
Rafał Kalinowski
Man of many interests, with deepest love for IT. Specializing in backend and data & systems integration technologies. Web3 contributor (full stack and Smart Contracts), Code4Arena warden & Developer DAO member. Passionate about Linux, programming and language learning. Open-minded, people person.
Experience
Full Stack Web3 Dev | IDriss (part time)
2022-06 ⇒ actually
- Writing new smart contracts & developing existing ones
- Developing SDK for other developers to use
- Developing internal & public full stack codebases
Full Stack Integration Engineer | contractor for Allegro
2020-01 ⇒ actually
- Full stack (Java + React/Angular) development
- Designing whole system architecture for new integration stack
- Designing & development of integration data pipelines
- On-call Linux admin support for integration platform
- Building inhouse developer tools (cron event scheduler, utility dashboard, graphical code generation tool)
Integration Engineer | contractor for Bunge
2018-07 ⇒ 2019-12
- Development and maintenance of interfaces based on TIBCO BusinessWorks, Web Services, Active Database (ADB) and SAP Adapters; integrating ERP and CRM systems
- Cooperation with business users and providing L3 support
- Implementation and maintenance of CI / CD pipeline
- Working in an international environment, realizing projects with teams from Asia, Europe and America
- Building inhouse developer tools (e.g. event scheduler, log processor)
Android app developer (part time)
2017-02 ⇒ 2018-02
- Implementing mobile coaching app for Android platform in Java
Integration Engineer | contractor for Roche
2015-02 ⇒ 2018-07
- Development and maintenance of interfaces based on TIBCO BusinessWorks, BusinessConnect, Web Services, Active Database (ADB) and SAP Adapters; integrating ERP and CRM systems based on specification
- Preparation of technical documentation
- Development of internal tools written in Scala
- Cooperation with business users and providing L3 support
- Implementation and maintenance of utilities for Tibco BW and EAI platform in Java and Scala
- Working in an international environment, realizing projects with teams from Asia, Europe and America
Master of Ceremonies | JokeR
2009-06 ⇒ 2018-09
- leading wedding receptions and playing guitar
Education
Software Engineering
2014 ⇒ 2019
Warsaw School of Information Technology
English philology
2011 ⇒ 2014
English Teaching College in Ostrołęka
Abilities
Languages
🇵🇱 Polish native
🇺🇸 English business fluency
🇪🇸 Spanish intermediate
🇷🇺 Russian beginner
Interests
🐧 Linux
🥁 Playing musical instruments
Language learning
Web3 technologies
Economics
Key achievements
🏅 🏆🏆🏆 2022 ETHOnline global hackaton finalist (14 finalists out of 360 participating teams): Turbo-DIPaaS project
🏅 Speeding up business critical data processing pipeline ~1500x (from 2 hours to 5 seconds)
🏅 Creating many tools used internally by teams (CI/CD pipelines, logs and management utilities, event schedulers, automation tools, etc.)
🏅 Development of high-volume clinical data transfer solution
🏅 Development of Data Sourcing solution with MongoDB clusters harmonizing millions of requests daily
Skills
⚡ EAI Technologies: Tibco BW Suite, EMS, BusinessConnect, Sterling B2B Integrator
⚡ Languages (from best to worst fluency): Java, TypeScript, Solidity, Kotlin, SQL, Go, C++, Bash, Haskell, Scala
⚡ Frameworks: React, Angular, SolidJS, ChakraUI, SemanticUI, Bootstrap, Spring, NodeJS, GraphQL
⚡ Tools: Kubernetes, Docker, Bamboo, GitHub Actions, Hardhat
⚡ Distributed Systems communication protocols: Kafka, Hermes, RabbitMQ, ElasticSearch, Apache Pulsar, JMS
Side projects
Turbo-DIPaaS - 🏆 winning project for ETHOnline 2022. No code Web3 integration project. TypeScript, NodeJS, React
IDriss - contributing to IDriss - Web3 swiss-knife for non crypto-native people. TypeScript, Solidity, Hardhat
Live EVM Debugger - tool allowing for debugging, tracing and simulating on-chain transactions (work in progress). TypeScript, SolidJS, GraphQL, Hardhat
SupplyChain - simple online shop and blockchain based supply chain (work in progress). Solidity, Go, TypeScript, React, Hardhat