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Matheus Lira
From Brazil 11:43 PM (GMT-03:00)
$35/hr or $70,000/yr

Active 1 hour ago


Member since Oct 2026

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Senior Software Engineer

Full-Stack Engineer
Available for hire
Years of experience
10+ years
Experience level
Senior
Available from
27 Oct 2026
Download Resume / CV

I’m a Senior Full-Stack Developer with 10 years of experience building web and mobile applications using React, TypeScript, Node.js, and Python. I've worked across different industries, building scalable platforms, API integrations, automation tools, and data-driven applications. What makes me unique is my ability to understand the bigger picture, solve complex problems, and take ownership of projects from start to finish. I'm looking for a long-term remote opportunity where I can work with a talented team, tackle interesting challenges, and build products that make a real impact.

Skills

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Languages

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Employment History

Senior Software Engineer at avanzzada 2024 - 2026
Designed and built agentic workflows orchestrating n8n, Claude, and Airtop to automate multi-step tasks and browser-based actions. Integrated the GPT API to automatically summarize chat history, giving support agents fast context on each conversation and reducing time-to-response. Developed a ticket reprioritization system using NLP-based emotion detection to surface high-urgency or at-risk tickets and route them accordingly. Combined LLMs, workflow automation, and NLP into practical internal tools focused on measurable support-team efficiency.
Senior Full Stack Engineer at Uber 2023 - 2024
Improved frontend state management by introducing the React Context API, reducing prop drilling and making shared state easier to reason about. Helped on the migration of backend services from GraphQL to gRPC in a Go (Golang) codebase, improving service-to-service communication and API performance. Redesigned key application flows to streamline the user experience and align the frontend with the updated backend architecture. Collaborated across backend and frontend teams to coordinate the migration and ship changes incrementally with minimal disruption.
Software Engineer at IQVIA 2022 - 2023
Senior Full Stack Engineer working on a configurable white-label platform for a global leader in healthcare and life sciences technology. Built and maintained a multi-tenant white-label platform, delivering a single codebase that could be rebranded and configured per client. Developed responsive, component-driven front-ends in React, focused on reusability, accessibility, and consistent UX across tenants. Implemented back-end services and APIs in Laravel (PHP), covering business logic, data handling, and integrations. Used Form.io to design dynamic, schema-driven forms and workflows, enabling non-technical teams to configure data capture without code changes. Collaborated across product, design, and engineering to ship features iteratively and keep the platform scalable as new clients were onboarded
Frontend Developer at Livelo Brasil 2021 - 2022
As a Senior Front-end Developer of a cross-functional team, led the development of a React-based Design System library collaborating with other engineers and designers to define feature requirements. Responsibilities included architecting and planning the Design System pieces and artifacts, developing new components to high-quality standards, improving the accessibility of the components, writing unit tests, fixing bugs, creating changelogs and migration guides, mentoring junior and mid-level developers, conducting code reviews, and resolving cross-team blockers. Faced the challenge of creating a flexible library of components that could be used and adapted in all of the company's products. Utilized a mono repo architecture to improve the time of implementing features in multiple packages simultaneously. Overall, made significant contributions to the Page 2 of 4 company's design system by prioritizing user experience, ensuring component consistency, and promoting best practices for code quality.
Tech Lead at avanzzada 2021 - 2021
Worked in a global team as a tech lead, leading the development of a crypto asset management platform, utilizing extensive knowledge in designing and implementing the front-end, back-end, and server infrastructure. Mentored and guided junior and mid-level developers, while collaborating with the project management team to prioritize tasks and ensure optimal work distribution. Additionally, played a pivotal role in the migration of an Angular front-end application into a modern React-based stack, defining and designing the new system architecture featuring a modern Next.js application. Responsible for setting up the CI/CD pipeline and testing framework, ensuring seamless deployment and quality assurance across the entire codebase. Moreover, demonstrated exceptional leadership skills in mentoring several developers to maintain consistent and high programming quality within the technical team. Established standards for workflows and testing within company projects and contributed to the committee responsible for setting project standards and testing guidelines. Collaborated with senior management to define efficient workflows and good practices, resulting in increased productivity and improved project outcomes
Frontend Engineer at Evenyx 2019 - 2020
As the Senior front-end engineer, created a new architecture for the company's event ticket management SaaS application using Next.js, Tailwind CSS, and established the company's first CI/CD process in AWS CodePipeline. Integrated the authentication module with Auth0, enabling secure user authentication and authorization. Responsibilities included front-end application architecture, code review, and pair programming with other developers. Improved team efficiency by utilizing metrics such as response time, uptime, test coverage (both unity and end-to-end), pipeline automation, and others. The score improved from 85% to 97.65%, leading to a significant increase in customer satisfaction from 3.1 to 4.2.
Software Engineer at Agência Resulttado 2018 - 2019
As a member of an 8-person team, gained valuable experience working in a diverse team while developing new features and scaling a B2B SaaS application that helps organizations track leads with sales opportunities. Faced challenges with code maintainability and knowledge transfer, as the application was developed by a third-party company. However, successfully overcame these obstacles by migrating legacy code to a modern implementation. In addition to these accomplishments, developed an in-house OpenID Connect provider using Node.js to authenticate and authorize users. This solution was necessary because third-party services such as Okta and Auth0 were deemed too expensive for the business model at the time, and AWS Cognito did not offer all the necessary features.
Software Engineer at FAINTVISA 2017 - 2018
As a key member of the team, designed a multi-tenant solution to support thousands of clients at multiple levels of customization. Responsible for creating a service in Node.js and GraphQL to enable federated API access. Implemented Trunk-Based Development to increase front-end development speed and leveraged the scalability of React to naturally grow the web application. Managed a large, unstable codebase in React.js and Node.js and introduced a new data flow based on immutable architecture. This ensured the correct management of business models and made the codebase ready to add new features over time. Maintained a technical roadmap to incrementally establish the project, while collaborating closely with a cross-functional team using agile techniques for sync-ups and follow-ups.

Education

Bachelor of Technology - BTech at UNINASSAU 2023 - 2025
Bachelor of Technology at Estácio 2020 - 2021