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braqzen Doe

@braqzendoe

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Backend and distributed systems engineer building Rust services for blockchain infrastructure and developer tooling.

Portugal

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What I'm looking for

I’m looking for a team where I can build Rust-based backend services and blockchain infrastructure—shipping APIs, observability, and developer tooling that make complex systems reliable and easy to integrate.

I’m a backend and distributed systems engineer focused on Rust-based services, blockchain infrastructure, APIs, observability, and developer tooling. I’ve built stateless, event-driven systems and production-grade infrastructure where reliability, performance, and visibility matter.

At Spire Labs, I delivered a “Stateless transaction routing service” using Redis queues and background workers, plus an event-driven transaction batching service integrating block builders (EIP-7702). I also owned cross-service observability to support monitoring, debugging, product insights, and alerting.

My work spans smart contracts and developer experience: I’ve shipped oracle and on-chain order-book tooling (including an SDK and CLI), led development of Fuel’s application repository for its Sway DSL, and built cross-team integrations across bridge, compiler, libraries/standards, wallet, and SDK. Earlier, I built Python-based smart home automation software for lighting, heating, and ventilation.

Experience

Work history, roles, and key accomplishments

Backend & Distributed Engineer

Spire Labs

Aug 2024 - Dec 2025 (1 year 4 months)

Built a stateless transaction routing service using Redis queues and background workers to fan out requests across multiple preconfirm providers. Developed event-driven transaction batching with block builders (EIP-7702) and implemented cross-service observability for monitoring, debugging, insights, and alerting.

Rust Tokio Distributed Systems OpenTelemetry

Rust Contract & SDK Engineer

Independent Engineer

Mar 2024 - Aug 2024 (5 months)

Built an oracle contract with priority-based fallback across multiple integrations. Designed and implemented an SDK and CLI for a redesigned on-chain order-book contract, and contributed technical writing on modular smart contract design.

Rust Smart Contract Development Solidity SDK Development CLI Development

Rust & Smart Contract Engineer

Fuel Labs

Apr 2022 - Jan 2024 (1 year 9 months)

Created and led development of Fuel’s application repository for its Sway DSL. Drove cross-team integrations across Fuel’s bridge, compiler, libraries/standards, wallet, and SDK, and supported developer enablement through documentation and end-to-end QA.

Rust Compiler Developer Documentation

Smart Home Automation Engineer

Atamate

May 2018 - May 2022 (4 years)

Built smart home automation software for lighting, heating, ventilation, and other property system controls. Delivered automation logic that supports end-to-end operation of residential property features.

Python home automation Ventilation Automation