Senior Backend Engineer - Main Application Team

About the RoleWe are seeking an experienced Senior Backend Engineer to become a vital member of our Main Application Team (MAT). In this influential role, you will be instrumental in designing and enhancing the backend systems that drive Rossum’s primary product, facilitating complex document processing workflows and extensive data flows utilized by our glob…

Why Join NebiusNebius is at the forefront of revolutionizing cloud computing to empower the global AI economy. We provide innovative tools and resources that enable our clients to tackle real-world challenges and revolutionize industries, all while minimizing infrastructure costs and avoiding the need for extensive in-house AI/ML teams. Our team collaborates with some of the most skilled and inventive leaders and engineers in AI cloud infrastructure.Our Work EnvironmentWith our headquarters in Amsterdam and listed on Nasdaq, Nebius boasts a worldwide presence with R&D centers across Europe, North America, and Israel. Our diverse team of over 1400 includes more than 400 exceptionally talented engineers with profound expertise in both hardware and software engineering, complemented by an in-house AI R&D division.Position OverviewWe are seeking a Senior Backend Software Engineer to contribute to the development of our hyperscaling platform.Responsibilities will involve significant tasks in Golang, with additional work in Java and Python.You have the flexibility to work from our offices in Prague, Amsterdam, or Berlin—whether in a hybrid setting or remotely.Key Responsibilities:Design and develop fault-tolerant, reliable cloud services, including cloud infrastructure, managed databases, Kubernetes orchestration, billing systems, monitoring systems, ML services, and more.

Join Our Innovative Team at EmplifiAt Emplifi, we are redefining customer engagement. Our unified platform empowers over 20,000 leading brands globally to enhance their digital and social customer experiences. By seamlessly integrating social media marketing, commerce, care, unified analytics, and AI, we enable companies to achieve greater growth through improved customer satisfaction, increased sales, and heightened brand loyalty.About the Parsers TeamThe Parsers Team plays a crucial role in ensuring our clients gain actionable insights for growth. We maintain a robust, reliable, and observable data flow from third-party APIs. Our responsibilities include monitoring API changes, integrating new data sources, and delivering high-quality data to downstream systems. With hundreds of thousands of I/O operations occurring each second, the challenge is significant. As we seek to enhance this platform, we invite a talented Backend Engineer to join our collaborative and friendly team, dedicated to building systems that are scalable, reliable, and maintainable. We value cooperation, creativity, diligence, and a healthy sense of humor.Key ResponsibilitiesEnhance and maintain our platform with innovative features.Contribute to a codebase of clean, well-tested code.Review code to uphold our quality standards.Monitor system performance and logs, troubleshoot issues, and develop tools for observability.Participate actively in our Scrum process.Invest in continuous personal development to advance your career.Collaborate effectively with a supportive team of professionals.Enjoy the journey of exploration and experimentation.QualificationsMinimum 1 year of experience with Node.js.A strong willingness to learn and adapt.Solid understanding of clean code principles and testing methodologies.Familiarity with database systems.Experience with Git and modern development workflows.Bonus: Experience in distributed systems or high-throughput environments.Our Tech StackLanguages & Frameworks: Node.js, TypeScriptInfrastructure: AWSDatabases: SQL & NoSQL

Groupon is a dynamic marketplace where customers uncover exciting new experiences and services every day, empowering local businesses to thrive. With over a million merchant partners globally, we connect more than 16 million customers to amazing deals across diverse categories. In a market often dominated by e-commerce behemoths, Groupon distinguishes itself as one of the few platforms genuinely committed to driving local business success on a performance basis.We are on a transformative journey, relentlessly pursuing results while fostering a culture that inspires innovation, rewards risk-taking, and celebrates success. Despite our global presence with thousands of employees, we maintain a close-knit culture where one individual can make a significant impact. We embody the "best of both worlds"; large enough to provide resources and scale, yet small enough to allow personal autonomy and meaningful contributions.About the Role Join Groupon’s next chapter, driving AI-powered innovation from either Valencia or Prague.Are you a hands-on technical leader prepared to shape the future of B2B platforms? This is a pivotal moment for Groupon as we aggressively pursue an AI-first strategy and modernize our technology stack. As the new Backend Engineer for Deal Management, you will architect, develop, and enhance systems that empower local businesses globally, building from the ground up.

Apify builds tools that let people and organizations automate online tasks, extract web data, and use AI agents to get more done. The company believes that repetitive digital work, like filling out forms, copying data, or searching for visual details, should be handled by machines so people can focus on more meaningful problems. Web automation helps users in practical ways: some automate unsubscribing from services to save money, others collect large datasets for AI training, consumer protection, or even tracking missing children. Apify also supports AI chatbots with relevant data and explores new ways to connect with generative AI platforms. To keep advancing this mission, Apify is hiring a Senior Backend Engineer focused on proxy infrastructure and unblocking. This role is based in Prague. What You Will Do Design and build bots that imitate real user actions to automate online processes. Work closely with a small, skilled team of developers. Improve Apify Proxy and related backend technologies. About the Role As anti-bot systems evolve, Apify needs to keep its scraping infrastructure ahead of the curve. This engineer will strengthen Apify Proxy, research anti-scraping defenses, and create internal tools using browser fingerprinting, human-like interaction patterns, and session management to keep data flowing smoothly. The team values engineers who enjoy solving tough technical problems and want to contribute to open-source proxy libraries. Location Prague

Apify builds automation tools, AI agents, and web scraping technology to help people get more from the web. The goal: let machines handle repetitive online tasks, so people can focus on work that matters. Everyday chores like filling out forms, building large spreadsheets, or searching through countless videos for a single image are handled by Apify’s platform. Automation here is more than convenience, it can save money, collect data for AI, protect consumers, and even support efforts to find missing children. The team also creates AI chatbots with the right context for smart conversations and explores new ways to work with generative AI tools such as ChatGPT. What You'll Work On Improve and scale Apify’s core web scraping and automation systems, which run on AWS. Work closely with a small, experienced group of engineers from different backgrounds. Design and build new features while solving real scalability problems. Contribute to a platform built by developers, for developers. The team uses Apify’s own tools daily and is committed to open-source, sharing code on GitHub and welcoming pull requests. Role Details Title: Senior Backend Engineer for Developer Platform Stack: Node.js, TypeScript Location: Prague

Why Join Nebius?Nebius is at the forefront of a revolutionary shift in cloud computing, empowered to drive the global AI economy. We craft innovative tools and resources that enable our clients to tackle real-world challenges and revolutionize their industries, all without incurring hefty infrastructure costs or the necessity of assembling large internal AI/ML teams. Our team operates at the cutting edge of AI cloud infrastructure, collaborating with some of the most seasoned and imaginative leaders and engineers in the industry.Our Work EnvironmentHeadquartered in Amsterdam and publicly listed on Nasdaq, Nebius boasts a global presence with research and development hubs throughout Europe, North America, and Israel. Our diverse team of over 1,400 employees includes more than 400 highly skilled engineers with extensive expertise in both hardware and software engineering, complemented by a dedicated in-house AI research and development team.The RoleWe are seeking a Senior Backend Engineer to become a vital part of our Storage Virtualization Team, contributing to the development of a distributed, fault-tolerant storage system for Nebius’ hyperscaler cloud. You will be engaged in the creation of high-performance block and filesystem storage solutions that provide sub-millisecond latency, millions of IOPS, and terabytes per second of throughput, even amidst hardware failures. Your Responsibilities:Virtualization: virtio-blk and virtio-fs, QEMU and vhost-user, optimization of performance-critical I/O paths.Networking: high-throughput VM-to-storage transport utilizing TCP and RoCEv2 (RDMA).Storage systems: handling replication, consensus, self-healing, and data migration. What We Are Looking For:6+ years of professional software engineering experience.Expertise in C++ programming.A solid grasp of algorithms and data structures.Basic understanding of operating system internals (I/O, memory, scheduling).Proven ability to write reliable, maintainable code and debug complex systems.A collaborative mindset with fluency in English.Coding interviews are part of our hiring process.

Join Kaizen Gaming!As one of the leading GameTech companies globally, Kaizen Gaming powers Betano and operates in 19 markets. We are dedicated to leveraging the latest technologies to deliver unparalleled entertainment experiences to millions of customers.Our diverse team of over 2,700 professionals, representing more than 40 nationalities across three continents, fosters a vibrant culture. Recognized among the Best Workplaces in Europe and certified as a Great Place to Work, we promise that no two days will be the same. Are you ready to Press Play on your potential?Your Role AwaitsAs a Principal Backend Engineer, you will be at the forefront of designing and implementing innovative, scalable, and high-performance backend systems. We seek a technology leader who excels in mentoring engineers at all levels. In this pivotal role, you will drive the development of robust software solutions through seamless collaboration with cross-functional teams.Key Responsibilities:Architect & Innovate: Collaborate with our agile team to design secure and high-performance backend systems that underpin our advanced solutions.Craft High-Performance Code: Write clean, efficient code that forms the backbone of our technology stack.Mentorship: Inspire and guide fellow engineers, cultivating their skills and promoting best practices.Optimize Performance: Lead initiatives to enhance system performance for an exceptional user experience.Seamless Integration: Work closely with cross-functional teams and stakeholders to ensure smooth system integration.Stay Ahead: Keep abreast of emerging technologies and apply them to enhance our capabilities.Establish Company Best Practices: Collaborate with Platform Engineering to define and implement company-wide best practices for software development.Strategic Technical Roadmap: Contribute to shaping the company-wide technical roadmap, ensuring a focus beyond immediate product demands.

Join a cutting-edge tech company that is revolutionizing the data storage landscape! At PureStorage, you will be at the forefront of innovation, collaborating with some of the brightest minds in the industry. If you're ready to embrace a world of limitless opportunities and make a significant impact, we invite you to be part of our journey.THE ROLEAs a member of the FlashArray team, you will contribute to the development of the most advanced, high-performance, and reliable product portfolio tailored for mission-critical applications. Though we provide a hardware storage array, our engineering team is predominantly composed of software engineers. Our customers value FlashArray for its ease of management, continuous upgrades, and the ability to leverage cutting-edge technology without downtime. In this role, you will focus on enhancing our virtualization ecosystem, working on plugins like vSphere, Veeam, PowerShell, and more to ensure seamless integration with FlashArray.WHAT YOU'LL DODesign and implement innovative features and technologies for high-performance virtualization integrations.Take ownership of FlashArray virtualization plugins from inception to delivery.Analyze and resolve complex challenges across virtualization platforms with a focus on simplicity and scalability.Collaborate with talented peers who inspire and motivate you.Delight customers by enabling smooth integration of FlashArray into their virtualization environments.Grow your knowledge base, whether you're a seasoned expert or just starting out in virtualization, storage, or system software.We primarily operate in an in-office setting, so you will be expected to work from our Prague office in accordance with Pure's policies, except during approved leave or work-related travel.

Wrike stands as a premier work management platform, expertly designed for teams and organizations striving for collaboration, innovation, and excellence daily. With Wrike, all work converges in a unified space, eliminating complexity, enhancing productivity, and allowing individuals to concentrate on meaningful tasks. Our Vision: A world where everyone can focus on their most purposeful work, collaboratively. Discover More About Wrike TeamAt Wrike, every voice is significant. Our Scrum teams, which include FE, BE, QA, UI, UX, and a PO, are central to our decision-making process. Backend engineers within product teams tackle both business logic and technical challenges, while technical teams facilitate smooth internal tooling, CI/CD, and an exceptional developer experience. We prioritize our architecture, deploy daily with minimal merge conflicts, and encourage backend engineers to innovate, work on technical enhancements, and contribute to product plans by sharing insights with POs. As we transition to a microservice architecture, product teams gain increased ownership and flexibility, supported by technical teams. Our mission is to simplify our clients' experiences by creating intuitive and powerful solutions suitable for everyone—from startups to large enterprises.Are you a dedicated Backend Engineer? This is more than just a job posting—it's an invitation for you to connect with Wrike for potential future opportunities. By joining our talent pool, you can introduce yourself and explore our culture, projects, and technologies. Even if we don't have a current opening, we're always excited to meet skilled professionals. Apply today to start a dialogue and learn more about life at Wrike.What We’re Working On:Designing, building, and enhancing product features from the ground up or improving existing functionalities.Collaborating to tackle complex challenges and refining solutions as a collective team.Ensuring high technical quality through thorough code reviews, testing, and task estimation.Adopting rapid, iterative development while adhering to best practices.Utilizing AI tools daily to automate processes and enhance productivity.Fostering continuous learning and supporting each other’s professional growth.Our Technology Stack:Java (21), Spring, REST APIs, SQL.PostgreSQL, Redis, RabbitMQ.Unit/integration testing, Java web stack.AI tools (Cursor, Zencoder, etc.; internal AI portal; internal MCP).

Veeam is recognized as a leader in data management and AI trust, dedicated to empowering organizations to safeguard their data and AI capabilities. We are at the forefront of data resilience and security posture management, designed to harmonize identity, data, security, and AI risk management. Headquartered in Seattle, we have a global presence with offices in over 30 countries and serve more than 550,000 customers who rely on Veeam to ensure their operations remain seamless. Join our dynamic team as we pursue growth, innovation, and impactful contributions for some of the world’s largest enterprises.About the RoleAs a leader in Kubernetes Backup and Disaster Recovery, we offer Veeam Kasten, a purpose-designed data management platform for Kubernetes. This platform equips enterprise operations teams with a user-friendly, scalable, and secure solution for backup, restore, disaster recovery, and application mobility while maintaining exceptional operational simplicity. We continuously optimize and expand our Kubernetes capabilities to address our customers' evolving needs, currently enhancing integrations with SaaS services and supporting virtual machines hosted within Kubernetes.

JetBrains has developed tools for software teams since 2000. By automating routine checks and corrections, JetBrains products help developers focus on building and shipping software. The goal: make development more productive and creative. Role overview This Backend Customer Success Engineer role centers on supporting engineering teams as they adopt Kotlin for backend development. The position focuses on helping organizations successfully bring Kotlin into production environments. What you will do Guide organizations through the process of moving from Java to Kotlin, assisting with migration, integration, and scaling. Troubleshoot technical challenges that arise during the transition and support teams as they progress from initial experimentation to stable production use. Work with potential users to clarify how Kotlin adoption works and help design migration plans that fit their specific needs. Locations Amsterdam, Netherlands Berlin, Germany Munich, Germany Prague, Czech Republic Remote, Germany

Why Join Nebius?Nebius is pioneering a transformative era in cloud computing, aimed at empowering the global AI economy. We provide innovative tools and resources that enable our clients to tackle real-world challenges and revolutionize industries without incurring significant infrastructure expenses or the necessity of establishing large in-house AI/ML teams. Our team operates at the forefront of AI cloud infrastructure, collaborating with some of the most knowledgeable and inventive leaders and engineers in the industry.Our Work EnvironmentHeadquartered in Amsterdam and publicly traded on Nasdaq, Nebius boasts a global presence with R&D centers across Europe, North America, and Israel. Our workforce of over 1,400 includes more than 400 proficient engineers, all possessing extensive expertise in both hardware and software engineering, complemented by an in-house AI R&D team.About Token FactoryToken Factory is dedicated to developing a cutting-edge platform that empowers companies to effortlessly integrate AI into their products and operational workflows. Our vision is to establish a robust, open, and scalable alternative for deploying and managing AI systems, thereby enhancing accessibility to advanced AI infrastructure for both burgeoning startups and established enterprises.We collaborate with a diverse clientele, ranging from AI-first organizations to renowned technology firms, assisting them in managing AI workloads reliably at scale. Our objective is to become the leading platform for high-performance AI inference, ensuring consistent latency, exceptional reliability, and the capacity to scale in response to demanding production requirements.Customer feedback is integral to our development approach; our iterative process is closely aligned with practical use cases.

GoodData’s Professional Services team in Prague is hiring a Frontend Software Engineer to help build AI-powered data applications for Fortune 500 clients. This group works on the Agentic Data Platform, focusing on solutions that process and analyze large datasets. The frontend squad, consisting of 6-7 engineers, collaborates within a larger Scrum team that includes data engineers, logical model designers, and full-stack developers. Using React, the team creates interfaces that make complex data analysis accessible to major clients. Engineers in this role develop their skills with support from experienced tech leads and architects. The team values collaboration, continuous learning, and encourages taking on more responsibility over time. Work culture AI agents such as Claude Code, Cursor, and Codex are integrated into daily workflows, assisting with scaffolding, refactoring, code reviews, and automation. Engineers select their preferred stack, including IDE, LLM provider, and agent workflow. Anthropic is commonly used, but everyone is free to choose what fits best. Rapid iteration and maintaining high standards are important. Tech leads provide guidance to balance quality and speed. Knowledge sharing is encouraged through internal workshops, frontend meetups, and open architectural discussions. Autonomy and ownership are central. Engineers decide how to solve problems and collaborate on prioritizing issues. What you will do Develop custom dashboard plugins and single-page applications for large clients using the open-source GoodData.UI React library. Work with others to deliver client solutions based on the GoodData platform and GoodData.UI. Deliver features end-to-end in an agile Scrum environment. Collaborate with tech leads and architects on feature implementation and technical discussions. Review code, write unit and integration tests, and work with QA to ensure software quality. Suggest improvements to best practices, technology stack, and AI-supported workflows. Requirements Proficiency in JavaScript and React. Experience with data visualization tools and libraries. Strong problem-solving ability and a collaborative mindset.

Join Our Dynamic Real-Time Engineering Team!We are on the lookout for exceptional Senior Software Engineers to amplify our capabilities. At Cint, our Real-Time Engineering team is a collective of highly skilled individuals who thrive on tackling challenging projects. We pride ourselves on our extensive experience in designing and implementing complex systems that effectively manage unusually high traffic volumes. Our team culture fosters support and collaboration, ensuring every member feels valued. We believe in not just working together but also enjoying social interactions, making our workplace vibrant and enjoyable.Your Role and ResponsibilitiesAs a key member of our results-driven team, you'll find that our focus is purely on product quality and timely delivery. We eliminate workplace politics and distractions, prioritizing the code that directly impacts millions of users daily. You’ll collaborate with other top-notch engineers, ensuring that we collectively deliver a world-class product. The stakes are high; each error or downtime could result in significant financial loss.

Role overview Pure Storage is looking for a Backend Engineer in Prague, Czech Republic, with a focus on secrets management. The position involves building and refining backend systems that safeguard sensitive information. The team uses C++ and Java to create secure, dependable solutions for customers. What you will do Develop and maintain backend components that support secrets management features Use C++ and Java to implement secure storage and manage access controls Work closely with other engineers to enhance data protection and ensure system reliability Team culture The Prague engineering group values security, code quality, and collaboration. Team members support each other while tackling complex technical challenges and designing technology that customers trust.

At Veeam, we are the trusted leaders in Data and AI, dedicated to empowering organizations in understanding, securing, and fortifying their data and AI capabilities. As pioneers in data resilience and security posture management, we thrive at the intersection of identity, data, security, and AI risk management. Our headquarters in Seattle is complemented by a presence in over 30 countries, safeguarding the operations of more than 550,000 customers globally who rely on us to keep their businesses thriving. Join our journey as we move forward together, fostering growth, learning, and making significant contributions for some of the most renowned brands worldwide.About the RoleAs an Application Security Engineer specializing in Offensive Testing, you will spearhead penetration testing and Dynamic Application Security Testing (DAST) for our Veeam Data Cloud products. You will leverage Burp Suite and advanced web/API testing methodologies to uncover real, exploitable vulnerabilities, prioritize risks, and collaborate with engineering teams to ensure effective remediation.Your role will also involve enhancing testing tools and processes to foster repeatability and assist teams in preventing recurring vulnerabilities, particularly in areas such as authentication, authorization, session management, and tenant isolation.What You’ll DoLead offensive testing initiatives: strategize testing scope, depth, and frequency; produce clear reports and reusable playbooks.Conduct extensive manual penetration testing: focus on web applications and APIs, emphasizing authentication/authorization, multi-tenant boundaries, and critical workflows; create realistic attack simulations by chaining issues.Employ Burp Suite daily: validate and reproduce findings utilizing advanced features; maintain repeatable scopes, macros, and authenticated flows.Execute and enhance DAST: perform authenticated scans, fine-tune processes to minimize false positives, and collaborate with CI/platform teams to scale scanning and manage credentials.Drive remediation efforts: generate high-quality reports, partner with engineers for fixes and retesting, and prevent regressions; ensure findings are categorized appropriately with designated severity and SLAs.Contribute to long-term security improvements: identify recurring patterns and aid teams in mitigating them through established standards, libraries, platform controls, and input in threat modeling/design reviews.

Keboola has successfully raised $32 million in 2023, marking the largest Series A funding round in Central Europe, with a vision to revolutionize how organizations interact with data. Our innovative platform empowers teams to achieve tenfold results, and we are now expanding our reach globally to accelerate data-driven initiatives.We are on the lookout for a Senior Product Manager to oversee Automation & Data Applications at Keboola. This pivotal role involves enabling users to design and schedule automated data workflows, manage intricate orchestration logic, query data interactively, and create customer-focused data applications that operate on our Keboola infrastructure.This position sits at the crossroads of developer-centric tools and business user accessibility. Your user base will include data engineers constructing complex pipelines and managing Git-synced code, as well as business analysts who need to build workflows and data applications without writing any code. You must fluently communicate in both technical and business terms and focus on optimizing the user experience for everyone involved. The ideal product is not defined by its features but by its ability to empower more users to create.The competitive landscape is rapidly evolving, with players ranging from app-building platforms like Lovable and Base44 to workflow solutions such as Zapier, Make, and n8n. Understanding not only what competitors offer but also the rationale behind user preferences is crucial.We seek a candidate who is inherently AI-savvy, utilizing AI for prototyping, analysis, and specification writing as a standard practice, and who can influence the way AI enhances our product—from assisted flow creation to intelligent automation. You will take complete ownership of your area, making data-driven prioritization decisions and possessing acute commercial awareness regarding what fuels growth and how product choices influence business outcomes.This role does not involve engineering management. We require a Product Manager with profound user empathy—someone who actively engages with users to identify their genuine pain points and translates those insights into a product strategy that drives measurable success. You must be equally concerned about the data engineer craving detailed control and the business analyst eager to launch a workflow independently. If you prefer drafting specifications over engaging with customers, this position is not suited for you.

Veeam Software is seeking a highly skilled Senior Workday Application Administrator to join our dynamic team in Prague. In this role, you will be responsible for the administration, configuration, and optimization of our Workday applications. You will collaborate with cross-functional teams to ensure seamless integration and functionality of Workday systems, providing expert support and guidance.

Join Us at NebiusNebius is pioneering the future of cloud computing to support the global AI economy. We develop cutting-edge tools and resources that empower our clients to tackle real-world challenges and revolutionize industries without incurring massive infrastructure costs or needing to assemble extensive in-house AI/ML teams. Our team operates at the forefront of AI cloud infrastructure, collaborating with some of the industry's most innovative leaders and engineers.Our Work EnvironmentWith our headquarters in Amsterdam and listed on Nasdaq, Nebius boasts a global presence with research and development hubs throughout Europe, North America, and Israel. Our workforce consists of over 1400 employees, including more than 400 highly talented engineers with extensive expertise in both hardware and software engineering, as well as an in-house AI research and development team. The YDB Development Team is seeking a Senior Software Engineer with expertise in C++.YDB is an open-source solution serving dual purposes within Nebius:A scalable and reliable binary object storage foundation that powers S3 Object Storage, Filestore, and Network Block Storage, optimized for AI-related workloads.A distributed relational database and message broker that underpins Nebius cloud operations, including IAM, Billing, Audit Trails, and Logging.How You Will Make an ImpactEnhance YDB to maximize the potential of modern hardware such as QLC NVMe drives, Dual 800Gb/s network adapters, and BlueField DPUs.Optimize performance on widely utilized devices like HDDs and TLC NVMe.Redesign YDB components to integrate seamlessly with evolving technologies.