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I'm a software engineer with over four years of experience building scalable systems and user-facing applications using Node.js, React, TypeScript, and PostgreSQL. I’m passionate about crafting reliable APIs and engaging interfaces that power meaningful products. I thrive in fast-paced environments where I can collaborate closely with teams and translate complex data into usable solutions. I'm excited about using technology to drive positive global change.…I'm a software engineer with over four years of experience building scalable systems and user-facing applications using Node.js, React, TypeScript, and PostgreSQL. I’m passionate about crafting reliable APIs and engaging interfaces that power meaningful products. I thrive in fast-paced environments where I can collaborate closely with teams and translate complex data into usable solutions. I'm excited about using technology to drive positive global change.

Matheus Hammarstrom

Full Stack Developer, Back-End Developer, Web Developer, +2

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I'm a software engineer with over four years of experience building scalable systems and user-facing applications using Node.js, React, TypeScript, and PostgreSQL. I’m passionate about crafting reliable APIs and engaging interfaces that power meaningful products. I thrive in fast-paced environments where I can collaborate closely with teams and translate complex data into usable solutions. I'm excited about using technology to drive positive global change.…I'm a software engineer with over four years of experience building scalable systems and user-facing applications using Node.js, React, TypeScript, and PostgreSQL. I’m passionate about crafting reliable APIs and engaging interfaces that power meaningful products. I thrive in fast-paced environments where I can collaborate closely with teams and translate complex data into usable solutions. I'm excited about using technology to drive positive global change.

Available to hire

I’m a software engineer with over four years of experience building scalable systems and user-facing applications using Node.js, React, TypeScript, and PostgreSQL. I’m passionate about crafting reliable APIs and engaging interfaces that power meaningful products.

I thrive in fast-paced environments where I can collaborate closely with teams and translate complex data into usable solutions. I’m excited about using technology to drive positive global change.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

Portuguese

Fluent

English

Fluent

Work Experience

Software Engineer at Operanex

October 1, 2024 - October 28, 2025

Developed and delivered real-time dashboards that gave mining operators instant visibility into truck performance and bottlenecks, reducing average cycle time by 40% across multiple sites. Integrated HR software with AI capabilities to assist recruiters in writing personalized emails and extracting candidate information from resumes, improving outreach efficiency. Designed backend systems in Node.js/TypeScript with scalable APIs using Drizzle ORM; implemented CI/CD pipelines for production-grade deployments. Created Python algorithms to analyze trucking cycles (loading→queueing→offloading) surfacing actionable throughput metrics. Collaborated with founders and field engineers to translate complex data into reliable systems.

Software Engineer at Poliedro

September 1, 2024 - September 1, 2024

Designed and implemented backend services and APIs using NestJS (Node.js, TypeScript), supporting educational platforms with over 150k active users. Contributed to frontend performance optimization and internal monitoring, improving platform responsiveness and reliability. Worked with product teams to develop data integrations and automated reporting systems, reducing manual workload and improving data quality. Drove performance improvements enabling a 70% increase in traffic without downtime, maintaining engagement and scalability. Helped standardize CI/CD and testing practices (Jest), ensuring consistent, safe deployments.

Junior Backend Developer at Poliedro

January 1, 2023 - January 1, 2023

Developed and maintained backend endpoints, background workers, and automation tools for production systems. Optimized SQL/NoSQL queries, reducing latency and improving infrastructure efficiency. Assisted in debugging live systems and ensuring high uptime for end users.