Senior Full Stack Engineer

2 weeks ago

Budapest, Hungary SEON Technologies Full time

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.

A Senior Full Stack Engineer in our organization brings strong software engineering expertise first but also comes with a strong mentoring mindset to support engineering teams and work closely with our engineering leadership. SEON relies on a product-led growth approach.

Our Customer Platform Team is the heart of SEON: we develop core services supporting the whole system of SEON as well as the main customer facing application. We’re continuously adding new features to improve the UX and workflow for our customers and their fraud analysis capabilities. It’s a mission that involves core product functions such as backend and frontend development, R&D, design, and database development.

This is a hybrid role and the ideal candidate will be based in Budapest. 



  • At least 7+ years experience in full stack software engineering (TypeScript, React, REST, RDBMS, NOSQL)
  • Agile & iterative mindset (end-to-end responsibility; you build it, you run it)
  • Strong experience in automated tests
  • Strong experience in performance optimization
  • Knowledge & understanding of IT security
  • Experience in designing modular systems and refactoring / decoupling monoliths, working with microservices
  • Familiarity with event-driven architecture
  • Experience in containerization (Docker) and Kubernetes
  • Experience in continuous integration and delivery
  • Experience working in self organizing cross-functional teams
  • Excellent problem-solving skills
  • Experience in mentoring senior and mid-weight colleagues
  • English Language Proficiency
  • Experience in pair programming, TDD and Trunk Based Development (pro)
  • Experience in AWS (pro)
  • Experience in NestJS (pro)

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.

A Senior Full Stack Engineer in our organization brings strong software engineering expertise first but also comes with a strong mentoring mindset to support engineering teams and work closely with our engineering leadership. SEON relies on a product-led growth approach.

Our Customer Platform Team is the heart of SEON: we develop core services supporting the whole system of SEON as well as the main customer facing application. We’re continuously adding new features to improve the UX and workflow for our customers and their fraud analysis capabilities. It’s a mission that involves core product functions such as backend and frontend development, R&D, design, and database development.

This is a hybrid role and the ideal candidate will be based in Budapest. 


,[Contribute to our Customer Platform team, which is an essential part of our fraud prevention solution, Deliver high-quality TypeScript and React code with simplicity, performance, and scalability in mind, Work together with the team to design and implement cutting-edge client and database-related application features, Maintain & develop TypeScript, React, NestJS, REST, RDBMS & backend of our applications, Supporting, refining and suggesting improvements to the current codebase, Providing expertise, reviewing pull requests of other team members, suggesting improvements and best practices for the team, Help during the whole Software Development Life Cycle, including the design of new features and services, Supporting and mentoring members of the team, Hiring and growth of the team] Requirements: REST, AWS, Agile, Docker, CICD, Mentoring, React, TypeScript, REST API, Team management, RDBMS, NoSQL, Microservices, Continuous integration, TDD, Nest.js, Node.js, Kubernetes, JavaScript Tools: GitLab, GitHub, Agile, Scrum. Additionally: Training budget, Private healthcare, Small teams, Lunch card, Employee referral bonus, Employee stock purchase plan, International projects, Mental Health Support, Eye Care, Masterclazz training, Parental Leave, Language classes, Free coffee, Free snacks, Free beverages, Free lunch, In-house trainings, Modern office, Startup atmosphere, Free breakfast, Bike parking, Shower.

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