Senior Backend Software Engineer

Senior Software Development Engineer in Test (SDET) — Enablement PlatformAbout SwapAt Swap, we are revolutionizing agentic commerce through our cutting-edge AI-native platform that seamlessly integrates backend operations with an innovative storefront experience. We empower brands to sell anything, anywhere by centralizing global operations and providing int…

Join our innovative team at Adyen as a Development Tooling Engineer focused on Build & Test. In this pivotal role, you will enhance our development tools and optimize our testing processes, ensuring our engineering teams can deliver top-notch products efficiently. You will collaborate closely with developers and product managers to streamline workflows and implement automation solutions that facilitate continuous integration and delivery.

Join Our Innovative Messaging TeamWe are seeking a talented Senior Backend Engineer to become a vital part of our Messaging team. This team is responsible for Miro's notification platform, ensuring that users receive relevant, timely, and reliable notifications to enhance their Miro experience. Our scope covers email notifications, in-app alerts, and the robust systems that support them.Our mission lies at the crossroads of product experience and platform reliability. We empower Miro teams to engage with users effectively across multiple channels, minimizing noise and duplication while maximizing clarity. By developing a highly scalable and observable messaging system, we play a crucial role in driving user retention and engagement for millions.Your RoleAs a Senior Backend Engineer, you will help us enhance and scale Miro's messaging and notification capabilities.You will work on high-throughput, event-driven systems that adhere to strict standards for reliability, latency, and accuracy. A strong foundation in software engineering, experience with distributed systems, and a product-oriented mindset are essential, as every notification impacts user trust.You will take ownership of key services, collaborate closely with Product and Platform teams, and establish stable, extensible interfaces that enable Miro teams to deliver meaningful notifications efficiently and securely.Your ResponsibilitiesDesign and implement scalable, fault-tolerant backend services for email and in-app notifications.Develop and enhance event-driven, asynchronous pipelines that process large volumes of product and user events.Create high-quality technical designs and produce clean, maintainable, self-documenting production code.Ensure correctness, idempotency, deduplication, and delivery guarantees across notification workflows.Optimize performance, latency, and scalability while upholding reliability during peak usage.Assume long-term ownership of critical systems and processes.

As a QA Test Automation Engineer, you play a crucial role in enhancing software quality for our clients in Amsterdam and surrounding areas. You will be part of a dynamic team that prioritizes knowledge sharing, innovation, and personal development.Your Responsibilities:Test PreparationEstimate and develop new features within test automation frameworks.Identify which test cases to automate and assess the time required for implementation.Collaborate on efficient testing strategies.Provide insights into the maintainability of test systems.Test ExecutionMaintain and enhance existing frameworks.Support developers in creating unit tests.Design and conduct load and performance tests.Analyze and optimize test scripts.Integrate test automation into CI/CD pipelines.Reporting & ImprovementIdentify and report areas for improvement.Generate reports using BI tools.Share substantive progress with stakeholders.General DutiesYou serve as the connecting factor between the team, clients, and organization.You maintain existing client relationships and contribute to Resillion's visibility in the Dutch QA market.

Join a dynamic team at Insify, a rapidly growing European insurtech, and take the lead in shaping impactful outcomes.At Insify, we are entrepreneurs at heart, dedicated to creating innovative insurance solutions tailored for other entrepreneurs. We understand the journey of building from the ground up, taking calculated risks, and embracing responsibilities that extend beyond traditional hours.Our mission is both straightforward and ambitious: to revolutionize business insurance, making it 10 times simpler, faster, and fairer for entrepreneurs and SMEs throughout Europe. We eliminate cumbersome paperwork, obscure fine print, and outdated complexities, relying instead on modern software, intelligent automation, and an unwavering commitment to customer satisfaction. As a high-growth scale-up in Europe, we have secured €43M in funding from top-tier investors and aim to lead the global market in digital insurance for entrepreneurs and SMEs, starting from the Netherlands and expanding into France and Germany.We are fundamentally a technology-driven company, crafting our own insurtech platform while leveraging data, automation, and AI to transform the entire insurance process, from underwriting to claims. Our fully digital customer portal, coupled with a strong focus on user experience, is redefining insurance as a simple, transparent, and equitable service.Our leadership comprises seasoned entrepreneurs who have successfully built and scaled businesses, instilling that same drive, urgency, and sense of ownership in everything we do.Our CultureWe are not merely creating a company; we are establishing a category leader, which demands ambition, accountability, and speed.Our culture is characterized by three core principles:High Ownership Team members take full responsibility for their challenges. If something is unclear or broken, we proactively take action to resolve it.High Pace Priorities are dynamic, and decisions are made swiftly. We prioritize momentum and learning over perfection.High Standards Results are valued more than appearances. We focus on outcomes, quality, and commitment to our work.Furthermore, you will not be working in isolation.We believe that exceptional work is the product of close collaboration. Our team engages in face-to-face interactions, challenges each other's ideas, and encourages contributions from all levels, irrespective of title or experience.

Join us at Databricks, where our mission is to empower data teams to tackle some of the world's most significant challenges — from revolutionizing transportation to accelerating medical advancements. We achieve this by developing and operating the premier data and AI infrastructure platform, allowing our customers to harness profound data insights to enhance their businesses. Founded by engineers and driven by a customer-centric philosophy, we eagerly embrace every chance to overcome technical hurdles, whether that's crafting next-generation UI/UX for data interaction or scaling our services across millions of virtual machines. And this is just the beginning. Unlike conventional enterprise software, we create and build innovative SaaS products that delight all stakeholders: decision-makers, administrators, and end-users. As a Senior Fullstack Software Engineer, you will collaborate closely with your team and product management to deliver exceptional user experiences. Here are a few of the dynamic teams you could become a part of: SQL Analytics Console: This new product provides Databricks customers with a top-notch experience for Business Intelligence (BI) and executing SQL workloads directly on the data lake. Our team develops the console for SQL Analytics, where users configure, manage, and monitor their SQL usage.Jobs and Workflows: This team supports all asynchronous customer workloads for Databricks, which constitute the majority of our usage. As this demand has surged, we have restructured the system to enhance stability and scalability, while also introducing exciting new features for advanced workflows and customer observability. This team combines frontend, backend, and reliability engineering skills across various projects.Developer Ecosystem: Focused on enhancing the development experience and best practices with external tools, we oversee the core open-source components of the developer ecosystem: the SDK, CLI, and Terraform.Apps Developer Experience: This team is dedicated to making application development on Databricks seamless and enjoyable. We have built an SDK and services tailored for app developers, including our AppKit. Our Codegen sub-team develops tools that ensure apps function perfectly from the start. We are also working on an MCP server for Cursor/Claude Code and developing Skills.

SurveyMonkey is the leading platform for surveys and forms, designed specifically for businesses and cherished by users. Our platform blends robust features with user-friendly design, accommodating diverse needs from customer feedback to employee engagement, market analysis to payment and registration forms. With integrated research expertise and AI-driven technology, it’s akin to having a squad of expert researchers at your disposal.Trusted by millions, ranging from startups to Fortune 500 enterprises, SurveyMonkey empowers teams to gather insights and information that motivate informed decisions, foster experiences that users appreciate, and propel business development. Explore more at surveymonkey.com.What We SeekThe Quality Platform team is on the lookout for a Software Engineer who is enthusiastic about software quality and test automation. As a dedicated team, we provide the tools and infrastructure that empower our engineering teams to write, run, and report on tests. You will have the chance to troubleshoot test automation challenges alongside fellow engineers and create metric dashboards that provide insights into product quality.Your ResponsibilitiesDeveloping and maintaining automation frameworks.Creating tools to enhance testing processes.Designing and constructing dashboards for metric reporting.Assisting engineers in resolving test automation issues.Providing guidance to teams on testing strategies.Collaborating with a talented group of engineers to produce high-quality products.

Established in 2015, Shield AI is an innovative venture-backed company at the forefront of deep-tech, dedicated to safeguarding both service members and civilians through cutting-edge intelligent systems. Our product offerings include the advanced V-BAT and X-BAT aircraft, along with the comprehensive Hivemind Enterprise and Hivemind Vision product lines. With a strong presence across the U.S., Europe, the Middle East, and the Asia-Pacific, Shield AI's technology is pivotal in supporting global operations. For further insights, please visit www.shield.ai. Connect with Shield AI on LinkedIn, X, Instagram, and YouTube. The Senior Staff Engineer for Software Autonomy Applications will leverage their technical expertise to provide crucial support to customers during the deployment and utilization of Shield AI's enterprise software solutions. This role requires close collaboration with clients to fully understand their unique requirements, ensuring seamless product integration for AI and autonomy development initiatives.

At JetBrains, we are passionate about creating exceptional developer tools. Since our inception in 2000, we have dedicated ourselves to crafting the most robust and efficient tools to enhance developer productivity. Our innovative solutions automate routine checks and corrections, allowing developers to focus on creativity and problem-solving.One exciting initiative within the JetBrains Innovation Hub is the Live Debugger, a groundbreaking product designed for safe, AI-driven debugging of production systems. This tool empowers engineering teams to resolve issues in real-time environments, prioritizing safety, reliability, and security while seamlessly integrating AI capabilities. To see how it works, check out our demo.

About AirwallexAirwallex is a pioneering unified payments and financial platform designed specifically for global enterprises. Our innovative combination of proprietary technology and software solutions enables over 200,000 businesses globally—including industry leaders such as Brex, Rippling, Navan, Qantas, and SHEIN—to manage everything from business accounts to payments, spending management, and treasury, all the way to embedded finance on a worldwide scale.Founded in Melbourne, we are proud to have a diverse team of over 2,000 talented and innovative professionals across 26 locations around the world. With a valuation of $8 billion and support from top-tier investors like T. Rowe Price, Visa, Mastercard, Robinhood Ventures, Sequoia, Salesforce Ventures, DST Global, and Lone Pine Capital, Airwallex is at the forefront of developing the future of global payments and financial platforms. If you aspire to engage in the most impactful work of your career, we invite you to join us.Attributes We ValueWe seek builders who possess a founder-like energy, eager to make a significant impact, accelerate their learning, and assume real ownership. You should bring substantial expertise and analytical thinking, driven by our mission and operating principles. You act swiftly with sound judgment, delve deeply with curiosity, and base decisions on first principles, striking a balance between speed and diligence.You are humble and collaborative, adept at transforming initial concepts into tangible products, and you are committed to delivering results through every stage of the process. Leveraging AI to enhance productivity and expedite problem-solving, you will confront complex, high-stakes challenges alongside exceptional colleagues while advancing your career as we innovate the future of global banking. If this resonates with you, we look forward to building the future together.About the TeamOur Payments team operates across China, the Netherlands, and Singapore, embracing a diverse array of cultures and viewpoints. We are dedicated to demystifying the intricacies of payments for businesses by crafting solutions that seamlessly fit into their operations, boosting efficiency and enhancing customer conversion rates. Within our vibrant and multifaceted team, you will find yourself at the crossroads of innovation and practicality, where every input is vital in streamlining payment processes.By joining us, you become part of a global network of engineers who are reshaping the payments ecosystem while significantly contributing to the operational success of businesses worldwide.What You’ll DoIn this role, you will...

P-1319 At Databricks, we are driven by a passion for empowering data teams to tackle some of the world’s most challenging problems — from realizing the next mode of transportation to expediting groundbreaking medical advancements. We achieve this by developing and maintaining the premier data and AI infrastructure platform, enabling our clients to harness deep data insights to enhance their operations. Founded by engineers who prioritize customer needs, we embrace every opportunity to address technical challenges, whether that involves crafting next-generation UI/UX for data interaction or scaling our services across millions of virtual machines. And this is just the beginning. Our Developer Experience team is committed to ensuring Databricks engineers are both satisfied and exceptionally productive. We create the tools, processes, and infrastructure that significantly enhance engineering velocity as Databricks continues to grow. The ideal candidate will possess a blend of technical proficiency in various language toolchains (Scala, Rust, Python), build systems (particularly Bazel), compilers, version control systems, testing, and most importantly, a passion for improving developer experiences, complemented by a practical approach to delivering results incrementally.

At Samba TV, we revolutionize how viewers interact with streaming and broadcast video globally through our innovative data solutions and cutting-edge technology. Our mission is to enhance the viewing experience for everyone. By harnessing our extensive data, we empower media companies to connect with audiences and help advertisers engage viewers while effectively measuring reach across all devices. Our unique perspective on culture is driven by our global data footprint and AI-powered insights.We are seeking a highly skilled Senior Software Engineer to join our dynamic Identity team based in Amsterdam. This team is responsible for building and maintaining the core systems that facilitate Samba TV’s cross-device identity resolution, data onboarding, and distribution capabilities. These systems form the essential link between our data and various stakeholders including advertisers, agencies, data partners, and internal product teams.In this role, you will be responsible for designing, developing, and operating robust data engineering systems that efficiently ingest, transform, and deliver identity-linked data at scale.To succeed in this position, you should possess over 8 years of experience, take significant ownership of complex platform components, and collaborate effectively with other senior engineers to establish cohesive technical direction. You will serve as a trusted advisor in design and architecture discussions, provide mentorship to junior team members, and be a cooperative partner to adjacent teams.

Role overview Speechify seeks a Senior Software Engineer specializing in Windows and desktop applications. This role involves designing and building software aimed at improving accessibility and enhancing the user experience. What you will do Develop and enhance desktop applications for the Windows operating system Collaborate with design, product, and engineering teams to deliver new features and updates Maintain high standards for software quality and usability Location This position is located in Amsterdam, Netherlands.

Established in 2015, Shield AI is a pioneering venture-backed deep-tech firm dedicated to safeguarding service members and civilians through innovative intelligent systems. Our cutting-edge products include the V-BAT and X-BAT aircraft, as well as the Hivemind Enterprise and Hivemind Vision product lines. With a global presence across the U.S., Europe, the Middle East, and the Asia-Pacific, Shield AI's technology plays a vital role in supporting operations worldwide. Explore more about us at www.shield.ai. Connect with Shield AI on LinkedIn, X, Instagram, and YouTube. As a Senior Software Engineer specializing in Autonomy Applications, you will leverage your technical expertise to assist clients during the deployment and utilization of Shield AI's enterprise software solutions. This role requires close collaboration with customers to comprehend their needs and ensure the effective integration of AI and Autonomy developments into their operations.

Join our innovative team at Databricks as a Senior Backend Software Engineer, where you'll contribute to cutting-edge data solutions and scalable systems. Collaborate with a talented team to design and implement robust backend services that power our platform, enabling businesses to unlock the full potential of their data.

What will you do?In the Flight Test and Certification department, aircraft systems are regularly integrated into various platforms. To facilitate the integration of these systems, we utilize a range of ground support equipment and measurement devices. We keep track of important details such as location, calibration dates, and equipment loans in a dedicated database with a front-end application. The current version of this application, developed in the early 2000s, is in need of an update. Additionally, new stakeholders have emerged who require extra functionalities.During your internship, you will engage with stakeholders to gather their requirements for functionalities, create a system design, and implement it.OutcomeYou will deliver a revamped equipment database and front-end application that allows our engineers to monitor the status of our equipment effectively.

Be Yourself at ProtolabsWe embrace diversity and are an equal opportunity employer. We encourage individuals from all backgrounds to apply, even if they don’t meet every single qualification. Your unique perspective can help us grow and innovate.Why Choose Protolabs?As leaders in digital manufacturing, we attract doers, makers, and innovative thinkers who approach their work with an entrepreneurial mindset. Our culture revolves around delivering meaningful work that introduces new products to the market at unmatched speeds. We take pride in our diverse team, which is smart, genuine, humble, and passionate. It’s our people who inspire creativity and make our workplace feel like home.Join Our Team as a Senior Backend Engineer!This position is hybrid and open to candidates located in the Netherlands.The Manufacturing Partner Marketplace is the operational backbone of the Protolabs Network. We oversee the entire order lifecycle, from matching orders to the right manufacturing partners through production and quality control to ensuring timely delivery. Our role is crucial for maintaining seamless operations and customer satisfaction.In this role, you will develop systems that drive the marketplace, including automated auctions, order allocation, supplier tools, production workflows, global logistics, quality control, and internal operations tools. We seek a pragmatic problem solver who thrives in a dynamic environment and takes ownership of both the business challenges and technical solutions.

About UsAsula is a pioneering bitcoin company dedicated to developing cutting-edge financial products that bridge the gap between bitcoin, blockchains, stablecoins, and traditional finance. Currently, we are focused on our innovative mobile application, Dawn, which empowers users to save and enhance their wealth through bitcoin and stablecoins. In addition to Dawn, our initiatives include enabling seamless bitcoin swaps and credit access for holders of all sizes via onchain protocols.RoleWe are in search of a versatile Senior Software Engineer to join our dynamic team, contributing across the backend stack to breathe life into our products. In this role, you will be expected to:Design and implement robust backend systems that support both user-facing applications (like Dawn) and essential protocol components.Architect scalable and resilient services, including APIs, stateful services, and blockchain data pipelines capable of handling real-world demands.Drive significant architectural enhancements to the codebase while establishing best practices in our evolving organization.Mentor team members to elevate long-term architecture and code quality.QualificationsA minimum of 3 years of hands-on experience as a systems engineer, designing and managing production services with real traffic, preferably in finance, trading, or blockchain sectors.In-depth knowledge of distributed systems, data modeling, and network architecture — with a focus on latency, throughput, and fault tolerance.Proficiency in at least one strongly-typed backend programming language (Rust, Go, or C++) and comfortable navigating various frameworks, APIs, and infrastructure.A genuine interest in bitcoin, blockchains, and onchain finance.Nice to HavesExperience utilizing stablecoins and/or bitcoin in your everyday transactions.Background in developing low-latency systems for trading.

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.