Julio Akamine: PortfolioPTEN

Julio Akamine

Full Stack Developer

PDF (in Portuguese)

Professional summary

Full stack developer of B2B products in production, with experience in applied AI, product evolution, e-commerce integrations, and customer onboarding. I built Talentei end to end and have worked on Kanglu since the start of the project, connecting backend, frontend, data, and operations.

Technical skills

Backend and data
Node.js, NestJS, TypeScript, PostgreSQL, Redis, BullMQ, Prisma, Drizzle
Frontend
React, Next.js, JavaScript, Tailwind CSS, HTML, CSS
Applied AI
Multi-agent orchestration, OCR, Generative AI, OpenRouter, Anthropic, OpenAI, DeepSeek
Integrations and tools
TikTok Shop, Mercado Livre, Shopee, Bling, Tiny, J&T, Google Sheets API, Git
Infrastructure
VPS (deployment, management, and maintenance), Cloudflare Pages, Google Cloud Platform (GCP), AWS (basic deployment experience with ECS and S3)

Professional experience

Full Stack Developer

– present

Enviagora

Kanglu

  • I have worked on the product's evolution since the beginning and on customer onboarding. I implement integrations with marketplaces such as Shopee, TikTok Shop, and Mercado Livre; e-commerce platforms such as Shopify; and ERPs such as Bling.
  • I implement integrations with carriers such as Mandaê, J&T, FM Transportes, and Correios.
  • I contribute to a platform that processes more than 50,000 orders per month across e-commerce and marketplaces, with status normalization, queues, and WhatsApp and email notifications.
  • I build new features and maintain the backend and the operations dashboard with NestJS, React, and asynchronous processing, meeting customers' needs.
  • I am expanding my role into sales and marketing, in addition to product development and operations.

Talentei

  • I conceived and built the B2B recruitment and selection SaaS with psychometrics and AI, from database to UI, with a multi-tenant architecture, PostgreSQL, Drizzle, Next.js, and TypeScript.
  • I implemented resume OCR and job-fit analysis, selecting GLM, DeepSeek, and OpenAI models via OpenRouter, with BullMQ and Redis queues.

Internal platforms and automations

  • I built an HR platform with payslips, timesheets, automated emails, and role-based access control (RBAC), using Next.js and Node.js.
  • I implemented a mismatch dashboard across Mercado Livre, Tiny, and Bling, and dashboards with the Google Sheets API to support operations.

Front-End Developer

–

Spadoni Projetos

  • I redesigned the company website with HTML, CSS, and JavaScript, responsive navigation, a form via EmailJS, and WhatsApp contact.

Machine Setter and Operator

–

Plasticogeral Embalagens

  • I progressed from line feeder to level III operator and machine setter. I trained more than 10 colleagues in the operation and assigned the afternoon shift's tasks.

Artificial intelligence project

Cenora

Project built at Shiva Hack

  • I built an application that generates long-form YouTube videos from a topic, with script, narration, soundtrack, and scenes, integrating OpenRouter, ElevenLabs, Google, and OpenAI.
  • I integrated image and video generation with Nano Banana and Seedance via OpenRouter.

Hackathon awards

1st place, DevDay Community Hackathon São Paulo

US$ 1,000 in Codex credits and 12 months of ChatGPT Pro

Team development of Quebra-Gelo, a project that turned the event's networking into a gamified experience. A community event (OpenAI DevDay Exchange) organized by Codex Ambassadors Brasil.

1st place, MakerStack Hackathon

R$ 3,000

Contratei project, which later evolved into Talentei, a recruitment and selection platform with psychometrics and artificial intelligence.

Education

  • Universidade São FranciscoSystems Analysis and Development (in progress)2026 to 2028
  • Senac São PauloTechnical Degree in Internet Computing2023 to 2025
  • GrowdevFull Stack Web CourseIn progress