David K.

Key Skills

Software

Don't disclose

Other

Top Subject Matter

Operational workflow automation using LLMs for assessments

AI-based health data analysis and conversational guidance

Multi-model AI chatbot engineering and prompt optimization

Top Data Types

Text

Document

Computer Code Programming

Top Task Types

Prompt + Response Writing (SFT)

Function Calling

Computer Programming/Coding

Data Collection

Question Answering

Text Generation

Object Detection

Text Summarization

Transcription

Freelancer Overview

Experience using LLMs as coding agents, everyday chatbots, and prompt evaluation. Built and created several AI based applications, including a prompt optimization AI platform where users can also make apps with no coding experience, having AI automate the entire flow. Optimization also routes to several different AI models, allowing for efficient spending and token usage. Education includes Bachelor of Science in Computer Science, University of Maryland (2025). AI-training focus includes data types such as Text, Computer Code, and Programming and labeling workflows including Prompt + Response Writing (SFT), Function Calling, and Routing.

Labeling Experience

Operations Manager — Oakbrook Management Company (LLM automation for special assessment workflows)

Don't discloseTextPrompt + Response Writing (SFT)

Built and deployed LLM-driven workflow automation to support special assessment processes using multiple foundation models. Focused on prompt/model usage and integration to reduce manual effort in operational assessments. The work emphasized generating and refining LLM outputs for end-to-end decision support in business workflows. • Used LLMs including Claude, ChatGPT, Gemini, and Copilot • Automated special assessment workflows and reduced manual toil by ~97% • Integrated LLM outputs into operational processes for tenant/owner assessments • Performed iterative prompt/model orchestration to improve output quality

2025 - Present

Mycelio AI Chat — Android/Desktop AI chatbot with prompt optimization and model routing

OtherRouting

Architected and developed an AI chatbot application that optimizes prompts and unifies multiple mainstream AI models. Implemented model routing to direct requests to appropriate models and supported structured chat experiences. The project emphasized engineering the AI interaction layer (prompt optimization, routing, and aggregated chat/project management) rather than manual data labeling. • Built an AI chatbot using Kotlin and TypeScript/JavaScript • Implemented Firebase Firestore for account and storage and integrated in-app/web billing • Added model routing via OpenRouter.ai for selecting downstream models • Enabled prompt optimization to improve answer quality with reduced user effort

2026 - 2026

Artifex Health — Android health app with built-in AI analysis (Gemini Flash)

OtherFunction Calling

Developed a health application that performs AI-assisted analysis of user health data and provides an AI chat for actionable insights. Implemented secure handling of sensitive medical-like data and reactive processing pipelines to support model-driven interpretation features. The AI component was integrated to analyze structured health metrics and generate conversational guidance. • Integrated Gemini Flash Model for health data analysis and AI chat • Implemented MVVM + Coroutines + StateFlow for reactive state handling • Used WorkManager for background synchronization of health data • Encrypted local storage and supported Health Connect metric ingestion (sleep/heart rate/steps/calories)

2025 - 2026

Education

Work History