Technical writing by Mudassir Khan — agentic AI consultant and AI systems architect. New posts published directly on this site. Earlier writing on Dev.to.
Multi-agent design patterns, LLM selection, agent evaluation, and security for production autonomous systems.
Sequential, orchestrator-worker, hierarchical, and dynamic handoff — the four multi-agent patterns used in production in 2026, with LangGraph implementation guidance for each.
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Not all LLMs are equal for agentic AI. This comparison covers GPT-5.4, Claude Sonnet 4.6, and Gemini 2.5 across tool-call reliability, context, cost, and safety for production agents.
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Agent failures happen at the span level, not the final output. This guide covers RAGAS metrics, span-level evaluation, LangSmith setup, and the target scores that matter in 2026.
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Prompt injection is OWASP's number one LLM risk. This guide covers the Lethal Trifecta, indirect injection, and the seven-layer defense stack for production agents in 2026.
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AI agents with wallets, smart contract execution, and on-chain governance are live in 2026. This guide covers the architecture, ERC-4337 account abstraction, and production use cases.
Read post →Production RAG pipelines, vector database selection, fine-tuning tradeoffs, and LLM governance.
JavaScript is the language of the web and modern AI tooling. This guide covers variables, functions, loops, objects, async, and your first program.
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Most RAG failures happen at retrieval. This guide covers chunking, hybrid search, reranking, and RAGAS metrics for production RAG pipelines in 2026.
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RAG fixes knowledge gaps. Fine-tuning fixes behavior gaps. Here is the decision framework that actually helps in production, plus the 2026 hybrid standard.
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An AI architect's guide to choosing a vector database in 2026. Start on pgvector, migrate when you must. Here is when each option wins and what the performance numbers actually show.
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EU AI Act full enforcement begins August 2026. This practical checklist covers the five governance layers every production LLM system needs — with ISO 42001 and EU AI Act mappings.
Read post →When to hire, which AI roles you actually need, and how to structure consulting engagements.
A practical guide to hiring an agentic AI consultant — when you actually need one (vs. a general AI agency), what to look for, how engagement models work, and what it costs in 2026.
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A clear breakdown of what an AI systems architect does, how the role differs from ML engineers and data scientists, when your team needs one, and what they deliver in 2026.
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Should your startup hire an AI engineer or engage a consultant? This decision guide covers timeline, cost, risk, and the hybrid model most seed-stage teams actually use.
Read post →Ethereum, Solana, smart contracts, wallets, on-chain transactions, and ERC token standards.
Learn the uint array in Solidity end to end. push, pop, delete, swap and pop, memory arrays, fixed length, and a Remix contract with every method.
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Learn the int array in Solidity end to end. push, pop, delete, swap and pop, signed values, memory arrays, fixed length, and a Remix contract with every method.
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Learn the string array in Solidity end to end. push, pop, delete, swap and pop, the memory keyword, fixed length, and a Remix contract with every method.
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Learn the address array in Solidity end to end. push, pop, delete, swap and pop, the zero address, memory arrays, and a Remix Whitelist with every method.
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Learn the struct array in Solidity end to end. push, pop, delete, swap and pop, field updates, memory and storage, and a Remix StudentRegistry contract.
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Build an ERC20 token from scratch and deploy it on Remix IDE. Full interface, contract code, deploy walkthrough, and the approve and transferFrom pattern.
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Build a complete ERC721 NFT contract on Remix IDE. Full interface, mint and transfer code, IPFS metadata, and the safeTransferFrom receiver pattern.
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Build an ERC1155 multi token contract on Remix IDE. Full interface, batch operations, mint and transfer code, and a deployable game ready example.
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Distributed ledgers, immutability, and decentralization explained — plus a side by side breakdown of Ethereum's Gasper consensus and Solana's Proof of History. Speed vs security.
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A developer's guide to blockchain network environments — mainnet vs testnet, Chain IDs that prevent replay attacks, RPC nodes explained, and how to add any EVM network to MetaMask.
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Solidity is the language for Ethereum smart contracts. This guide covers variables, functions, loops, control flow, and your first deployable contract.
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Mapping with struct is Solidity's workhorse for per-user state. Learn the pattern, see a full voting registry, master storage packing, and avoid the four common pitfalls.
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Arrays plus loops in Solidity: for vs while, the vote tally pattern, the unbounded loop bug, pagination, and pull over push. Six patterns and a complete worked example.
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Learn arrays in Solidity from scratch. Fixed and dynamic arrays, push, pop, length, delete, storage vs memory vs calldata, plus a full worked contract.
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Build a Solidity calculator smart contract from scratch. Add, subtract, multiply, divide with pure functions, stored state, events, and require, deployed in Remix.
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Solidity powers Ethereum DeFi. Rust powers Solana's Sealevel parallel runtime. Here is how the two languages differ on safety, performance, learning curve, and ecosystem depth.
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How an Ethereum wallet actually works — private and public keys, address derivation, seed phrases, and how a signed transaction proves ownership without revealing your key.
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An Ethereum transaction is a signed message. This guide walks through every field, the wallet to mempool to block lifecycle, gas pricing, and why some transactions fail.
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ERC token standards from ERC20 to ERC4337 — fungible tokens, NFTs, multi token contracts, tokenized vaults, and account abstraction with what each standard is for.
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What a crypto wallet actually stores, the difference between custodial and non-custodial, and a step by step guide to installing MetaMask and Phantom and sending your first testnet transaction.
Read post →Essays and early-stage thinking, published on Dev.to.
How closed-loop retrieval with shared-space learning improves grounding quality in production RAG systems — and why most RAG pipelines are broken at the retrieval–generation boundary.
Read on Dev.to ↗
A practical perspective on prompt-first workflows, governance, and how software engineering teams are evolving their practices.
Read on Dev.to ↗
A narrative take on everyday AI behaviour and what it signals about where human-AI interaction is heading.
Read on Dev.to ↗A 30-post technical series on agentic AI architecture, LangGraph patterns, blockchain compliance engineering, and production AI systems is in progress. Follow on Dev.to or LinkedIn to be notified.