Mario Mohar-IT Consultant & Full-Stack Developer | AI-Assisted Development | QA Engineer and Test Manager
Check rate
Experience
Co-Founder and CTO
B2B SaaS Recruiting Platform
Complete build of a B2B SaaS platform for recruitment agencies
- Multi-source job aggregation via ATS APIs
- AI-assisted career page scraping
- Rule-based and AI-assisted matching
- Credit-based monetization model with Stripe integration
- Live in production since July 2026
Tech stack
- NestJS
- React
- PostgreSQL
- pgvector
- Claude AI
- Prisma
Developer
Freelancer
Several website and booking system projects for local businesses in gastronomy and education: custom development with calendar system, payment integration, admin dashboards, GDPR-compliant implementation. Examples: appointment booking with capacity control, hygiene management module with audit log and PDF export.
Developer, CTO and Founder
Business OS
Self-built all-in-one business tool for CRM, project management, time tracking, and automation, currently being actively rebuilt from a single-tenant to a multi-tenant SaaS architecture: generic role/permission concept, entitlement/bundle system for modular booking.
Tech stack: NestJS, Next.js, Prisma, MariaDB.
Head of IT and Operations Management
Sales Viking GmbH
Bringing together technology, processes, and scale - that is exactly what I focus on in my role, where I am responsible for IT infrastructure and operations in a growing technology company. In addition to further developing the internal product landscape, I automate business processes with n8n, Zapier, and AI-based solutions using Claude and OpenAI. A special focus is on stable systems, more efficient workflows, and the strategic integration of AI into operational processes.
Selected key achievements
- Introduced AI-assisted process automations and significantly reduced manual work steps
- Built scalable IT infrastructure and aligned it for further company growth
Founder and sole developer
Budget-Tracker / haushaltsplaner.at
Multi-user household budget app with free/premium model via Stripe, live in operation with real paying customers. Full responsibility for architecture, security hardening (auth, GDPR, IDOR fixes), billing integration, and VPS deployment. Over 340 commits, continuous development.
QA Test Engineer and Test Manager
QestIT GmbH
Concept and implementation of automated test case creation based on requirement tickets through AI integration. Reduced manual testing effort and faster test execution.
Team Lead Collaboration, Digitalization and Cloud
Constantia Services GmbH
Concept and implementation of several Power Platform solutions: HR automations with MS Power Automation, including onboarding and approval workflows, as well as a canteen ordering app with MS Power Apps for shift workers to order and track meals digitally. In addition, digitization of warehouse management from manual maintenance to automated reorder processes.
QA Engineer Test Automation
IoT40 Systems GmbH / LAM Research Corporation
In an agile Scrum environment, I designed and automated tests for Windows, Android, iOS, and web applications. My focus was on making quality visible early and building stable test processes for complex software landscapes.
Managing Director, Project Manager and Developer
TheMo.at
Founded and scaled an advertising agency with several full-time employees and 5 freelancers, including social media management for external contract partners.
IT Support 3rd Level
A1 Telekom Austria
Ticket handling in the B2B area at premium level
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Advertising, Telecommunication, Banking and Finance, Education, and Food and Beverage.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Operations, Marketing, Project Management, Customer Service, and Quality Assurance.
Summary
IT consultant and full-stack developer with a clear difference from classic freelancers: with AI-assisted development (Claude Code), I build in weeks what usually takes months the traditional way. Since 2026, co-founder and CTO of a B2B SaaS startup, while also running my own live SaaS product with real paying customers and taking on technical consulting projects for digitalization, automation, and test management. I combine a strong technical foundation (full-stack development, cloud, QA/test automation) with an entrepreneurial mindset from years as an agency founder.
Skills
Full-Stack Development (Ai-Assisted): Web Apps, Saas Products, Custom Software From Architecture To Deployment. Backend With Nestjs, Node, Python, And Flask. Frontend With React, Next.Js, And Typescript. Databases With Postgresql And Prisma. With Vibecoding Using Claude Code, I Deliver Much Faster Than With Classic Development.
Automation And Ai Integration: Workflow Automation With N8n And Ms Power Automation, Low-Code Apps With Ms Power Apps, Ai Agents With Claude And Openai, Process Automation That Removes Manual Work, Both Internally And Externally.
Test Management And Qa Setup: Planning And Building Automated Test Infrastructures With Robotframework, Selenium, And Appium, Ai-Assisted Test Case Generation, Istqb Certified Including Ai Testing Specialist.
It And Digitalization Consulting: From Analysis Of The Current State To Technology Selection And Implementation. Experience With Legacy-To-Cloud Migrations, Process Digitalization, And It Infrastructure Setup.
Backend: Nestjs, Node.Js, Python, Flask, Django
Frontend: React, Next.Js, Typescript, Javascript, Vite, Tailwind Css
Database: Postgresql Including Pgvector, Prisma, Mariadb
Ai And Automation: Claude Code, Claude Api, Openai, N8n, Dify, Vibecoding Workflow
Infrastructure And Deployment: Docker, Vps/Plesk, Stripe Billing And Payments, Ci/Cd, Aws, Azure
Testing And Qa: Robotframework, Selenium, Appium, Test Automation For Web, Mobile, And Desktop
Tools: Jira, Confluence, Ms Power Automation, Ms Power Apps, Sharepoint Online
Languages
Education
Universidad Isabel I
MBA · MBA in AI for Business · Barcelona, Spain · 9.7/10
MBA & Master in AI for Business
Certifications & licenses
DEKRA IT Expert Witness
MS Power Expert
Microsoft
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
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Calculated based on our freelancers’ daily rates as of 21 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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