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Walison Fernandes

@walisonfernandes

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Senior Fullstack Developer at Datainfo, who cut an Angular app’s initial bundle by 77% and builds Java approval flows.

Brazil

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What I'm looking for

I'm available for fully remote work, on a PJ or CLT basis.

At Datainfo, I led the migration of a legislative and administrative system to Angular 15 with PrimeNG and TailwindCSS. I restructured Lazy Loading and reduced the initial bundle by 77%.

I also develop Java and Spring Boot back-end features, including approval flows, permissions and profiles migration, and business rules. After senior developers left the team, I became its front-end technical reference.

At 4MDG (Plataforma de Gestão de Cadastros), I guided an incremental upgrade from Angular 10 to Angular 17 using Standalone Components, improving initial load performance by 40%.

At Mirante Tecnologia, I migrated legacy VB6 and .NET systems to Angular for SICOOB and Bancobrás projects, and worked with Java and SQL to optimize complex reports and improve application performance by 50%. Earlier, at LightBase, I developed SPAs for PGFN that reduced manual work by about 40% and created a responsive component library.

Experience

Work history, roles, and key accomplishments

Current

Desenvolvedor Fullstack (Angular & Java)

Current

Datainfo

Feb 2025 - Present (1 year 8 months)

Liderou a migração de sistema legado para Angular 15 com PrimeNG e TailwindCSS em sistema legislativo e administrativo (ALRS). Reestruturou o Lazy Loading e reduziu o bundle inicial em 77% (de 10,5 MB para 2,35 MB).

Angular TypeScript PrimeNG Tailwind Java Spring Boot Lazy Loading Web Performance Legacy Migration

Desenvolvedor Front-end Angular

4MDG

Nov 2023 - Feb 2025 (1 year 3 months)

Conduziu a atualização incremental de Angular 10 para Angular 17 com Standalone Components. Melhorou em 40% a performance de carregamento inicial da aplicação.

Angular TypeScript Standalone Components Web Performance

Desenvolvedor Fullstack (Angular & Java)

Mirante Tecnologia

May 2022 - Nov 2023 (1 year 6 months)

Migrou sistemas legados em VB6 e .NET para Angular em projetos do SICOOB e do Bancobrás. Atuou como fullstack com Java e SQL, otimizando relatórios complexos e ampliando em 50% a performance das aplicações.

Angular Java SQL Legacy Migration VB6 .NET Web Performance

Desenvolvedor Front-end Angular

LightBase

Mar 2021 - May 2022 (1 year 2 months)

Desenvolveu SPAs para a PGFN que reduziram cerca de 40% do trabalho manual dos servidores. Criou uma biblioteca de componentes responsivos (Design System).

Angular TypeScript Design Systems Componentes Responsivos SPA