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Matheus Soares

@matheussoares

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Senior full-stack engineer specialising in Ruby on Rails, React and AI-driven solutions.

Brazil

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What I'm looking for

I seek a role building scalable, maintainable products where I can apply full-stack skills, integrate AI, lead technical improvements, and work in collaborative, agile teams.

I am a Senior Software Engineer with 8+ years of experience building scalable full-stack applications using Ruby on Rails and React. I combine strong architectural skills with a Master's in Machine Learning to integrate AI into production systems and improve product value.

I have partnered with US-based companies to optimize system performance, lead upgrades, and reduce technical debt by applying SOLID principles and design patterns. I enforce TDD to raise code quality and reliability across legacy and new features.

My background includes performance optimizations, database query refactoring, background-job improvements, and custom third-party integrations such as a Microsoft Outlook sync replacement. I have delivered measurable improvements like large page-load time reductions and avoided costly rewrites through strategic upgrades.

I work effectively with stakeholders and cross-functional teams, providing technical leadership during scope negotiation and driving CI/CD and cloud-native practices (AWS, Docker, ArgoCD). I am motivated to build resilient, maintainable systems that scale and deliver clear business impact.

Experience

Work history, roles, and key accomplishments

Current

Full Stack Software Engineer

Current

HatchWorks

Nov 2022 - Present (3 years 1 month)

Spearheaded architectural improvements applying SOLID and design patterns to reduce technical debt, integrated AI models to automate workflows, and enforced TDD to raise code quality across legacy and new features.

Ruby on Rails React TypeScript PostgreSQL Redis AWS ArgoCD ELK TDD

Full Stack Software Engineer

BairesDev

Mar 2021 - Nov 2022 (1 year 8 months)

Led a Ruby on Rails upgrade strategy to improve security and performance, optimized queries and background jobs cutting page load times by up to 15 seconds, and implemented a custom Outlook integration to reduce operational costs.

Ruby on Rails React Python Flask MongoDB SQL Server PostgreSQL AWS Performance Optimization

Ruby on Rails Developer

Ruptiva

Jan 2018 - Mar 2021 (3 years 2 months)

Developed scalable full-stack applications and microservices with Ruby on Rails, VueJS and Python, collaborated with UX/UI to deliver responsive interfaces, and provided technical leadership during scope negotiations.

Ruby on Rails Python Django MongoDB PostgreSQL Azure Elasticsearch

Software Developer System Analyst

RD Station

Apr 2017 - Dec 2018 (1 year 8 months)

Built custom CRM and marketing platform features with complex third-party API integrations, used Ruby on Rails metaprogramming for adaptable layouts, and resolved critical production issues to ensure stability.

Ruby on Rails Angular MongoDB SQL Server AWS ELK API Integration

Software Analyst

Public Defenders of State of Minas Gerais

Jul 2015 - Jun 2017 (1 year 11 months)

Maintained and enhanced the internal defenders' management system, introduced features to support public service operations, and improved UX and data consistency through performance monitoring.

Ruby on Rails AngularJS SQL Server PHP Elasticsearch