$ whoami

Joseph Finfrock

_

$ cat about.md

about.md

Software Development Engineer at Amazon, building full-stack assessment software that serves millions of candidates and handles 4+ billion requests per year. Every applicant to a corporate role at Amazon goes through this system.

I specialize in React, TypeScript, and AWS serverless architectures. I'm passionate about developer experience, system reliability, and building tools that make complex processes simple.

Graduated from the University of Central Florida with a B.S. in Computer Science.

$ cat experience.json

experience.json
Amazon Software Development Engineer
August 2024 – Present
  • Developed full-stack assessment software serving millions of candidates and handling 4+ billion requests/year
  • Tripled developer velocity by migrating a monolithic Ruby on Rails / Angular / React package into a React microfrontend with a thin backend, reducing cross-team dependencies from 4 to 1
  • Built dashboards for research scientists and business leaders to evaluate assessment quality, and recruiter interfaces for advancing candidates
  • Resolved a production incident blocking 50,000+ candidates from taking assessments
  • Owned the full software lifecycle: legacy services, new features, deployments, and testing (unit, canary, E2E, load)
  • Operated serverless systems on AWS (Lambda, Fargate, DynamoDB, Step Functions, SQS, S3) including on-call duty
Amazon Software Development Engineer Intern
Summer 2023
  • Implemented an automatic assessment preview feature in React and TypeScript, saving 1–2 days of work per assessment previewed
Finfrock DMC Software Intern
Summer 2021
  • Developed XceleRAYtor — a program to improve manufacturing efficiency by simplifying design documents and laser projections
  • Built features to visually represent daily manufacturing schedules
  • Implemented instant unit conversion on 3D models and auto-generation of software help files
  • Worked in C#, Git, Blender, and Visual Studio

$ ls projects/

>

React Microfrontend Migration

Migrated a monolithic assessment platform (Ruby on Rails / Angular / React) into a modern React microfrontend architecture, tripling developer velocity and reducing cross-team dependencies from 4 to 1.

React TypeScript Microfrontends
>

Assessment Analytics Dashboards

Built business leader-facing dashboards for research scientists and executives to evaluate assessment quality, plus recruiter interfaces for candidate pipeline management.

React TypeScript Data Viz
>

Serverless Assessment Pipeline

Operated serverless architecture handling 4B+ requests/year using Lambda, Fargate, DynamoDB, Step Functions, SQS, and S3. Includes on-call duty and incident mitigation.

AWS Lambda DynamoDB Step Functions
>

XceleRAYtor

Manufacturing tool that improves efficiency by simplifying design documents and laser projections. Features include 3D model visualization, instant unit conversion, and auto-generated help files.

C# Blender 3D

$ cat skills.yaml

skills.yaml

languages:

TypeScript Java Python C/C++ C#

frontend:

React TypeScript Microfrontends

cloud:

Lambda Fargate DynamoDB Step Functions SQS S3 CDK

practices:

Full-Stack Dev On-Call / Incident Response CI/CD Testing (Unit, E2E, Load)

$ ./contact.sh

contact.sh

$ echo "Let's connect."

I'm always open to interesting conversations and opportunities.