Projects

Joined the team at the beginning of the year. I was tasked with building and delivering standalone web and mobile application that could be consumed by one of the clients within 6 months.
First release main purpose was to provide payment capability for third party web application via common forms of payment like credit cards or paypal.
At the same time it had to be accessible, SII/GDPR/PCI compliant, support Fraudcheck/3DS and translate to 26 languages.

First two months I spent on architecting and building the project core like - frontend, backend, ci/cd, automation, CMS integration, analytics.
Next months were focused on delivering business capabilities and solving edge cases like session expiration or support for older mobile devices.

Project was delivered to Production one week ahead of time. It is a shared payment page used by many apps.

After working for a few years in Digital Workspace project the frontend was getting bigger and bigger and we’ve made a decision to build a dedicated middleware to improve the performance and UX.
I was tasked to design, built PoC and implement middleware based on BFF (Backend for the Frontend) architecture for multiple Sabre frontend applications.

After a year, Experience Layer was created as highly scalable and resilient stateless API based on Apollo GraphQL, written in typescript and deployed as GCE to GCP.
It’s main role was handling orchestration, connection to multiple API providers as well as eliminating over fetching by adjusting response to the client needs (mobile vs desktop)
Built as cloud native solution leveraging terraform for deployment and GCP for monitoring and alerting.
Semi-auto typescript typed, generated based on consumed API swagger definitions as well as from exposed graphql schema for application and unit/ integration/e2e tests.

Joined the team of two year old E-commerce project providing travel agents and airport agents check-in, boarding, ancillaries/seats addition/purchase capabilities as responsive web and native application.
Project was a mess, most of the original team left or was about to leave. My first year I spent on improving various aspects of the application. Mostly focused on basics like introducing common code formatting, linters, enhancing test coverage, adding e2e tests, building Jenkins CI/CD, updating documentation, formalising contributors guide, moving deployment to AWS and improving UX.

Once project was stabilised I was mainly occupied with enhancing project with new business features, handling design, building PoC, implementation and documentation.
At the same time I was making sure project is up to date with latest software.

Project was split into multiple modules each designed to serve a different purpose:

• common platform - separate repository used to build common react components shared across multiple frontend applications via storybook
• ui - frontend for the web application
• experience layer - dedicated backend for the frontend handling orchestration and normalising data
• e2e - handling e2e tests for the frontend, split into different categories like sanity/smoke/fft/st tests
• bridge - layer handling communication with native devices like boarding pass scanner or bag tag printer
• native - native application for Android and iOS

Today Digital Workspace is used by few dozen airlines across hundreds of locations in the world.

Joined the team in the middle of second big release. It was my second big E-commerce project used by millions of users across the world. It’s main purpose was to provide highly customisable Whitelabel product for booking and managing airline reservations.
My first year I spent enhancing it with new key features and improving various aspects of the application.

On one end I focused on features like ability to exchange reservations, pay for booking with loyalty points, supporting refunds/cancellations and managing already booked flights. On the other I had to make sure that each aspect like UX, developer experience, performance, ci/cd, monitoring, accessibility, testing didn’t fall behind.
It was a very challenging year but at the end of it project was used by more than 10 airlines across 2 continents.

Next year brought even more challenges. Application was migrated from on-premises setup into AWS. CI/CD was rewritten and migrated from TeamCity to Jenkins. Frontend became WCAG 2.1 compliant. E2E tests were added. In house CMS integration.

Today Digital Experience is used by dozens of airlines supporting millions of users, actively being enhanced. In 2021 together with Digital Workspace and 2 more frontend projects it was integrated with Experience Layer backend API to enhance UX.

I was tasked with designing Java based API providing Airline Check-In capabilities for internal applications and external Sabre customers.
Over a year REST and GraphQL API was created based on Java and Spring. Product is successfully being used today by multiple customers.

When I joined Sabre Sonic Mobile was an outdated Full Stack Project based on Java/Spring/Oracle on the backend and Backbone/JQuery on the frontend.
It was used to provide functionality to book new flights and exchange, refund, cancel existing reservations.
First few months I spent on learning and improving architecture and tools of the project.
Later I changed my focus and mostly worked on designing and implementing new features.

I worked on E-commerce application providing easy to use online interface for ABB Products, Parts and Repair order processing.
It was a complex application built in multiple programming languages and spanning across multiple systems. Those included Struts in the frontend and backend in Java, C#, Visual Basic, Oracle, OMS.

First two years I spent most of my time developing new functionalities and maintaining existing product. After that we decided to migrate UI from Struts into brand new framework - AngularJS. That required also backend refactor and exposing a brand new REST API created in Spring.
I was leading the effort, starting from the design & approach through implementation and testing.
It was a great success and after a year of gradual component replacement we migrated entire UI into brand new architecture.

My second project also an internal tool was used to establish connection between various applications using different methods/protocols. Project was heavily reliant on linux and bash scripts.
Most of my time was spent enhancing existing functionality by adding new applications support.

In my first project at IBM, I spent most of my time developing and maintaining internal project used to create graphical components such as buttons or tables directly in eclipse and translate them to swing, jsf or pure javascript/dojo solution.
This gave me unique opportunity to work with multiple technologies across backend, frontend, database and server.