Riccardo "ace" Hahn

// Software & Application Engineer

// Copy pasted by copy paste king 2012 - ©

Location Solothurn, Switzerland

Uptime

Skills

Software Development

functionality first, object orientated, optimized, agile programming front and back end JavaScript (NodeJS), C# (.NET), Lua, Python, HTML, CSS, SourcePawn Source-Control: Git, SVN, Github, Gitlab CI/CD: Github Actions, CRON, Webhooks

since 2014 ( )

Server Administration

Linux server administration, server side scripting, automation, maintaining, game and web server management game server administration, mainly csgo surf Containerization: Docker, Docker Compose, QEMU KVM

since 2016 ( )

Software & Application Engineering

PLC programming, electrical and software troubleshooting of customer issues, maintaining and programming in house and customer projects Codesys (IndraWorks), TIA Portal, STEP7, OPC UA, C# (.NET), JavaScript, Electron Siemens: S7, 840D, 840D SL, One, SCL, AWL, FUP, KOP Bosch: L85, XM42, ST, GRAPH

since 2021 ( )

Interests

Minimalistic Design

simple logos, banner, wallpapers

since 2012 ( )

Source Movement

mostly low tier surf maps

since 2015 ( )

About

👋 Hello!
I'm Riccardo "ace" Hahn, a self-taught programmer and designer from Germany, now based in Switzerland.

I primarily focus on backend, functional, and object-oriented programming, but I also dive into frontend development occasionally. My coding philosophy revolves around minimizing redundancy — I'd rather invest time automating tasks than repeating them manually.

Currently, I work as a software and application engineer, optimizing workflows by automating unnecessary steps while ensuring consistent standards for seamless integration.

I began programming at 12 and have been expanding my expertise ever since. In 2018, I ventured into Linux server administration and automation, always striving to optimize and modularize my code for future scalability.

Stack

Languages

Frameworks

Programs / DevOps

Operating Systems

// not in any particular order

Private Projects

otter share

A versatile file-sharing web application built with Express and Handlebars, with the main goal of seamless file transfers between desktop and mobile devices without the need for cables or permanent storage. All data is stored in the host server's memory and automatically cleared when all users leave the room.

Express FastDL

A simple and secure fastdl server written in NodeJS using Express that serves fastdl data to players connecting to the source engine game server, with the ability to only allow downloads from source game clients, without the need of a dedicated web server running on the game server.

kamUI

A web application written with Express and Handlebars, allows users to manage system services directly through a web interface. It integrates multiple API endpoints to monitor, start, stop, and restart services efficiently. With an intuitive design, the app provides an easy way for administrators to control system services without needing to use the command line, making service management quicker and more accessible.

Surftimer RPC GUI

A user-friendly desktop application developed with C# and the .NET Framework utilizing WinForms, enabling users to seamlessly integrate their current CS:GO SurfTimer metrics and status updates into their Discord presence. This application introduces a modular system that allows users to tailor the displayed information and its presentation to their preferences.

Surftimer

An open-source SurfTimer plugin for CS:GO, based on the former ckSurf, written in the C++-based programming language SourcePawn by AlliedModders. I modified the original repository, which was no longer actively maintained, to suit the preferences of the former gaming community z4lab. This is the current foundation of the active SurfTimer repository in use.

stepchain.js

A step chain implementation in NodeJS inspired by ST/SCL PLC programming. Written in NodeJS, without any dependencies, it aims to recreate the function of a step chain, commonly used for flow based programming in PLC controllers, within JavaScript. Based on intervals and timeouts, your code is repeated every "cycle" until a given value becomes true. As in PLC programming, you can define different steps and also jump around within them.

Dynamic Slots

A simple PaperMC server plugin, written in Java, that automatically adjusts the server's maximum player capacity to accommodate the current number of online players and a predefined slot gap.

GMOD TTT Automute

A Discord bot and API server written with NodeJS, Discord.js and Express, that complements the GMOD server plugin by receiving player information. The bot automatically moves players to a designated game channel upon joining and mutes them when they die in-game. They are then automatically unmuted upon respawning. Players can benefit from the improved audio quality of Discord while still retaining the original game mechanics.

GMOD TTT Automute

A simple GMOD server plugin written in plain lua that listens for ingame events like player death, spawn etc and sends them via http to a backend server to be passed on to a discord bot.

Status Tracker

A Discord bot written in NodeJS and Discord.js that is actively storing presence data from all users on my private Discord server. It utilizes MariaDB for storage and handling requests. The bot posts and edits Discord embeds to a given channel showing the last 4 presence changes for each user.

Status Tracker Web

A web application written in Express w/ Handlebars that is displaying and analyzing the data collected by the Status Tracker Discord bot. Featuring a global overview over all users, a discrete user page and also timeline with all recent events. The application also features a API that serves JSON data for given requests like user data or the timeline. This API can also be used to display stats on third party apps like Grafana.

GMOD TTT Stats

A simple GMOD server plugin written in plain lua that listens for ingame events like player death, spawn, damage etc and puts them into a MariaDB for further processing and displaying player specific stats and data.

GMOD TTT Stats Web

A web application written in NodeJS and plain HTML/JS that is displaying and calculating the data collected by the GMOD TTT Stats server plugin. You can see various graphs and stats for all or a selected user of your choice. The application also features a API that serves JSON data fro a given request like user data or last database entries.

Work Projects

IBN-Tools

A electron based multi-tool used for commissioning customer machines at work. Written in NodeJS, HTML5 and VanillaJS using Bootstrap for the visuals.

Teleservice Wrapper

A reverse engineered api wrapper to include the machine selector, where you can select customer machines for remote support, right from inside my multi-tool. It's utilizing the tools plugin system to include this inside the tool.

Project Explorer

A in HTML recoded plugin that is utilizing the tools plugin system to include the PLC Explorer inside the tool and displays a list of customer machines and their corresponding programming projects. You can download the project directly to your local project directory and check for changes from within the program.

Hour Tracker

A in HTML written plugin that is utilizing the tools plugin system to include a project specific hour tacker inside the tool and displays a list of working hours per day. You can define up to two work start and end times and therefore its automatically calculation the hours you worked this day. This plugin is designed to record the working times for clocking in at the customer's site or for field work where the user cannot use the time clock.

Messe Video Sync

A .NET Framework based console application that synchronizes a projector with the current state of one of our machines that is displayed at several trade shows around the world. Uses the web server of the PLC controller to retrieve the current status of certain variables to synchronize the machining CAD animation with the actual machining on the machine.

Tool Monitor

A .NET Framework based desktop application that uses WinForms for the visuals and displays the torque of a tool spindle/axis. You can create/manage multiple program preset, learn configured units and create limits for the generated torque curve.

PRVI

A .NET Framework based desktop application that uses WinForms for the visuals and is used to control, configure and diagnose our customer machines. It is separated into 4 different programs for various feature groups. Production, setup, configuration and diagnosis.