Sergei Kuznetsov

Delivered a comprehensive fraud detection platform ahead of schedule monitoring transactions and user behavior across multiple touchpoints to protect customers from fraud, achieving more than 90% code coverage

Implemented JPY currency support for Global Currency Accounts including SWIFT file parsing for virtual accounts

Built proxy API for CDD system integrating with KYC/AML compliance platform, implementing rate limit handling, and migrating monitoring infrastructure to Datadog

Migrated multiple legacy platforms to Okta authentication improving security and centralized client identity administration in CRM

Architected server-side search engine using Elasticsearch to replace slow frontend implementation, significantly improving query performance for product catalog

Established comprehensive monitoring and logging infrastructure using Prometheus, Grafana, and Graylog to enable proactive issue detection and system observability

Implemented monitoring system with Prometheus and Grafana in existing platform, improving incident detection and response times

Architected and built new microservices platform from scratch with integrated monitoring infrastructure, enabling rapid feature experimentation as company pivoted to enterprise collaboration analytics

Built a scalable data integration platform supporting 10+ sources (GSuite, Office365, Slack, GitHub, Gmail, Outlook, etc.), enabling product to serve hundreds of customers analyzing collaboration data for companies from small teams to 200,000+ employee enterprises

Integrated ML models to analyze historical collaboration data and generate insights including employee engagement, burnout detection, informal leadership, and more

Led engineering team as Head of R&D during leadership transition, growing the team from 3 to 10+ engineers and improving development processes including ticketing, documentation, and code reviews

Established technical standards and ensured system consistency across engineering teams as Software Architect during the scale-up from startup to enterprise SaaS platform

Implemented CI/CD pipelines using GitHub Actions and scripting, automating deployment processes and significantly reducing manual operations overhead

Architected the entire SaaS platform as a solo engineer, delivering a real-time content generation service that achieved sub-second response times at high request volumes

Developed the admin panel, reporting system, and CI/CD infrastructure to create a cohesive environment for email marketers to deliver dynamic content without developer involvement

Mentored developers to ensure effective knowledge transfer and long-term platform continuity

Built in-house engineering team from scratch to transition platform ownership from external vendor to internal development

Led Trading Desk development including new reporting platform, enabling multi-platform programmatic advertising campaigns

Maintained high-load Data Management Platform (DMP) handling over 10,000 requests per second with 10ms response times, ensuring platform stability under pressure

Implemented Aerospike UDF modules using Lua to significantly reduce database load

Built an Audience Analytics tool from scratch that reduced complex calculation times from up to 30 minutes to under one second

Developed segmentation tools enabling real-time visitor tagging and audience targeting

Worked on multiple projects ranging from maintaining legacy systems to building new platforms from scratch

Optimized Real-Time Bidding (RTB) trading desk platform by resolving critical performance bottlenecks to enable platform scalability

Established CI/CD infrastructure for .NET projects across development workflows to standardize and speed up delivery

Grew into technical leadership role managing 5-person development team and mentoring junior engineers