José Molina
Blockchain Engineer at R0GUE
Jaén, Andalusia, Spain
Summary
🤩
Rockstar🎓
Top SchoolJosé Molina is a blockchain engineer with 11+ years building correct, secure, and resilient systems across finance-grade and research environments, from CERN to production parachains. He has led end-to-end parachain deliveries (Watr, Mythos), architected staking and account abstraction solutions for Substrate, and co-authored Polkadot SDK best practices while supervising code reviews across 25 ecosystem teams. Comfortable across the stack, he contributes to both backend blockchain primitives (Polkadot SDK, bitcoinlib) and front-end tooling (polkadot-js/apps), adding parachain integrations and explorer enhancements. His experience spans Ethereum, Bitcoin, Lightning, Monero and many other chains, plus serverless and microservice backends in production. Based in Jaén, Spain, he combines academic training in blockchain smart contracts with hands-on operational expertise in node management and protocol-level improvements like RFC0097 for fast unbonding. Notably, he balances deep protocol work with UX-focused improvements—bridging low-level consensus concerns and developer-facing tooling.
11 years of coding experience
10 years of employment as a software developer
Master's degree Blockchain Smart Contracts and Cryptoeconomy, Master's degree Blockchain Smart Contracts and Cryptoeconomy at Universidad de AlcaláBachelor's degree Computer Science, Bachelor's degree Computer Science at Universidad de Jaén
English, Spanish, French
Stackoverflow
539reputation
174kreached
10answers
0questions
Github Skills (35)
substrate10
javascript10
python10
databases10
bitcoin10
bitcoins10
ui-design10
polkadot-js10
blockchain10
cumulus10
rust10
para10
polkadot10
react10
database10
Programming languages (11)
Github contributions (5)
paritytech/polkadot-sdk
Aug 2023 - Mar 2025
The Parity Polkadot Blockchain SDK
Role in this project:
Backend Developer
Backend DeveloperContributions:15 reviews, 7 PRs, 3 pushes in 1 year 6 months
Contributions summary:José primarily contributed to the backend of the Polkadot SDK, specifically focusing on parachain and Substrate-related components. Their work involved addressing issues in the `ExportGenesisState` command, enhancing benchmark functionality within the `pallet-nfts` module, and correcting weight registration in `pallet-collator-selection`. Furthermore, they contributed to improving debugging information for `StorageWeightReclaim` and adding an extra constant to the `pallet-collator-selection`. Their contributions showcase a deep understanding of the codebase and the ability to resolve complex issues related to blockchain functionality.
blockchaincumuluspolkadotsubstrate
polkadot-js/apps
Oct 2023 - Jan 2025
Basic Polkadot/Substrate UI for interacting with a Polkadot and Substrate node. This is the main user-facing application, allowing access to all features available on Substrate chains.
Role in this project:Front-end Developer
Front-end DeveloperContributions:10 reviews, 9 PRs, 21 comments in 1 year 2 months
Contributions summary:José primarily focused on enhancing the user interface of the Polkadot/Substrate UI application. Their contributions included adding support for new parachains like Watr, Mythos, and Muse, which involved integrating specific configurations, logos, and RPC endpoints. The user also worked on integrating proof size summaries and block interval querying functionality within the explorer pages, demonstrating a focus on providing detailed blockchain information within the UI.
substrateblockchainwalletchainssubstrate-node
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.