Isaac Steadman

E-Mail: isaac.dsteadman@gmail.com

Education
May 2020 Bachelor of Science in Electrical and Computer Engineering University of Texas at Austin
Experience
Sep 2023 - Present Software Engineer at Saronic Technologies in Austin, TX (On site)
Focused work on Saronic Echelon Command and Control (C2) software frontend and backend with additional work on boat software. Rewrote entire UI in TypeScript using React, styled-components, MapBox and Three.js to implement a modern designs. Implemented a feature across the stack from boat software to C2 backend to C2 frontend which allows the user to change which radios of the boat are active for a segment of the mission, with robust error handling and recovery. Design and implement dataflow in frontend to render hundreds of active assets on the map and allow the user to control all of them at once or individually. Wrote playwright integration tests running with our simulation environment to ensure the most of the stack from C2 frontend/backend to object tracking and sim boat mission execution works as expected. Rewrote the backend from JavaScript to Rust and SQLite to improve code explorability (go to definition), developer iteration time and runtime speed and memory usage (12MB for rust vs 48MB each for 4 js services). Utilize AWS services: EC2 - instances, VPCs, subnets, security groups and Amazon Load Balancer for separating services and routing traffic from clients to serve the frontend and API requests to the backend running in EC2 instances S3 - storing logs of data sent over the bus in the boat Automate workflows using Python scripts utilizing boto3 to call AWS APIs
Oct 2022 - Aug 2023 Backend Developer at Amazon/Whole Foods in Austin, TX (Hybrid)
Work on Whole Foods Merchandising/Selection and Team Member Shift Management Work with a team of 5 developers in 2 week sprints to create new services for merchandising and selection and maintain existing services supporting team member shift management and respond to alerts or outages when on call. Design and implement new services using Java for services involving planograms (shelf layout and arrangement in each store): Catalog export service to generate data imported to planogram design software Planogram import service to import planograms from design software Planogram compliance service to check real world planograms against the expected planogram Create and maintain unit tests using Junit5 and Mockito to ensure 90% branch/statement/function coverage of production code at all times Automate regular workflows and triaging of alerts using Python scripts utilizing boto3 to call AWS APIs Utilize AWS services like Lambda, Fargate/ECS, AppSync, API Gateway, S3, DynamoDB, SQS, SNS, CloudWatch CDK/CloudFormation
Jun 2021 - Sep 2022 Fullstack Developer at Spreetail in Austin, TX (Remote)
Worked on Spreetail vendor portal microservices Worked with a team of 5 developers in 2 week sprints to fix, update, and build new and existing microservices to replace functionality from the original monolithic application and responded to alerts or outages when on call Created unit tests using Jest and React Testing Library to ensure at least 85% branch/statement/function coverage of production code at all times Implemented REST API endpoints as Azure functions for actions like file uploading, account setting modification and sales/invoice data querying ...etc Sped up development and improved readability of new endpoints by consolidating common Okta authentication/authorization, body parsing and validation into middleware. Wrote database queries using Sequelize and Prisma ORMs Created a common report API across various report frontends (Excel, CSV, HTML tables) and created an implementation to output an Excel file to avoid column mismatches across report frontends. Migrated microfrontends from single-spa to use Webpack 5 Module Federation. Spearheaded integration testing and process automation by building demo integration tests in Cypress, Puppeteer and Playwright resulting in chosing Playwright for future integration testing.
Mar 2020 - Jun 2021Jun 2021 Fullstack Developer at LeanDNA in Austin, TX (Remote)
Worked on the LeanDNA ERP analytics application. Worked with a team of 10 developers in 1 week sprints to deliver bug fixes and features to users of a very data heavy analytics application. Implemented a REST API with authenticated with API keys that allow programs to interact with the application on users' behalf. This required writing SQL migration scripts, Java backend API endpoints and new SQL queries for the backend to access the database as well as a new API management UI written using TypeScript, React, Redux, and Material-UI Added new reports to provide customers with further insights into their item demand and inventory data. This required adding new Angular controllers in JavaScript in addition to creating new API endpoints and SQL queries to provide the report data to the frontend. Implemented several new workflows for users in the frontend in TypeScript and React using Material-UI and Redux requiring integrations with the old Angular frontend. I implemented requirements specified in Figma, Jira tickets, and Confluence pages into the application very few bugs making it into production.
Feb 2016 - May 2019    Aug 2019 - Mar 2020 Software Engineer at X-Microwave in Austin, TX
X-MW Controller (on Raspberry Pi 3 B) Created and developed software in Python 2.7 using the Kivy GUI library to provide a touchscreen interface to use GPIO pins to control various RF parts Replicated evaluation boards ($3000 boards) and software with the X-MW controller and X-MW blocks ($300 boards) Enabled the QA department to automate testing of physical parts with the controller software through an alternative TCP network interface As the main developer for the project I maintained consistent code style (PEP8), and large test coverage with unit tests and integration tests to enable easier transition to other developers at the company and greater confidence that code changes have not caused regressions Provided support to both external customers as well as users within X-Microwave Ported to Python 3.6, and a newer version of Kivy to take advantage of newer features and better support X-MW CASCADE (Layout and simple simulation web application written in JavaScript, LESS, and HTML) Added a lot of functionality to an existing Layout tool to allow customers and employees to quickly layout designs and gather simple performance characteristics Created a REST API server to provide data to the Layout tool from the internal database so that the tool is up to date with the newest parts Added advanced convenience features like the following: auto placement of walls, auto placement of GSGs and anchors, and auto placement of control boards required by RF boards Added unit tests (using Mocha and Chai) and integration tests (using Nightwatch browser automation library) to check for and avoid regressions Greatly increased sales of X-Microwave as well as X-Microwave quoting capacity to meet those sales by enabling customers to understand what parts they need for their applications. Used GitLab CI/CD to setup automated deployments whenever a merge to the master or staging branch is made Leveraged AWS CloudFront, S3, and EC2 to deploy the frontend and backend applications separately
May 2019 - Aug 2019 Research & Development Intern at TrendMicro TippingPoint in Austin, TX
Worked in C on TippingPoint's fork of OpenSSL to remove a copy operation to improve performance of SSL inspection Integrated ssl_read_zero_copy, and other buffer allocation functions that I created in OpenSSL, into the TippingPoint SSL inspection code path Learned a lot about OpenSSL library architecture and how to use GDB effectively to debug embedded applications Worked with a team of other interns on an internal web app tool in JavaScript, CSS and HTML using React.js and MongoDB. This tool helps developers search and find commits in the version control history in github as well as in the user story and bug tracker in Jira.
Skills
Programming/Markup/Styling Languages Web Frameworks and Libraries Other Desktop or native libraries C++ JavaScript/TypeScript Docker Mocha.js & Chai.js Boost C++ C# Python 2 & 3 Express.js NGINX OpenGL/WebGL CSS/LESS/...etc Rust Flask Node.js Kivy & TKinter HTML/SVG/XML Solidity Kubernetes React.js SDL1.2 & SDL2 Java SQL (MariaDB/MySQL) Material-UI Selenium/Nightwatch.js Unity (game engine)
Selected Independent Projects (to see more of my projects visit https://github.com/IsaacSteadman/)
https://github.com/IsaacSteadman/IsaacCompilerC++ Compiler and the StackVM Virtual Processor Architecture Wrote a Python 2.7 application to compile C++ Wrote the Lexer/Tokenizer, then the parser and context container, then the code generator Created StackVM, a virtual stack based 64-bit architecture for the compiler to target, to learn how processor instruction sets are architected, then later added support for virtual memory and interrupts to StackVM Thoroughly documented the ISA of StackVM with a collection of HTML documents Translated the entire project to Python 3.6 and made the code PEP8 Compliant Increased my knowledge and appreciation for the language of C, and C++ in developing this compiler Learned a lot about developing and debugging a large project Other Notes/Continued Work working on this project further by developing an operating system for StackVM and a C++ implementation of StackVM researched how to implement StackVM as an Out of Order, Pipelined, Register/Stack Renaming CPU in Verilog learned a lot about how to implement this for a stack based system since most literature is for register based ISAs
https://github.com/IsaacSteadman/MusicPlayer3Music Player Wrote a music player desktop application using Pygame, Python, and C++ that has features lacking from other music players Integrated my C++ Utility library to make multithreaded buffering available to Python to stream music over the internet Learned how to read MP3 metadata, learned how impactful network latency can be when performing file operations that depend on previous file operations Learned cryptographic principles to enable secure encrypted music streaming and remote file system access Wrote a GUI and widget library on top of pygame to ease development of this project and learn about how GUIs work
https://github.com/IsaacSteadman/PassManJsOnline Password Manager Wrote a web application entirely in TypeScript,LESS, and HTML using NodeJS, and ExpressJS Used PBKDF2 on the client side to derive 2 different keys using different salts: Authentication Key (sent to the server), and AES-256 Encryption Key (never sent to the server). Created a simple generic table interface so that arbitrary tables can be stored in the password vault and not just password. (I use it to store some todo lists) Added password generator that allows you to specify the number of bits of entropy and types of symbols you want. Deployed the application on my website under a subdomain with a wildcard ssl certificate using NGINX as a reverse proxy. Added "policy spaces" that can be used to limit account creation and account size to prevent denial of service attacks. The frontend is entirely a single page application and does not store any cookies.
https://github.com/IsaacSteadman/SudokuWebSudoku Helper Wrote a web application with in Python using Flask (server side) and in JavaScript/CSS/HTML using jQuery (client side) Added auto generation of hints/notes whenever the board changes as well as other convenience features to solve the puzzle faster in order practice more advanced puzzle solving Added support for undo and redo and created script to scrape websites for new sudoku puzzles Rewrote as an ExpressJS application using TypeScript and added even more helpers
https://github.com/IsaacSteadman/PygameLogicSim, and https://github.com/IsaacSteadman/PygameLogicSim2Logic Simulators Wrote a logic simulation and diagramming application with in Python using Pygame The first version does not have the concept of buses and the UI and simulation are highly integrated and hard to separate. The newer version adds buses that can link to multiple inputs and outputs simultaneously, and the simulation backend can be run without the GUI since it is decoupled. Used these logic simulators to help with my logic design class, and I learned a lot about proper Python code practices.