Daniel Bigos
Verified Expert in Engineering
Software Developer
Warsaw, Poland
Toptal member since March 3, 2021
Daniel is a software engineer focused on functional programming. He gained professional experience in blockchain technology while working on large projects such as Golem. He also has experience in building startups and designing products, as he is a co-founder of DoxyChain, a blockchain-based document management system.
Portfolio
Experience
- Python - 2 years
- Docker - 2 years
- Blockchain - 2 years
- Ethereum - 2 years
- Elixir - 1 year
- Hyperledger Fabric - 1 year
- Tendermint - 1 year
- Rust - 1 year
Preferred Environment
MacOS, Jira, Confluence, Bitbucket, Visual Studio Code (VS Code), Slack, Terminal
The most amazing...
...thing I've achieved is winning second place at the Global Legal Hackathon in Poland in 2019. Our idea evolved into a startup called DoxyChain.
Work Experience
Blockchain Developer
Imapp
- Prepared a matching engine for market offers such as asks and bids in Elixir.
- Made a simple front-end demo application for the client in Angular.
- Developed a communication layer between DAML on Fabric and back-end applications in Elixir.
- Prepared HLF infrastructure, including channels, organizations, and external chain code.
Co-founder | Software Engineer
Doxychain
- Made a simple demo of the document management system for marketing purposes, using Elixir, CircleCi, and React.
- Prepared the back-end side of the document management system for special document types for one of the Polish legal chambers using Elixir and Tendermint.
- Built the blockchain part of the SaaS document management system available to every user in Elixir and Tendermint.
Software Engineer
Golem
- Developed a proof of concept for spreading transcoding tasks on Golem in Python.
- Prepared a transcoding demo, including the back end in Python and Django and front end in Angular, that connects to Golem and spreads transcoding tasks.
- Wrote a payment driver for New Golem (YAGNA) in Rust. The driver connects to the Ethereum blockchain and makes ERC-20 token payments.
- Made a proof of concept of zkSync payments for the New Golem in JavaScript.
Junior Software Engineer
Innsoft
- Made a new library for parsing XML files in C++11.
- Tracked and fixed bugs in applications processing data files such as XML, CSV, and TXT.
- Developed a database schema and connector app for specific energy industry data.
Experience
DoxyChain System
Education
Master's Degree in Computer Science
Warsaw University of Technology - Warsaw, Poland
Bachelor's Degree in Computer Science
Warsaw University of Technology - Warsaw, Poland
Certifications
Certified Scrum Master
SCRUMstudy
Scrum Fundamentals Certified
SCRUMstudy
Skills
Tools
Docker Compose, Jira, Confluence, Bitbucket, Slack, Terminal
Frameworks
Tendermint, Angular, Boost, Django
Platforms
Blockchain, Ethereum, Hyperledger Fabric, Docker, Oracle Database, Hyperledger, MacOS, Visual Studio Code (VS Code)
Languages
Elixir, Rust, TypeScript, Python, C++11, SQL, JavaScript
Paradigms
REST, Functional Programming, DevOps, Scrum
Other
Software Development, Web Programming, Software Design, IT Project Management, Software Architecture, Waffle, Digital Asset Modeling Language (DAML)
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