Senior Software Engineer (JavaScript/TypeScript, Device Fingerprinting Team)
We're looking for a fraudfighter to oversee the development of our JavaScript SDK, use the latest processes and technologies in order to build scalable, maintainable and automatically testable sw.
We usually respond within three days
Are you a champion Software Engineer? Help us boost the SEON rocketship as we assemble our super team of fraud-fighting heroes. 🚀
The Product and Software engineering department drives, oversees, coordinates, and executes the entire lifecycle of the product development. It’s a huge job, which is why we break it down into objectives and task-oriented initiatives. That involves delegating to a bunch of teams, including the Admin, Scoring, Data Enrichment, AI, Growth, Onboarding, QA, DevOps, and more – all collaborating to build the best anti-fraud tool possible.
Understanding how people connect to a website is part of SEON’s success. We are a highly technical bunch, always on the lookout for the latest news about device technology, spoofing tools, and software and hardware configurations. Our team is led by Gábor Gulyás who helps us improve our bot detection, introduce better automation systems, and improve the QA of our tools.
What you'll do:
- Implement business logic specified by researchers and improve our SDK
- Deliver high-quality code with simplicity, performance, and scalability in focus
- Maintain and develop client-side JavaScript SDK library
- Port the JavaScript SDK library to Typescript
- Maintain and develop Node.js lambda application, written in TypeScript
- Supporting, refining and suggesting improvements to the current codebase
- Make sure that the produced code is secure, stable, scalable and well tested
- Providing expertise and suggesting best practices for the team
What you bring:
- TypeScript
- JavaScript
- NodeJs
- Git, Github
Nice to have:
- React and Node.js testing
- API testing
- Docker / containerization
What we offer:
- Competitive salary package
- Hybrid remote work model
- Private health insurance covered by Medicover
- Best in class tech gear
- Flexible core hours and one hour for lunchtime comped
- 3 extra Wellness Days
- Top-notch office in central Budapest with free Club Mate, fruits, and coffee
- Complimentary weekly English courses
- AYCM membership
- Benefit from working closely with our founders
- An immediate impact on a smart, growing, multi-cultural team
- Access to all the tools for your job
- Option to enroll in development courses that can add to your skillset
What's next:
Sounds good? Great, we can’t wait to hear from you! Your first point of contact will be TÃmea Szentirmai. Say hi 👋 and we'll guide you through the next steps.
Wanna learn more about what it’s like to work at SEON first?
👉 Here you go
About SEON
The SEON journey has been unstoppable. 40 months in and we have grown from 2 to 200+ SEON Fraud Fighters, across Budapest, London, Austin, and Jakarta. With more hubs opening up in San Francisco, Singapore, we are on a mission to create a Fraud Free World. We raised Series A in March 2021 and were featured in TechCrunch as the largest A round for Hungary and now are recognised as the World’s quickest growing fraud prevention company. We are proud to continue to grow at pace, both in terms of helping the best online businesses and democratizing fraud-fighting!
Tech stack we use:

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- Department
- Engineering
- Locations
- Budapest Office
- Remote status
- Hybrid Remote
- Monthly Gross Salary Range
- 1,000,000 - 2,000,000 HUF

Senior Software Engineer (JavaScript/TypeScript, Device Fingerprinting Team)
We're looking for a fraudfighter to oversee the development of our JavaScript SDK, use the latest processes and technologies in order to build scalable, maintainable and automatically testable sw.
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