, while also working on integration solutions that are vital for numerous other SumUp offerings.We are looking for a developer who prioritizes reliability, teamwork, and continuous growth. Your backend expertise will thrive in a high-impact environment where your contributions directly influence merchant success and team scalability.What You’ll DoEnsure scalability and continuous growth of high-priority online products at SumUpDrive the implementation, development, and integration of Online Checkouts across SumUpEngage actively in planning and review sessions at quarterly and sprint levels, providing constructive feedback and estimationsMonitor existing services, applying necessary fixes to maintain platform reliabilityDevelop new features with maintainable and testable codeEnhance application performance for scalabilityParticipate in code reviews to uphold high coding standardsYou Will Excel in This Role If:You have 5+ years of experience in backend engineering with GolangYou possess a robust understanding of fundamental system architecture, design principles, data modeling, and API designYou have substantial experience with distributed and fault-tolerant systemsYou have a passion for delivering high-quality software solutions

Location: [Poland] About Us: RTB House is a pioneering performance demand-side platform (DSP) that leverages proprietary Deep Learning AI algorithms to empower brands in their growth journey. As a leader in performance marketing, we utilize Deep Learning technology across every stage of the purchase funnel. Since our establishment in 2012, we have expanded our operations to over 90 markets worldwide while maintaining a commitment to innovation and privacy. We specialize in providing end-to-end Deep Learning-driven AdTech products and solutions designed to optimize conversion, enhance customer acquisition, foster engagement, and sustain long-term demand for our diverse clientele. Role Overview: We are seeking a skilled DevOps Engineer to join our team, where you will be instrumental in crafting, implementing, and sustaining our cloud infrastructure, CI/CD pipelines, and automation of deployment processes. Your key responsibilities will encompass migrating applications from on-premises to Google Cloud Platform (GCP), monitoring web applications, automating routine tasks, and ensuring the stability of our production environment. You will work closely with development teams, system administrators, and various stakeholders to enhance the availability, security, and efficiency of our systems. This position presents a remarkable opportunity for an experienced DevOps professional eager to tackle intricate challenges and empower engineering teams to excel in their performance.

Join the talented team at CD Projekt Red as a Senior Story Engineer. In this role, you will be responsible for crafting engaging narratives and developing intricate storylines that enhance player experience in our games. Collaborate with writers, designers, and artists to bring immersive worlds to life.