Description

I help companies build reliable Rust software for backend systems, embedded Linux, blockchain infrastructure, and security-sensitive products.

I am a Senior Rust Software Engineer with experience delivering production software across Web3, automotive, embedded systems, and self-hosted infrastructure. I usually work on Rust backend services, async APIs, gRPC/GraphQL integrations, Substrate/Polkadot SDK development, custom pallets, runtime upgrades, blockchain node automation, Linux-based platforms, Dockerized services, and secure authentication flows with WebAuthn/passkeys, JWT, TLS/mTLS, HSMs and cryptographic signatures.

What makes me different is that I can move comfortably between backend architecture, low-level Linux, blockchain infrastructure, networking, DevOps, and security. I also use AI deeply and responsibly in my workflow for research, planning, debugging, code review, automation and documentation, while validating the output and avoiding low-quality AI-generated code.

Typical deliverables I handle include Rust microservices, backend APIs, CLI tools, blockchain tooling, Substrate pallets, node automation, embedded Linux integrations, CI/CD improvements, observability with Prometheus/Grafana, and technical problem solving for complex systems.

Industry field of expertise

Languages

Spanish
Native or bilingual
Catalan
Conversational
English
Fluent

Workplace preferences

Can work on-site

Terrassa (up to 20km)

Kunveno
Senior Software Engineer
July 2025 - Today (11 months)
• • Develop blockchain and backend solutions based on Polkadot SDK, including runtime logic, pallets, and decentralized modules.
• • Build Rust backend middleware for onboarding Web2 users into Web3 applications and blockchain-based workflows.
• • Design and maintain smart contract development environments for rapid prototyping, testing, and integration.
• • Develop ink! smart contracts and integrate contract-layer functionality with runtime and backend components.
• • Use AI-assisted research, planning, debugging, and implementation review as part of a responsible engineering workflow.
Rust Bash Linux Docker Blockchain
Virto
Senior Software Engineer - Rust Blockchain Engineer
March 2025 - Today (1 year and 3 months)
• • Develop Rust-based Polkadot pallets and maintain parachain runtimes aligned with Polkadot SDK.
• • Implement decentralized authentication flows using passkeys, WebAuthn, JWT, and non-custodial identity concepts.
• • Build Rust tooling for blockchain automation, wallet interaction, transaction signing, and runtime testing.
• • Use subxt for typed interaction with Substrate-based chains and automated extrinsic submission.
• • Work on runtime upgrade flows, proof-of-concept implementations, and integration testing across blockchain components.
• • Contribute to FOSS projects across the Polkadot ecosystem, including Parity, Encointer, and ink! Alliance.
Rust Linux GitHub Continuous integration Blockchain
G6
Senior OS Engineer
February 2024 - March 2025 (1 year and 1 month)
• • Designed and built a customized GNU/Linux distribution based on Debian using Live Build.
• • Managed blockchain nodes across distributed infrastructure, focusing on availability, reliability, and security.
• • Developed Rust and Linux tooling for blockchain interaction, extrinsics automation, and operational workflows.
• • Designed and deployed self-hosted CI/CD solutions to improve release and DevOps efficiency.
• • Implemented OS testing with QEMU/KVM to validate system stability across environments.
Debian Rust Linux Blockchain Back-End development