Quinton Quartel
Verified Expert in Engineering
Software Engineer and Developer
Detroit Metro Area, United States
Toptal member since August 3, 2026
Across technology and healthcare, Quinton is a senior AI engineer with over 20 years of experience building production systems for clients such as Monarch GTM, Xpanse, and Premera Blue Cross. His expertise spans agentic coding, test automation, and cloud-native platforms, where he thrives in hands-on engineering environments. Quinton re-engineered cloud services for AWS deployment and led teams of up to 75 engineers while at Premera Blue Cross.
Portfolio
Experience
- CI/CD Pipelines - 11 years
- Java - 7 years
- Python - 4 years
- TypeScript - 2 years
- Claude Code - 2 years
- AI/ML Workloads - 2 years
- Claude API - 1 year
- AI Agents - 1 year
Preferred Environment
Google Cloud, Azure, Python, Node.js, Anthropic, OpenAI, Claude Code, Amazon Bedrock AgentCore, SQL
The most amazing...
...automation platform I've built processed millions of documents using agentic AI and shipped two greenfield products from inception to production.
Work Experience
Consultant and Software Engineer
Cron Technologies
- Provided independent consulting in software engineering, technical coaching, business process, and digital transformation.
- Delivered hands-on work across multiple languages and stacks, with an emphasis on automated testing and continuous delivery.
- Handled product management for greenfield applications that were successfully deployed to production through incremental delivery.
Principal AI Engineer
Monarch GTM
- Harnessed agentic AI to build production code and AI agents.
- Designed and shipped AI-driven product features, using AI as a force multiplier across the full development cycle.
- Worked on a multi-agent application with web and Slack chat integration to help small to medium-sized businesses with go-to-market.
Principal Software Engineer
Xpanse
- Built production systems hands-on in Python, Java, and JavaScript on an asynchronous, event-driven microservices platform processing millions of documents.
- Independently developed a production Java library end-to-end using agentic AI (Claude Code), enabling continued progress during limited engineering capacity and integrating cleanly with core products.
- Delivered two greenfield products from inception to production, including an AI/ML component that extracted structured information from documents.
- Prototyped and shipped AI-driven automation using AI for rule evaluation and exploring agentic AI in place of manual review.
- Re-engineered services for cloud deployment on AWS (ECS, Lambda) using serverless and containerized patterns.
- Applied TDD, CI/CD, and a minimal-process workflow to ship reliable, well-tested code ahead of schedule.
- Coordinated work across a distributed/offshore team while remaining hands-on in the codebase.
Principal Software Engineer
LiminalArc
- Developed high-quality software using Extreme Programming principles.
- Coached engineering teams on TDD, pair programming, and continuous integration and delivery.
- Led by example with hands-on coding. Worked predominantly on a mobile application in Flutter/Dart.
Technical Product Manager and Test Engineer
Sono Bello
- Contributed hands-on technical work, including functional and black-box test automation.
- Collaborated with engineering on a .NET back end and a React front end for a full CRM rewrite.
- Handled technical product management of the entire project from planning to continuous releases.
Senior Consultant, Software Engineering and Product
Slalom
- Worked hands-on in engineering alongside the team, delivering client solutions.
- Delivered wireless data solutions for rural homes as the primary project.
- Handled technical product management for a greenfield product, from planning through incremental releases. Aligned releases with targeted marketing of strategic geographic/demographic target users.
Engineering Manager
Premera Blue Cross
- Led development of products from conception to production across mobile, web, and back-end services (around 75 engineers). Focused on back-end microservices.
- Drove cloud enablement to Azure and modernized delivery processes.
- Invented a scalable flow-based development method and the discovery tree to visualize, plan, and track work, directly improving throughput across 60 engineers.
Experience
Go-to-market Intelligence Platform
The user, when posed with a recommendation, could accept it, and the platform would create, implement, and deploy new agents. The platform also provided a way to view and edit running agents in the administration area, as well as user management and tool connectivity.
Mobile App for Flight Instructor Training
Document Process and QA Platform (AI Enhanced)
Certifications
Foundations of AI Security
Zenity
Claude with the Anthropic API
Anthropic
Claude in Amazon Bedrock
Anthropic
Claude with Google Cloud’s Vertex AI
Anthropic
Introduction to Model Context Protocol (MCP)
Anthropic
Claude Code in Action
Anthropic
Skills
Libraries/APIs
React, Claude API, Node.js, REST APIs, OpenAI API, API Development, OpenAPI
Tools
Claude Code, Claude, GitHub, Prisma, Pytest, Codex, Salesforce Sales Cloud, Slack, Terraform
Languages
Python, Java, JavaScript, TypeScript, SQL, Ruby, CSS, HTML, Python 3, Dart
Frameworks
Next.js, Agentic Frameworks, Tailwind CSS, Ruby on Rails 6, Ruby on Rails (RoR), Spring Boot, Django, .NET, Flutter
Paradigms
Test-driven Development (TDD), Model Context Protocol (MCP), Refactoring, Database Design, Unit Testing, Microservices, Management, Testing, Object-oriented Design (OOD), Object-oriented Programming (OOP), Role-based Access Control (RBAC), Event-driven Architecture, DevOps, HIPAA Compliance, Automation
Platforms
Docker, Google Cloud Platform (GCP), Amazon Web Services (AWS), AWS IoT, AWS Lambda, Azure, Langfuse, Vercel, Mobile, Vertex AI, Salesforce
Storage
Databases, PostgreSQL, Relational Databases, JSON, Amazon S3 (AWS S3), Google Cloud, MySQL
Industry Expertise
Insurance, Healthcare
Other
AI/ML Workloads, CI/CD Pipelines, AI Agents, Full-stack Development, Full-stack, API Integration, SaaS, Workflow Automation, Data Modeling, APIs, Agentic AI, Agentic AI Systems, Agentic Workflow Design, Back-end, Artificial Intelligence (AI), Architecture, Retrieval-augmented Generation (RAG), Large Language Models (LLMs), AI Agent Orchestration, Technical Leadership, Software Architecture, Multi-agent Systems, Consulting, Conversational AI, Training, AI Engineering, Generative Artificial Intelligence (GenAI), WebSockets, AI-assisted Development, Webhooks, SOAP, Integrations, ECS, Serverless, Amazon Bedrock AgentCore, RAG Systems, OpenAI, Gemini, Multi-tenant SaaS, OAuth, Multi-tenant Architecture, Mortgages, FastAPI, SOC 2, Event-driven Systems, AI Integration, Vite, Infrastructure, Vector Databases, LLM Integration, Supabase, AI Architecture, Prompt Engineering, Authentication, Agentic RAG Systems, Product Management, OpenTelemetry, Software, Anthropic, Security, AI Marketing, Identity & Access Management (IAM), Front-end
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