Fullstack Software Engineer (JavaScript)
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We’re building a cross-browser Fingerprint SDK and a high-performance backend for fraud detection and risk analysis. We’re looking for a Software Engineer who enjoys working close to the browser, handling large-scale data, and solving non-trivial engineering problems.
What You’ll Work On
- Design, develop and maintain a cross-browser Fingerprint SDK using Vanilla JavaScript/TypeScript, focused on performance, accuracy, and resilience against ad blockers and privacy restrictions
- Build backend services with Node.js (Express) to process and analyze large volumes of collected data
- Work with ClickHouse for analytical workloads and MySQL for transactional data
- Design and optimize raw SQL queries for high-performance data access
Contribute to fraud detection and risk analysis systems by identifying patterns and anomalies in data
What We’re Looking For
- 7+ years of experience with JavaScript/TypeScript and raw Node.js (Express)
- Strong experience with JavaScript in the browser
- Experience writing and optimizing raw SQL queries
- Familiarity with high-volume data processing or analytics systems
Bonus: experience with fingerprinting, anti-fraud systems, or cybersecurity
Nice to Have
- Experience dealing with ad blockers, tracking prevention (Safari/Firefox), or similar constraints
- Background in security, fraud detection, or risk analysis
What We Offer
- A collaborative and dynamic work environment with minimal bureaucracy, allowing for quick decision-making and efficient workflows.
- Opportunities for professional growth and development.
- The chance to work on cutting-edge technologies and challenging projects.
- Competitive salary and benefits package.
- Flexibility in work hours and location.
Required languages
| English | B1 - Intermediate |
| Ukrainian | Native |
Published 12 June
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