Blockchain:- Wrote smart contract for my own ERC20 token in Solidity- Interacted with Ethereum smart contracts from Java web application to automatically execute transactions without human interventionFintech:- Developed spread trading cryptocurrency bot for various exchanges in Java- Redeveloped bot in Go (golang) which connects simultaneously to hundreds of WebSockets and examines received dataOther:- Serverless project created with Angular and Firebase (https://tippingfriends.com) which serves hundreds of users- Created cross platform multiplayer game with Unity3D (C# .net) and Firebase, where users play with realtime updates

- Improving software delivery process through automation of processes and coaching of engineers- Leading change to Kubernetes and with that improving scalability and cost effectiveness in a micro-service landscape- Defining guidelines for micro-service development and architecture across different teams- Collaborate with off-shore external delivery teams to help scale operations and bring in solutions according to our needs

- Building and architecting scalable, resilient and secure micro-services- Introduced development with docker, implemented and deployed first service with reactive micro-service framework- Structured the way team works with visualizing, defining and managing software development workflow- Increased standards for service quality with introduction of automated unit tests, pull requests, code reviews and integration tests- Reduced DevOps setup time by more than 20x by automating CI/CD pipeline (Git, Bamboo build and deployment plans)- Ensured future sustainability and ease of development with creation of common code base with integrated best coding practices- Drive best practices for agile way of work (Scrum) and share them with business counterparts to more effectively transform business requirements to deliveries - Integrate external delivery teams or new team members (working across different global locations) fast, seamless and in an inclusive wayTech stack: Java, PlayFramework, Microservices, AWS, Docker, Oracle, Javascript, HTML, Angular, Atlassian, SonarQube, JUnit, Node, Spring, Scala, Hyperledger (Hackathon)

- Increased mobile apps usage by more than 100% by redesigning and reworking UX of existing apps- Provided well though architectural solution to switch existing mobile apps to new oAuth 2.0 authentication with zero downtime- Improved synchronization time of particular app by 40x, which increased quality and frequency of updates- Proposed and managed creation of automated CI/CD pipeline for building apps (Bamboo, Bitbucket)- Architected, implemented and rolled out mobile apps for SAP ByDesign ERP, which brought 100% coverage of companies sales force

- Designed, administrated, optimized DB2 databases with hundreds of tables- Developed first Android application in the company

- Implemented responsive web applications with MySQL, PHP and Apache- Developed and established best practices of working with ORM, databases and automated generation of models for CodeIgniter/Laravel frameworks