Georgios Stylianou, Developer in Heerlen, Netherlands
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Georgios Stylianou

Verified Expert  in Engineering

Software Developer

Heerlen, Netherlands

Toptal member since May 31, 2024

Bio

Georgios is a result-oriented professional with extensive experience in ICT. With a proven track record in delivering high-quality results and achieving objectives across various domains, he uses his strong analytical skills and proactive, solution-oriented approach to tackle challenges effectively. Georgios has outstanding communication skills and can work effectively in teams or independently.

Portfolio

Consulting
Python, Git
Eargo
C#.NET, Azure, Microsoft Intune, TeamViewer, APIs...
Accenture
Java, JavaScript, TypeScript, Amazon Web Services (AWS), Azure, SQL, JSON...

Experience

  • SQL - 10 years
  • C++ - 10 years
  • Java - 5 years
  • Azure - 4 years
  • C#.NET - 4 years
  • Node.js - 3 years
  • NestJS - 2 years
  • Amazon Web Services (AWS) - 2 years

Availability

Full-time

Preferred Environment

C#.NET, Java, TypeScript, JavaScript, C++, Azure, Amazon Web Services (AWS), SQL, NestJS, Node.js

The most amazing...

...thing I've worked on is a blockchain system that connects several real entities to perform pension fund value transfers.

Work Experience

Senior Consultant

2024 - PRESENT
Consulting
  • Developed a tool that handles the migration of a highly complex system using an obsolete SCM to Git SCM.
  • Coached junior developers to increase their understanding and productivity.
  • Implemented automated unit and integration tests for quality assurance.
Technologies: Python, Git

Senior Staff Software Engineer

2021 - 2023
Eargo
  • Managed the scale-up, launch, maintenance, and support of the Windows hearing screener and supporting software to 1,500 stores in the US.
  • Collaborated with the CTO and remote cross-functional teams, coordinating efforts to deliver three projects on time and within budget.
  • Increased productivity by 30% and enhanced product quality by 50% by reorganizing and training the development team. This also improved collaboration, project delivery times, and overall product outcomes.
Technologies: C#.NET, Azure, Microsoft Intune, TeamViewer, APIs, Windows Presentation Foundation (WPF)

Associate Manager, Technology Architecture Delivery

2017 - 2021
Accenture
  • Consulted in different roles for large companies in the energy, pharma, and financial services sectors.
  • Built and managed international teams across five countries.
  • Executed several software projects in the finance, energy, and pharmaceutical domains.
Technologies: Java, JavaScript, TypeScript, Amazon Web Services (AWS), Azure, SQL, JSON, C#.NET, Blockchain, Blockchain Platforms

Lead Developer & Solutions Architect

2015 - 2017
Freelance Clients
  • Built an iOS app where users can view the lowest prices in their location and subscribe to receive real-time price alerts for specific fuels and gas stations.
  • Developed an iOS app that provides information about tourist attractions.
  • Created an iOS app for a financial company that provides information about events.
Technologies: Objective-C, MySQL, PHP

CEO

2008 - 2015
VI Scientific
  • Built an app that performs real-time computer vision for the visually impaired. The app can identify in real-time the presence of light in a room, the color of clothes, and the Euro and US dollar value.
  • Developed an indoor navigation application prototype for visually impaired persons, which generates and merges routes and provides instructions for a given route.
  • Patented the technology under the name "Vision assistance using mobile telephone[s]."
Technologies: C++

Experience

Windows Hearing Screener

I managed the end-to-end configuration, scale-up, roll-out, and operations of the Windows hearing screener and kiosk to 1,500 stores across the United States, ensuring seamless deployment and optimal performance.

I oversaw all phases of the software engineering cycle for our products and managed the supporting Azure cloud infrastructure. I also led the design and development of supplemental services, including the automation of headset calibration, the operations dashboard, device status service, and data analytics. I utilized MDM (mobile device management) and TeamViewer to remotely set up, manage, and support the devices used in the field, ensuring smooth operations and minimizing downtime.

During this project, I collaborated with multiple teams, including those in marketing, legal, sales force coordination, and microservices development.

Distributed Event Streaming Platform

I built, connected, and deployed consumer, producer, and streaming connectors. I also developed an ETL pipeline capable of extracting data from a data lake, processing it via lambda functions, and relaying it to a streaming platform I configured.

Microservice

I implemented a microservice that integrates an external system with internal systems. The microservice is deployed via CI/CD in a Kubernetes cluster and is accessible via Azure API Gateway. It is also implemented using TypeScript and the NestJS framework.

Education

1999 - 2003

PhD in Computer Science

Arizona State University - Tempe, AZ, USA

1994 - 1998

Bachelor's Degree in Computer Science

University of Cyprus - Nicosia, Cyprus

Certifications

SEPTEMBER 2019 - PRESENT

Technology Architect

Accenture

Skills

Libraries/APIs

Node.js, Azure API Management

Tools

Microsoft Intune, TeamViewer, Azure Application Insights, Amazon Elastic Container Service (ECS), Amazon Elastic Container Registry (ECR), AWS Fargate, GitLab, Git

Languages

C#.NET, Java, TypeScript, JavaScript, C++, SQL, Objective-C, PHP, Python

Storage

JSON, Databases, Microsoft SQL Server, Microsoft Entra ID, InfluxDB, Amazon S3 (AWS S3), MySQL

Frameworks

NestJS, Windows Presentation Foundation (WPF)

Paradigms

DevSecOps

Platforms

Azure, Amazon Web Services (AWS), Software Design Patterns, Blockchain, Apache Kafka, Blockchain Platforms

Other

3D Geometric Analysis, APIs, Software Design, Requirements, Computer Graphics, Security, Software, Algorithms, Amazon RDS

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