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David Veksler DavidVeksler

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Applied AI / principal engineer. I get frontier models into production where the compliance bar is high: governance, observability, agentic workflows.
49 followers · 24 following
  • Paytech Systems
  • Denver, CO
  • 08:23 (UTC -07:00)
  • https://davidveksler.substack.com/
  • @heroiclife
  • https://futureoflife.substack.com/
  • https://davidveksler.substack.com/
  • veksler

Achievements

Achievement: Pull Sharkx3Achievement: Pair Extraordinairex3Achievement: QuickdrawAchievement: YOLOAchievement: Arctic Code Vault ContributorAchievement: Starstruck

Achievements

Achievement: Pull Sharkx3Achievement: Pair Extraordinairex3Achievement: QuickdrawAchievement: YOLOAchievement: Arctic Code Vault ContributorAchievement: Starstruck

Organizations

@Mises @fee-org @Jellyfish-Insights @sapan-ai @Paytech-Labs
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davidveksler/README.md

David Veksler: Applied AI / Principal AI Engineer

Frontier-model deployment · AI governance & observability · agentic engineering · regulated fintech

I get frontier models into production in places where the regulatory and security bar is high. Anyone can demo an agent. The hard part is the substrate underneath: review gates, observability, permission boundaries, and a hard rule that AI never touches the system of record.

What I've built

  • Agentic engineering at Antech. Claude Code and Copilot workflows that built a support platform end to end and automated unit testing — a 4.2x velocity increase on measured delivery.
  • A decade in regulated fintech and digital assets before that: CCSS Level 3 custody, wrapped tokens at $100M+ TVL, and recovery tooling that scanned vaults across 20+ EVM networks to bring back $4M+ in stranded assets.

Background

~20 years of engineering, principal/staff level. I reach for frontier models plus retrieval before fine-tuning, almost every time.

I don't train models and I'm not a prompt engineer. I'm the person you bring in when the demo worked and now it has to survive compliance.

Skills & tools

AI/LLM engineering: Claude, GPT, agentic workflows, RAG, MCP, AI governance, LLM observability, prompt/skill marketplaces, Claude Code, GitHub Copilot Languages & platforms: C#/.NET, Python, TypeScript/React, SQL Infrastructure: Azure, AWS, OpenTelemetry Domain: regulated fintech, digital asset custody, commercial lending, compliance-grade software delivery

Reach me

[email protected] · LinkedIn · Substack

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  1. CryptAByte CryptAByte Public

    Free, open-source C#/.NET toolkit for secure encrypted message and file sharing over the web using public-key infrastructure (RSA, AES-256, SHA-256). Includes CryptoPad and OneTimePad utilities.

    C# 35 7

  2. Crypto-Portfolio-Tracker Crypto-Portfolio-Tracker Public

    Cross-platform cryptocurrency portfolio tracker (.NET console app) for real-time Bitcoin & Ethereum wallet balances via xpub/zpub, CoinGecko prices, and Electrum servers.

    C# 2

  3. Jellyfish-Insights/andromeda Jellyfish-Insights/andromeda Public

    Don’t be held hostage by other providers. Own and aggregate your data from organic and paid campaigns in a single place to pull and review as needed

    C# 11 5

  4. Fireblocks-Raw-Client Fireblocks-Raw-Client Public

    TypeScript scripts for sending raw transactions via the Fireblocks API — crypto custody operations for unsupported tokens and hidden vaults on EVM and Bitcoin-like chains.

    TypeScript 1 1

  5. LLMCraftedBlazorSamples LLMCraftedBlazorSamples Public

    Blazor and C# code samples, components, and utilities for ASP.NET Core apps — generated with the assistance of Claude AI (LLM-generated code samples)

    HTML 3 1

  6. CodeContext CodeContext Public

    CLI tool & MCP server that turns a codebase into text for an LLM to see its context — feed code to ChatGPT, Claude, or any AI coding assistant

    C# 23 3

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