Andrew Mills

Architected production-grade background job systems and AI agent workflows using TypeScript and Node.js. Integrated OpenAI and Anthropic APIs into long-running task pipelines and autonomous agent workflows. Built workflow automation tooling and code-first automation patterns as alternatives to traditional low-code platforms. Designed memory, tool-use, and multi-step execution capabilities for AI agents, optimizing workflow latency, API usage, and operational costs. Improved workflow reliability using structured execution patterns, robust error handling, and maintainable backend architecture.

Engineered webhook infrastructure and event-gateway ways supporting reliable delivery of high-volume API events targeting 99.9% delivery reliability. Designed retry strategies, failure handling, event routing, and asynchronous processing mechanisms. Built developer-facing tools and API orchestration layers using TypeScript and Node.js. Investigated webhook delivery failures, payload inconsistencies, signature validation issues, and integration errors. Supported debugging of event-driven architectures and integrated webhook systems into existing applications, improving integration reliability and debuggability through structured event processing and diagnostic tooling.

Contributed to software development and maintenance for enterprise communication and notification workflows associated with InfoCast. Developed and maintained application components supporting communication-related functionality. Worked with application services, APIs, and integrations connecting software components. Investigated software defects and supported testing and debugging to improve application stability. Assisted with maintenance and improvements to existing software functionality and collaborated with engineering teammates to troubleshoot application behavior and maintain code quality.