Employed

Hanna Sage,
_

7+ years building scalable systems and leading teams. Currently expanding AI/ML expertise.

7+ years experience

Tenure

7+ yr

Focus

Forward-deployed

Status

Employed

Featured project

Bowerloom

Portable Agent Workflows

A toolkit for defining agent roles, skills, handoffs, and review points in portable project files. Exact approval, drift checks, and revision recovery support governed setup workflows across agent environments.

Agent EvaluationAgent GovernanceAI Tool IntegrationContext EngineeringHuman-in-the-loop AIMulti-agent Workflow DesignNode.jsReactReact Three FiberThree.jsTypeScriptVite

About

Background

I'm a software engineer with a passion for building solutions that bridge complex technical challenges with user-friendly experiences. With over 7 years of full-stack development experience, I specialize in cloud-based application modernization and AI-integrated systems. My background uniquely combines engineering expertise with business analysis and media production, giving me a well-rounded perspective on problem-solving.

Currently expanding my machine learning expertise and diving deeper into AI integration, I'm passionate about leveraging technology to create meaningful impact. When I'm not coding, you'll find me exploring my 200+ vinyl collection (check out my top tracks in the nav!), hiking with my Australian Cattle Dog Miki, cooking, making music, or rolling dice in tabletop RPG campaigns.

Highlights

7+ years full-stack development experience
Cloud-based application modernization
AI-integrated systems expertise
Team leadership and mentoring
Engineering + Business + Media background

Stack

Skills & Technologies

Comprehensive toolkit for modern software development

AI Engineering & Data

16 items

Agent EvaluationAgent GovernanceAI Tool IntegrationContext EngineeringConversational AIHugging Face TransformersHuman-in-the-loop AILangChainLlamaIndexModel Context ProtocolMulti-agent Workflow DesignNumPyOpenAI AgentsOpenAI APIPandasRecommendation Systems

Backend & Infrastructure

14 items

AWSAzureAzure FunctionsCI/CDCraft CMSDockerGCPGitHub ActionsKubernetesPocketBasePostgreSQLSanitySupabaseTerraform

Languages & Frameworks

13 items

Express.jsGatsbyGoGraphQLJavaJavaScriptKotlinNext.jsNode.jsPythonReactSQLTypeScript

Tools & Libraries

9 items

@dnd-kitJestReact Testing LibraryReact Three FiberRechartsStorybookThree.jsViteZustand

Leadership & Soft Skills

4 items

Agile MethodologyCreative Problem SolvingCross-functional CommunicationTeam Leadership & Mentoring

Solution Engineering

8 items

AccessibilityBusiness AnalysisContent ModelingData VisualizationDesign SystemsOffline-first ArchitectureScenario ModelingSoftware Testing

Work

Professional Experience

Product delivery across public-sector and health tech

Dec 2022 - Present
Software Engineer II
@ Fearless
- Led design and implementation of scalable React components for OneMAC, enabling digital submission workflows across Medicaid/Medicare systems
- Contributed to the Smithsonian's Searchable Museum platform, enhancing scalability and accessibility of digital exhibits
- Translated federal policy into compliant, accessible UI workflows
- Optimized agile delivery cycles and drove CI/CD process improvements for better quality assurance
- Mentored junior engineers across development teams
Selected deliveries
MACPRO
CMS
Medicaid and Medicare program operations tooling for the Centers for Medicare & Medicaid Services—accessible React front ends and delivery practices on work led by Fearless, aligned with federal policy and state partner needs.
AccessibilityCI/CDReactSoftware TestingTypeScript
View repository
Searchable Museum
Smithsonian Institution
Public discovery experience across Smithsonian collections—performance, content modeling, and inclusive UX so visitors can search and explore millions of catalogued objects and narratives.
AccessibilityAWSContent ModelingCraft CMSGatsbyOpenAI APIReact
Visit project
Aug 2021 - Dec 2022
Software Engineer I
@ Fearless
- Re-architected ReportStream frontend to React and migrated codebase to TypeScript, improving reliability and scalability
- Built API integrations using Kotlin and Azure Functions to support federal public health data systems
- Implemented test-driven development with Jest and RTL
- Streamlined onboarding of new engineers
- Played a key role in agile ceremonies and collaborated with stakeholders on roadmap alignment
Selected deliveries
ReportStream
CDC
CDC-led data hub that routes electronic lab reporting (ELR) and other public health messages between health departments, labs, and federal systems—Fearless contributes engineering to the open, standards-based platform.
AzureAzure FunctionsKotlinReactSoftware TestingTypeScript
View repository
Sep 2020 - Jul 2021
Technical Business Analyst
@ Advanced Metrics
- Served as key liaison for the Healthy Pathways platform, converting clinical goals into software requirements
- Directed UAT cycles, created training programs, and documented system functionality for stakeholders
- Improved delivery efficiency through structured agile practices and effective communication between teams
Nov 2019 - Aug 2020
Independent Software Engineer / Open Source Contributor
@ Contract Roles & Contributions
- Developed lightweight applications for startups and nonprofits with a focus on accessibility and maintainability
- Contributed to HospitalRun's open-source EHR platform as a frontend engineer, enhancing core React functionality
- Delivered rapid MVPs, authored technical documentation, and managed short development cycles for multiple clients
- Collaborated in global developer communities to solve real-world challenges in healthcare access

Research

Analyses

Long-form research and business-analysis briefs

Featured analysis

Restructuring American Soccer

Business Analysis Brief · Sage Advice LLC

A sourced 30-year restructuring analysis of the US soccer pyramid: franchise economics, pay-to-play youth, five international case studies, and a phased open-pyramid roadmap with 85 cited sources.

Business AnalysisData VisualizationReactRecharts

Projects

Applications

Personal projects and Sage Advice LLC endeavors

Featured project

Bowerloom

Portable Agent Workflows

Agent EvaluationAgent GovernanceAI Tool IntegrationContext EngineeringHuman-in-the-loop AIMulti-agent Workflow DesignNode.jsReactReact Three FiberThree.jsTypeScriptVite

Project

Projection

Financial Scenario Planner

An offline-first personal finance scenario planner. Compare cash, debt balances, investments, and net worth across alternate plans with a deterministic month-step simulation engine. Free and open source.

Data VisualizationOffline-first ArchitecturePocketBaseReactScenario ModelingSoftware TestingTypeScript

Project

Greenhouse

Shared Blog Content Layer

A reusable blog content library with local Markdown sources, validated metadata, and explicit site permissions. A shared content-source contract keeps the reader separate from each site, with a Sanity adapter in development.

Content ModelingNode.jsSanitySoftware TestingTypeScript

Project

projection-ui

React Component Library

A React component library with shared design tokens, theme presets, accessible controls, and composable glass, gradient, and lighting styles. Published to npm as @hannasage/projection-ui.

AccessibilityDesign SystemsReactSoftware TestingStorybookTypeScript

Project

Music Central

Music Catalog & Discovery

This is my personal vinyl collection, managed by AI to keep track of albums, artists, and release dates. Browse through the catalog to explore what's on the shelves and discover new music.

AI Tool IntegrationContext EngineeringConversational AINext.jsRecommendation SystemsSupabaseTypeScript

Project

Spotify Agent

Terminal-based Spotify AI Buddy

A terminal-based Spotify assistant with specialized playback and lookup agents, natural-language commands, MCP tool integration, and trace-based evaluation.

Agent EvaluationAI Tool IntegrationContext EngineeringConversational AIModel Context ProtocolMulti-agent Workflow DesignNode.jsTypeScript

Contact