Cristian Cartog

The client needed a new flexible configuration application for their state-of-the-art optical devices for surgical procedures. Their old system, a static PHP website, required a four-hour manual intervention for each new supported parameter under test. New board types required unacceptable set up time before they could be tested.

The client needed to build a new poker platform to support online Sit and Go, cash games, and massive multi-table tournaments. The system needed to successfully compete and surpass all other poker platforms through better security, higher stakes, higher throughput, and transparency.

The company is migrating its marketing platform from a monolith to microservices and is rewriting the JSF server-side rendered customer sites to separate Angular UIs. The alpha UI was developed in four months and was custom-tailored for one client. A better approach was needed to deliver the functionality faster, to multiple clients.

The client is developing an online management and monitoring solution for its electricity-producing hardware. Maintenance tasks and the associated scheduling, time tracking, and billing are done by the company's personnel using one integrated UI backed by microservices.

The company used its own PIM system, which had a few issues: Poorly implemented, unscalable, untested, generated lots of data issues, and was hard to maintain. A new PIM implementation was needed. PIM-ng solves all the issues of the old PIM and added additional features and data maintenance processes.

The company has it’s own customer care application used by on/off-site employees to quickly solve customer issues regarding orders, products, vouchers, coupons, personal information, loyalty points, transactions, and invoices, all during phone conversations. By implementing new features, I reduced call times by 30%, technical debt by 90%, and improved agent productivity by 10%.

The client needed an application that would allow managers to set possible career paths and job roles for employees based on their skill sets. By implementing strategic and automated processes, I reduced the decision maker's time by 50% and saved 80% of the time managers spent on employee skill evaluation.

The client had an old, complex report generation suite heavily used in the banking sector. It was built on old, deprecated, and proprietary technology, so the client wanted to migrate it to a newer technology stack. I initiated the migration leading a team of four developers, creating 30% of the core services, defined the multi-module project structure, and built the portal application. The results included a 10% savings in the time users spent by using an in-browser Excel report editing configuration.

The client wanted all company office processes (user management, contract definitions, banking data management, and package filtering, to name a few) to be managed through one unified interface: A web application that would simulate a desktop environment (multiple windows, taskbar, start menu, control panel, and notifications). Through the implementation of new features and strategic optimizations, I was able to reduce latency by 50% and reduce the application load time by 80%.

This cash flow and KPI monitoring application is the primary interface for the company's clients. The company needed it to improve client retention and build trust, so the user interface had to be sharp, polished, and very responsive. I developed 50% of the charts and graphs the client would see, and 30% of the business logic. I reduced the UI product classification tree component's response times by 50% through better data modeling and an improved traversal method. I reduced technical debt by 45% and improved test code coverage by 40%.

The client had a very old, unstable, insecure, and unappealing reporting application consisting of 170 pages. He wanted a new one that would also provide basic features such as security, content restrictions based on user roles and permissions, better response times, and, most importantly, stability. I developed clear guidelines with new functionality to achieve these goals, resulting in 30% faster report generation, 70% codebase reduction, and a time savings of 6% for users. I introduced the concept of build tools (Ant), feature tracking system (Jira), source code versioning (SVN), refactoring, and good programming principles, patterns, and practices in an inexperienced IT department.

These two internal applications, a vacation management system and a time/route/client/offer tracking system, needed only maintenance, but this quickly became too time-consuming because of the codebase's poor quality. I reduced the codebase by 55% and improved application load time by 15% through massive refactoring and the use of OOP concepts and best practices. I saved 5% of my time and 15% of the users' time by eliminating some of the recurring issues

The client wanted a full rewrite of a wide-format printer panel UI because of the UI library's licensing issues on the current version. The project was estimated for nine months for three developers (and had a pessimistic aura as the initial implementation lasted 2.5 years with five developers). I saved 22% of the budget by delivering the entire application two months earlier, improved response times by 50%, reduced the codebase by 40% through refactoring and better use of Swing, and reduced technical debt to zero, according to FindBugs and PMD.

The client was developing a rich UI for high speed, high volume document printers, and I was part of a team of ten developers building it. We saved 5% of the product owner’s time by implementing a build-time translation processor and 20% of the operators’ workload by implementing a UI wizard that would guide them in fixing runtime printer issues. We developed 60% of the OTTK library components, a Swing LookAndFeel based on Metal, which would become the standard component library for “Chinook” and subsequent printer UIs in the company.

The client needed help fixing issues on the Optical Parking System and Rear View Camera control modules for the radio navigation system that was to be installed in Volkswagen, Seat, and Skoda cars, starting in 2009. I improved RVC usability by 10% by fixing crucial issues in RVC that were constantly causing back screens. I improved OPS usability by 50% by building the picture-in-picture functionality and improved test coverage by 60%.

Test Automation Environment is a test runner/debugger capable of interpreting DSL instructions to command a car engine HIL device. The client wanted to assist engineers in writing the tests. I boosted the test writers’ productivity by 50% through the development of an Eclipse plugin with editor support for syntax highlighting, code suggestions and completion, project management, outline view, and debugger integration with TAE. I further saved 30% of the test writers’ time by implementing a UI and data processing library for a test generator tool.