Software Engineer (Customer Platform Team)

About the role

We are looking for a Software Engineer to join our Customer Platform Team in Budapest. The role focuses on building and maintaining the core services that power SEON’s fraud‑prevention platform, delivering both backend and frontend features.

Key responsibilities

• Develop high‑quality NodeJS, TypeScript and React code with an emphasis on simplicity, performance and scalability.
• Design and implement new client‑ and database‑related features together with the team.
• Maintain and evolve the backend services using NestJS, REST APIs and relational databases.
• Review pull requests, suggest improvements and mentor mid‑level colleagues.
• Participate in the full software development lifecycle, from design through rollout and monitoring.

Required profile

• 4+ years of full‑stack software engineering experience (NodeJS, TypeScript, React, REST, RDBMS, NoSQL).
• Agile, end‑to‑end ownership mindset and strong problem‑solving skills.
• Proven experience with automated testing, performance optimisation and IT security best practices.
• Hands‑on experience with containerisation (Docker) and orchestration (Kubernetes).
• Experience working in self‑organising cross‑functional teams and mentoring peers.
• Fluent English communication.

Required skills

• NodeJS
• TypeScript
• React
• NestJS
• REST APIs
• RDBMS
• NoSQL
• Docker
• Kubernetes
• AWS
• Clickhouse (optional)