Ian Hefflefinger

Software Engineer II

Design, modify, and build web-based applications used by military personnel to manage various aspects of the ICBM leg of the nuclear triad. Full stack development of applications, including React.sj, Python or Node.js, SQL, and corresponding unit tests.

Software Engineer

At OMSC, I primarily work on backend business logic and data processing. I write code to: integrate with third-party API’s for sending surveys, emails, and alerts; parse vendor data from various sources (csv, JSON, text, etc.) into our system; automate data aggregation based on cron or business events; display real-time data on our websites; fix bugs/enhance existing implementations; and solve problems that are typically outside the normal flow of development.

Software Engineer Intern

Researched, designed, developed, and tested a data-reconciliation module in a platform re-design using Java, Postgres, the Serverless Framework, and AWS. Participated in daily standups, retros, and grooming/planning meetings. Worked with other developers, QA, and stakeholders to ensure a quality and sound product was produced.

Software Developer Intern

Modified UI/UX, corrected bugs, implemented new features, and established a better SDLC for a cross-platform mobile application developed by previous interns. Helped design, develop, and test a web-based admin site for the mobile app.

Support Engineer (Systems Admin)

General Windows and Unix (RHEL) systems administration - managed users and computers. Automated tasks, when necessary, using various shell-scripting languages. Maintained knowledge-base by correcting or implementing new processes.

Technical Support Specialist

Helped non-technical users with a wide array of computer and network related tasks. Mostly: removed malware, created data backups, configured networks, and configured email clients.

Southern New Hampshire University

GPA: 3.82

This Website! (version 2)

After some cost and traffic analysis, I converted this site down to simple HTML and CSS to be deployed via AWS S3/CloudFront through Route 53. This resulted in significant and immediate cost savings compared to keeping a full time web server running on a Linux instance. With CloudFront acting as a CDN, the site also loads faster from various locations around the world. Better software solutions are sometimes simpler and cheaper than their traditional counterparts.

MongoDB Todo List

MongoDB Todo List is a Node.js/Express.js application with a MongoDB database. This is a single page application that lets the user add, view, update (cross out), and delete tasks that are stored in MongoDB. The functionality is similar to the SQL version listed below, but uses JQuery and MongoDB to simplify the setup/API calls and the update functionality is a little different. Unlike the previous version, this application is more aesthetically pleasing on the front-end (which is served by Express) and completes CRUD operations using fewer lines of code both on the front-end and back-end.

SQL Todo List

SQL Todo List is a Node.js/Express.js application with a MySQL database that interfaces with a vanilla HTML, CSS, and JavaScript front-end. It is a simple todo-list with full CRUD functionality. The application uses tables in HTML to reflect the table-based architecture of the database. This application does not serve the front-end, so it must be opened in the filesystem. You will also need to run the stored procedure (in the server folder) to setup the MySQL database and table. This application uses AJAX and async functions to complete requests.

Weather App

weatherApp is a Node.js/Express.js application that renders weather data to a vanilla js and Bootstrap webpage. The user can enter a search query (the name of a city) into a form and an API on the backend makes a call to a third-part API (https://api.openweathermap.org/) to retrieve the data. The data is then parsed for individual data relevant to the application and returned to the front-end where it is untimately rendered for the user to see.

This Website! (version 1)

This website is my professional portfolio. It is built using Node and Express.js on the backend with ejs for templating. The front portion of the site is built using simple HTML, CSS, and some Bootstrap. This website sits on top of Amazon Lightsail, due to it's low traffic and for the challenge of deploying the site to a different type of hosting service.

3D Scene With Texture and Controls

This 3-dimensional scene is a project I created in my computer graphics and visualization course using OpenGL and C++. The scene consists of several objects on a plane and allows full lighting, shading, and control over the "camera", so the user can move around the scene as an entity, similar to a player in a videogame.

Inventory Management System

Inventory Management System is a total overhaul of a really simple application that I initialy created in my first week of my first CS course. The re-designed application is written in Java 8 and utilizes JDBC to interface with a MySQL database. The modified app uses data validation to ensure data integrity and contains full CRUD functionality. The new app is terminal-based, but displays content in an easy to read format.

Steve's Mower Repair Services

Steve's Mower Repair Services is a full-stack (less a database) re-creation of a project I initially submitted in my web desgin course, early in my computer science program. The original application was written in HTML, CSS, and JavaScript. The modified version of the site (re-designed for a later course in my program) serves dynamic webpages from an Express.js app using ejs for templating and Bootstrap for formatting (and mobile responsiveness). The re-designed version of the app has a form with front and back-end data validation and proper routing/rendering to display success or error on the same page. The content was kept the same so the updated version of the site can be easily compared to the original version.

Technical Documentation Page

Technical Documentation Page was a responsive web design project that I created for FreeCodeCamp. It is strictly front-end and comprised of HTML, CSS, and JavaScript (including Bootstrap). The page contains technical information about JavaScript and a responsive navigation panel. The content for this project was pre-existing and the project itself serves as an example of my CSS and HTML skills.

see it live