Daniel Kazansky
8+ years shipping reliable products
I build production software—from AI agents and workflow automation to full-stack applications, CRM integrations, and data-heavy interfaces.
8+
Years shipping production software
20M+
Active users on marketplace products I contributed to
10M+
Data points processed in enterprise analytics systems
25%
Higher AI-assisted onboarding completion for 500+ users
Commercial product engineering, independent delivery, and publicly inspectable open-source systems.
Product engineering within commercial teams, working on marketplace, analytics, and SaaS platforms.
Upwork · Jan 2025 – May 2026 · Remote
Built and modernized reputation, credentialing, and enforcement experiences across a marketplace serving tens of millions of users. Owned frontend domains end-to-end and supported production systems through on-call responsibilities.
Subbly® · Full-time · Nov 2023 – Dec 2024 · Remote
Subscription commerce product engineering spanning setup UX, AI-assisted onboarding, and checkout. Reduced merchant setup time by 20%, raised AI-assisted onboarding completion by 25% for 500+ users, and cut payment abandonment by 15%.
Capgemini Engineering · Full-time · Jun 2022 – May 2023 · Remote
Built interactive dashboards for a big data analytics system serving enterprise marketing and forecasting, managing 10M+ data points over HTTP in a React monorepo.
End-to-end delivery of client systems, automations, and AI-native workflows.
Multilingual LangGraph assistant for booking, rescheduling, and cancellation through Telegram, with live CRM availability, identity checks, and approval-controlled writes.
Woki.one · Part-time · Jun 2023 – Dec 2023 · Remote
Led a 4-person team in a fast-paced startup to build a modular CRM system using Vue 3 under tight deadlines. Achieving a 95+ Google PageSpeed score. Engineered user-friendly, configurable features for seamless customization.
Full-stack mapping and spatial-data platform with Google Maps integration, Laravel, Vue, and location-based workflows.
Publicly inspectable systems, reusable architectures, and developer tools demonstrating how I design and build software.
Persistent multi-agent assistant that routes tasks across specialist agents, tools, schedules, and external services.
Full-stack Directus and Nuxt platform for multilingual block-based websites, visual editing, static generation, and optional AI-assisted page creation.
Software I design, build, package, and maintain for real users.
Convert Rekordbox 6/7 XML playlists and lossless tracks to WAV or AIFF without modifying your original files.
Available as a universal macOS app, with a cross-platform Python CLI for macOS, Windows, and Linux.
Python · Tkinter · FFmpeg · PyInstaller · Rekordbox XML
Tool-using LangGraph agents with persistence, authorization, failure handling, and human approval for consequential actions.
TypeScript and Python applications spanning interfaces, APIs, databases, integrations, and deployment.
Reliable delivery for commercial products: modernization, observability, testing, maintainable architecture, and production ownership.
I help teams build AI-native products, connect agents to real business workflows, and ship reliable full-stack systems.