Kanstantsin Kamkou

Distributed backend and streaming systems engineer. Designing, building, and stabilizing large-scale production platforms across automotive, fintech, and payments industries. Core stack: Java, Apache Kafka, Apache Flink, Kubernetes, Cloud. Working with regulated, high-load environments where reliability and performance are non-negotiable.

Stabilized and rebuilt the core GDC data pipeline, delivering a production-ready version after a failed year of development (GBps scale). Implemented cold storage, large message handling, and package merging. Added end-to-end API streaming ingestion (up to 64 MB). Decoupled Flink from Kubernetes Operator, added DFS support, and defined upgrade procedures. Extended Java backend and REST APIs for new streaming and migration workflows.

Contributed to the «TradeFinder» financial portal by migrating data pipelines, scripts (python, matlab, sh), and web interfaces to newer versions, addressing security issues and supporting ongoing maintenance and improvements.

As a core team member, responsible for the design, implementation, and maintenance of microservices within HSBC's (UK) Payments Orchestration Layer framework, a key part of their high-value, high-volume payments system. The architecture used gRPC, Kafka, Kafka Streams, and Oracle in a resilient, lowlatency mesh optimized for high throughput in a secure, regulated environment. Also provided Level 3 (L3) support.

Led an integration segment of the «Working Capital» financial project, focusing on aligning the existing ING flow with Amazon loan programs. Performed initial business analysis, and actively participated in coding, contributing significantly to the improvement and maintenance of related microservices.

Major migrations and enhancements of both backend and frontend legacy code for the medical application «TOMTEC-ARENA».

Designed and implemented ryd.pay (used by Mercedes-Benz & BP), incl. white-label APIs, payment flows, concurrent socket comms with pumps, and traceability. Built the first fleet management web app and a fuel station simulator for demos/integration. Developed full real-time infra for GPS map matching and overspeeding alerts using Flink, Flume & Kafka. Built complete BI infrastructure and its integrations.

Solutions department: - Took over the existing backend/frontend "Mellon" implementation from an outsourcing team - Led a successful backend refactoring phase for a three-year-old system - Reorganized deployment and code-quality processes - Introduced a Single Sign-On (SSO) web-framework, reducing integration time from a quarter to days - Interconnections between Business Intelligence (BI) and the Single Sign-On (SSO) framework.

- Bloopark systems GmbH & Co. KG / DE / e-commerce - Brigade / US / design studio - CHIP Digital GmbH / DE / media company - Meetville / US / online dating - Technopark Corp / US / consulting agency

- Presented my own CMS, "S-Motion," at TIBO-2005, the largest exhibition in Belarus in the field of telecommunications, banking, and office technologies. - Shell scripting on Linux for the detection of obsolete software on IBM servers. - Developed various web services and websites for large manufacturers and the national bank.

Java, C++ and Assembler x86