Adam Rasfeld
Full Stack Developer
Full Stack Software Engineer with extensive experience building scalable web and mobile applications, optimizing systems, and crafting high-performance, user-friendly interfaces. Skilled in React, Next.js, Node.js, Ruby on Rails, and API integrations. Experienced in mentoring, cross-team collaboration, and delivering production-ready solutions that balance performance, usability, and security.
Professional Experience
Seamless.AI
Developing Chrome extensions and web platforms for sales automation, focusing on user experience optimization and security compliance.
Technologies Used
Key Achievements
- •Designed and shipped dynamic, customizable datatables with column selection, filtering, sorting, row selection, and bulk actions
- •Built the "Connect" workflow, expanding the platform into campaign management with task sequencing and automated outreach
- •Migrated the extension from Manifest v2 to v3, ensuring compliance with updated Chrome security requirements
- •Fixed security vulnerabilities flagged by GitHub code scanning, strengthening the platform's security posture
- •Mentored a junior engineer and collaborated cross-team with backend and integrations groups
Upstart
Architected microservices migration and performance optimization for financial technology platform, implementing modern monitoring and feature management.
Technologies Used
Key Achievements
- •Developed reporting APIs with keyset pagination to improve query performance
- •Supported migration from monolithic Rails codebase to microservices using Kafka for event messaging
- •Analyzed database ownership boundaries to define data ownership across teams
- •Integrated monitoring and feature management tools (DataDog, LaunchDarkly) to maintain reliability
Divisions Maintenance Group
Developed cross-platform mobile and web applications with modern architecture patterns, focusing on user onboarding and inter-service communication.
Technologies Used
Key Achievements
- •Built a new technician onboarding experience for web (React) and mobile (React Native) apps
- •Developed a native module enabling gRPC requests on Android and iOS
- •Led the creation of a modular onboarding service/API, migrating service bus messaging system to gRPC and Kafka
- •Enhanced backend logging/telemetry with Datadog and Sentry and implemented unit/integration tests with Jest
Kroger Digital
Built scalable e-commerce applications and developer tooling for major retail platform, emphasizing code quality and accessibility standards.
Technologies Used
Key Achievements
- •Consolidated multiple account repositories into a Lerna monorepo, improving maintainability and deployment workflows
- •Drove unit and end-to-end test coverage above 90% using Jest and WebdriverIO
- •Redesigned authentication flows and improved accessibility following WCAG standards
- •Helped build a content management platform with Node.js + MongoDB
RoviSys
Developed enterprise automation systems and internal business applications, modernizing legacy systems with contemporary web technologies.
Technologies Used
Key Achievements
- •Designed and maintained internal business apps streamlining project management, staffing, and reporting
- •Modernized legacy systems by migrating WinForms → WPF, including engineering tools with AutoCAD SDK integration
- •Built platforms for resource forecasting, asset tracking, desk reservation, and employee surveys
- •Collaborated across teams to deliver scalable, reliable applications for internal and customer-facing use
Education
Miami University
Bachelor of Science degree in Computer Science from Miami University.