Draltan Marin, Developer in Lyon, France
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Draltan Marin

Verified Expert  in Engineering

Software Developer

Location
Lyon, France
Toptal Member Since
November 28, 2018

Draltan has been working in software development on a wide variety of technologies for more than 10 years. Over the past three years, I co-founded a startup and participated in a few startup projects as CTO. This year, I've been heavily working on blockchain projects defining technical architectures and developing contracts.

Portfolio

VeePee
Java 9, React, Kubernetes, Microservices
Westart
OAuth 2, Web 3.0, Solidity
Reward Vision
React Native, Ethereum Plasma, Sidechains, Solidity, Ethereum

Experience

Availability

Part-time

Preferred Environment

Docker, Zsh, MacOS, Git, Kubernetes, Google Kubernetes Engine (GKE), Visual Studio Code (VS Code), Node.js, React

The most amazing...

...system I've designed is a blockchain solution for enterprise collaboration allowing micro-payments using side chains with a plasma-like architecture.

Work Experience

Tactical Team Lead

2018 - 2020
VeePee
  • Developed an ad hoc solution for aggregating all logistics data from diverse heterogeneous systems cumulated over time in a tight schedule.
  • Drove a team consisting of multiple specialists to provide a comprehensive view of the company stock and logistic status in order to produce the yearly accounting report of the overall company.
  • Established a good understanding of finance and specific business constraints, allowing me to propose many pertinent key product features to help the finance team validate and quickly spot inconsistencies in the computed stocks state.
Technologies: Java 9, React, Kubernetes, Microservices

Blockchain Contractor

2018 - 2018
Westart
  • Developed contracts for investment pool management using solidity.
  • Developed and deployed an airdrop (promotional token offering) system for distributing tokens including both solidity contracts and a web management interface using web3.
  • Conceptualized and implemented support for an Oauth2 connection feature allowing blockchain projects and crypto exchange markets to request access to KYC verified profiles and log in with verified customers.
Technologies: OAuth 2, Web 3.0, Solidity

Co-founder, CTO

2018 - 2018
Reward Vision
  • Defined a blockchain solution for an inter employee incentive system, including micro-payment management with a plasma-like solution.
  • Prototyped a mobile client for rewarding co-workers in React-native.
  • Prototyped Solidity contracts for communicating back and forth from main to secondary chains in order to manage micro-transactions.
Technologies: React Native, Ethereum Plasma, Sidechains, Solidity, Ethereum

CTO (Freelance)

2018 - 2018
Unicorn Bay
  • Designed a confidentiality-respecting solution for tracking asset managers portfolio performance using proxy re-encryption and distributed multi-party computation.
  • Reviewed technical whitepaper and specified a technical solution.
Technologies: Encryption, Ethereum

Co-founder, CTO

2015 - 2018
Kwenzi
  • Developed a crowdfunding platform for real estate investment projects.
  • Implemented CI/CD pipelines for automated deployment of Docker containers in AWS.
Technologies: Docker, Redux, React, Node.js

CTO, Technical Strategy Consultant

2017 - 2017
Avicen
  • Designed a technical solution for a fleet management system, involving data retrieval from vehicles' ODBII interface to data treatment and API exposure for third-party consumption.
  • Defined a technical roadmap and a technical recruitment plan.
  • Coordinated hardware development contractors and define low-level protocol for communicating with ODBII devices.
Technologies: Amazon Web Services (AWS), Docker, Node.js, On-board Diagnostics II (OBD-II)

Lead Developer

2011 - 2014
Novadiscovery
  • Implemented a knowledge representation and modeling solution for biology research teams using Java and semantic web technologies (RDF, OWL).
  • Developed a dynamic systems (differential equations) simulation engine for in-silico trials of possible pathology treatments.
Technologies: RDF, Java

Development Engineer

2008 - 2011
eFront
  • Designed and developed web-based reporting solutions for investment portfolio managers, including key metrics definitions and custom report building.
  • Contributed developing an in-house interpreted language for data mining and key indicators computing in C# and VB.net.
  • Provided expert support for consultant teams in implementing the solution for international clients (UK, Canada, UAE, and France).
Technologies: C#, Visual Basic .NET (VB.NET)

React web3 Component

https://github.com/dral/react-web3-component
I developed a demo set of React components for easily creating DApp interfaces. The library provides a binding of web3 to react components using react context and child functions for customized rendering. It handles Metamask privacy settings and connections to Geth nodes using WebSockets.
2004 - 2006

Master's Degree in Computer Science

Télécom ParisTech - Paris, France

2001 - 2004

Master's Degree in Engineering

École Polytechnique - Palaiseau, France

Libraries/APIs

React, Node.js, Web3.js, Socket.IO

Tools

Docker Swarm, NPM, Git, Zsh, Atom, Ethereum Plasma, Babel, Google Kubernetes Engine (GKE)

Frameworks

Redux, Express.js, OAuth 2, Truffle, React Native

Languages

ECMAScript (ES6), Java 8, Solidity, Visual Basic .NET (VB.NET), C#, Java, RDF, Java 9

Storage

MongoDB, PostgreSQL

Platforms

Docker, Blockchain, Ethereum, Zeppelin, MacOS, Amazon Web Services (AWS), Kubernetes, Visual Studio Code (VS Code)

Paradigms

Microservices

Other

Value Proposition, Lean Startups, Ethereum Smart Contracts, On-board Diagnostics II (OBD-II), Web 3.0, Encryption, Sidechains, OpenPGP

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