Hi, I'm Jacob Lehman

An AI-powered resume builder that generates ATS-optimized resumes tailored to specific job descriptions. Built with a multi-step questionnaire, multiple resume templates, Google authentication, and PDF export.

Built a multiple linear regression model on 200,000+ Cook County property records to predict sale prices. Analyzed bias between assessed and actual market values, exploring fairness implications in property taxation. Involved EDA, one-hot encoding, feature selection, and model evaluation.

Led a 6-person team to design and build a full-stack task marketplace connecting users with service providers for chores and errands. Implemented user authentication, category-based filtering, and payment integration. Deployed to Render via Docker with 242+ commits across the team.

Implemented a game-playing AI for Mancala using the alpha-beta pruning algorithm to optimize move selection. Conducted performance analysis comparing the alpha-beta AI against a random move bot to measure the effectiveness of the search strategy.

A fully playable two-player chess game built with JavaFX. Enforces legal moves for all pieces, detects check, checkmate, and stalemate. Built with four design patterns: Strategy for piece movement, Observer for game events, Singleton for the event bus, and Factory for piece creation.

Built a web vulnerability scanner that identifies security misconfigurations and exposed sensitive files. Features security header analysis (X-Frame-Options, HSTS, CSP) with color-coded severity classification, sensitive file detection (.git, .env, database backups), and a GUI with ethical authorization prompts.

Configured a Raspberry Pi as a Wi-Fi extender with its own access point, DHCP server, and NAT-based traffic forwarding. Implemented stateful firewall rules, automatic switching between Ethernet and Wi-Fi upstream connections, and routing that survives reboots and cable disconnects.