Silvio Clécio

Senior Software Engineer

Brazil13 yrs experience

AI EnabledHighly Stable

Key Highlights

Over 10 years of software engineering experience.
Expert in modern JavaScript/TypeScript stacks.
Passionate about performance and developer experience.

Stackforce AI infers this person is a Full-Stack Engineer with expertise in SaaS and Cybersecurity.

Contact

Skills

Core Skills

ReactNode.jsNext.js

Other Skills

JavaScriptTypeScriptReduxTanStack QueryZustandTailwindPostgreSQLCypressPlaywrightOpenAI APITailwind CSSREST APIsAgile methodologiesExpress.jsAWS

About

Senior Software Engineer with over 10 years of experience building APIs, UIs, and integrating AI into modern applications. I've developed scalable, user-focused products across industries like cybersecurity, e-commerce, and SaaS, delivering both robust backend services and seamless frontend experiences. I enjoy working with modern JavaScript/TypeScript stacks and bridging the gap between engineering and user experience. I also contribute to open source (10+ projects), and I'm passionate about improving performance, developer experience (DX), and cross-platform tooling. Key skills include: • Frontend: React, Next.js (SSR, SSG, CSR), Redux, TanStack Query (React Query), Zustand, React Hooks, React Context, Tailwind, CSS Modules • Backend: Node.js, Express.js, Next.js (API Routes), REST, GraphQL • Languages: JavaScript, TypeScript • Databases: PostgreSQL, MySQL, Supabase • AI & Automation: OpenAI API integration, prompt engineering • Testing: Jest, Playwright, Cypress • DevOps & Cloud: Docker, AWS (EC2, S3, Lambda), Hetzner, CI/CD with GitHub Actions & GitLab CI • Practices: Git, Agile/Scrum, code reviews, ESLint/Prettier, test-driven development (TDD) • Languages: English (Proficient), Portuguese (Native)

Experience

Securityscorecard

Senior Software Engineer

Feb 2022 – Present · 4 yrs 1 mo · United States · Remote

Maintained and evolved full-stack components of a cybersecurity platform using JavaScript, TypeScript, React, Redux, React Hooks, React Context, Next.js, Node.js, TanStack Query, Zustand, Tailwind, CSS Modules, and PostgreSQL, delivering scalable and secure features.
Won a company-wide hackathon by delivering a modern, responsive web app built with Next.js and integrated with OpenAI to automatically generate Instant Vendor Risk Reports for lead generation.
Built and optimized 20+ UI components, improving app load time by 40% and reducing user-reported issues by 30%.
Streamlined frontend–backend data flows, ensuring high performance, responsiveness, and usability across complex product workflows.
Integrated software components in a microservices architecture, enhancing modularity, testability, and deployment velocity.
Authored detailed documentation (Confluence) and implemented robust end-to-end tests with Cypress and Playwright, ensuring long-term platform reliability and CI stability.

JavaScriptTypeScriptReactReduxNext.jsNode.js+6

Wk technology

Full Stack Engineer

Apr 2021 – Jan 2022 · 9 mos · Santa Catarina, Brazil · Remote

Developed responsive and accessible UIs using React and Tailwind CSS, built and integrated REST APIs, and implemented browser-based speech recognition tools for enhanced interactivity.
Delivered multiple outsourced projects on time and within scope, collaborating closely with clients and teams using Agile methodologies and rapid iteration cycles.

ReactTailwind CSSREST APIsAgile methodologies

Duall sistemas

Full Stack Engineer

Mar 2013 – Apr 2021 · 8 yrs 1 mo · Mato Grosso, Brazil · Remote

Led the design and development of web and PWA applications with React, as well as REST APIs built with Node.js and Express.js to support order management, invoicing, and online sales workflows across multiple industries.
Spearheaded DevOps initiatives, managing AWS-hosted infrastructure, setting up CI pipelines, and creating custom CLI tools in Python and Rust for backups, networking diagnostics, and file compression.
Designed and maintained Chrome and Edge browser extensions, streamlining customer workflows and integrating with internal platforms.
Maintained and contributed to open-source projects under MIT, Apache, and LGPL licenses, promoting reusability and engineering quality across the team.

ReactNode.jsExpress.jsAWSCI pipelinesPython+1