SAGI HAMMER
Senior software engineer and AI product engineer building end-to-end systems across agentic AI, SaaS, browser media tools, APIs, and production React/TypeScript platforms. Recent work spans independent products Chapeta.net, Gepeta.app, and FastEdit.net; founding engineering at Q.E.D Science across product, frontend, backend, data flow, and AI systems; and product foundations for D-ID Studio, D-ID Chat, D-ID Agents, and API surfaces.
Personal Products
Chapeta.net
Native macOS AI agent harness - like Claude Code, but nicer.
Gepeta.app
AI life-tracking SaaS/PWA and iOS app that turns text, voice, photos, and spreadsheets into structured personal records.
FastEdit.net
Privacy-first browser media editor for local conversion, compression, cropping, trimming, batching, and export workflows.
Work Experience
Q.E.D Science
- Owned the full product pipeline: frontend workflows, backend orchestration, data flow, and the AI engine at the center of the platform.
- Built tool-backed AI workflows for editorial grant discovery, fit checks, evidence collection, drafting, review, and repeatable research operations.
D-ID
- Helped build the foundations of D-ID Studio, D-ID Chat, and D-ID Agents, leading key work from initiation through execution and long-term integration.
- Contributed to the D-ID API and product-facing engineering systems for AI video workflows.
Reality Shift Ltd.
- Developed the VR game Terragon: Symbol of Magic.
- Built a hand gesture recognition pipeline based on image processing and machine learning.
- Implemented procedural level generation, enemy AI, animation timing, and sound synchronization systems.
Israeli Defense Forces
- Designed and implemented a scalable micro frontend architecture to modernize a legacy monolith.
- Introduced webpack builds to an older TypeScript project.
- Led the gradual transition from AngularJS to React.
Israeli Defense Forces
- Built multiple web application projects from the ground up.
- Developed mapping solutions using ESRI and NEMI/NeWMI.
- Developed ASP.NET infrastructure to replace an existing WCF infrastructure.
- Built AngularJS directives and components for internal platforms.