alexpilk

Built and deployed a Django-based identity provider service to integrate SSO between the Archblock Stablecoins customer portal and Salesforce. Developed a tool for detecting missing funds by comparing transactions on 4 blockchains to API feeds from 2 banks. Saved the ops team 2 hours daily (asyncio & ReTool). Developed integrations with TRON and Avalanche blockchains for minting TUSD stablecoin. Ensured e2e test coverage of the minting (currency emission) process. Developed a CLI tool for managing private keys in the Amazon Cloud HSM. Adapted Cloud HSM-based ECDSA signatures for signing Ethereum transactions. Improved KYC/KYB integration with external compliance services to gather more customer data. Ensured e2e test coverage, fixed memory leaks from image compression. Migrated all services from alpine to slim-buster Docker images & pip-tools for dependency management. This reduced build errors during deployments & simplified setting up dev environments for new team members.

Reverse-engineered a 10 year old legacy codebase, preserving the existing APIs. Developed a data pipeline processing vast quantities of logs from hundreds of base stations close to real time, calculating metrics and pushing findings & alerts to third party systems. Used asyncio & dramatic to parallelise the data processing pipeline. Developed the Kubernetes infrastructure from scratch, as well as a CI/CD pipeline for automatically deploying the changes to 4 different environments. Experimented with Faust & Kafka, eventually moving to dramatic & Redis for distributed task queues, as well as pymongo & FastAPI. Implemented application & infrastructure monitoring based on Prometheus & Grafana (CPU & memory utilisation, queue size, data package tracking etc.)

Conducted two 2-day Python workshops for groups of 13-15 engineers. Refactored and ported legacy Python applications to Python 3. Developed a design pattern for sharing SSH and database sessions for the same equipment between different libraries (improved speed and code reusability). Developed a tool for automatic equipment selection during automated tests within a web application written in Django with DRF and AngularJS. Rewrote an application that runs in a docker container, monitors base stations using web sockets and passes the findings to the DB via Django API (twisted, autobahn, channels). Wrote unit tests for python libraries in pytest. Produced video training on test automation for newcomers.

Developed and refactored python libraries for test automation. Wrote scripts for static analysis of Robot Framework tests. Reverse engineered SOAP and REST APIs based on Java source code in order to develop python libraries. Collaborated using Git and SVN for version control. Code reviews using Review Board, Fisheye and GitLab. Coding-challenges and workshops for newcomers.

Developed receiver & transmitter circuits. Designed printed circuit boards (PCBs) in Fritzing. Developed Arduino-based software for the receiver & transmitter. Designed and 3D-printed enclosures for product prototypes. Composed, arranged, recorded and mixed music for the demo video of the first prototype. Filmed & edited the demo video in Adobe Premiere Pro.