I am Samuel Gfeller
Application developer, certified by Swiss Federal VET Diploma
A good program is one that users can handle with ease.
My main focus while creating applications is to make them as simple as only possible for the end user to use.
When working on the frontend, I put myself in the user’s shoes and try to make the elements that have to be interacted with, as intuitive as I can, free from any unnecessary thing.
Every thing that can be done by the backend of the application, is something that the user doesn’t have to do.
The more the repetitive tasks are taken over by the backend, the more people can focus on other things and free up time.
Frontend is the top layer of an application; the part you interact with.
Its job is to interact with the user and present him the right functionality when he needs it. It will then transmit the inputs to the business logic of the application.
The backend is the server-side part.
User inputs are being verified, actions triggered and communication is made with the database and other services.
Online portal to manage the process of selling meat and other farm products to customers.
Customer management & online order system
The administrator can add customers to the system, after which they can order products online. They can only order as long as there is availability.
POS system with barcode scanning
Every second month, customers come buy the products, which are scanned via barcode. A printable invoice is generated.
Invoice creation and management
After the sale, QR bills can be edited, sent via email as an attachment in one click and marked as paid to keep track.
Slim example project
Extensive yet lightweight Example Project with front- and backend covering basic functionality, implemented to be used as a template for larger-scaled applications. Includes:
- Template parser with translations (PHP-View)
- REST API endpoint (coming soon)
- PSR-12 Dependency injection container (PHP-DI)
- Custom error handler
- Fully automated tested (PHPUnit) with a multitude of examples
- And more… Logger (Monolog), Sessions and Flash, db access etc.
It will eventually grow into a usable application for non-profit organizations that help people and need to manage data about them as well as activity history.
Brokerstar is an extensive tool for insurance brokers to handle customers, policies, premiums, claims and more; Gestass and others are competitors.
I had migrated the content of the old Programm of the customer (like Gestass) into the BrokerStar database. Gestass and others have a very different ways of storing data. The task was basically grabbing the information at the right places, group them, change them and insert into the BrokerStar database.
Merge two databases
Two instances of BrokerStar had to be merged.
Data should not be duplicate, but a lot of times things were partly present in both databases with different primary keys. Only the non-existent ones should be inserted, so all the premiums, policies, invoices etc. had to be relinked with existing data from the target db.
Quizlet audio converter
This project was made to help out Patricia Ryter for her matura. She has experimented if it is possible to learn a language while sleeping.
The app extracts the audio files from a Quizlet learn set and converts them into one big file following the specified requirements
Since Quizlet doesn’t provide the audio in an API, I scrape the audio URL from the website. Audios are downloaded, re-encoded so that all have the same bitrate and then assembled following the specified requirements.
My name is Samuel Gfeller, and I’m 22 years old.
I finished my apprenticeship as computer scientist specialized in application development in July 2020, but there are plenty of things that I still want to learn.
I left my job to learn and specialize myself at a rate I couldn’t if I was employed. At the same time, I want to do a few freelance projects to have an income.
My goal is to have the knowledge to create an optimized and efficient project in every aspect from A to Z. I try to accomplish this with the example project.