Senior Backend Engineer at Riskified | Lisbon

Role overview Riskified seeks a Senior Backend Engineer in Lisbon to help build and maintain the backend systems that power its fraud prevention platform. The position centers on improving efficiency and reliability for clients around the globe. This work supports the technical foundation that enables Riskified’s services to scale and perform. What you will …

Role overview Riskified seeks a Backend Engineer in Lisbon to help build and maintain the systems behind its fraud prevention products. This position centers on developing backend applications that keep client transactions running smoothly. The work involves ensuring reliability and scalability across key services. What you will do Design, develop, and maintain backend applications that support fraud prevention efforts Work with colleagues from other teams to deliver solutions that perform well under load Help ensure the stability and scalability of systems that process client transactions

About UsAt Riskified, we empower businesses to unlock their ecommerce potential by mitigating risks. Our platform is trusted by some of the world’s leading brands and publicly traded companies to safeguard against chargebacks, combat fraud, and enhance customer loyalty. Our AI-driven fraud and risk intelligence solutions analyze interactions in real-time, offering robust identity insights that help our partners succeed in the competitive online landscape. We proudly collaborate with renowned companies across various industries, including Acer, Gucci, Lorna Jane, GoPro, and many more.We cultivate a collaborative and dynamic work environment, where innovative ideas flourish and meaningful contributions are valued. Our commitment to teamwork and excellence drives us to make a lasting impact in the ecommerce space, making Riskified a workplace of choice.About the Role*** Please note that this position will be recruited, hired, and employed by a third party.We are in search of a skilled and passionate Senior Data Platform Engineer to enhance and maintain our core data platform products, ensuring optimal performance, scalability, and stability. As a data-driven organization, we are committed to managing an increasing influx of data daily.In this role, you will be a vital part of the Data Platform team, responsible for overseeing a large-scale production data platform that serves as the backbone of our products. You will develop self-service tools to enhance platform accessibility for users in our R&D and Analytics departments, and act as a knowledge hub, consulting and sharing your expertise with your colleagues.What You’ll Be DoingLead the development of AI-ready foundations for our data platform, focusing on data quality, contracts, observability, and self-service tools that empower machine learning and AI-driven initiatives.Manage, provision, and monitor various platform products.Enhance the application infrastructure tightly integrated with our Data Platform tools.Provide guidance to development teams and mentor fellow team members.Utilize your creativity to solve complex, high-scale data challenges.Research and evaluate new technologies, starting from POC to deployment.

About Us At Riskified, we empower businesses to drive eCommerce growth by eliminating risk. Our solutions are trusted by some of the world’s leading brands and publicly traded companies in the online space, providing guaranteed protection against chargebacks, fraud, and policy abuse while enhancing customer retention. Our AI-driven fraud and risk intelligence platform, managed by a robust team of eCommerce risk analysts, data scientists, and researchers, delivers real-time insights and decisions based on individual user interactions. We proudly partner with exceptional companies across various industries, including Acer, Gucci, Lorna Jane, GoPro, and many others. We thrive in a collaborative environment, working alongside talented individuals to create and enhance impactful products. The opportunities to innovate and contribute give us a profound sense of purpose, making our work at Riskified truly meaningful. About the Role As a Full-Stack Engineer in Riskified’s Core Services Group, you will develop and maintain end-to-end applications using a variety of technologies. In this dynamic, agile environment, you will play a crucial role in expanding Riskified’s ecosystem. Our engineers take full responsibility for their work, from feature planning with Product and Design teams to selecting technologies, designing architecture, coding, reviewing, deploying in a CI/CD environment, and monitoring performance post-deployment. You will work on customer-facing applications, including a core web tool that enables merchants to analyze orders, take actions, and gain insights through advanced analytics. Whether you are creating precise user interfaces, developing resilient backend logic, or optimizing infrastructure for scalability, you will be engaged in all aspects of the development process. Our Technology Stack: Scala, Spark, Node.js, Ruby, React, Postgres, Elastic, Redis, AWS, Kafka, Docker, Kubernetes, CircleCI, and much more. What You'll Be Doing Design and build a highly reliable, available, and scalable architecture for our core services and web applications in a new, promising product. Deploy code to production daily through our advanced CI/CD pipelines. Actively maintain production systems to ensure smooth operations. Contribute to planning the team roadmap and product features. Collaborate with design and product teams to define and implement new features. Qualifications B.Sc. in Computer Science or equivalent certifications. 3+ years of proven experience in full-stack development. Strong familiarity with various programming languages and frameworks. Excellent problem-solving skills and a passion for technology. Ability to work collaboratively in a fast-paced environment.

About Us At Riskified, we empower businesses to achieve ecommerce growth by mitigating risks. Our platform is trusted by some of the world’s most prestigious brands and publicly traded companies, offering guaranteed protection against chargebacks, combating fraud and policy abuse on a large scale, and enhancing customer retention. Our AI-driven fraud and risk intelligence platform is developed and managed by an extensive team of ecommerce risk analysts, data scientists, and researchers, analyzing each interaction to deliver real-time decisions and comprehensive identity-based insights. We proudly partner with remarkable companies across various industries, including Acer, Gucci, Lorna Jane, GoPro, and many more. We thrive in a collaborative environment, working alongside talented individuals to create and improve products that genuinely matter. The opportunities to innovate and contribute give us a sense of purpose, creating a lasting impact and motivating us to choose Riskified every day. About the Role As a Senior Full-Stack Engineer in Riskified’s Core Services Group, you will be responsible for designing, building, and maintaining end-to-end applications using diverse technologies. Working in a fast-paced, agile environment with cutting-edge tools, you will play a key role in expanding Riskified’s ecosystem. Our developers take full ownership of their work, from feature planning with Product and Design teams to technology selection, architectural design, coding, code reviews, deployment in a CI/CD environment, and ongoing monitoring post-deployment. The team primarily focuses on customer-facing applications, including a core web tool that enables merchants to review orders, take actions, and gain insights through advanced analytics. You will have the opportunity to engage in all aspects of development, whether that involves crafting precise UI, developing robust backend logic, or optimizing infrastructure for scalability. Our Technology Stack: Scala, Spark, Node.js, Ruby, React, Postgres, Elastic, Redis, AWS, Kafka, Docker, Kubernetes, CircleCI, and more. Your Responsibilities Design and develop a highly reliable, available, and scalable architecture for our core services and web applications in a promising new product. Deploy your code to production daily using advanced CI/CD pipelines. Actively manage production systems to ensure smooth operation. Contribute to planning the team roadmap and product development. Collaborate with design and product teams to define and implement new features.

About UsAt Riskified, we empower businesses to drive e-commerce growth by mitigating risk. Our platform is trusted by some of the world's leading brands and publicly traded companies in their online operations. We provide guaranteed protection against chargebacks, combat fraud and policy abuse at scale, and enhance customer retention. Our AI-powered fraud and risk intelligence platform, developed by a dedicated team of e-commerce risk analysts, data scientists, and researchers, analyzes each interaction to deliver real-time decisions and insightful identity-based analytics. We're proud to partner with a diverse range of exceptional companies, including Acer, Gucci, Lorna Jane, and GoPro.We excel in a collaborative environment that fosters innovation and product development that matters. The opportunity to contribute meaningfully drives our passion and purpose at Riskified, making it a fulfilling place to work.About the Role*** A third party will recruit, hire, and employ this position.The Data Science department is integral to our company, adding value through the development of algorithms and production-grade analytical solutions. We utilize advanced techniques such as classification models, NLP, anomaly detection, and deep learning to maximize the value of data. As a Data Scientist, you will engage in the entire project development cycle, implementing end-to-end solutions. This role requires a strong foundation in quantitative and analytical skills, proficiency in statistical modeling and machine learning, and a technical aptitude paired with a passion for problem-solving and driving data-informed decision-making.What You'll Be DoingData Exploration and Preprocessing: Collect, clean, and transform large, complex data sets from diverse sources to ensure data quality and integrity for analysis.Statistical Analysis and Modeling: Utilize statistical methods and mathematical models to uncover patterns, trends, and relationships in data, while developing predictive models.Machine Learning: Create and deploy machine learning algorithms, including classification, regression, clustering, and deep learning techniques, to address business challenges and enhance processes.Feature Engineering: Identify relevant features from structured and unstructured data sources, designing new features to improve model performance.

About Us At Riskified, we empower businesses to fuel their ecommerce growth by mitigating risks. Our platform is trusted by some of the largest global brands and publicly traded companies, offering guaranteed protection against chargebacks and combating fraud and policy abuse at scale, all while enhancing customer retention. With a dedicated team of ecommerce risk analysts, data scientists, and researchers, our AI-driven fraud and risk intelligence platform analyzes individual interactions to deliver real-time decisions and robust identity-based insights. We proudly partner with leading companies across various industries, including Acer, Gucci, Lorna Jane, and GoPro. We thrive in a collaborative environment, working alongside talented individuals to build products that truly matter. Our mission-driven approach provides us with a sense of purpose and a lasting impact, which is why we choose to be part of Riskified every day. About the Role We are seeking a Web Development Team Lead to oversee and enhance our global, multilingual marketing website built on WordPress. This position straddles the realms of marketing, branding, and technology, with accountability for the website's performance, scalability, and reliability across diverse regions and languages.In this hands-on leadership role, you will guide a small web development team, contribute directly to code, and set the technical vision for building, shipping, testing, and scaling our marketing web platform. You will collaborate closely with Marketing, Design, and external partners to deliver an exceptional digital experience while fostering the technical growth of the team. What You'll Be Doing Technical Ownership & Delivery Take full ownership of the global marketing website, focusing on architecture, performance, security, scalability, and reliability. Design, develop, and maintain WordPress sites using Bedrock and Sage with Laravel-based architecture principles. Build and manage custom Gutenberg blocks and reusable components. Lead technical planning and execution for new features, integrations, and growth experiments. Optimize site performance, SEO, accessibility, and Core Web Vitals metrics. Ensure high availability through monitoring, maintenance, and incident response. Team Leadership & Growth Lead and mentor a web development team with a focus on continuous improvement and technical excellence.

About the Role tgs is looking for a Backend Engineer (Python or Go) to join the Unbabel division in Lisbon. This team builds and maintains backend services that support enterprise-grade translation solutions across platforms. The work centers on making language technology smarter and more seamless for clients worldwide. What You Will Do Design and implement core backend services and reliable system architectures. Build, maintain, and improve codebases with an emphasis on testability and efficiency. Develop, optimize, and support key services and infrastructure in live production environments. Enhance system architecture to improve scalability, resilience, and performance. Analyze complex technical problems and help prioritize initiatives alongside product and engineering teams. Encourage continuous improvement, automation, code quality, and strong architectural practices. Work with teams across disciplines to deliver solutions that adapt to changing business and technical needs. Troubleshoot and prototype quickly to address platform and service challenges as they arise. Location Lisbon, Lisboa, Portugal

About the Role TransPerfect’s Unbabel team in Lisbon is looking for a Backend Engineer with experience in Python or Go. This role focuses on building and improving backend services that power cross-platform translation solutions for enterprise clients. The team values reliability, scalability, and seamless performance as it develops intelligent language products. Main Responsibilities Design and implement reliable backend architectures and core services. Create, maintain, and optimize codebases with attention to testing and efficiency. Develop, support, and enhance critical services in production environments. Advance the architecture to support scalability, resilience, and high performance. Analyze complex technical problems and help prioritize initiatives with product and engineering teams. Promote continuous improvement, automation, code quality, and adherence to architectural best practices. Work with cross-functional teams to deliver solutions that meet changing business and technical needs. Troubleshoot and prototype to address platform and service challenges quickly. Location This position is based in Lisbon, Lisboa, Portugal.

About Us At Riskified, we empower businesses to unlock eCommerce growth by mitigating risk. Major global brands and publicly traded companies trust us for guaranteed protection against chargebacks, fraud prevention, and enhancing customer retention. Our AI-driven fraud and risk intelligence platform is backed by the largest team of eCommerce risk analysts, data scientists, and researchers, delivering real-time insights and identity-based decisions. We are proud to partner with iconic companies across various sectors, including Acer, Gucci, Lorna Jane, GoPro, and many more. We thrive in a collaborative work environment where creative minds come together to innovate and enhance impactful products. Our culture fosters opportunities for personal and professional growth, allowing us to leave a lasting impression in the industry. About the Role *** This position will be recruited, hired, and employed by a third party. At Riskified, we prioritize design and strive to create a cohesive and distinctive experience across all platforms. Our design team collaborates on diverse projects, from application UX/UI to marketing collateral. We are on the lookout for a passionate and organized Marketing Designer to join our brand design group. In this pivotal role, you will transform our sophisticated technology into a captivating visual narrative that boosts demand and accelerates our sales process. You will benefit from a dedicated professional development budget and mentorship from senior design leaders to further enhance your skills. What You'll Be Doing Create stunning and diverse cross-platform marketing materials from concept to launch, including layouts, visuals, and illustrations for both digital and print. Ensure all design materials are aligned with core messaging and tailored to resonate with the audience for each project. Convert complex concepts into engaging visuals, infographics, and data visualizations that simplify the understanding of Riskified’s technology and products. Collaborate closely with lead generation teams including regional marketing, global demand generation, and content to design assets that enhance interest and engagement.

Riskified is looking for a Performance Marketing Specialist in Lisbon to help shape and execute marketing strategies that support brand growth and customer acquisition. This position centers on building and running campaigns that deliver measurable results. Role overview This role involves developing and launching performance-focused marketing initiatives. Working with teams across the company, the Performance Marketing Specialist ensures campaigns stay on track with business goals and deliver strong outcomes. What you will do Create and implement marketing strategies aimed at increasing brand visibility and attracting new customers Work closely with colleagues from other departments to align campaigns with overall business objectives Monitor campaign performance and analyze key metrics Share insights and recommendations to improve future marketing efforts Requirements Experience in performance marketing or a similar marketing function Strong analytical skills for tracking and interpreting campaign data Ability to collaborate with cross-functional teams

Emma Sleep is hiring a Senior Backend Engineer with expertise in Golang to help shape the technology behind its global platform. This position is based in Lisbon and centers on developing and refining backend systems that keep Emma Sleep’s operations running smoothly. Key responsibilities Design, build, and maintain backend services using Golang Improve system performance and scalability Support the reliability and efficiency of Emma Sleep’s technology platform Location This role is located in Lisbon.

The Tripadvisor Group is dedicated to connecting people with experiences that are truly worth sharing. Our mission is to be the most trusted source for travel and experiences globally. By leveraging our esteemed brands, cutting-edge technology, and extensive capabilities, we connect a worldwide audience with partners through engaging content, expert travel advice, and two-sided marketplaces offering experiences, accommodations, restaurants, and more. The Tripadvisor Experiences Engineering team operates across Europe, overseeing Tripadvisor.com, the Tripadvisor mobile applications, and their supporting infrastructure. We manage the systems that empower operators to expand their businesses and enable third parties to access our extensive inventory. Additionally, we provide essential tools that equip our customer service teams to deliver world-class support to travelers and operators around the globe. We are on the lookout for a Software Engineer II to join our rapidly expanding team. This position is available for candidates residing within a commutable distance (typically up to 2 hours) from one of our office hubs in Lisbon, Saldanha. We embrace flexibility in work arrangements while also valuing the importance of in-person interactions for collaboration and connection. Expect a remote-first working model with occasional in-person gatherings at your closest office for team bonding, strategic planning, or other significant moments. At Tripadvisor, our engineers are adaptable and relish tackling diverse technical challenges. This is primarily a backend-focused full-stack role, where you'll predominantly work on backend tasks, with occasional frontend projects. While a strong desire to learn is essential, prior expertise in frontend development is not a prerequisite; we provide on-the-job training. Within our dynamic environment, our engineers collaborate closely with product managers and designers, engaging in the entire software development lifecycle—from design and coding to testing and deployment. Most of our engineers release code to production every few days, following a daily release cycle. Our tech stack includes Java, React, TypeScript, GraphQL, Kubernetes, SQL, and NoSQL databases, all hosted on AWS. While familiarity with every technology is not mandatory, a strong willingness to learn is crucial. You should have experience with a statically typed, object-oriented programming language such as Java, C#, or C++. Perks of Working at Tripadvisor Competitive compensation packages, including base salary and annual bonuses.

Join our dynamic team at Renesas Electronics as a Senior Backend Software Engineer. In this critical role, you will leverage your expertise to develop and enhance cutting-edge backend solutions that power our innovative products. You will collaborate with cross-functional teams to design scalable systems, ensuring high performance and reliability.

Join the Tripadvisor Group, where we connect people with unforgettable experiences and strive to be the world's most trusted source for travel and adventure. Utilizing our vast portfolio of travel brands and advanced technology, we aim to engage a global audience and facilitate meaningful connections with our partners across diverse travel categories including accommodations, restaurants, and unique experiences. The Tripadvisor Experiences Engineering team, distributed across Europe, plays a pivotal role in managing Tripadvisor.com and our mobile applications, alongside the supporting infrastructure. We empower operators to grow their businesses while enabling third parties to leverage our comprehensive inventory. Our dedicated team provides essential tools that support our customer service representatives in delivering exceptional service to travelers and operators worldwide. We are in search of a Senior Software Engineer to become part of our dynamic team. This position is available to candidates who can commute (generally within a 2-hour radius) to one of our office hubs in Lisbon. We appreciate flexibility in work arrangements and value the importance of in-person interactions for collaboration and connection. Expect a remote-first work model complemented by periodic office gatherings for team planning and engagement. At Tripadvisor, our engineers thrive on tackling a diverse array of technical challenges. This backend-focused full-stack role primarily involves backend development, with opportunities to engage in frontend projects as well. While a willingness to learn is essential, expertise in frontend development is not required at the outset, as we offer on-the-job training. Our collaborative environment is designed for productivity, where engineers work closely with product managers and designers throughout the entire software development lifecycle—from design and coding to testing and deployment. Most engineers deploy code to production every few days within our daily release cycle. The technology stack at Tripadvisor includes Java, React, Typescript, GraphQL, Kubernetes, SQL, and NoSQL databases on AWS. While strong proficiency in Java is mandatory, familiarity with the entire stack is not a prerequisite; a passion for learning is what we value most. Why Work with Us? Competitive compensation packages, including base salary, annual bonuses, and more. “Work your way” approach offering flexibility to cater to your lifestyle and needs.

Join our dynamic team at Renesas Electronics as a Senior Backend Engineer, specializing in Django or FastAPI. In this role, you will be responsible for developing robust backend systems that support our innovative electronics solutions. We are looking for a passionate engineer who thrives in a collaborative environment and is eager to tackle complex technical challenges.

Join the Kaizen Gaming Family!At Kaizen Gaming, the driving force behind Betano, we stand as one of the largest GameTech companies globally, operating across 19 markets. Our commitment to leveraging state-of-the-art technology empowers us to deliver unparalleled experiences to our millions of valued customers.Our vibrant team of over 2,700 diverse 'Kaizeners', hailing from more than 40 nationalities and spanning three continents, is what sets us apart. We take pride in being recognized among the Best Workplaces in Europe and have earned the prestigious Great Place to Work certification across our offices. Are you ready to Press Play on your potential?About the RoleAs a Senior Backend Engineer, you will be an integral part of a self-sufficient Agile team, collaborating closely with the Product Owner, Agile Delivery Lead, Automation Testers, and fellow Software Engineers to create a competitive edge for Kaizen while delivering a unique online experience to our customers. You will also engage with talented backend professionals within our Backend Chapter.Your Responsibilities Include:As a Senior Software Engineer at Kaizen, you will manage a variety of projects, ranging from our customer-facing websites and mobile applications to our internal tools and backend services, all designed to handle high volumes of traffic.Take full ownership of our applications throughout an engaging development journey.Develop innovative solutions from concept to production.Transform requirements into efficient and sophisticated technological systems, leveraging our large-scale, highly available infrastructure.Design, build, and maintain efficient, reusable, and reliable code.Explore new technologies to discover efficient solutions for everyday challenges.Deliver high-value features swiftly.Challenge existing processes and foster improvement within the team and product.

Join inetum2 as a Senior Cloud Engineer and be part of a dynamic team dedicated to transforming cloud solutions. We are looking for experienced professionals who can design, implement, and manage cloud infrastructure, ensuring optimal performance and security.

Join our dynamic team at inetum2 as a Java Backend Engineer. We are looking for a talented individual who is passionate about backend development and eager to contribute to innovative technology solutions. In this role, you will collaborate with cross-functional teams to design and implement high-quality software solutions that meet our clients' needs.

inetum2 is seeking a highly skilled Senior Infrastructure Engineer to join our dynamic team in Lisbon. In this role, you will be responsible for designing, implementing, and maintaining our infrastructure systems, ensuring optimal performance and security. You will collaborate with cross-functional teams to drive innovative solutions and enhance our technological capabilities.The ideal candidate will possess a strong background in infrastructure management, cloud technologies, and network security. If you are passionate about technology and thrive in a fast-paced environment, we would love to hear from you!