Senior Full-Stack Engineer (NodeJS) at SEON | Budapest

Role Overview Cision is hiring a Senior Staff Full Stack Software Engineer to help build and improve our Infrastructure Platforms. This remote position is open to candidates based in Hungary. What You Will Do Work closely with a skilled team to design, develop, and maintain core infrastructure systems. Contribute to projects that support client-facing products and internal tools. Drive improvements and deliver solutions that support both reliability and scalability across our platform.

Role Overview Cision builds software that supports large-scale, global enterprise infrastructure. Our teams create tools for platform, operations, and engineering groups, helping them improve visibility, reliability, automation, and decision-making across complex systems. The Senior Staff Full Stack Software Engineer – Infrastructure Platforms will lead the design and implementation of internal platforms used by enterprise infrastructure teams. This is a senior individual contributor position, focused on technical leadership and hands-on delivery. What You Will Do Oversee architecture and implementation of internal platforms for infrastructure teams Guide design decisions and set engineering standards within the team Deliver solutions that span backend services, data pipelines, and user-facing applications Work independently in uncertain environments, managing systems from initial design through production operations Act as a technical leader, mentoring peers and influencing engineering practices What We Look For Extensive experience as a full stack software engineer, ideally in enterprise or infrastructure-focused environments Proven ability to lead technical projects and set engineering direction Comfort working autonomously and making decisions in ambiguous situations Experience managing systems end-to-end, from architecture to production Location This is a remote role based in Hungary. About Cision Cision values curiosity, collaboration, and innovation. Team members contribute to meaningful projects that support major brands and shape future conversations. Every voice matters and diverse perspectives drive our success.

Join SEON, a leader in fraud prevention and Anti-Money Laundering (AML) compliance, where we empower businesses globally to combat fraud and safeguard their revenue. Utilizing over 900 real-time, first-party data signals, our platform enhances customer profiles, identifies suspicious activities, and optimizes compliance workflows, all from a single interface. Our innovative solutions have enabled clients to achieve a remarkable 95% reduction in fraud and a staggering 32x return on investment (ROI). As we expand rapidly, our collaborations with forward-thinking digital brands like Revolut, Wise, and Bilt continue to drive our success.We are seeking a Senior Full-Stack Engineer who not only possesses robust software engineering skills but also embodies a mentoring spirit to assist our engineering teams and collaborate with our technical leadership. At SEON, we embrace a product-led growth strategy.The Customer Platform Team is at the core of SEON’s operations: we design and develop essential services that support the entire SEON ecosystem along with the primary application used by customers. Our ongoing mission includes enhancing user experience and workflow for our clients by continuously adding innovative features that bolster their fraud analysis capabilities. Responsibilities encompass core functions such as backend and frontend development, research and development, design, and database management.This position offers flexibility and is based in our Budapest office with a hybrid work schedule.

Company Overview:Zocks is an innovative AI startup backed by venture capital, dedicated to revolutionizing financial services and other sectors that prioritize security and privacy. Our founding team has extensive experience in developing real-time communication products and enterprise platforms, having worked with industry giants like Twilio, IBM, Microsoft, and Hearsay Systems. We harness the power of AI to connect human interactions with enterprise systems, beginning with the financial sector.Our mission is straightforward yet impactful: to transform business operations and streamline processes that often hinder efficiency. Our cutting-edge platform enables seamless communication while capturing essential information, allowing our clients to minimize data entry, enhance operational efficiency, and focus on what truly matters—their customers.Location: Budapest, XI. (On-site Monday to Thursday, Remote on Fridays)We are currently seeking a Senior Full Stack Engineer with a minimum of 4 years of experience to join our vibrant team of developers. As we grow and adapt, we are looking for an individual who can inject fresh ideas, bring advanced technical expertise, and share our commitment to innovation. In this pivotal role, you will contribute significantly to advancing our projects, enhancing our product suite, and addressing the complex needs of our clientele.

Join our dynamic team as a Senior Full Stack Software Engineer specializing in Fleet Control Software. In this pivotal role, you will leverage your expertise in both front-end and back-end technologies to design, develop, and maintain robust software solutions that enhance fleet management systems. Your contributions will directly impact our operational efficiency and customer satisfaction.

Are you ready to revolutionize the way the world innovates? At Formlabs, we are dedicated to developing cutting-edge tools that empower anyone to transform their ideas into reality, from advanced products to critical medical devices. Our pioneering 3D printing technology is a catalyst for innovation across more than 50,000 industry leaders globally, including esteemed companies like Apple, Google, Tesla, New Balance, and NASA. Together, we are redefining the processes of design, prototyping, and manufacturing, making them faster and more efficient than ever. As a pivotal member of the team behind FormNow, a groundbreaking new product set to reshape access to manufacturing and prototyping services, you will have a unique opportunity to influence this zero-to-one product from its inception. You will tackle complex challenges utilizing a modern tech stack. This position is ideal for an engineer passionate about building solutions from the ground up and eager to solve intricate problems in a novel domain. While your primary focus will be on this innovative project, you will also have the chance to contribute to our established, large-scale web platforms. If you are excited about creating products that enable others to innovate, we want to hear from you!

jobgether is seeking a Senior Full-Stack Engineer with strong experience in Python and React. This position is based in Hungary and focuses on building and maintaining web applications that connect front-end and back-end systems. Role overview This role involves hands-on development across both the server side and the user interface. Collaboration with other teams is a regular part of the job, aiming to deliver reliable and well-integrated features. What you will do Develop and maintain web applications using Python and React Work on both front-end and back-end tasks Collaborate with cross-functional teams to deliver solutions Focus on integration and optimizing application performance Requirements Professional experience with Python and React Ability to handle both front-end and back-end development Strong problem-solving skills and attention to performance Comfort working in a collaborative team environment

Join the dynamic team at Louis Dreyfus Company as a Senior Full-Stack Developer. In this pivotal role, you will leverage your expertise in both front-end and back-end development to create innovative software solutions that drive our business forward. You will collaborate closely with cross-functional teams to design and implement cutting-edge applications that enhance user experience and operational efficiency.

Join our dynamic team at mpsolutions as a Full Stack Web Engineer, where you will contribute to the creation and advancement of a cutting-edge, event-driven platform. Your role will encompass the design and delivery of features across the technology stack, with a particular focus on asynchronous architectures and event streaming.We foster an innovative environment that encourages the use of advanced coding tools (such as Cursor and Claude) to enhance productivity and code quality during development.Your Responsibilities:Develop and maintain backend services utilizing NestJS (Node.js/TypeScript)Create responsive and maintainable frontend applications with Angular or ReactDesign and implement event-driven and asynchronous flows, including messaging patterns and stream processingEngage with Kafka topics, producers/consumers, schemas, and delivery semantics (e.g., retries, idempotency)Collaborate on system design, API contracts, observability, and performance optimizationContribute to engineering best practices: clean code, code reviews, automated testing, and CI/CD

At Cision, we are committed to empowering individuals to make a significant impact. Your voice will be valued, your ideas cherished, and your unique viewpoint will drive our shared success. As a member of our global team, you will flourish in an environment that promotes curiosity, collaboration, and innovation, all while contributing meaningfully to the brands we enhance. Join us in revolutionizing communication and fostering authentic relationships that matter. Whether you are tackling complex challenges or pioneering bold innovations, your development is our success, and together, we’ll create the conversations of the future. Empower your impact at Cision. Be seen, be understood, be you. You will work closely with product, design, technology, and data science teams, becoming an integral part of the backend platform team to develop new backend services, processes, and components while enhancing existing ones.You will take a leadership role in reviewing code changes within your team and provide constructive feedback to uphold quality and best practices. You will actively assess technologies for applications and offer recommendations that align with team and product requirements.You’ll mentor engineers of varying experience levels, sharing your expertise in code maintainability, performance, reliability, observability, security, and functionality. With a solid grasp of the tech stack and Software Development Life Cycle (SDLC), you will make significant contributions to project success and team productivity. You may serve as a subject matter expert (SME) within the engineering organization, delivering insights to cross-functional teams. Essential Duties and Responsibilities include the following:Develop and own solutions that add value across systems while managing technical debt.Collaborate closely with engineers, product owners, and other stakeholders to align on optimal solutions that meet product objectives.Lead in fostering a Test-First mentality and emphasize quality at the code level.Help translate complex product requirements into clear, actionable technical tasks.Stay informed about technology trends and product roadmaps, providing strategic guidance to the development team.Actively support cross-functional business processes, facilitating collaboration and communication.Work with other senior-level stakeholders to ensure adherence to best practices.

Join our rapidly expanding IT service firm, renowned for its international presence and commitment to delivering exceptional IT project and operational services. Founded in Budapest, we strive to provide top-notch solutions for both local and global clients. Our strategic goal is to consistently broaden our service offerings, enhancing support for our internal partners and external customers alike. With the backing of our parent companies, we ensure a stable environment and ample professional growth opportunities. Our innovative, international setting presents exciting challenges while fostering continuous development and career advancement. Architect, develop, and sustain high-quality .NET applications within the ShopFloor sphere using technologies such as ASP/C#, Entity Framework, Blazor, HTML5, CSS3, Javascript/Typescript, MsSQL/Oracle/NoSQL, IIS, and Nuget. Engage with functional teams to delineate project requirements clearly. Enhance code for performance and scalability, emphasizing quality and security. Oversee and resolve application issues efficiently. Facilitate the migration of legacy applications to modern architectures and solutions. Produce meticulous documentation for development processes. Guide and mentor fellow developers. Requirements: Degree in IT or related field or equivalent training. A minimum of 8 years of professional experience as a .NET developer. At least 3 years of experience in UI development utilizing modern frameworks. Cultural awareness and a readiness to travel. Proficient English language skills. Desirable Skills: Experience in API development, particularly for ShopFloor applications. Familiarity with IoT or PLC software development is a plus. Knowledge of microservices development, containerization, and orchestration technologies such as Docker, Kubernetes, and PotMan. Experience with modern version control and package management solutions: SVN, Git, NPM, NodeJS, Nuget. Proficiency in using and configuring Jenkins. Experience in SAP development. Conversational proficiency in German is a plus. Benefits: Take on a pivotal and rewarding role with significant visibility. Become part of a unique growth trajectory that offers exceptional development and career prospects. Gain valuable insights into the defense and automotive sectors. Leverage our extensive network of over 40,000 talented colleagues globally. Participate in various professional training sessions and events. Enjoy a flexible international work environment with an official office in Budapest, complemented by the possibility of up to 90% remote work.

Job Overview Join Creative Chaos as a Principal Full Stack Engineer specializing in Node.js and React. In this pivotal role, you will spearhead the development of both server-side and client-side applications across diverse software platforms. Your expertise will be crucial in crafting Restful APIs and dynamic front-end interfaces. As a Principal Engineer, you'll ensure that our applications meet the highest standards of functionality, security, and performance, while maintaining a bug-free environment. You will also play a vital role in mentoring junior engineers and fostering team growth through effective training initiatives.Key Responsibilities Analyze and translate business requirements into technical specifications. Provide accurate estimates for assigned tasks. Write high-quality code and comprehensive unit tests. Collaborate effectively with cross-functional teams. Optimize code for security and performance enhancements. Maintain and troubleshoot existing systems. Keep issue tracking software updated. Communicate project status to stakeholders. Manage code versions using version control systems. Conduct research on emerging technologies. Lead and mentor a team of software engineers. Enhance team members' skills through training and guidance. Participate in the recruitment process for new team members.

Join our dynamic team at Louis Dreyfus Company as a Lead Full-Stack Developer, where you will play a pivotal role in driving innovative solutions and shaping the future of our technology landscape. In this exciting position, you will lead a team of talented developers, overseeing the design, development, and implementation of cutting-edge web applications that enhance our operational efficiency.As a Lead Full-Stack Developer, you will be responsible for collaborating with cross-functional teams to define project requirements, architecture, and timelines. Your expertise in both front-end and back-end technologies will empower you to mentor junior developers and foster a culture of learning and growth within your team.

Join the Deutsche Telekom IT Solutions team as a Senior Full-Stack Developer and be a key player in enhancing the Telekom Distribution Partner Portal (T-VPP), the go-to platform for both internal and external sales of Deutsche Telekom products. This platform empowers our distribution partners to effectively market fixed-line and mobile products through a streamlined web interface and robust B2B web service integrations.We are seeking an experienced developer with a strong background in backend development, with over 80% of your work focusing on enterprise services, integrations, security, and data processing. The role will also involve occasional frontend development tasks, making it a well-rounded opportunity for a skilled developer.Your Key Responsibilities:Engage in backend development with Spring-based enterprise applications (80%)Integrate internal and external systems utilizing REST and SOAPDesign and implement secure APIsProvide production support, monitoring, and performance optimizationParticipate in frontend development using JSF, React, or Angular (approximately 20%)

Join our dynamic team as a Mid-Senior Full-Stack Developer at Louis Dreyfus Company in Budapest. In this role, you will be responsible for designing and implementing robust web applications across the full stack, ensuring top-notch performance, and enhancing user experience. Collaborate with cross-functional teams to deliver high-quality software solutions and contribute to our innovative projects.

Join our dynamic team at Deutsche Telekom IT Solutions as a Senior Full Stack Developer. In this pivotal role, you will leverage cutting-edge technologies to design and implement innovative web applications. Collaborate with cross-functional teams to enhance user experience and drive project success. Your expertise will guide the development process from conception to deployment, ensuring high-quality solutions.

mpsolutions is searching for a Lead Infrastructure & Platform Engineer for Cloud & ML Serving to join the team in Budapest. This position centers on building and maintaining the core platform that delivers machine learning models in real time to a wide user base. The work supports AI and imaging projects, and offers the opportunity to shape both cloud and serving architecture from the ground up. Main responsibilities Design and maintain cloud infrastructure across AWS, GCP, and Azure. Deploy and scale machine learning models in production environments. Develop high-load backend systems, including APIs, inference pipelines, and data processing components. Contribute to production server code, not just operational tasks. Make platform-level decisions focused on performance, latency, and reliability. Requirements Minimum 8 years of experience in cloud, platform, or distributed systems roles. Deep knowledge of AWS, Kubernetes, CI/CD pipelines, and Infrastructure as Code (IaC). Hands-on experience with ML serving, GPU inference, and real-time systems. Strong programming skills in Python and C++ (beyond basic scripting). Understanding of scaling, latency, fault tolerance, and observability in production systems. Fluency in English. What makes this role different This position blends platform engineering, backend development, and machine learning serving. It is not a traditional DevOps job. Full ownership of the stack, from infrastructure through backend systems to ML model serving. Work on systems that handle real-world, high-scale traffic. Contribute in a startup environment where technical decisions directly shape the product. For those interested in building foundational platforms and making key technical choices, mpsolutions welcomes a conversation.

Join a globally recognized, stable financial technology company that specializes in delivering digital payment and transaction processing solutions worldwide. Our primary focus is on serving the commercial and service sectors with secure, scalable, and highly available systems that facilitate electronic payments.Our organization is highly technology-driven, building on modern cloud and data platforms and operating in enterprise environments with business-critical applications. We place significant emphasis on cybersecurity, compliance, data protection, and continuous innovation.

At Cision, we are committed to empowering individuals to create meaningful impacts. Here, your voice matters, your ideas are appreciated, and your distinct viewpoints contribute to our shared success. As a member of our global team, you'll flourish in an environment that promotes curiosity, teamwork, and innovation, all while making significant contributions to the brands we support. Join us in crafting the future of communication and fostering genuine connections that count. Whether you're tackling complex challenges or spearheading innovative solutions, your development is our success, and together, we’ll shape the conversations of the future. Empower your impact at Cision. Be recognized, be understood, be yourself. We are seeking a talented JavaScript/TypeScript Engineer to join our Listen team. You will play a crucial role in developing and enhancing a data-driven, customizable web application integrated within our partners’ platforms, delivering “light social listening” functionalities. This product equips partners with the ability to comprehend, explore, and connect with their customers across social media through actionable digital consumer insights. You will collaborate within a cross-functional, self-directed team, working closely with product managers, designers, and backend engineers to develop high-quality features from start to finish.