Ernő Nagy - Senior Software Engineer

Q: Where is Ernő based?

Ernő is based in Békéscsaba, Hungary and can operate in on-site , hybrid , and remote work models.

Q: What languages does Ernő speak?

Ernő speaks the following languages: Hungarian (Native), English (Advanced), German (Elementary) .

Q: How many years of experience does Ernő have?

Ernő has at least 13 years of experience. During this time, Ernő has worked in at least 5 different roles and for 6 different companies . The average length of individual experience is 2 years and 1 month . Note that Ernő may not have shared all experience and actually has more experience.

Q: What is Ernő's latest experience?

Ernő's most recent position is Senior Software Engineer at xRealm .

Q: What companies has Ernő worked for in recent years?

In recent years, Ernő has worked for xRealm , CypherBlk , LoxTop , and Securaze .

Q: Which industries is Ernő most experienced in?

Ernő is most experienced in industries like Information Technology , Telecommunication , and Biotechnology . Ernő also has some experience in Pharmaceutical .

Q: Which business areas is Ernő most experienced in?

Ernő is most experienced in business areas like Product Development , Information Technology , and Research and Development . Ernő also has some experience in Project Management .

Q: Which industries has Ernő worked in recently?

Ernő has recently worked in industries like Information Technology .

Q: Which business areas has Ernő worked in recently?

Ernő has recently worked in business areas like Product Development , Research and Development , and Information Technology .

Recommended expert

Békéscsaba, Hungary

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Experience

Dec 2023 - Present

2 years 6 months

Singapore

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.

Nov 2023 - Present

2 years 7 months

Granby, United States

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.

Jan 2022 - Apr 2023

1 year 4 months

Hungary

Remote

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.

Oct 2017 - Sep 2023

6 years

Austria

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.

May 2017 - Aug 2017

4 months

Hungary

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.

May 2013 - May 2017

4 years 1 month

Hungary

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.

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Telecommunication, Biotechnology, and Pharmaceutical.

Information Technology

Telecommunication

Biotechnology

Pharmaceutical

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Product Development, Information Technology, Research and Development, and Project Management.

Product Development

Information Technology

Research and Development

Project Management

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

Hungarian

Native

English

Advanced

German

Elementary

Education

Oct 2011 - Jun 2015

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)

Statistics

Experience

Total positions 7

Experience in Information Technology 8.5 y

Avg length 2 y 4 m

Longest experience 5 y 11 m

Global Experience

Countries worked in 4 (Hungary, Singapore, United States, Austria)

Primary country Hungary

Expertise

Recent roles Senior Software Engineer, Co-Founder / Senior Software Engineer, Senior Software Engineer (Contractor)

Main industries Information Technology, Telecommunication, Biotechnology

Main business areas Product Development, Information Technology, Research and Development

Qualifications

Highest degree Bachelor

Certifications earned 5

Profile

Created

June 2025

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Frequently asked questions

Have questions? Find more information here.

Where is Ernő based?

Ernő is based in Békéscsaba, Hungary and can operate in on-site, hybrid, and remote work models.

What languages does Ernő speak?

Ernő speaks the following languages: Hungarian (Native), English (Advanced), German (Elementary).

How many years of experience does Ernő have?

Ernő has at least 13 years of experience. During this time, Ernő has worked in at least 5 different roles and for 6 different companies. The average length of individual experience is 2 years and 1 month. Note that Ernő may not have shared all experience and actually has more experience.

What roles would Ernő be best suited for?

Based on recent experience, Ernő would be well-suited for roles such as: Senior Software Engineer, Co-Founder / Senior Software Engineer, Senior Software Engineer (Contractor).

What is Ernő's latest experience?

Ernő's most recent position is Senior Software Engineer at xRealm.

What companies has Ernő worked for in recent years?

In recent years, Ernő has worked for xRealm, CypherBlk, LoxTop, and Securaze.

Which industries is Ernő most experienced in?

Ernő is most experienced in industries like Information Technology, Telecommunication, and Biotechnology. Ernő also has some experience in Pharmaceutical.

Which business areas is Ernő most experienced in?

Ernő is most experienced in business areas like Product Development, Information Technology, and Research and Development. Ernő also has some experience in Project Management.

Which industries has Ernő worked in recently?

Ernő has recently worked in industries like Information Technology.

Which business areas has Ernő worked in recently?

Ernő has recently worked in business areas like Product Development, Research and Development, and Information Technology.

What is Ernő's education?

Ernő holds a Bachelor in Military and Safety Engineering from Óbuda University.

Does Ernő have any certificates?

Ernő has 5 certificates. Among them, these include: CS50: Introduction to Computer Science, Certified Scrum Master, and Go: The Complete Developer’s Guide (Golang).

What is the availability of Ernő?

Ernő is immediately available full-time for suitable projects.

What is the rate of Ernő?

Ernő's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.