Nicholas Hillier
Staff Engineer | AI Systems | Distributed Architecture | Technical Leadership
Summary
Builder-first staff engineer with over 20 years delivering quality software solutions and enterprise-level architectural expertise. Currently building AI-powered healthcare systems, integrating LLMs into production workflows for clinical insights and automation. Deep background in distributed systems design, event-driven architectures, and cloud-native platforms across healthcare, media, retail, and broadcast. Led teams, owned architecture, and shipped at scale. Comfortable across the full stack and fluent in multiple languages and paradigms.
Experience
Platform engineer working directly with the CTO on a healthcare platform integrating microbiome testing with clinical care delivery.
- Architecting AI-powered features using Claude and LLM APIs for clinical insights, automated report generation, and intelligent patient interactions.
- Building production integrations with external lab systems and treatment protocols.
- Designing agent-driven workflows for order processing and patient data pipelines.
- Strengthening system observability and operational reliability.
- Shaping architectural decisions and mentoring team on AI-augmented development with Cursor.
Led architecture and development on the Clinical Platform team, owning systems for practitioner-pharmacy interactions, prescription workflows, and secure PHI/PII handling.
- Architected diagnostics platform from scratch — event-driven microservices enabling tens of thousands of at-home blood tests with Kit and Quest Diagnostics integration.
- Designed and built Benefits Verification and Prior Authorization services, accelerating insurance access for patients.
- Led migration from monolithic Django to distributed microservices architecture.
- Built observability stack with Datadog, strengthening incident response and platform reliability.
Led engineering efforts for Lightspeed's supplier network, streamlining vendor-client relationships and supply chain management.
- Architected microservices-based supplier network from the ground up.
- Built and led a high-performing engineering team.
- Built core services on GCP with Terraform for infrastructure automation.
- Developed RESTful APIs for cross-functional integrations.
Re-engineered core infrastructure for a global leader in stock photography.
- Led migration of primary metadata service from Perl/MySQL to Node.js/Java/Cassandra.
- Automated deployment pipelines using Terraform and Ansible for zero-downtime releases.
- Designed distributed systems for high-volume image metadata transactions.
- Developed disaster recovery procedures for Cassandra, reducing downtime from hours to minutes.
Lead programmer reporting directly to CTO, leading a team of three developers.
- Replaced SVN with Git and introduced dependency management across the company.
- Overhauled JavaScript pipeline with Node, npm, and webpack.
- Improved testability and introduced enhanced security for partners.
- Contributed to PCI compliance certification.
- Developed Pick and Pack (PnP) application for large retail outlets (Sobeys, Giant Eagle, Thrifty Foods).
- Designed two deployment architectures for different network topologies.
- Key contributor to architectural design and code quality.
- Led Integrations Group for iControl broadcast monitoring and control solution.
- Managed customization, deployment, and integration for clients including CBC, NBC, PBS, Verizon, CBS, and Fox.
- Responsible for code quality, team development, process development, and resource scheduling.
- Built distributed radio player core API used by most clients.
- Refactored UI, reducing code footprint by 40%.
- Implemented IoC and Dependency Injection across 50% of the codebase.
- Led Scrum adoption with daily standups, retrospectives, and 30+ iterations.
- Delivered web projects for CanWest Media Works, Michael Ignatieff MP, Syphr Communications.
- Full lifecycle: project management, design, development, and SEO.
Skills
Achievements
- ★Shipping AI-powered clinical features using Claude API in production at Evvy
- ★Co-authored research on obesity markers presented at the American Diabetes Association
- ★Architected event-driven diagnostics platform enabling tens of thousands of at-home blood tests
- ★Won Ro company-wide hackathon
- ★Built supplier network platform from ground up at Lightspeed, serving retail ecosystem
- ★Awarded ADCC Merit Award for Interactive Site