Freelance IT consulting, software development, AI training and digitalization for German SMEs.

ARUM Computer – Dominik Eller

Limburg-Weilburg (Operations) · Greven (business address, c/o Grosch Postflex #2284, Emsdettener Str. 10)New on Amplifa

20+ yearsSelf-employment as a freelancer

1Employee (freelance solo provider)

B.Sc. & M.Sc. Computer Science (THMQualification

from 110 EUR/hourPrice range

About ARUM Computer

ARUM Computer is the sole proprietorship of freelance software architect and IT consultant Dominik Eller, based in Limburg-Weilburg with an operations base for remote services throughout Germany. The company provides services in five core areas: IT consulting (software architecture, technology selection, due diligence), custom software development (web applications, backend systems with PHP and Laravel, REST APIs, database design, legacy code modernization), AI training and workshops for companies, IT-supported process optimization, and digitalization consulting (ERP, CRM, DMS, digital workflows). Dominik Eller holds a B.Sc. and M.Sc. in Computer Science from the Technical University of Central Hesse (THM) in Giessen, has over 20 years of freelance experience, and previously spent 6 years as a software developer at Simple Web-Solutions GmbH in the e-commerce sector. Target groups are SMEs, mid-sized companies and startups with roughly 5 to 500 employees in Germany. All services are delivered personally, in German and under German law; recommendations are vendor-independent and commission-free.

Site: Greven
Processes: IT consulting, Software architecture & technology selection, Software development (PHP, Laravel, web applications, REST APIs, databases), Legacy code modernization, AI training & workshops (ChatGPT, Copilot, prompt engineering), Process optimization & automation, Digitalization consulting (ERP, CRM, DMS), Technical due diligence
Materials: PHP 8.x with Laravel, REST APIs & Microservices, MySQL / MariaDB, ChatGPT, Copilot & AI Tools, Git / Linux
Employees: 1
Industries: SMEs & mid-sized companies, Startups & scale-ups, IT departments & CTOs, Administration & back office, Production & logistics, Sales & customer service

01
Initial consultation (free, approx. 30 minutes, remote)
02
Quote & clarification of scope
03
Analysis / requirements or needs analysis
04
Concept / recommended course of action
05
Implementation in iterations with regular updates
06
Handover, documentation & training

Service Areas & Technologies

PHP 8.x / Laravel

PHP 8.x with Laravel

Used for web applications, backend systems and maintainable custom software.

REST

REST APIs & Microservices

Interfaces for system-to-system communication and integration of third-party systems.

MySQL

MySQL / MariaDB

Database design and optimization as the foundation of custom systems.

KI-Tools

ChatGPT, Copilot & AI Tools

Used in training and workshops including prompt engineering and GDPR topics.

Git

Git / Linux

Version control, source code handover and server operation in the development process.

Locations

Limburg-Weilburg

Location/operations base, remote services throughout Germany

Greven

Business address (c/o Grosch Postflex #2284, Emsdettener Str. 10)

Services

**IT Consulting & Software Architecture**Consulting · SMEs & mid-sized companies

**Software Development & IT Security**PHP/Laravel · Web applications

**AI Training & Workshops**Training · Companies

**Digitalization & Vendor Independence**Consulting · ERP/CRM/DMS

Inside the production

AI network visualization (ARUM Computer guide)

Abstract depiction of an autonomous AI agent

Industries

SMEs & mid-sized companiesStartups & scale-upsIT departments & CTOsAdministration & back officeProduction & logisticsSales & customer serviceE-commerceHigher education consulting

Additional services

IT consultingSoftware architecture & technology selectionSoftware development (PHP, Laravel, web applications, REST APIs, databases)Legacy code modernizationAI training & workshops (ChatGPT, Copilot, prompt engineering)Process optimization & automationDigitalization consulting (ERP, CRM, DMS)Technical due diligenceCode reviewsCTO-as-a-Service

Background

Employed as a software developer at Simple Web-Solutions GmbH (Rossbach vor der Höhe) for 6 years, e-commerce development with a focus on Magento and full-stack web for international clients.
Self-employed with ARUM Computer for over 20 years as a freelancer; hundreds of projects for SMEs, mid-sized companies and startups in Germany (founding year not specified).