Amir Hosseinsadati

Engineered crypto features based on business needs in a Scrum team of 10. Overhauled legacy code across 3 projects. Delivered knowledge-sharing sessions on unit testing best practices and mentored 2 new joiners via pair programming to improve onboarding. Built an AI-powered chatbot using OpenAI API for crypto payment gateway operations, reducing support tickets by 80%. Designed and implemented an observability strategy using OpenTelemetry for distributed tracing, centralized logging, and real-time metrics, reducing MTTD/MTTR by 40%. Designed performance-focused data storage solutions, reducing page analytical load time by 85%.

Analyzed and planned migration strategy from a monolithic architecture to microservices using the Strangler Fig pattern, enabling incremental service extraction while minimizing business disruption. Implemented comprehensive unit and integration tests for critical modules, reducing production defects by 30% and increasing developer confidence. Authored 10+ technical documents to manage cross-functional collaboration. Improved reliability by implementing observability with Prometheus and Sentry, reducing critical production incidents by 40%.

Counseled product managers, editorial teams, and business partners to understand software requirements. Developed a Buy Now Pay Later (BNPL) application enabling users to purchase products on loan and pay in installments, serving 100,000+ users using a Domain-Driven Design (DDD) approach. Built services to manage installment plans and loan processing, ensuring seamless integration with efficient handling of payment schedules and loan approvals. Collaborated with business and sales teams to design products based on client needs through 10+ bi-weekly sessions.