Senior Software Engineer - Krakow, Poland
Core
Design and develop high-scale, event-driven backend systems for a new product that powers fraud and impersonation detection for cybersecurity and public safety teams.
Role type
Senior Software Engineer (Backend)
Builds
High-performance APIs and event-driven architectures on AWS
Domain
Cybersecurity / Digital Risk Protection
Deliverable
production ML models
Required skills
Node.js, TypeScript, AWS (Lambda, ECS, S3, RDS), System Design, Event-driven Architecture, Testing Frameworks (Vitest, Jest, Playwright)
Preferred skills
Go, Distributed Systems, LLMs/AI Tooling, React, SQL/NoSQL, Docker, Kubernetes, CI/CD
Technologies
Node.js, TypeScript, AWS, Vitest, Jest, Playwright, Go, React, Docker, Kubernetes
Responsibilities
Develop and maintain backend services; Design and implement high-performance APIs; Build scalable, reliable systems; Lead feature development end-to-end; Mentor teammates and promote best practices
Seniority
Senior, hands-on IC
