Full-stack Engineer ( Node.js )

Job title:

Full-stack Engineer ( Node.js )

Company:

SEON Technologies

Job description

SEON is the leading fraud prevention system of record, catching fraud before it happens at any point across the customer journey. Trusted by over 5,000 global companies, we combine your company’s data with our proprietary real-time signals to deliver actionable fraud insights tailored to your business outcomes. We deliver the fastest time to value in the market through a single API call, enabling quick and seamless onboarding and integration. By analyzing billions of transactions, we’ve prevented $200 billion in fraudulent activities, showcasing why the world’s most innovative companies choose SEON.The Device Intelligence Team is expanding, and we are seeking a highly motivated and talented Full-stack Engineer ( Node.js )with a strong front-end orientation to join our innovative team. Our core products are three robust SDKs for device fingerprinting across iOS, Android, and web (JS). We are making significant investments in the geofencing domain, particularly within the US market, making this an exciting time to join our team.This role will report to the Engineering Manager, Device Intelligence.This role offers flexibility and is based in our Budapest office with a hybrid schedule of being in the office approximately three days per week.What You’ll Do:

• Develop and maintain the front-end of our internal admin site, ensuring a user-friendly experience.
• Implement and improve user interfaces for new features and functionalities, particularly those related to our geofencing initiatives.
• Collaborate closely with product managers, designers, and other engineers to define, design, and ship new features.
• Contribute to the full development lifecycle, from concept and design to testing and deployment.
• Troubleshoot, debug, and optimize front-end and back-end components.
• Stay informed about emerging technologies and industry trends, advocating for adoption where beneficial.
• Monitor changes in browser behavior and advancements in device fingerprinting techniques.

What You Bring:

• Prior experience or domain knowledge in geofencing, especially within the US market.
• Mobile development experience (iOS or Android) or a deep understanding of how mobile operating systems interact with applications.
• Extensive knowledge of internet and browser functionalities, including network protocols, browser rendering, and performance optimization.
• Ability to collaborate in an agile development environment.
• Strong problem-solving skills and written English communication.

Amazing if You Also Have:

• Experience with AWS or other cloud providers, particularly:

• Lambda
• DynamoDB
• Auto Scaling Groups
• Exposure to monitoring tools like Kibana, Grafana, or Prometheus.
• Familiarity with:

• ElasticSearch
• Redis
• Kubernetes
• ArgoCD
• GitHub Actions
• Understanding of data ingestion systems or web scraping is a plus.

Expected salary

Location

Budapest

Job date

Fri, 18 Jul 2025 22:58:48 GMT

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