Senior Go Software Engineer

2/2021 – 4/2022

Developing microservices in Go (golang). Implementing new gamfication features like achievements, rewards and ranking system to an EdTech platform called Brainly.

Technology stack: Go (golang), PostgreSQL, RabbitMQ, GraphQL, Redis, kubernetes, Docker

Amazon Web Services (AWS), Docker, Golang, Graphql, Kubernetes, Postgresql, Scrum

8/2018 – 1/2021

Project: Carrotspot - SaaS Loyalty Platform
· Responsibilities: Developing backend logic in Kotlin, developing Chaincodes (Hyperledger Fabric) in Go (golang), architecture analysis & planning, assisting in devops operations (e.g. pipeline configuration for CI/CD)

· Technology Stack: Kotlin, Java, Maven, Spring, REST API, Microservices, Blockchain Hyperledger
Fabric, Go (golang), Kafka, Docker, Kubernetes, PostgreSQL, Bash, Azure DevOps, Azure Pipelines (CI/CD), GCP

· Additional Technical PM Responsibilities: Developers Team management, Requirements Engineering, Solution delivery planning
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Project: Greenstock - Electromobility & Virtual Power Plant
· Responsibilities: Developing backend logic in Kotlin, developing Chaincodes (Hyperledger Fabric) in Go, architecture analysis & planning, assisting in devops operations (e.g. pipeline configuration for CI/CD)

· Technology Stack: Kotlin, Java, Maven, Spring, REST API, Microservices, Blockchain Hyperledger Fabric, Go (golang), Docker, Kubernetes, PostgreSQL, Bash, Azure DevOps, Azure Pipelines (CI/CD), GCP

Golang, Google Cloud, Hyperledger, Java (allg.), Apache Kafka, Kotlin, Kubernetes, Postgresql, Representational State Transfer (REST), Scrum, Spring Framework

4/2018 – 8/2018

Project: Ethereum Blockchain - ICO
· Responsibilities: Developing Smart Contracts on ETH for ICO, Smart Contracts maintenance, ETH Node infrastructure maintenance

· Technology Stack: Blockchain Ethereum, Solidity, Truffle, NodeJS, web3.js, Geth Node, Parity Node
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Project: Ethereum Blockchain - Tokens ERC223 Payments
· Responsibilities: Developing Smart Contracts on ETH for Online Shop integration with ETH ERC223

Token payments, Solution architecture analysis & planning
· Technology Stack: Blockchain Ethereum, Solidity, Truffle, NodeJS, web3.js, Geth Node, Parity Node

· Additional Technical PM Responsibilities: Developers Team management, Solution delivery planning,
Technical Contact for clients, Solution Maintenance & Support

Blockchain (allg.), Projektmanagement (IT), Scrum, Solidity

11/2016 – 3/2018

Working on project "mDocuments" (pl. "mDokumenty") where you can have your governmental issued cards in a secure mobile application.

Responsibilities: Developing cryptography (PKCS standards) and HSM integration functions in the
backend system, Developing iOS app ’mCitizen’ (pl. ”mObywatel”), Developing cryptography library
(PKCS standards) for iOS app using OpenSSL

· Technology Stack: Java, Maven, SOAP, SoapUI, Wildfly, Clustering, Load balancing, PKCS Cryptography, HSM, HSM Simulator, Swift, C, OpenSSL

iOS Entwicklung, Java (allg.), SOAP, Software Architecture, Swift (Programmiersprache)