ATS-Friendly Portfolio

Leja Aprianza

Product Developer

Bandar Lampung, Lampunglejaprianza@gmail.com

Product Development professional with experience in full-stack engineering, workflow automation, and backend system design for fintech, AI chatbot, and Web3 applications. Skilled in REST API integration, database architecture, frontend development, and building scalable digital products end-to-end.

Experience

Work History

💳
Product Development

WeselAja (PT Xtra Pembayaran Aman)

Nov 2025 - Present

Bandar Lampung

  • Developed a subscription chatbot to help merchants manage recurring customer payments and subscriptions
  • Designed backend architecture using Supabase — database schema, authentication, API management, PostgreSQL
  • Built Next.js frontend integrated with Supabase for real-time data handling
  • Integrated multiple platforms: Supabase, n8n, Telegram, and Xenith payment gateway
  • Analyzed merchant requirements and translated them into technical solutions
  • Designed and optimized AI agent prompts for subscription-based scenarios
  • Improved chatbot conversational flow for more intuitive user experience
  • Implemented CI/CD pipeline with GitHub Actions
📊
Frontend Developer

Teman Data

Mar 2022 - Jan 2025

Jakarta

  • Built interactive and responsive frontend interfaces, including chatbot extensions
  • Implemented dynamic data rendering from backend API endpoints
  • Real-time communication via Socket.IO client-server architecture
  • Data visualization dashboards using Next.js and ECharts
  • Interactive Traffic Map with Next.js, Mapbox, and ECharts
  • Collaborated with backend and Web3 teams for dApp integration
  • Supported Web3 integration: bridging Web2 applications with blockchain
  • Wrote, tested, and deployed Ethereum smart contracts (Remix, Truffle, IPFS, Web3.js)
Education

Academic Background

Bachelor of Electrical Engineering

Institut Teknologi Sumatera (ITERA)

Aug 2017 - Aug 2022

Lampung

GPA: 3.50/4.00 Lab Assistant, Electrical Engineering
Machine Learning Path Student

Bangkit Academy — Google, Tokopedia, Gojek, Traveloka

Feb 2021 - Jul 2021

  • Completed an intensive ML and AI development program
  • Built end-to-end ML projects: preprocessing, feature engineering, training, evaluation
  • Developed predictive models using Python, TensorFlow, and Scikit-learn
  • Applied supervised & unsupervised learning techniques on real-world datasets
  • Implemented evaluation metrics (accuracy, precision, recall, F1-score)
  • Collaborated across cross-functional teams for capstone project
  • Deployed ML models via cloud services and REST API
  • Practiced MLOps: version control and experiment tracking
Internship Technician

BESTNET Computer

Mar 2015 - May 2015

  • Diagnosed and repaired hardware and peripheral devices
  • Performed routine maintenance, device setup, and system troubleshooting
  • Provided customer service with clear and friendly technical communication
Skills

Technical Skills

Languages

JavaScriptTypeScriptPythonSolidity

Frontend

ReactNext.jsMapboxECharts

Backend & DB

Node.jsPostgreSQLSupabaseMySQL

Web3

Web3.jsEthers.jsIPFSSoliditySmart Contracts

DevOps & Tools

DockerGitGitHub Actionsn8nSocket.IO

Payment

Payment GatewayXenithMidtrans

Languages: English (Professional), Indonesian (Native)

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