Lucas de Oliveira

Valid

Front-end Software Engineer (September 2025 - Current)

• Executed software engineering and continuous evolution for a B2B digital security web platform handling thousands of monthly requests. Responsible for designing and implementing a Micro Frontends architecture using React and TypeScript, integrating APIs, and developing custom hooks to encapsulate complex business logic and ensure ecosystem scalability.

• Relational data modeling and integration using PostgreSQL and Drizzle ORM, architecting client-side reactive state propagation to mitigate data inconsistency and rendering loops.

• Development of unit tests with Vitest for front-end components, integrated into CI/CD pipelines to ensure continuous quality and prevent regressions.

• Integration with Identity and Access Management (IAM) solutions, utilizing JWT for the implementation of authentication, authorization, session management, and private route protection.

• Structuring of isolated development environments with Docker, segmenting front-end and back-end scopes.

• Utilization of Trunk-Based Development with Git, reducing branch conflicts by over 60% and accelerating deliveries with automated validations.

• Direct collaboration in architecture design and technical decision-making within cross-functional teams, defining strategies for scalability, security, and clean code standards for web applications.

• Performance in cloud infrastructure and DevOps practices utilizing Google Cloud Platform (GCP), including management of secrets and environment variables, configuration of CI/CD pipelines, monitoring of applications and services, and administration of development and production environments.

Afixcode

Full Stack Developer (January 2024 - September 2025)

• Development and maintenance of a responsive web productivity system for routine management, focusing on delivering dynamic and interactive interfaces for a high-volume user base using HTML, CSS, SASS, JavaScript, and jQuery.

• Active participation in team code reviews and project planning.

• Team collaboration in brainstorming and creating new ideas for system components and features.

• Utilization of Git for version control, ensuring efficient management of changes and updates.

• Task and backlog management with Azure Boards, prioritizing activities to optimize the development flow, ensuring efficiency and software quality.

• Performed regular check-ins to specific branches, implementing new features and bug fixes that increased system efficiency by 20%.

• Debugging and fixing critical bugs in the productivity system, including data synchronization issues and layout failures on smaller screens, resulting in a smoother user experience.

Trainee (September 2022 - December 2023)

• Support in the development and maintenance of responsive internal web systems used by other departments and productivity platforms, ensuring stable, performing routine tasks and optimized functionality across different devices.

• Assistance in developing and creating web interfaces with HTML, CSS, and JavaScript, as well as resolving impactful interface bugs.

• Support in developing and creating components with C#, JavaScript and .NET Framework, as well as fixing critical bugs in data request processes.