Ersapta Aristo

• Built the operator side of an automated website content system: a runner panel with job labels, a usage-limit pause, and a nine-check quality gate that holds anything back until it passes.
• Agents execute from a written specification, and nothing publishes until the quality gate passes.

Built the operator side of an automated website content system, including a runner panel with job labels, a usage-limit pause, and a nine-check quality gate. Agents execute from a written specification, and nothing publishes until the quality gate passes.

Developed a barcode scanning PWA with native BarcodeDetector or ZBar compiled to WebAssembly, an IndexedDB scan queue, and resumable uploads. Implemented Supabase backend with row-level security, SECURITY DEFINER functions, and Deno edge functions for AI extraction and data pipelines.

• Barcode scanning PWA: ZBar compiled to WebAssembly in a Web Worker, an IndexedDB scan queue that survives a refresh, resumable uploads.
• Supabase backend: OTP auth, row-level security, SECURITY DEFINER functions, Deno edge functions.
• AI extraction with OpenAI and Gemini JSON schemas.
• Paid vendor API pipeline: responses stored once, workers claim jobs through a Postgres queue so retries cannot double-spend.

• CoupleSwap (Google Play): NestJS backend in production with realtime chat over WebSocket, matching, photo upload, push notifications and Sentry.
• Multi-tenant SaaS: forced Postgres row-level security across 25 tables and 52 policies.
• Stripe subscription billing through signature-verified, idempotent webhooks.
• n8n and Claude API workflows where a model drafts and a human releases with an audit trail.

Developed CoupleSwap, a React Native app with NestJS backend, realtime chat, matching, and push notifications. Built multi-tenant SaaS on PostgreSQL with row-level security, Stripe subscription billing, and n8n/Claude API workflows.

Ran Meta ad campaigns with WhatsApp messages as the objective, qualified incoming leads, and scheduled on-site survey appointments.

• Led development of a dynamic web application on the Next.js 14 App Router with Tailwind CSS and responsive design.
• Built a dark and light mode switch for visual accessibility and user preference.
• Contributed to the FastAPI backend service, using Alembic for schema migrations.
• Directed the interface redesign from concept through implementation and took part in backend architecture discussions.

Led development of a dynamic web application on Next.js 14 App Router with Tailwind CSS and responsive design. Contributed to FastAPI backend with Alembic migrations and directed UI/UX redesign.

• Organised UI components into an atomic design system (atoms, molecules, organisms, templates, pages).
• Implemented a full chat experience on the Next.js App Router with Tailwind CSS, responsive layouts and a dark and light mode switch, and directed the interface design end to end.

• Full Stack JavaScript Instructor (Nov 2022 to Aug 2023): mentored over 100 beginner programmers across JavaScript, Express, OOP, PostgreSQL, React and React Native.
• Data Science Instructor (Aug 2023 to Mar 2024): mentored over 40 beginner programmers across Python, PostgreSQL, OOP, data analytics, Tableau, Pandas and Seaborn.

Organized UI components into an atomic design system and implemented a full chat experience. Built on Next.js App Router with Tailwind CSS, responsive layouts, and dark/light mode switch.

Mentored over 40 beginner programmers across Python, PostgreSQL, OOP, data analytics, Tableau, Pandas, and Seaborn.

Mentored over 100 beginner programmers across JavaScript, Express, OOP, PostgreSQL, React, and React Native, with consistently strong student feedback.

• Built a React Native marketplace with payment gateway integration, real-time chat and push notifications, and carried it through Google Play review to launch.
• Made the app run well on low-specification phones through targeted UI and development optimisation, and designed every screen in Figma.

Built a React Native marketplace with payment gateway integration, real-time chat, and push notifications, and carried it through Google Play review to launch. Optimized app performance for low-specification phones and designed screens in Figma.

• Rewrote long-running PostgreSQL queries to run under one second.
• Rebuilt a Google Maps screen that crashed under too many pins: per-zoom rendering, visible-bounds loading, fetch on move, 15-minute pin cache.
• Built listing logic for paid placement against organic results.
• PERN stack, React Native native bridges, Neo4j recommendations, Redis and AWS in production; onboarded four new team members.

Optimized complex PostgreSQL queries to run under one second and rebuilt a Google Maps screen to load only visible pins. Built listing logic for paid placement and worked on PERN stack with React Native, Neo4j, Redis, and AWS.

• Ran progress reporting for four concurrent projects and directed team tasks, reaching a 90 percent on-time delivery rate.
• Delivered roughly 20 percent of the development work hands-on, building full-stack features on CodeIgniter.

Led progress reporting for four concurrent projects and directed team tasks, achieving a 90% on-time delivery rate. Delivered about 20% of development work hands-on, building full-stack features on CodeIgniter.

Grade: 3.34

Bachelor of Science in Information Systems with a GPA of 3.34, completed from 2015 to 2019.

Earned the SQL (Advanced) Certificate from HackerRank.

Earned the Problem Solving (Basic) Certificate from HackerRank.

Earned the JavaScript (Intermediate) Certificate from HackerRank.

Earned the Back-End Web Development Certificate from Triplebyte.

Completed the JavaScript Algorithms and Data Structures certification from freeCodeCamp.

Grade: 3.34