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Software Engineer driven by a simple purpose: turning real problems into solutions that make a difference in people's lives. I build robust systems balancing performance, scalability, and cost, with strong experience in Go, AWS Lambda, microservices, Node.js, and Terraform. I go beyond the code: I understand the business, the people behind the systems, and the impact of every technical decision. I take full ownership of my scope and use AI tools (Claude, Cursor) to amplify my delivery capacity.…Software Engineer driven by a simple purpose: turning real problems into solutions that make a difference in people's lives. I build robust systems balancing performance, scalability, and cost, with strong experience in Go, AWS Lambda, microservices, Node.js, and Terraform. I go beyond the code: I understand the business, the people behind the systems, and the impact of every technical decision. I take full ownership of my scope and use AI tools (Claude, Cursor) to amplify my delivery capacity.

Lucas Dantas de Oliveira

Software Engineer, Back-End Developer, DevOps Developer, +2

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Software Engineer driven by a simple purpose: turning real problems into solutions that make a difference in people's lives. I build robust systems balancing performance, scalability, and cost, with strong experience in Go, AWS Lambda, microservices, Node.js, and Terraform. I go beyond the code: I understand the business, the people behind the systems, and the impact of every technical decision. I take full ownership of my scope and use AI tools (Claude, Cursor) to amplify my delivery capacity.…Software Engineer driven by a simple purpose: turning real problems into solutions that make a difference in people's lives. I build robust systems balancing performance, scalability, and cost, with strong experience in Go, AWS Lambda, microservices, Node.js, and Terraform. I go beyond the code: I understand the business, the people behind the systems, and the impact of every technical decision. I take full ownership of my scope and use AI tools (Claude, Cursor) to amplify my delivery capacity.

Available to hire

Software Engineer driven by a simple purpose: turning real problems into solutions that make a difference in people’s lives. I build robust systems balancing performance, scalability, and cost, with strong experience in Go, AWS Lambda, microservices, Node.js, and Terraform.

I go beyond the code: I understand the business, the people behind the systems, and the impact of every technical decision. I take full ownership of my scope and use AI tools (Claude, Cursor) to amplify my delivery capacity.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

Portuguese

Fluent

English

Advanced

Work Experience

Mid-Level Software Engineer at Personare.com.br

June 1, 2022 - Present

Architected and led the migration of ~15 critical payment/cart APIs from a PHP monolith to microservices in Go + AWS SAM/Lambda, estimating 30% reduction in infrastructure costs and reducing latency from ~3 seconds to a few milliseconds, impacting millions of users. Led the migration of the city Invoice (Nota Fiscal) system integration to the national system, modernizing a critical billing process. Mapped and resolved security vulnerabilities in the website and internal administrative systems. Developed using Go, Node.js/TypeScript, AWS CloudFormation/SAM, MySQL, PostgreSQL, Docker, and Terraform, and used AI agents (Claude, Cursor) to increase productivity.

Software Developer at Mundiware

September 1, 2018 - June 1, 2022

Developed systems and web applications, working on medium and large-scale projects with a focus on code quality and software engineering best practices.

Web Design Technician at Mundiware

November 1, 2017 - September 1, 2018

Developed and maintained web interfaces, created layouts, and provided technical support for digital projects.

Freelance Web Developer at Self-employed

September 1, 2015 - June 1, 2022

Built websites and web applications for clients across different segments with full autonomy over project management, deadlines, and deliverables.