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Fernando Eugenio

@fernandoeugenio

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Senior full-stack engineer specializing in backend systems, Node.js, and scalable microservices.

Brazil

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What I'm looking for

I seek senior backend/full-stack roles in agile teams where I can build secure, scalable microservices, mentor engineers, and deliver measurable performance improvements.

I am a senior full-stack engineer with five years of experience building scalable, high-performance backend systems using TypeScript, JavaScript, Node.js, and Go. I have delivered solutions for a leading logtech with over 900,000 users and a cryptocurrency DAO, focusing on reliability, security, and measurable performance gains.

At Fretebras I reduced freight creation time by 50% by developing a new Freight Form and engineered backend networks for over 1,000 fueling stations to securely process high-value transactions. I design REST API-based microservices, work closely with QA and DevOps for smooth deployments, and prioritize robust test coverage and fraud-reduction strategies.

I thrive in fast-paced, agile environments, mentor teams, and build systems that improve operational efficiency and predictability. I seek roles where I can continue designing secure, scalable backends and contribute to cross-functional teams driving measurable business outcomes.

Experience

Work history, roles, and key accomplishments

Current

Senior FullStack Engineer

Current

Fretebras

Feb 2022 - Present (4 years 4 months)

Designed and maintained backend systems connecting trucking logistics, developed a new Freight Form that reduced freight creation time by 50%, and supported scalable transaction processing across 1,000+ fueling stations while implementing fraud-reduction strategies.

NestJS TypeScript SQL MongoDB Redis Go AWS Microservices Distributed Systems

Senior Backend Engineer

Wisefy

Feb 2024 - Oct 2024 (8 months)

Developed backend microservices for a cryptocurrency fundraising SaaS, implementing REST API solutions for token/NFT creation and collaborating with QA/DevOps to ensure secure, reliable deployments in an agile environment.

NestJS TypeScript PostgreSQL MongoDB Kafka REST APIs CI CD Agile DevOps

Fullstack Software Developer

Freelancer

Feb 2021 - Feb 2022 (1 year)

Designed and implemented full-stack applications with robust backend integrations, building secure REST APIs using NestJS and Kafka for scheduling and payment processing to ensure high reliability and scalability.