Ernő Nagy
Senior Software Engineer
Experience
Senior Software Engineer
xRealm
- Built a cross-platform AI-based mobile application featuring chat and image-generation capabilities with multiple subscription models.
- Architected an internal framework to integrate diverse AI models, led the mobile-app development team, and collaborated closely with the designer to deliver a polished UX.
Co-Founder / Senior Software Engineer
CypherBlk
- Reduced initial smartwatch diagnostic processing time from 9 to under 1.5 minutes by implementing and optimizing algorithms and UX for Android and Apple watches.
- Launched TimeShield, architecting desktop (Qt/C++), mobile (Java/Android), and watch-app integrations via RESTful APIs for secure erasure and diagnostics, securing 100K+ device erasures.
- Designed modular architecture and implemented concurrent, multithreaded programming with intuitive UI/UX.
Senior Software Engineer (Contractor)
LoxTop
- Implemented a Xamarin (C#) mobile app enabling seamless remote cabinet control.
- Built cross-platform mobile and desktop solutions using .NET, refactoring legacy features.
Senior Software Engineer (Contractor)
Securaze
- Led R&D for a modular software suite providing secure data erasure and device diagnostics across SSDs and mobile devices, supporting Windows, macOS, Linux, Android, and iOS.
- Developed web frontends, backends, desktop, and mobile applications using Qt/C++, Java, Objective-C, and QML to ensure a unified user experience.
Scrum Master
Chemaxon
- Introduced Scrum to two newly formed SRE teams, establishing agile ceremonies and workflows that enhanced productivity and cross-team collaboration.
- Facilitated sprint planning, daily stand-ups, retrospectives, and impediment removal to accelerate delivery cycles.
C++ Software Engineer & Scrum Master
Unify (Formerly Siemens Enterprise Communications)
- Ported a legacy VoIP embedded application from Windows to Linux, modernizing the C++ codebase and improving system reliability.
- As Scrum Master, increased team delivery velocity by embedding agile methodologies across cross-functional teams.
- Designed and implemented new features for a time-critical, multiline call-handling system, resolving memory corruption issues and enhancing performance.
Software Engineer
- Built a recommendation engine to analyze customer purchase patterns and suggest relevant products.
- Integrated the model with the live site, driving a 50% increase in sales within six months.
Industries Experience
See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.
Experienced in Information Technology (8.5 years), Telecommunication (4 years), Biotechnology (0.5 years), and Pharmaceutical (0.5 years).
Business Areas Experience
The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.
Experienced in Product Development (12 years), Information Technology (8 years), Research and Development (6 years), and Project Management (4.5 years).
Summary
Results-driven Software Engineer & Co-Founder with 10+ years of experience in cross-platform desktop, mobile, and web development. Proven ability to lead agile teams, architect modular frameworks, and integrate AI to deliver revenue-generating products on time. Passionate about leveraging cutting-edge technologies to create high-impact digital solutions and drive innovation in both AI and legacy modernization.
Skills
C++
C
Go
Java
Javascript (Es6+)
Python
C#
Sql
Qt
Boost
Node.js
Nestjs
React.js
React Native
Expo
Express
Tensorflow
Pytorch
Flask
Libimobiledevice
Openai Api
Grok Api
Langchain
Postgresql
Mongodb
Mysql/mariadb
Microsoft Sql Server
Sqlite
Git
Github
Gitlab
Docker
Docker Compose
Kubernetes
Jenkins
Github Actions
Gitlab Ci
Jira
Confluence
Cmake
Qmake
Visual Studio
Vs Code
Qt Creator
Android Studio
Xcode
Gcp
Azure
Aws
Firebase
Cursor
Claude
Perplexity
V0
Google Notebook
Google Ai Studio
N8n
Windows
Linux
Macos
Agile (Scrum & Kanban)
Test-driven Development
Continuous Integration & Deployment (Ci/cd)
Code Review & Pair Programming
Modular & Microservices Architecture
Security Best Practices (Static Analysis, Owasp)
Languages
Education
Óbuda University
Bachelor of Science in Military and Safety Engineering · Military and Safety Engineering · Budapest, Hungary
Certifications & licenses
CS50: Introduction to Computer Science
Harvard University
Certified Scrum Master
Sprint Consulting
Go: The Complete Developer’s Guide (Golang)
Udemy
Introduction to Computer Science and Programming
MITx (edX)
Software as a Service
BerkeleyX (edX)
Profile
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