NJNaftaly Junior
@naftalyjunior
Senior software engineer focused on front-end React/TypeScript and product impact.
BrazilWhat I'm looking for
I am a senior software engineer with 5+ years shipping user-facing web and mobile products, specializing in responsive UI with React and TypeScript and measurable product impact such as +80% onboarding and +36% conversion. I lead cross-functional delivery, optimize performance, and own release pipelines using GitHub Actions and AWS to accelerate shipping and reduce regressions.
I founded and consult at NafTech Solutions, led delivery across multiple client projects with strong retention and revenue outcomes, rebuilt mobile stacks with Flutter and FastAPI, and consistently reduced latency and deployment time through engineering and tooling improvements. I mentor engineers and build modular components and admin experiences that empower non-engineers to publish content faster.
Experience
Work history, roles, and key accomplishments
Software Engineer
NafTech Solutions
Jan 2025 - Present (1 year)
Led delivery across 8 client projects, achieving 60% client retention and R$150K revenue; built React back-office tools that reduced content publishing time by 200% and improved page load time by 23%.
Software Engineer
Woke
Jan 2024 - Jan 2025 (1 year)
Built and optimized user-facing flows for a recruitment platform, increasing onboarding by 80% and sales conversion by 36%; reduced API latency 31% with Redis caching and Elasticsearch indexing.
Software Engineer
Grupo Nexxees
Jul 2022 - Jan 2024 (1 year 6 months)
Shipped UX and stability improvements that raised app store ratings ~2.8 to ~4.7 and improved user retention by 80%; created reusable Kotlin/Dart libraries reducing component development time by 20%.
Peer Coach
Kenzie Academy Brazil
Aug 2021 - Jul 2022 (11 months)
Mentored 6 developers in React and Python, with 75% achieving job placement within 9 months; provided technical guidance and code review to accelerate learning outcomes.
Education
Degrees, certifications, and relevant coursework
CVCruzeiro do Sul Virtual
Bachelor of Science, Computer Software Engineering
2025 -
Pursuing a Bachelor of Science in Computer Software Engineering with coursework in full-stack development and software engineering principles.
Kenzie Academy Brasil
Certificate, Full Stack Development
2021 - 2022
Activities and societies: Peer coaching and mentoring activities during program
Completed a Full Stack Developer program focused on React and Python with practical project-based learning and mentorship.
Tech stack
Software and tools used professionally
Availability
Location
BrazilAuthorized to work in
Social media
Job categories
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