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I am a software engineer and blockchain architect with a passion for building secure, scalable distributed systems. I focus on reducing maintenance and development costs, value thorough testing, and advocate for decoupled, clean code. I believe deployment should be simple, secure, and able to grow with changing requirements. I also embrace the idea that code is art and that a well-crafted program can be a masterpiece—so I strive for simplicity and elegance in everything I build. As a Linux and open‑source enthusiast, I’ve contributed to numerous free and open-source projects and maintain several of my own. Today I’m focused on network security, cryptography, and distributed computing technologies, translating complex concepts into practical, robust solutions.…I am a software engineer and blockchain architect with a passion for building secure, scalable distributed systems. I focus on reducing maintenance and development costs, value thorough testing, and advocate for decoupled, clean code. I believe deployment should be simple, secure, and able to grow with changing requirements. I also embrace the idea that code is art and that a well-crafted program can be a masterpiece—so I strive for simplicity and elegance in everything I build. As a Linux and open‑source enthusiast, I’ve contributed to numerous free and open-source projects and maintain several of my own. Today I’m focused on network security, cryptography, and distributed computing technologies, translating complex concepts into practical, robust solutions.

Mostafa S. Joo

Blockchain Developer, Project Manager, Developer, +5

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I am a software engineer and blockchain architect with a passion for building secure, scalable distributed systems. I focus on reducing maintenance and development costs, value thorough testing, and advocate for decoupled, clean code. I believe deployment should be simple, secure, and able to grow with changing requirements. I also embrace the idea that code is art and that a well-crafted program can be a masterpiece—so I strive for simplicity and elegance in everything I build. As a Linux and open‑source enthusiast, I’ve contributed to numerous free and open-source projects and maintain several of my own. Today I’m focused on network security, cryptography, and distributed computing technologies, translating complex concepts into practical, robust solutions.…I am a software engineer and blockchain architect with a passion for building secure, scalable distributed systems. I focus on reducing maintenance and development costs, value thorough testing, and advocate for decoupled, clean code. I believe deployment should be simple, secure, and able to grow with changing requirements. I also embrace the idea that code is art and that a well-crafted program can be a masterpiece—so I strive for simplicity and elegance in everything I build. As a Linux and open‑source enthusiast, I’ve contributed to numerous free and open-source projects and maintain several of my own. Today I’m focused on network security, cryptography, and distributed computing technologies, translating complex concepts into practical, robust solutions.

Available to hire

I am a software engineer and blockchain architect with a passion for building secure, scalable distributed systems. I focus on reducing maintenance and development costs, value thorough testing, and advocate for decoupled, clean code. I believe deployment should be simple, secure, and able to grow with changing requirements. I also embrace the idea that code is art and that a well-crafted program can be a masterpiece—so I strive for simplicity and elegance in everything I build.

As a Linux and open‑source enthusiast, I’ve contributed to numerous free and open-source projects and maintain several of my own. Today I’m focused on network security, cryptography, and distributed computing technologies, translating complex concepts into practical, robust solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Advanced

Persian

Fluent

Work Experience

Rust Developer at HexTrust

December 31, 2024 - July 23, 2025

Hex Trust is a fully-licensed digital asset custodian that provides solutions for protocols, foundations, financial institutions, and the Web3 ecosystem. I was part of the Cryptographic Research Department and working on Multi-Party Computation (MPC) algorithms based on CGGMP21 paper and YAO Garbled circuit.

Rust Developer at SafeNetwork

December 31, 2023 - July 23, 2025

The Safe Network is an open source, decentralized data storage and communications network that replaces data centers and servers with the spare computing resources of its users. I was part of a team to work and develop the consensus mechanism for the safe network based on ABBA protocol paper.

Project Manager / CTO at Coinhaven

December 31, 2022 - July 23, 2025

Coinhaven was a project aimed at building a cryptocurrency exchange platform to simplify buying Bitcoin and other blockchain assets with various fiat currencies. I was responsible for developing the core microservices for the platform, including the Crypto-Wallet, Crypto-Deposit, Crypto-Withdraw, and Peer-to-Peer trading modules.

Blockchain Architect / Team Lead at Maxonrow

December 31, 2021 - July 23, 2025

Maxonrow is the sole main chain service provider in the world to offer real-name identity verification for KYC process and AML safety measures. As blockchain architect, I was responsible for designing and developing the Maxonrow blockchain. Maxonrow was built on top of Cosmos-SDK. We utilized GDPoS (Governed Delegated Proof of Stake) as a consensus mechanism to enhance the security and scalability of the blockchain.

Senior Software Engineer / Team Lead at Finterra Technology

December 31, 2019 - July 23, 2025

Finterra is a cloud based financial services platform designed to harness both individual and corporate financial needs in a seamless and integrated platform. Our team had a mission to design and implement the Gallactic blockchain to address Waqf or Islamic endowment using blockchain and smart contract technologies.

Senior Software Engineer at Hexosys

December 31, 2017 - July 23, 2025

Hexosys has been providing outstanding hardware and software design and implementation services to the high-technology community in the USA since 2007. I was part of the High Speed Ethernet Protocol Analyzer in Hexosys. I had this opportunity to learn about Storage and Networking protocols.

CTO & Co-Founder at Pactus Blockchain

January 1, 2024 - Present

Led technology strategy as CTO and co-founder; oversaw distributed architecture and security for the Pactus blockchain; steered product development and collaboration with distributed teams.

Rust Developer at HexTrust

January 1, 2023 - January 1, 2025

Developed core microservices for the crypto custody platform; contributed to crypto-wallet, deposits, withdrawals modules; focused on security and performance in distributed systems.

CTO at Coin Haven Germany

January 1, 2021 - January 1, 2022

Led architecture and development of a crypto exchange platform; implemented crypto-wallet integration, deposits, withdrawals, and peer-to-peer trading features.

Senior Software Engineer / Team Lead at Maxonrow

January 1, 2019 - January 1, 2021

Led blockchain core development; contributed to Cosmos-SDK based platform; implemented GDPoS consensus to improve security and scalability.

Senior Software Engineer / Team Lead at Fintera Technologies

January 1, 2017 - January 1, 2019

Led fintech platform development, focusing on cloud-based financial services and secure architecture for a seamless, integrated platform.

Senior Software Engineer at Hexosys

January 1, 2010 - January 1, 2017

Designed and implemented storage and networking protocol analysis tools; contributed to high-speed Ethernet protocol analysis and related tooling.

CTO & Core Developer at Pactus Blockchain

January 1, 2024 - Present

Pactus is a pure blockchain protocol secured by a novel Solid-State Proof of Stake consensus mechanism. Led 15+ developers across multiple areas to deliver products: Pactus Blockchain (Raspberry Pi to Windows), Pactus Explorer, Pactus Wallet, Pactus Guardian Bot, and cross-chain/bridging components. Remote.

Team Lead at Coin Haven Germany

January 1, 2021 - January 1, 2022

Led the development of a cryptocurrency exchange platform and built core microservices including Crypto-Wallet, Crypto-Deposit, Crypto-Withdraw, and Peer-to-Peer trading. Worked remotely from 2021 to 2022.

Senior Software Engineer / Team Lead at Finterra Technology

January 1, 2017 - January 1, 2019

Cloud-based financial services platform; designed and implemented the Galactic Blockchain (Waqf/Islamic endowment) using blockchain tech and smart contracts. Built on Cosmos-SDK with GDPoS as the consensus mechanism to enhance security and scalability.

Rust Developer at Safe Network Scotland

January 1, 2022 - January 1, 2023

Contributed to the Safe Network consensus mechanism; part of a team implementing ABBA protocol-based consensus. Remote collaboration.