Konstantinos T.

Konstantinos T.

Senior Software Engineer

Greece
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About Me

Highly-experienced PHP Developer with a keen interest in lifelong learning and new technologies; with technical expertise in the use of HTML5, CSS, CSS Frameworks, and JavaScript in the design and iteration of microservices and backend applications for clients. I am skilled in testing frameworks with PHPUnit, Codeception, and Jasmine and use different web servers, database engines and CI environments for server administration on projects.

Work history

UpStack
UpStack
PHP Developer/PHP Technical Interviewer
2018 - Present (6 years)
Remote
  • Creating and developing innovative software solutions for clients across a broad range of industries.

  • Work with distributed cross-functional teams in ensuring all features are being delivered efficiently and on-time using agile methodologies.

  • Act as a technical mentor within Upstack and run interviews during weekly developer meetings.

SoMobile
SoMobile
Senior Web Developer
2018 - Present (6 years)
Netherlands (Remote)
  • Implemented and maintained new features for SoMobile's shop; prioritizing user experience, modern design, performance, and stability.

  • Optimized components, implemented caching, and utilized best practices in the development of highly responsive web-based solutions for SoMobile.

  • Troubleshoot production problems relating to SoMobile's e-commerce solution; reviewing suggestions for improvements and enhancement.

Firm 24
Firm 24
PHP Developer
2018 - 2019 (1 year)
Amsterdam, Netherlands
  • Provided full lifecycle development including design, development, testing and implementation of backend/frontend client dashboard for online notary services..

  • Developed and maintained comprehensive architecture integration documentation for clients.

  • Identified process improvements and enhancements to existing business and IT processes that increased operational efficiencies.

Leaseweb
Leaseweb
PHP Developer
2018 - 2018
Amsterdam, Netherlands
  • Followed established coding standards and development process to refactor internal company software to the highest quality..

  • Provided responsive design and development of added features for the emergency handling of tickets.

  • Offered status updates on ongoing projects, and troubleshot issues when they arose efficiently.

Schipol Group
Schipol Group
Backend PHP Developer
2017 - 2018 (1 year)
Amsterdam, Netherlands
  • Improved the user experience by implementing new features for users of the Amsterdam Schipol airport website.

  • Successfully assisted with backend services and the smooth interchange of data between users and servers for continuous integration.

  • Ensured high performance and responsiveness to requests using the ELK stack.

de Persgroep
de Persgroep
Full Stack Developer
2016 - 2017 (1 year)
Amsterdam, Netherlands
  • Helped in improving organizational processes by setting up monitoring alarms using Arduino and a Minion toy..

  • Conducted system analysis and code reviews on critical applications for the online platform for IT specific job seekers and talent seekers.

  • Oversaw tasks for the release and packaging of CI solutions on the online platform and its application.

Coolblue
Coolblue
PHP Developer
2016 - 2016
Rotterdam, Netherlands
  • Wrote code to upgrade project from PHP 4 to the latest version and standards.

  • Prepared the application for the internationalization of a big retail website with thousands of users per hour.

  • Performed unit testing and end-to-end testing of codes for the project.

Growing Minds
Growing Minds
PHP Developer
2015 - 2016 (1 year)
Amsterdam, Netherlands
  • Determined the time estimates for developing REST APIs using Symfony components, Propel ORM, and Restler for communication between client and server applications..

  • Created and modified software for the implementation of automated integration of client application with Salesforce using REST, Bulk API and Exact Target.

  • Designed, developed and modified enterprise-wide system workflows.

Lely
Lely
PHP Developer
2015 - 2015
Maassluis, Netherlands
  • Developed and tested applications for an internal portal software.

  • Reviewed and modified code to implement CI processes with Jenkins, and unit acceptance using Codeception.

  • Provided technical consultation and support by writing queries for reports on SQL Server 2008.

Irdeto
Irdeto
PHP Developer
2014 - 2015 (1 year)
Hoofddorp, Netherlands
  • Adhered to coding styles and development best practices for a new full stack project component.

  • Conducted usability testing, A/B testing, behavior measurement and analysis experience with Python (pytest, suds, pygen)

  • Worked closely with the UI/UX team to ensure quality design and experience.

Wrap the Gift
Tech Lead
2014 - 2015 (1 year)
Amsterdam, Netherlands
  • Analyzed, resolved, responded to and documented end users inquiries.

  • Troubleshot and provided technical support and regular reviews on the operating software.

  • Distilled fast-moving product requirements into tangible engineering tasks and designers for the client.

Mogben
Mogben
Senior PHP Developer
2012 - 2012
Amsterdam, Netherlands
  • Liaised with product owners to understand their requirements, and create REST web services for mobile apps.

  • Served as technical support to backend services and the interchange of data between the server and users.

  • Worked with UX designers and engineering teams on the design, iteration, and delivery of engaging products and services for clients.

MS League
MS League
Senior PHP Developer
2010 - 2012 (2 years)
Marousi, Greece
  • Provide technical leadership and guidance to agile teams including on site and remote/offshore resources.

  • Identified and provided recommendations for system process improvements.

  • Liaised with system engineers to ensure the rapid deployment of architecture, system automation, monitoring and operational procedures for robust operations.

Velti
Velti
UI Developer
2009 - 2012 (3 years)
Remote
  • Worked with frontend and backend development teams in developing highly visible interactive web pages and applications.

  • Oversaw the translation of precise software components into clean, organized HTML, CSS and JavaScript code.

  • Planned, designed, implemented and tested features and improvements to software UIs for clients.

Portfolio

Senior Software Engineer - FleetPass
Senior Software Engineer - FleetPass

Fleet Pass is a fleet tracking application with a web interface, that allows businesses to be able to track their fleet in real-time, communicate with them safely, assign routes to them and more, using only a mobile device. All these features use nothing but a smartphone, no extra hardware needed. Features included: View in a full-screen map all of your assigned locations for the day; Chat with the dispatchers without typing anything; Get live information about the locations in your route; Eco Mode for consuming less battery power; Ability to reorder/remove locations in your route as you see fit. I was the REST API, web panel and Android app developer for the project as well as taking over the deployment and architectural tasks for the application. Ensured that the app was tested to meet total performance requirements.

Lead Developer - MS League
Lead Developer - MS League

MS League is a sports gaming platform in which users create and manage their team, trade stocks of players, interact and win prizes. Users can constantly check their team's status and watch the progress of their leagues at the touch of a button. It allows the capability to view player stats from last week or the whole season. Developed the game with trading and social features. Set up the development environment and played a key role in the decisions made for the game as well as helped in writing the algorithms used for gaming calculations. Technologies used in the project: PHP, Yii, CSS, Javascript.

Owner - Quizin
Owner - Quizin

Worked on a personal project that uses Raspberry Pi and small screen solutions for recipe management and kitchen related information. Developed a dashboard for the solution and fixed bugs and defects. Optimized the interfacing of the application with multiple systems to ensure a manageable and flexible use. Technologies used in the project: Python, QT4, PyQT5, PHP, Symfony, Ionic, Angular2.

Education

Education
Bachelor of Science, Computer Information Systems
DeVry University
1999 - 2004 (5 years)