Christos Kapsalis

Full-Stack Software Developer

Show My Work

About Me

Full-stack software developer for 8+ years of hands-on experience across the entire development lifecycle. Front-end development in React.js, JavaScript (ES6+), CSS3, Bootstrap and HTML5. Back-end development in Node.js, Java, Lua and PHP. Currently specializing in full-stack JavaScript development, building modern web applications with React.js/Node.js ecosystem. Open to new opportunities where I can contribute to modern web applications while expanding my JavaScript expertise. Accountable, working on schedule and comfortable working as a team member.

My Skills

Front-End

JavaScript
React
TypeScript
Redux
PWA
jQuery
HTML5
CSS3
Unit Testing
Jest Testing
React Testing Library
Bootstrap
Responsive
XML/JSON
AJAX

Back-End

Node.js
Express.js
Next.js
Lua
Java
JUnit
Unit Testing
SQL
PHP
Bash
C
Regex
RESTful APIs

DevOps & Tools

Docker
Kubernetes
Git
SVN
Robot
Jenkins
DB Tools
Dev Tools
Postman
Wireshark
Balsamiq

Security & Authentication

JWT Auth
Session Mgmt

IDEs & Other

Visual Studio
Eclipse
PHPStorm
Sublime Text
CodeCharge
CMS
Agile

Work Experience

Nokia's Altiplano Controller App

Senior Technical Specialist

• Developed backend components of Altiplano Controller, an open software GUI platform connecting other Nokia's software units via RESTful APIs.

• Implemented Java-based microservices feature with JUnit testing, loaded on a Docker container and deployed on Kubernetes infrastructure.

• Managed PODs configurations and orchestrated software interactions within Kubernetes environment.

• Experience in Intent development logic, Microservices, Cloud based solutions, DevOps operations, Kibana search engine and Postman request engine.

Technologies Used:

Java JUnit Kubernetes Docker POD Microservices Postman API Kibana Git Microsoft Visual Studio Code

Nokia's WebCT and ASLM Apps

Software Engineer

• Worked mainly as Full-stack developer of WebCT (2016-2021), a software that provided a GUI to administer X-Haul microwave products. Back-end development of WebCT in Lua and DB handling with Lua-Sqlite3. Front-end development in Javascript, jQuery, HTML5, CSS, and Bootstrap framework.

• Side project development of ASLM (2018-2021), an app that produces licenses for all X-Haul products, in Java with JUnit testing in the back-end and engineered React-based components in the front-end.

• Involved with the full circle of a feature's production. Creation and reviewing of features' code, software architectural designs, Low Level Design, mock-ups, CuDo documents. Developing at least one feature per release while following a biannual release schedule.

• Peer reviewing of Code, Use Cases, Test Strategy and Test Cases, like also full-stack Unit Testing and debugging of code.

Technologies Used:

Lua JavaScript jQuery Java React.js CSS HTML5 SQL Bootstrap Unit Testing JUnit JSON Debugging Git SVN Regex Browsers' Web Developers Tools Low-Level Design Balsamiq Eclipse Jenkins DBVisualizer DB browser for SQLite CI XML Linux Agile

Nokia's FMANG App

Software Engineer

• Worked as a Full-stack developer for FMANG, an app that was managing Nokia's FlexiNG network product, offering mainly a GUI to monitor all kind of alarms, statistics and product’s health, like also managing all kind of product’s configuration.

• Contributed to back-end development of new features released on a biannual schedule in Java and Java EE Development toolset (JSF/Primefaces, Spring, Hibernate, Maven, Tomcat, Jenkins, Junit), while maintaining code quality through peer reviews of code.

• Development of the front-end in JavaScript, HTML, CSS.

• Led complete GUI redesign initiative after company’s rebranding and resolved with the help of the team a critical system-wide bug affecting application stability.

Technologies Used:

Java JavaScript CSS HTML JSON SQL JUnit JSF/Primefaces Hibernate Spring MVC Regex Eclipse Navicat DBVisualizer DB browser for SQLite Browsers' Web Developers Tools Jenkins XML Agile

Nokia's FlexiNG Product

E&V Tester

• Managed CI/CD Test Suite of 400+ test cases for Nokia's LTE network gateway (FlexiNG).

• Implemented automated testing using Robot Framework with daily CI/CD reporting.

• Enhanced testing coverage by developing new test cases and improving existing ones.

Technologies Used:

Robot Framework CI/CD Test Case Generation Bash Wireshark Linux Agile

Cybertechnics' Modus CMS

Web Programmer / Developer

• Full-stack development of Modus CMS using PHP, MySQL, JavaScript, HTML and CSS.

• Managed back-end administration and development of CMS' modules and components.

• Updating and debugging CMS’ code and executed database operations, upon customers requests.

• Implemented RAFM (Restricted Access File Manager) filesystem and integration of Ajaxplorer GUI into Modus CMS.

Technologies Used:

PHP SQL MySQL JavaScript CSS HTML JSON CMS CodeCharge Studio PhpStorm Regex Browsers' Web Developers Tools DBVisualizer XML

Projects

Face Recognition App

Full-Stack Developement Project

Main Screenshot
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AI-powered face detection application with secure user authentication and session management.

A full-stack web application that leverages the Clarifai Machine Learning API to detect human faces in uploaded images. Features user registration with secure JWT authentication, Redis-based session management for optimal performance, and PostgreSQL database for persistent storage. Implements RESTful API architecture with Express.js backend and React frontend.

  • Key Features: AI face detection, JWT authentication, Redis sessions, PostgreSQL database, RESTful API, responsive design.

Technologies Used:

Javascript React.js Node.js Express RESTful APIs JWT Session Management Redis PostgreSQL Machine Learning API CSS HTML

Robofriends App

React Development Project

Face Recognition App. A fast, responsive search application built with modern React patterns and PWA capabilities.

A Progressive Web App that demonstrates real-time filtering and search functionality using data from a RESTful API. Implements Redux for predictable state management, TypeScript for type safety, and comprehensive testing with Jest and React Testing Library. Features offline functionality through service workers and optimized performance. Built also as an SSR app with Next.js.

  • Key Features: Real-time search, Redux state management, PWA offline support, comprehensive test coverage, fully responsive design.

Technologies Used:

JavaScript React.js Redux PWA TypeScript Next.js RESTful APIs CSS HTML JSON

Get in Touch

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