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Naftaly Junior

@naftalyjunior

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Full-stack engineer specializing in React, Flutter, Python, CI/CD, and applied AI/LLMs.

Brazil

Message

What I'm looking for

I seek roles where I can lead front-end and mobile development, improve CI/CD and scalability, work with AI/LLMs, and grow products in a collaborative, impact-driven team.

I am a full-stack engineer with 5+ years building scalable web and mobile applications across fintech, HRTech, and SaaS. I specialize in React (JavaScript, CSS, HTML), Flutter (Dart), and Python (Django, FastAPI), and I have driven measurable improvements in onboarding, conversion, and app store ratings.

I have founded and run a boutique software house delivering mobile and web solutions, rebuilt and improved multiple products for performance and maintainability, and designed scalable APIs and integrations handling millions of requests daily. I also redesigned CI/CD pipelines and integrated payment gateways to expand product capabilities.

I mentor and coach developers, enjoy going deep on front-end and mobile, and am actively exploring applied AI and LLMs while developing my own SaaS product using React, Flutter, Python, Node.js, and AWS.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

NafTech Solutions

Jan 2025 - Present (10 months)

Founded and operated a boutique software house delivering web and mobile solutions; rebuilt and maintained products (Gooday, Goldpass) improving performance and maintainability while developing a new SaaS product.

Flutter React Python AWS CI CD fastAPI Mobile Development

Software Engineer

Woke

Jan 2024 - Jan 2025 (1 year)

Built and optimized recruitment platforms for Brazil and the U.S., increasing onboarding by 80% and sales conversion by 36% through scalable APIs, performance improvements, and payment integrations.

React Kotlin Spring Boot Redis Elasticsearch Stripe GitHub Actions AWS CodeBuild

Software Engineer

Grupo Nexxees

Jul 2022 - Jan 2024 (1 year 6 months)

Developed Flutter mobile apps and Python/Django services, improving UX and stability that led to a 70%+ increase in app store ratings and delivering reusable Kotlin/Dart libraries.