Iliyan Kalphov

• Delivered and maintained 8+ production business applications serving ~30 internal users across a 6-person Agile engineering team, spanning CRM, warehouse management, supplier portals, pricing tools, and internal tooling.
• Developed React and TypeScript applications supporting core business workflows, including a shared component library adopted across 4+ products.
• Designed and built an internal pricing tool that aggregates pricing data from multiple distributor sources for 10,000+ part numbers in a single view, replacing per-part manual research previously done across distributor websites and spreadsheets and saving analyst hours on every pricing review.
• Designed and implemented backend APIs in NestJS and PHP/Laravel, integrating three external distributor APIs to power the pricing aggregation and broader business workflows.
• Led the frontend migration of a major internal platform from Angular to React, growing the codebase from 43 to 218 components across 16 feature modules using domain-driven design.
• Designed and maintained 28 Grafana dashboards used across seven business departments, providing operational visibility and business intelligence for company-wide decision making.
• Automated infrastructure with Ansible-provisioned servers, Docker-based local environments, Bitbucket Pipelines and GitLab CI, and AWS Lambda serverless deployments behind CloudFront and API Gateway.
• Drove engineering quality through Vitest, Playwright (70+ end-to-end tests), and PHPUnit, supported by code review and domain-driven architecture patterns across services.

Technologies: React, TypeScript, NestJS, PHP/Laravel, PostgreSQL, MySQL, AWS (Lambda, S3, CloudFront, API Gateway), Docker, Ansible, Bitbucket Pipelines, GitLab CI, Grafana, Sentry, Vitest, Playwright, PHPUnit.