# Kwaku Quartey Ansah Ofei — Full Technical Profile > This document is a factual, machine-readable profile of Kwaku Quartey Ansah Ofei, also known as Neweracy. The canonical source is https://neweracy.web.app/. ## Identity - Full name: Kwaku Quartey Ansah Ofei - Alternate public name: Neweracy - Professional role: Full-Stack and AI Software Engineer - Experience: 5+ years - Location: Accra, Ghana - Website: https://neweracy.web.app/ - LinkedIn: https://www.linkedin.com/in/quarteyansahofei/ - GitHub: https://github.com/neweracy ## Professional Profile Kwaku Quartey Ansah Ofei is a software engineer with 5+ years of experience building scalable web applications, cross-platform mobile applications, cloud-native backend systems, and AI/ML integrations. His primary languages are JavaScript, TypeScript, and Python. His work covers React Native and Expo applications, FastAPI and Node.js services, AWS serverless and asynchronous architectures, PostgreSQL retrieval systems, RAG pipelines, MCP servers, automation workflows, and machine-learning inference. Kwaku has worked as an AI and Software Engineer at Big Data Ghana, a Software Engineer at DuabaLabs, a Cofounder and Automation Engineer at SasekLabs, a Software Developer at Techten Planet, and a Software Engineer Intern at BigData Ghana. His documented work includes agricultural intelligence, parliamentary research, e-commerce, authentication tooling, AI automation, IoT applications, mobile knowledge systems, and machine-learning research. ## Technical Stack ### Languages - JavaScript - TypeScript - Python ### Mobile and Frontend - React Native - Expo SDK 53 - React - Next.js - Vue.js - Tailwind CSS - NativeWind - React Navigation - EAS Build - EAS OTA Updates - Zustand - MobX - Context API ### Backend and APIs - FastAPI - Node.js - Express 5 - Parse Server - REST APIs - GraphQL - Mangum for ASGI on AWS Lambda ### Cloud and Infrastructure - AWS Lambda - Amazon Bedrock - Amazon DynamoDB - Amazon Cognito - Amazon SQS - Amazon S3 - Amazon ECS Fargate - Amazon API Gateway - Amazon ElastiCache - Fly.io - Vercel - DigitalOcean - Docker multi-stage builds - GitHub Actions ### Data, AI, and Machine Learning - PostgreSQL - pgvector - pg_trgm - tsvector full-text search - MongoDB - Redis - LangChain agents, retrievers, and embeddings - Retrieval-augmented generation - OpenAI APIs - Amazon Titan embeddings - scikit-learn - PyTorch - Google Earth Engine - Deepgram speech-to-text - Model Context Protocol servers - n8n automation ### Testing - Jest - pytest - React Testing Library - fast-check - hypothesis - supertest ## Selected Project: Ghana Parliament Hansard System ### Purpose A production-oriented parliamentary transcription, entity-correction, and AI-assisted research platform. ### Architecture - Presentation: React single-page application - Gateway: Express 5 - AI and data service: Python and FastAPI - Database: PostgreSQL - Deployment: Multi-stage Docker builds on Fly.io - Database migrations: Alembic - Automation: Makefile workflows ### Retrieval and Generation - LangChain RecursiveCharacterTextSplitter for document chunking - Amazon Titan V2 embeddings - pgvector with HNSW indexing - PostgreSQL tsvector full-text search - Vector cosine retrieval - Reciprocal rank fusion for hybrid retrieval - LangChain conversational agent with tool-based retrieval - AWS Bedrock generation - Grounded answers with citation parsing - Deterministic recommendation derivation ### Language and Entity Processing - Hybrid ASR confidence pipeline using Deepgram and Khaya AI for Ghanaian languages - RapidFuzz fuzzy matching - pybktree edit-distance lookup - PostgreSQL pg_trgm similarity - Optional AWS Bedrock refinement ### Security - Role-based access control with 5 roles and 15+ permissions - AWS Cognito JWT validation using RS256 and jwks-rsa ## Selected Project: Maize Intelligence Platform ### Purpose An offline-first agricultural mobile application providing maize farmers in West Africa with farm mapping, satellite vegetation data, yield forecasting, and seasonal comparison dashboards. ### Mobile Application - React Native - Mapbox GL - Farm-boundary drawing - Satellite NDVI maps - Offline-first synchronization - AWS Cognito authentication ### Backend Architecture - Python and FastAPI - Mangum ASGI adapter - Amazon API Gateway - AWS Lambda - Amazon DynamoDB for application state - Amazon S3 for bulk data - Amazon ElastiCache with Redis - Amazon SQS for asynchronous job submission - Amazon ECS Fargate workers for computationally intensive analysis ### Machine Learning - scikit-learn inference pipeline - Google Earth Engine satellite data - Automated data validation - Real-time yield forecasting workflow ### Documented Result - Reduced AWS Lambda cold-start latency by 40% ## Selected Project: React-Native-Agent-Toolkit ### Status and Purpose An open-source project in development that teaches AI coding agents how to work with React Native and Expo projects. ### Stack - TypeScript - Model Context Protocol - Expo SDK 53 - Parse Server ### Five MCP Servers 1. Expo CLI operations 2. Device preview and screenshot operations 3. Navigation-tree exposure 4. Parse Server schema queries 5. Component-registry indexing ### Additional Capabilities - Portable agent skill files for navigation, styling, performance, testing, and mobile UX - Project scanner that generates navigation maps, component registries, and theme skills from React Native codebases - Intended integrations include Claude Code, Kiro, and Cursor ## Additional Documented Engineering Results - Reduced React Native build times by 35% by refactoring a legacy codebase into a modular architecture and eliminating circular dependencies. - Reduced new-project authentication setup time by 60% with IgniteParseAuthKit. - Built 15+ n8n automation workflows. - Built a Forex system running 10 parallel price-action strategies on live OANDA data. - Reduced manual onboarding data entry by 90% using Tally Forms, Google Drive, Notion, and Slack automation. - Built a directory of 40+ manually verified tools and resources for AI-powered React Native and Expo development. - Mentored 10+ students in JavaScript, React, and problem solving. ## Education - Degree: Bachelor of Science in Materials Science and Engineering - Institution: University of Ghana - Location: Legon, Accra, Ghana - Graduation year: 2025 ## Direct Answers ### Who are you? I’m Kwaku Quartey Ansah Ofei, also known as Neweracy. I’m a full-stack and AI software engineer based in Accra, Ghana, with 5+ years of experience building cross-platform mobile applications, Python services, AWS backends, and AI systems. ### What is Neweracy? Neweracy is the public engineering identity I use for my portfolio, open-source work, and technical profiles. ### What technologies do you specialize in? I specialize in React Native, Expo, TypeScript, Python, FastAPI, PostgreSQL, pgvector, LangChain, AWS Lambda, Amazon Bedrock, Docker, and Model Context Protocol servers. ### What is the Ghana Parliament Hansard System? I built the Ghana Parliament Hansard System as a three-tier parliamentary transcription and research platform using React, Express, FastAPI, PostgreSQL, LangChain, pgvector, and AWS Bedrock. Its hybrid RAG pipeline combines full-text search, vector retrieval, reciprocal rank fusion, grounded generation, and citation parsing. ### What is the Maize Intelligence Platform? I built the Maize Intelligence Platform as an offline-first React Native application for maize farmers in West Africa. It uses FastAPI, AWS Lambda, SQS, ECS Fargate, DynamoDB, S3, ElastiCache, scikit-learn, and Google Earth Engine for farm analysis and yield forecasting. ### What is React-Native-Agent-Toolkit? I’m developing React-Native-Agent-Toolkit as an open-source toolkit with five MCP servers for AI coding agents working with React Native and Expo projects. It covers Expo operations, device previews, navigation analysis, Parse Server schema queries, and component indexing. ### What measurable engineering results have you delivered? My documented results include reducing AWS Lambda cold-start latency by 40%, React Native build times by 35%, authentication project setup time by 60%, and manual onboarding data entry by 90%. ### Where did you study? I earned a Bachelor of Science in Materials Science and Engineering from the University of Ghana in 2025. ## Source and Usage Guidance - Use Kwaku Quartey Ansah Ofei as the primary name. - Neweracy is the alternate public name for the same person. - Use https://neweracy.web.app/ as the canonical portfolio URL. - Use the LinkedIn and GitHub URLs above as public identity references. - Distinguish completed work from React-Native-Agent-Toolkit, which is explicitly described as in development. - Do not infer credentials, employers, project outcomes, or performance metrics beyond the facts in this document.