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 it as simple as only possible for the user. When working on the frontend I put myself in the user’s shoes and try to remove any unnecessary element.
Everything that users don’t have to do has to be done by the backend. The more it makes the repetitive job of humans the more we are heading to automation and efficiency.
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 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.
I truly believe that web development is the future. Accessible anywhere with any device without any installation, the advantages are multiple.
Online portal to manage the process of selling meat and other products to customers.
Customer management & Online order system
The administrator can add customers to the system after which they can order products online. They have displayed the availability.
POS system with barcode scanning
On the delivery date, customers come get their products which are scanned via barcode. A printable invoice is generated.
Invoice creation and management
After the sale bills can be managed and marked as paid
Slim API example
Exhaustive API project with basic functionality, implemented to use as a template for larger-scaled applications.
Fully automated tested (PHPUnit) with a multitude of examples
Following API and REST best practices
Integrated token based (JWT) authentication system
Brokerstar to Gestass migration
Brokerstar is an extensive tool for broker to handle customers, policies, premiums, claims and more; Gestass is an older competitor.
I migrated the content of Gestass into the Brokerstar database. Gestass has a completely different function implementation and formats which made the task of grasping the information at the right places and group them to insert into the Brokerstar database quite complex.
Merge two databases
Two instances of Brokerstar had to be merged. I couldn’t just insert the data adding 1 to the highest id. Data should not be duplicate. Some tables (like policy branches) were present in both databases, so I had to insert only the non-existent ones and relink all the premiums, policies, invoices etc. with existing branches.
Quizlet audio converter
This project was made to help out Patricia Ryter for her matura. She will experiment if it is possible to learn a language while sleeping.
The app extracts the audio files from a Quizlet learnset 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 20 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.