Senior Software Engineer — Real-Time Ad Serving

Join Zeta Global as a Senior Software Engineer specializing in Real-Time Ad Serving. In this role, you will leverage your expertise to develop and optimize our advertising technologies, ensuring the delivery of high-performance solutions that meet our clients' needs. You will collaborate with cross-functional teams to architect and implement scalable systems…

Why Choose Nebius?Nebius is pioneering a revolutionary wave in cloud computing tailored for the global AI economy. We equip our clients with innovative tools and resources designed to tackle real-world challenges and revolutionize industries, all while minimizing infrastructure costs and the necessity for extensive in-house AI/ML teams. Our team operates at the forefront of AI cloud infrastructure, collaborating with some of the most adept and visionary leaders and engineers in the domain.Our Work EnvironmentHeadquartered in Amsterdam and publicly traded on Nasdaq, Nebius boasts a worldwide presence with R&D centers across Europe, North America, and Israel. Our dynamic team consists of over 1400 professionals, including 400+ highly skilled engineers with extensive expertise in both hardware and software engineering, as well as an in-house AI R&D division.The RoleWe are seeking a talented Backend Engineer to play a crucial role in the development of our hyperscaler platform.

About UsZeta Global (NYSE: ZETA) is a leading AI-Powered Marketing Cloud that harnesses state-of-the-art artificial intelligence (AI) and vast consumer insights to streamline how marketers acquire, nurture, and retain customers effectively. Our vision through the Zeta Marketing Platform (ZMP) is to simplify complex marketing processes by integrating identity management, data intelligence, and omnichannel activation into a cohesive platform, all backed by one of the industry's most extensive proprietary databases. We empower enterprise clients across diverse sectors to tailor experiences at an individual level, enhancing the effectiveness of their marketing strategies. Established in 2007 by David A. Steinberg and John Sculley, Zeta Global is headquartered in New York City, with a global presence. For more information, visit www.zetaglobal.com.Role OverviewWe are seeking a highly skilled Senior Software Engineer to lead our team in architecting, developing, and managing the Addressability component of the Zeta Marketing Platform. In this role, you will collaborate closely with Engineers, Product Managers, and Executives to define a strategic roadmap and execute projects aimed at creating a next-generation, comprehensive multichannel marketing solution that integrates and unlocks data across digital touchpoints, maximizing marketing ROI.This position entails designing and developing real-time systems for The Zeta Marketing Platform and LiveIntent, focusing on technologies that enable access to core Identity Solutions. You will mentor a team of developers through knowledge-sharing sessions, enhancing their expertise. A deep understanding of distributed systems and cloud architecture is essential, along with extensive design and development experience and a passion for working with large datasets and building reliable, low-latency data processing systems.This is a hybrid position based in our Prague, Czech Republic office.

Filevine is a pioneering company in the realm of Legal AI, dedicated to providing Legal Operating Intelligence for the future of legal work. Our platform integrates data, documents, workflows, and teams into a cohesive system—where modern legal tasks are performed with transparency and consistency.Driven by LOIS, the Legal Operating Intelligence System, Filevine enhances the legal operations process by transforming it from reactive to proactive. LOIS comprehends and analyzes your data to uncover insights, streamline complexities, and empower legal professionals with the clarity and confidence needed to excel. Our remarkable growth has been recognized by prestigious awards from Deloitte and Inc., acknowledging us as one of the most innovative and rapidly expanding technology firms in the nation.As a Software Engineer, you will play a crucial role in redefining the capabilities of legal technology. Your responsibilities will include developing web applications and essential backend services that interface with AI models such as GPT, Claude, and Gemini.At Filevine, you will enjoy a dynamic work environment where solving real-world customer challenges, owning features from inception to deployment, and influencing our software development practices at scale are part of your everyday experience.

Join the ShipMonk Team!At ShipMonk, we are more than just a third-party logistics provider; we are a dedicated growth partner for merchants. Our advanced technology and extensive network of fulfillment centers help high-growth e-commerce and DTC brands minimize stress and maximize growth. With over 2,500 employees across five countries, we are on a mission to transform fulfillment by offering the fastest click-to-delivery service, real-time inventory management, and tailored solutions—all driven by a merchant-first mindset.Why Choose ShipMonk?We believe in building long-term relationships, and our success is rooted in five key differentiators that enable us to be true partners to our merchants:Global Fulfillment Network: Our 12+ owned and operated fulfillment centers span the US, Canada, Mexico, the U.K., and mainland Europe, ensuring quality and consistency without outsourcing.Proprietary Technology: Our AI-powered platform removes the need for tribal knowledge, providing a real-time, unified view of inventory and orders, empowering our merchants with control and visibility.Unrivaled Support: We offer personalized, hands-on support with a global presence, with dedicated teams available at each fulfillment center, ready to assist.Transparent Pricing: We are committed to honest, long-term partnerships, offering all-inclusive pricing with no hidden fees or surprises.Future Commitment: We invest over $10 million annually in research and development to continuously enhance our technology and services, helping merchants establish a lasting partnership.

People.ai is a cutting-edge AI-driven foundational data platform, dedicated to empowering organizations in achieving go-to-market success and growth. Our solutions are tailored to meet the unique needs of teams, offering enhanced visibility into pipelines, actionable insights, and a unified source of truth for all sales activities.People.ai stands out with its unique dataset, comprising trillions of sales activities, millions of deals, and a vast network of 160 million business contacts, supported by 69 approved patents in AI-based business insights. Esteemed companies like Verizon, Red Hat, and Palo Alto Networks trust our enterprise-ready, patented AI technology.At People.ai, we embrace the transformative power of creativity, resourcefulness, and critical thinking in enriching the professional landscape. Our diverse team of innovative thinkers is committed to driving meaningful change and fostering growth. We celebrate uniqueness and applaud non-traditional career journeys, drawing inspiration from those who redefine processes.As a Senior Software Engineer within our XCore team, you will engage with one of the most significant projects at People.ai — Forecasting. Your role involves building and continuously improving a live product that serves active daily users, collaborating closely with business teams and customers through discovery calls. Your contributions will directly influence the company’s revenue by shaping and delivering features based on authentic customer feedback, fundamentally impacting how clients plan, forecast results, and make crucial business decisions.Moreover, you will work in collaboration with our Engineering and R&D teams to enhance core Admin Platform services, including authentication, user management, settings, and configurations. Utilizing customer insights and data analytics, you will design and develop high-performance, low-latency systems and APIs that scale effectively while optimizing our operational costs.Ownership is a core value at People.ai — the ability to see an idea through all stages, from conception to product launch. This ethos is deeply ingrained in our engineering culture. As an engineer at People.ai, you will be part of a highly independent and collaborative environment, driving innovation and excellence.

Why choose Nebius?Nebius is at the forefront of revolutionizing cloud computing, catering specifically to the burgeoning global AI economy. We empower our clients with state-of-the-art tools and resources designed to tackle real-world problems and drive industry transformation, all while minimizing infrastructure expenses and eliminating the requirement for extensive in-house AI/ML teams. Our workforce is engaged in pioneering advancements in AI cloud infrastructure, collaborating with some of the most talented and innovative leaders and engineers in the industry.Our Work EnvironmentWith our headquarters located in Amsterdam and a listing on Nasdaq, Nebius boasts a worldwide presence with R&D centers across Europe, North America, and Israel. Our diverse team of over 1,400 employees includes more than 400 highly skilled engineers who possess deep expertise in both hardware and software engineering, complemented by a dedicated in-house AI R&D unit.The PositionThis opportunity is within Nebius AI R&D, a team dedicated to applied research and the creation of AI-intensive products. Our recent applied research publications include:Exploring how test-time guided search can enhance agent capabilities.Significantly expanding task data collection to drive reinforcement learning for software engineering agents.Optimizing efficiency in LLM training using agentic trajectories.One of our key AI products is the Nebius Token Factory, an inference and fine-tuning platform for AI models.This role demands proficiency in distributed systems for constructing a large-scale LLM training platform.Your Responsibilities Will Include:Design and develop the LLM training platform.Oversee and maintain our ML infrastructure to ensure peak performance, scalability, and reliability.Enhance job scheduling strategies to reduce resource fragmentation.

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.

About Gen Digital Gen Digital builds cybersecurity, privacy, identity protection, and financial wellness solutions used by nearly 500 million people in over 150 countries. Brands in the Gen Digital family include Norton, Avast, LifeLock, and MoneyLion. The company’s focus is digital freedom and financial empowerment for today’s connected generations. Teams at Gen Digital share a commitment to protecting consumers as they manage their digital and financial lives. Employees have access to flexible work options, generous time off, and competitive pay and benefits. The company values healthy debate, experimentation, and ongoing learning. Diverse perspectives and experiences are seen as strengths, and team members support and respect one another. Software Engineering Internship Overview This is a paid summer internship in Prague, running from June 15th to September 15th. Interns join a team of eight engineers focused on building scalable microservices for detecting and stopping online threats, especially scams and phishing. The group works with Rust and Python, deploying services on Kubernetes that handle thousands of requests per second. Interns work on real cybersecurity challenges and contribute to production systems. What You Will Do Work with experienced engineers to design and develop microservices Take part in feature development, testing, deployment, and monitoring Use technologies such as Kubernetes, cloud infrastructure, and various databases Apply tools like Git, Unix, and scripting environments in daily work Explore performance improvements and new technologies with guidance from mentors Location Prague, Czech Republic

Become a part of Apify as we strive to empower everyone to extract more value from the web. Our platform enables users to automate their tasks, allowing them to focus on what truly matters.Apify crawls billions of web pages globally to support various applications including AI, market research, and reuniting lost children. We provide chatbots with the necessary context for intelligent interactions, and we are integrating agents into the core of our Apify platform.As a leader in web automation and AI solutions for countless developers and businesses, we face challenges with abuse and fraud. We are seeking a dedicated individual who is ready to tackle these issues head-on.We are looking for a seasoned Engineer to enhance our fraud detection, prevention, and response mechanisms across the Apify platform. The task is complex: it involves identifying malicious activities while ensuring that our legitimate users continue to enjoy a seamless experience.

Join us at Pure Storage—a company at the forefront of technology, transforming the data storage landscape. You'll embrace innovative thinking, grow with us, and collaborate with some of the brightest minds in the industry.If you’re eager to explore limitless opportunities and make a significant impact, we invite you to be part of our team.THE ROLEAs a Software Engineer Intern, you will be at the cutting edge of data storage technology, addressing critical engineering challenges alongside seasoned professionals. This isn’t just an observational role; you will take ownership of a vital project that directly influences our product roadmap. In our agile pair-programming environment, you’ll convert complex theoretical concepts into high-performance code that supports some of the world’s largest enterprises.WHAT YOU'LL DOArchitect and Implement Core Features: Take full responsibility for the development of a technical project—from design to deployment—enhancing system reliability, performance, and scalability.Optimize High-Performance Code: Create and enhance production-level C++ code to eliminate bottlenecks within intricate distributed systems or flash-management layers.Collaborate and Peer Review: Work alongside a fellow intern and experienced mentors to conduct thorough code reviews, ensuring that every contribution meets our high standards for security and efficiency.Drive Data-Informed Iteration: Test and validate your solutions using Python or Go-based automation frameworks to ensure your project provides measurable improvements to the Pure ecosystem.

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.

Join CloudTalk as a Senior Software Engineer (Node.js) and be part of a global leader in AI-driven business communication solutions!At CloudTalk, we believe in empowering sales and support teams with the tools they need to enhance customer experiences. With a recent $28 million Series B funding from esteemed investors, we're on track to revolutionize how businesses communicate.As a Senior Software Engineer on our dynamic team, you will collaborate with a diverse group of professionals, including Backend and Frontend developers, QA engineers, and Product Managers, all working in a Scrum environment. Your expertise in Node.js will be crucial in developing and maintaining scalable web applications that drive our mission forward.Your Role:Contribute to the BIT (Backoffice and Internal Tools) team, focusing on our sophisticated billing system, public APIs, and internal management tools.Write clean, maintainable code while actively participating in our robust testing culture.Design and implement new features, engaging in technical discussions and collaboration with your team.Stay updated with emerging technologies and integrate them into your workflows.Why CloudTalk?Be part of creating the #1 AI business communication platform!Enjoy personalized 1-on-1 coaching for your professional growth.Connect with a vibrant community of CloudTalkers and follow our journey on Instagram.Get a front-row seat as we aim for $100M ARR!

Join us in a thrilling journey as we revolutionize the data storage landscape! At Pure Storage, you will engage in groundbreaking technological advancements, work alongside brilliant minds, and contribute significantly to a rapidly evolving industry.If you're eager to embrace the limitless opportunities that come with innovation and leave a lasting impact, we invite you to be part of our team. THE ROLEThe Access Rules team in DX Engineering plays a pivotal role in shaping security and access management at Pure Storage. This dynamic group of engineers designs and maintains systems that govern user, group, and resource interactions across diverse platforms, ensuring secure operations at scale. The team is passionate about building APIs and backend solutions that enforce robust access controls across multiple systems within Pure Storage and the DX organization. They collaborate closely with the Authorization team, product managers, and UI/UX designers to define and enhance the core of Pure’s authorization infrastructure, contributing directly to complex backend services, overseeing feature migrations, and ensuring the reliability of essential access management systems.WHAT YOU'LL DOArchitect Scalable Ecosystems: Design, develop, and maintain high-availability processing services while adhering to stringent security and compliance standards for mission-critical data.Drive Full Lifecycle Innovation: Manage the entire development lifecycle—from experimenting with new technologies to deployment—keeping our platform at the leading edge of the industry.Optimize Engineering Excellence: Champion code quality through unit testing, thorough code reviews, and automated CI/CD pipelines to ensure seamless, continuous delivery.Collaborative Problem Solving: Work with stakeholders to translate complex business needs into elegant technical solutions, focusing on system interoperability and long-term maintainability.WHAT YOU BRINGBackend Mastery: Strong expertise in modern backend languages (such as Python, Java, or Golang) and demonstrated experience in designing and launching intricate software components, with an interest or experience in security.Cloud Native Expertise: Proven experience in building and scaling applications in cloud environments.

Join Zeta Global as a Senior Software Engineer in our Real-Time Ad Serving team. You'll be working on innovative technologies that drive ad serving efficiency and effectiveness in real-time. We are looking for a highly skilled engineer who is passionate about building scalable software solutions and enjoys working in a collaborative environment.

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.

Keboola has successfully raised $32 million in funding—marking Central Europe’s largest Series A round in 2023. Our mission is to transform how organizations leverage data, achieving results that are ten times more impactful for our clients. As we expand our global footprint, we aim to empower every data team to operate with greater speed, intelligence, and influence. We are currently seeking a talented Senior DevSecOps Engineer to join our Site Reliability Engineering (SRE) team consisting of five skilled engineers within our rapidly growing SaaS company. In this role, you will play a critical part in embedding security practices throughout our development lifecycle, automating security controls, and enabling developers to create secure services at scale. The ideal candidate will possess a strong foundation in software engineering, cloud security, and DevOps practices. You should have a solid understanding of infrastructure as code and container security, and be adept at utilizing AI tools to automate security workflows and expedite problem resolution. Although our team primarily communicates in Czech/Slovak, proficiency in English is essential for collaboration with other teams.

Join us at the forefront of technological innovation as we revolutionize the data storage landscape. By joining our team, you will be at the helm of groundbreaking initiatives, collaborating with some of the most brilliant minds in the industry.This is your chance to engage in transformative work that defines the essence of the tech sector. If you are eager to embrace limitless opportunities and make a significant impact, we invite you to apply.THE ROLEEverpure Cloud Azure Native is operational and readily accessible; we have successfully launched our initial service version and are committed to continual improvements each quarter. Our focus is on broadening use cases, penetrating new markets, and enhancing reliability and developer experience.The Foundation team manages a Go-based control-plane service that streamlines how clients utilize enterprise-grade block storage natively within Azure. Our tech stack is modern, incorporating Temporal and other platform services for workflows, automation, and observability. This role involves contributing to a cloud service that is customer-facing, meaning your contributions directly influence how clients deploy, scale, and manage storage within their Azure environments.This is a distinctive opportunity to engage with a core storage service within a leading public cloud, collaborating closely with Microsoft. You will design and enhance APIs and service behaviors that directly impact actual workloads while working in tandem with engineers from both organizations.We prioritize speed without compromising customer experience: maintaining clear API contracts, durable interfaces, comprehensive test automation, and CI/CD practices are integral to our process. If you're passionate about owning services from inception to deployment, tackling real-world challenges in distributed systems within the public cloud, and witnessing your efforts reflected in the experiences of Azure customers, this is the ideal environment for you.

Gen Digital is building a Financial Wellness platform that supports Norton Money, Norton 360, and LifeLock. This platform covers bank-linking, transaction processing, analytics, credit management, identity protection, and a digital marketplace for financial products. Role overview This Lead Software Engineer position focuses on backend architecture for the Financial Wellness platform. The role is based in Prague, Czech Republic. The engineer will own critical backend services, set technical direction, and work with teams to deliver secure and compliant financial solutions at scale. What you will do Manage and improve backend services for Financial Wellness products, including Norton Money, Norton 360, Norton Genie, and LifeLock, from design through operations and observability. The stack includes Java/Spring Boot on AWS, Postgres, and Kafka. Design and review REST APIs and data contracts for both internal and external services, with a focus on security, version control, and integration simplicity. Advocate for event-driven architectures and telemetry pipelines for offers, leads, financial events, and alerts, using Kafka and well-governed schemas. Support reliability and performance by maintaining service level objectives (SLOs) and planning for capacity.

Join Zeta Global as a Senior Software Engineer specializing in Real-Time Ad Serving. In this critical role, you will be responsible for developing and optimizing our cutting-edge ad serving technologies to enhance user experience and drive engagement. Collaborate with cross-functional teams to design scalable solutions and troubleshoot complex issues in a dynamic environment.