I am a senior full-stack software engineer focused on building secure, scalable, and reliable systems with a track record of delivering production-ready solutions and maintaining high client and stakeholder satisfaction. My experience spans leading platform-owned projects, architecting real-time systems, and automating infrastructure at scale. I enjoy turning complex problems into robust, maintainable software and collaborating with cross-functional teams to deliver measurable business impact.…

Apostolos Kapetanios

I am a senior full-stack software engineer focused on building secure, scalable, and reliable systems with a track record of delivering production-ready solutions and maintaining high client and stakeholder satisfaction. My experience spans leading platform-owned projects, architecting real-time systems, and automating infrastructure at scale. I enjoy turning complex problems into robust, maintainable software and collaborating with cross-functional teams to deliver measurable business impact.…

Available to hire

I am a senior full-stack software engineer focused on building secure, scalable, and reliable systems with a track record of delivering production-ready solutions and maintaining high client and stakeholder satisfaction.

My experience spans leading platform-owned projects, architecting real-time systems, and automating infrastructure at scale. I enjoy turning complex problems into robust, maintainable software and collaborating with cross-functional teams to deliver measurable business impact.

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Skills

Experience Level

Node.js
Expert
React JS
Expert
TypeScript
Expert
Docker
Expert
Elasticsearch
Expert
CSS
Expert
Kubernetes
Expert
Microsoft SQL
Expert
Bootstrap
Expert
AWS
Intermediate
GitHub
Intermediate
Data Visualization
Intermediate
ETL
Intermediate
Python
Intermediate
Bash
Intermediate
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Language

Greek, Modern
Fluent

Work Experience

Senior Full-Stack Architect with Platform Ownership at NOVA
March 1, 2008 - January 31, 2020
Led full-stack development of Nova Platinum Support B2B Ticketing platform, delivering a scalable real-time enterprise system with WebSocket-powered live updates and a high-performance architecture. Architected a high-throughput log aggregation and analytics platform using the ELK stack to ingest large telecom syslog data (~150GB/day) with scalable, fault-tolerant architecture and real-time search capabilities. Led development of Spectra Smart Outage System for real-time operational monitoring and outage management to automate incident tracking, improve service visibility, and support enterprise-scale network operations. Developed microservices architectures to enhance modularity and scalability of the platforms. Owned infrastructure automation, streamlining deployment and maintenance processes. Ensured applications security by passing comprehensive penetration testing and implementing best practices.
Operations Support Engineer at Upstream
June 1, 2007 - March 31, 2008
Resolved 95% of critical system issues within SLA, minimizing downtime and enhancing platform reliability through proactive system optimization and support. Automated routine monitoring tasks, reducing manual workload by 40% and accelerating incident response times, improving operational efficiency.

Education

Bachelor's Degree at Technological Education Institute of Piraeus
January 1, 2001 - December 31, 2006

Qualifications

Node JS : Advanced Concepts
February 1, 2025 - May 12, 2026
Advanced CSS 3 and Sass
April 1, 2023 - May 12, 2026
React and Typescript : Build a Portfolio Project
March 1, 2023 - May 12, 2026
NGINX Fundamentals : High Performance Servers from Scratch
September 1, 2022 - May 12, 2026
Bootstrap 4 From Scratch with 5 Projects
March 1, 2022 - May 12, 2026
Glassfish Server Administrator for Beginners
January 1, 2022 - May 12, 2026
Administering Microsoft SQL Server 2012/2014 Databases
January 1, 2017 - May 12, 2026
Querying Microsoft SQL Server 2012/2014
May 1, 2016 - May 12, 2026
Red Hat Certified Systems Administrator
July 1, 2010 - May 12, 2026

Industry Experience

Telecommunications, Software & Internet, Professional Services
    paper Nova Platinum Support

    Designed and developed a full-stack enterprise B2B support and ticketing platform focused on security, scalability, reliability, and operational efficiency.

    Built using modern technologies including Next.js, TypeScript, PostgreSQL, React, Tailwind CSS, Material UI, Docker, Nx Monorepo architecture, and WebSocket real-time communication.

    Key Features
    Secure authentication with OTP / 2FA
    Role-based access control (RBAC)
    Real-time ticket updates and notifications
    Enterprise audit logging and monitoring
    Multi-tenant architecture
    Advanced admin management console
    Email notification workflows
    High-performance server actions architecture
    Dockerized deployment environment
    Production-grade logging and error handling
    PostgreSQL stored procedures and optimized queries
    Responsive and modern UI/UX
    Technologies Used
    Next.js / React
    TypeScript
    Node.js
    PostgreSQL
    Sequelize ORM
    Auth.js / NextAuth
    Redis
    Docker
    Nx Monorepo
    Material UI
    Tailwind CSS
    Playwright / Jest
    My Role
    Full-stack software engineer
    System architect
    Backend engineer
    Frontend engineer
    DevOps & infrastructure integration
    Database design and optimization
    Security implementation

    This platform was developed with a strong focus on maintainability, stability, enterprise-grade security, and excellent user experience.

    paper Nova Platinum Support

    Designed and developed a full-stack enterprise B2B support and ticketing platform focused on security, scalability, reliability, and operational efficiency.

    Built using modern technologies including Next.js, TypeScript, PostgreSQL, React, Tailwind CSS, Material UI, Docker, Nx Monorepo architecture, and WebSocket real-time communication.

    Key Features
    Secure authentication with OTP / 2FA
    Role-based access control (RBAC)
    Real-time ticket updates and notifications
    Enterprise audit logging and monitoring
    Multi-tenant architecture
    Advanced admin management console
    Email notification workflows
    High-performance server actions architecture
    Dockerized deployment environment
    Production-grade logging and error handling
    PostgreSQL stored procedures and optimized queries
    Responsive and modern UI/UX
    Technologies Used
    Next.js / React
    TypeScript
    Node.js
    PostgreSQL
    Sequelize ORM
    Auth.js / NextAuth
    Redis
    Docker
    Nx Monorepo
    Material UI
    Tailwind CSS
    Playwright / Jest
    My Role
    Full-stack software engineer
    System architect
    Backend engineer
    Frontend engineer
    DevOps & infrastructure integration
    Database design and optimization
    Security implementation

    This platform was developed with a strong focus on maintainability, stability, enterprise-grade security, and excellent user experience.