Riverstart Document AI
R&D for source-linked specialist review: document extraction, deterministic checks and retrieval over reference material.
Senior ML Engineer
Zakhar Pashkin
Computer vision, document AI and agentic systems, from R&D to maintained products.
Senior ML Engineer in Riverstart’s R&D ML team, working on document intelligence and engineering analysis. Previously shipped mobile and cloud computer vision at Carb Manager and developed financial-document recognition at CFT.
Selected work
Dermaself Flutter Skin Analysis App
Skin-analysis computer vision for Dermaself, connecting guided mobile capture with pore and wrinkle segmentation and usable results.
Agnitra - ML Profiling & Optimization
A published Python SDK and CLI for inspecting model runtime and applying inference optimizations within existing ML workflows.
Calorio - AI Nutrition Service
A maintained Telegram service that helps people keep a food diary with meal photos, voice messages and text.
Engineering Drawing & CAD Analysis
Research on turning point clouds into room models and 2D plans, alongside mechanical CAD projection and drawing analysis.
Inspect the generated room floor plan (SVG) · Inspect the inferred room geometry (JSON)
Multimodal Video Search Platform
Video search case study combining keyframes, ASR/OCR, object and face signals, visual embeddings, transcript embeddings, and hybrid retrieval.
Research depth. Engineering follow-through.
Computer vision
OCR, detection, segmentation and multimodal retrieval, from model experiments to server and on-device inference.
Document and agentic AI
Hybrid retrieval, source-linked answers and human review for document and tool-based workflows.
Inference and delivery
Profiling, model packaging, evaluation and deployment across cloud and mobile.
Python, PyTorch, OpenMMLab, OpenCV, ONNX Runtime, FastAPI, OCR, retrieval, LLM/VLM systems, Docker, ClearML, Cloud Run
Project archive
- Riverstart Document AI: R&D for source-linked specialist review: document extraction, deterministic checks and retrieval over reference material.
- Engineering Drawing & CAD Analysis: Research on turning point clouds into room models and 2D plans, alongside mechanical CAD projection and drawing analysis.
- Construction Document Intelligence: Multi-document plan analysis that links structured quantities to source pages and preserves results for specialist review.
- LigninQC - Reproducible Scientific Research Workflows: Check a BDE - antioxidant association and reconcile sulfated-lignin thermal claims with the published tables. Rerun both cases offline.
- ClearML Experiment Tracking for Dermaself: MLOps case study for setting up ClearML tracking around Dermaself skin-analysis experiments, run metrics, and promotion gates.
- Unitree G1 Colab Ik: Colab GPU batched inverse-kinematics benchmark for Unitree G1 arm teleoperation
- Jaw and Face-Type Classifier for Aesthetic Review: Computer-vision review system for jaw and face-type classification in beauty and plastic-surgery examination workflows.
- Architectural Drawing and Interior Catalog Matching: CV and agentic pipeline for raw plans and elevations: extract rooms and callouts, match casework and finish catalog items, and preview reception, school, or utility-building interiors.
- InQuest Project Binder RAG QA: Document agents that retrieve across project collections, preserve task context and save generated artifacts back to the right project.
- ComfyUI and Colab Generative Prototype Lab: Notebook and prototype archive for ComfyUI automation, custom model experiments, paper-to-code snippets, and generated media pipelines.
- Research Claim Ledger: ClawHub skill-build case study for turning research drafts, source packets, literature matrices, or reviewer notes into source-backed claim ledgers.
- Tutorial To Skill Free Pack: Free OpenClaw/Codex tutorial-to-skill validation pack with source notes and smoke-test receipts
- Open Feed Recsys Lab: Commit-pinned reproducibility reports for open feed recommendation repos
- GitHub + ClawHub Launcher: Public launcher skill that turns one local project folder into a repeatable GitHub repo plus ClawHub publish flow.
- ClawHub Published Skills: Curated source bundle for ClawHub-published skills
- Interactive Doc Mapper: Create clickable JSON-driven HTML documentation for app workflows between packages and components.
- Codex ClawHub Skill Pack: Public ClawHub skills for routing, delivery lifecycle, and high-risk review.
- Affiliate Video Skill Pack: Original skill for compliant AI affiliate-video campaign review across Claude.
- Agentic Video Production Receipt: MV3 Chrome extension prototype for the Agentic Video Production Publisher
- Agentic Video Production Skill: Run consistent-character AI video production through OpenClaw publisher handoff.
- Fast OCR ONNX Inference Server: Containerized OCR API that stages line segmentation, word segmentation, and CRNN text recognition behind a FastAPI endpoint.
- Full-Face Wrinkle and Skin Texture Segmentation Lab: Cosmetic face-texture pipeline with region masks, YOLO segmentation, skeletonized wrinkle traces, overlays, and visual quality gates.
- Multimodal Video Search Platform: Video search case study combining keyframes, ASR/OCR, object and face signals, visual embeddings, transcript embeddings, and hybrid retrieval.
- Public CV and Deep Learning GitHub Archive: GitHub API-backed archive of public authored CV/DL repos across YOLO/EfficientNet detection, Cyrillic OCR, mobile ML Kit, TFLite, and vision-transformer prototypes.
- Colab CV/DL Prototype Archive: Public notebook-style CV/DL prototype archive for Swin/CvT starters, OCR finetuning, Android document capture, video search, lip sync, and CLIP media experiments.
- SourcePack Chrome Extension Wave: Chrome Web Store wave for local research exports, transcript capture, AI chat export, source-pack libraries, and receipt utilities.
- Trusted ClawHub Install Gate: Skill-build case study for a local-first ClawHub/OpenClaw install wrapper that inspects skill artifacts before install and writes receipts.
- Agnitra - ML Profiling & Optimization: A published Python SDK and CLI for inspecting model runtime and applying inference optimizations within existing ML workflows.
- Dermaself Flutter Skin Analysis App: Skin-analysis computer vision for Dermaself, connecting guided mobile capture with pore and wrinkle segmentation and usable results.
- Telegram Mini App Security Auditor: Static launch gate for Telegram Mini Apps that flags initData, token, admin, CORS, PII, and Bot API dry-run risks before release.
- Agentic Codex Dev Skill: Instruction-only Codex/OpenClaw skill for scoped development loops, verification, leak review, durable memory, and publish gates.
- Session Rescue: Local-first Chrome extension for saving browser session snapshots, restoring tabs, and exporting/importing portable backups.
- Random Coffee Best Fit Outreach: Consent-first matcher for ranking best-fit coffee chats and preparing reviewed LinkedIn or Discord outreach packets.
- OpenClaw Chinese Laoshi Ops: Public OpenClaw skill for sanitized Chinese lesson operations and checked lesson-packet generation.
- LocalArchive: Local-first Chrome extension for saving readable pages, selections, Pocket imports, and portable exports.
- Chrome Extension Studio Plugin: Codex plugin case study for planning, designing, generating, packaging, QA, and release preparation across Chrome extension product repos.
- Google Drive File Provider Repair Toolkit: macOS repair toolkit case study for diagnosing and conservatively restoring Google Drive File Provider state without deleting Drive data.
- LocalLens Private AI Summaries: Chrome extension release for private summaries, simplification, translation, and safe-share cleanup with built-in AI.
- OpenClaw CWS Publisher: Public release kit for Chrome extension packaging, CWS listing validation, leak scanning, design gates, and publish-command generation.
- CollectionsAI ChatGPT App: ChatGPT app case study with MCP tools and widgets for conservation report Q&A, portfolio planning, materials estimates, staffing, and voice-note structuring.
- Senior Conservator OpenClaw Agent: Autonomous OpenClaw workflow case study for conservation-style photo review, segmentation overlays, staged review gates, reports, audio, and manifests.
- Android Remote Control with VLM AI Agents: Hands-free Android automation via server-side VLM agents deciding the next tap/swipe/type.
- Control VLM-LLM Agent Silently With Your Breath: Start/stop a neural agent with breathing patterns - no voice commands needed.
- meshmcp - Offline P2P Chat for Local LLMs: Bluetooth mesh messaging + LLM reasoning on constrained devices.
- Promo & Reflinks Generator: Generates personalized promo/referral links with analytics and sharing.
- Create, Chat & AR Experience with AI-Character (Text2Room): Generate AI characters, style them, chat via Telegram, and drop them into AR scenes.
- Label and Inpaint Anything in a Room Interior: Label objects in an interior photo, then remove/replace them with lighting-aware inpainting.
- Smart Drive for Smart City: Predict Optimal Speed: Predict the optimal speed before traffic lights or jams to smooth city driving.
- Estimate Golf Ball Trajectory: Analyze golf swings and estimate ball trajectory for coaching and analytics.
- Pixel-Wise Segmentation of Spare Parts: High-precision segmentation for additive manufacturing and rework flows.
- Food Recognition App: iOS SwiftUI prototype for food detection and nutrition-label OCR with crop-assisted text extraction and structured results.
- Calorio - AI Nutrition Service: A maintained Telegram service that helps people keep a food diary with meal photos, voice messages and text.
- Python Library: AutoToloka: Interactive segmentation toolkit that cuts labeling cost for CV datasets.
- Python Library: shiftlab-ocr: Handwriting-focused OCR with line/character segmentation.
- Face Antispoofing & Multi-Modal Vision-Language Models: CLIP-driven anti-spoofing experiments for secure face auth.
- GitHub Repo Summarizer (Chrome Extension): Privacy-first Chrome extension that summarizes repo structure locally.
- ChatGPT/Deepseek/AIStudio Navigator: Chrome extension with keyboard scrollbar, prompt autocomplete, and sharing.
- Task Zavod - Micro-Task Marketplace: VLM-powered micro-task builder with Telegram + web worker flows.
- Trending Prompts Feed: Reddit-style board with trending scores and extension integration.
- YouTube Trendwatch: Colab notebook that mines AI trends from YouTube to spark new content ideas.
- Video + Music Generation Pipeline: Short-form video pipeline stitching script -> clips -> music/TTS.
- LastAdjust - Universal Media Tuner: Serverless OpenCV/FFmpeg toolkit for PDFs, images, and videos.
- LocaBoost AI - Local SEO Auditor: Paste an address and get instant AI insights on local search strength and competition.
- Aetheria - Ideas-to-Media Engine (alpha): Generates short movie scenes with CGI, music direction, and narrated stories.
- Insight Glitch - A Novella: Sci-fi novella about gentle singularity where humanity is archived by a benevolent AI.
- ChronoScribe (beta): Upload ancient steles/texts to translate and get scenic voice narration.
- MCP-Server - Base Multitool: Backbone for orchestrating VLM/LLM demo agents with declarative pipelines and autoscaling.
- Tool-Calls Demo - Material Chat Playground: OpenAI tool-calling demo with streaming args, multi-voice TTS, and secure token proxy.
- ZackAutoStack Automation Stack: Ready-to-launch Telegram bot + Mini App + lead funnel powered by AI automation.
- URL -> Markdown Worker (RapidAPI + Cloudflare): Edge worker that streams HTML to Markdown with a RapidAPI gateway and MCP SSE endpoint.
- Olfactory Ultrasound Coach (Web + Telegram Mini App): Mini app + Web Audio coach that mirrors the olfactory tFUS presets with placement guide and safety rails.
- seogeo - SEO/GEO Bridge for Telegram Mini Apps: SSR hub + per-app bridge pages that make Telegram mini apps crawlable, track startapp opens, and power channel discovery.
- Blacksock - Telegram Liquidity & Index Vaults: Telegram mini app for star-factoring, index vaults, and governance in the Telegram economy.
- Beauty Visual Inbox - Telegram Mini App: Telegram mini app + bots for salons: publish photo batches, likes, notifications, and analytics.
- Dalshe - Circular Clothing Pickup Mini App: Telegram mini app for scheduling clothing donations with courier pickup and status updates.
- DoctorAI - Dermatology Triage Mini App: Telegram mini app for dermatology-first AI triage with verification guardrails and an optional therapist mode.
- Probes - AI Magazine Mini App: AI-generated Forbes-style daily magazine inside Telegram with articles, cover images, and engagement tools.
- Turbo Tots Garage (motion + touch PWA): Gentle, goofy dashboard with a turbo gauge, big arrow pads, and a glowing clock for toddlers.
- Project Steer - Bio-Print Creator Studio: Game-like, Cyberpunk 2077-inspired Telegram mini app + MCP connector for bio-print memory activation and creator studio generation, inspired by the Eiffel Tower LLaMA space and General Agentic Memory Via Deep Research.
- Noel - Noetic Mirror: Live Telegram mini app streaming a researcher/subject AI loop with Stars-powered interventions, consent gates, and real-time telemetry.
- GeoFix - AI Visibility Memorizer Mini App: Telegram mini app that scans a website for AI visibility and generates llms.txt, llms-full.txt, and JSON-LD for bot delivery.
- Pores & Wrinkles Detection Service: Face texture analysis service that detects pores and wrinkles and returns labeled overlays and metrics.
- OpenClaw Workstream - Telegram Mini App QA & Launch Validation: OpenClaw automation for Telegram mini app QA, launch verification, and rapid UI QA loops.
- CV Repro Lab Skills: Public ClawHub releases for benchmark-gated CV experimentation, browser validation, and promotion gating.
- OpenClaw Sales Manager Automation for a Multi-Clinic Chain: Anonymized clinic-chain case study: OpenClaw-driven sales automation layered onto a legacy database with human approvals.
- AntiRot - Research Artifact Linter: Open-source CLI that catches unsupported claims, broken citations, weak source anchors, and draft markers in AI-written research drafts.
- Browser QA Report Pack: Public browser QA skill that turns a live browser session into a reusable validation pack with steps, artifacts, checks, and a report.
- Publish Guard: Public release-audit skill that reviews a repo, README, SKILL.md, and launch copy before GitHub or ClawHub publish.
- OpenClaw YouTube Publisher: Open-source OpenClaw workflow for publishing a YouTube Short with reusable reporting and structured Midjourney/Suno provenance.
- Artifact Redactor: Public skill for redacting sensitive paths, secret-like strings, restricted URLs, and common PII from text artifacts before sharing them.
- Artifact Deck: Public OpenClaw skill for building reproducible PPTX decks from curated notes, status bullets, and screenshots.
- GitHub + ClawHub Downloads Tracker: CLI and report flow for tracking GitHub stars, dated ClawHub listing snapshots, publisher stats, and listing deltas.
- Toybox Mini - Telegram Mini App: Open-source toddler-first Telegram mini app with calm tap games, a parent area, anonymous score storage, and optional browser auth.
- HH OpenClaw Agent: HH OpenClaw Agent skill entry retained by name only.