Piotr – Python, Django, React

Real-time bidding Ad Exchange. A Web application for the demand side of an OpenRTB and ad-network mediation ad exchange for omnichannel ad formats and environments. Consisted of multiple backends and UIs.

• Developed a new service from scratch used by various teams.
• Discovered & fixed SSO security issues.
• Implemented several team-wide improvements in code and management domain
• Fixed various performance issues
• initiator and responsible for upgrading React app version and Kubernetes cluster
• Worked as a Full-stack engineer, involved in Full Product Life Cycle
• Developing, designing, testing, and deploying to production. Software deployed in a big Kubernetes cluster.

A platform for digital advertisement (Digital Signage), a software for managing distributed screens and displays.

• Migrated old environment to AWS and Kubernetes cluster;
• Split monolithic application into microservices;
• Added real-time communication with end devices (web sockets);
• Added monitoring and performance tests;
• Created UI for the platform (Angular);
• Managed to deliver all functionalities within Sprints.

Infrastructure for the future of art investments and donations engineered on the blockchain.

• Delivered a working prototype of a product that was used in production;
• Created integration between blockchain infrastructure and web application;
• Built frontend UI (Angular) for user interactions;
• Iterated and discussed the scope of the product with investors;
• Did the infrastructure setup on GCP.

A Quality of Service product and software to manage a cluster of servers with the installed product. (+ HA features)

• Delivered a highly efficient and optimized kernel module to process packets (Netfilter);
• Developed C++11 OOP (TDD) application that applied business logic;
• Introduced IPC mechanism (shared memory), ring buffers, and huge pages for communications;
• Did code reviews;
• Supported clients during product launches.