Profileimage by Roman Semko Web Developer from Leipzig

Roman Semko

not available until 01/31/2022

Last update: 30.07.2021

Web Developer

Company: SemkoDev GbR
Graduation: Bachelor
Hourly-/Daily rates: show
Kann je nach Einsatzort variieren
Languages: German (Full Professional) | English (Full Professional) | Russian (Full Professional) | Spanish (Full Professional)


Python, Sass, ECMAScript (ES6), CSS, SCSS, HTML, JavaScript, TypeScript, Golang, PHP, Gherkin, C/C++, Java, C#, Solidity

Frontend Tools, APIs and Frameworks
Angular, React, Vue.js, JSX, Redux, Mobx, Selenium,, Jest, JSON Web Tokens (JWT), OAuth 2,, Bootstrap, Material Design, Material UI, HTML, CSS, SASS, SCSS, WebRTC, jQuery, jQuery UI, Vuex, WebGL, d3.js, Webpack, Next.js

Backend Tools, APIs and Frameworks
Django, Django REST Framework, Node.js, Gin, RPC, gRPC, Express.js, Feathers.js, RESTful Microservices

Docker, Docker Compose, Kubernetes, Gitlab CI/CD, AWS Lambda

Data processing, Messaging and Databases
PostgreSQL, MySQL, AWS RDS, AWS DynamoDB, AWS S3, Elasticsearch, MongoDB, Redis, Memcache, Kibana, Pandas, Scikit-learn, Machine Learning, Tableau

AWS, Google Cloud, Azure, Heroku

Android, Linux, Ubuntu

Scrum, Microservices Architecture, Business Intelligence (BI)

Distributed Ledgers, Distributed Messaging, IOTA, Electron, Raspberry Pi, Chat Bots

Industry Expertise
Distributed Ledger / Blockchains, Ethereum Smart Contracts, Finances / Trading, Logistics, Social Networks

Project history

01/2007 - Present
Web-Development (>10.000 employees)
Updated technological profile (project history) can be found here:

Time and spatial flexibility

Am not traveling internationally on a regular basis. Exceptions may apply depending on the project.


Our website:

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