Essays by Ry Walker

Essays on AI, startups, and software engineering by Ry Walker, founder of Tembo and Astronomer.

May 1, 2026The Agent Harness Problem

Enterprise agents need layered interfaces, real software skills, and flexible platforms. The harness around the model matters more than the model.

Apr 30, 2026The Atomic Agent Mesh: Architecture, Build-vs-Buy, and the Review Layer

Enterprise AI will not be one mega-agent. It will be a mesh of atomic, auditable units, and the companies that nail review and context will own the next infrastructure layer.

Apr 29, 2026Context Engineering Is the Hard Problem

Models keep getting better, but agents without deep codebase and organizational context are just expensive autocomplete. Context engineering is the bottleneck nobody has productized.

Apr 28, 2026The Codebase Is the Territory. The Agent Needs a Map

Every quarter a new model writes marginally better benchmark code. And every quarter enterprise teams stall on the same context problems. The hard part is the engineering around the AI.

Apr 26, 2026The Operationalization Gap: Where AI Demos Go to Die

The gap between an AI demo and an AI deployment is called software engineering. Most organizations are not equipped to close it, and that is where all the value lives.

Apr 23, 2026The Algorithm Should Be Inspectable

Trust is the bottleneck for agent adoption, not capability. Hide the logic in a prompt and people stop using it. Make it inspectable code and they iterate with you.

Apr 21, 2026Sessions Replace Tasks, Runs, and Threads

When the same object has three names, your architecture is drifting. Tasks, runs, threads, chats — all of it is just a session. One container, many shapes of work.

Apr 20, 2026The Agent Is the Primitive, Not the Automation

Automations bundle trigger, prompt, tools, and model into one flat object. That works at five. It falls apart at fifty. The agent has to become its own primitive.

Apr 20, 2026Code Review Becomes the Bottleneck

When an agent ships a working PR every six minutes, you accumulate reviewable code faster than humans can process. The next wall is review, not generation.

Apr 19, 2026Automating Knowledge Work Is Software Engineering

Automating your GTM motion, vendor onboarding, or SKU rationalization is software engineering. The end user being internal does not change the discipline required.

Apr 19, 2026Start With Workflows, Not Roles

Role-based agents start with the hardest version of the problem. Workflow-first agents start small, ship in a week, and compound into something larger.

Apr 18, 2026Agents Are Software, Not Prompts

The industry treats agents as a new category. They are not. Agents are software, and the same engineering principles that have always mattered still apply.

Feb 13, 2026Rise of the Agents: An AI Coding Ecosystem Map

A visual guide to the emerging AI agent ecosystem — from foundation lab tools to enterprise in-house agents, and everything in between.

Feb 8, 2026Claude Code Just Got a Serious Upgrade, and I Can't Stop Using It

A first-hand take on Claude Code 4.6: better context retention, smarter questions, and a workflow that finally feels like real pair programming.

Feb 4, 2026Measuring Developer Performance (And Why AI Might Make It Worse)

Developer performance is hard to measure; AI adds noisy signals. A case for outcome-focused frameworks over vanity metrics.

Dec 24, 2025Put AI on Defense, Not Just Offense

Most developers use AI only to write code. The real opportunity is using AI to secure, debug, and test—deploying equal firepower on defense.

Dec 24, 2025Why "Good Enough" Code Wins

AI-assisted development has changed the economics of code quality. Teams shipping "good enough" code are moving faster than craftperfectionists.

Dec 21, 2025AI Code Is Not Slop

Humans over-engineer. Humans pick wrong abstractions. We normalized human imperfection and treat AI imperfection as disqualifying. The bar is not as high as we pretend.

Dec 19, 2025The Offense-Only Problem with AI Coding

Most developers deploy AI almost exclusively to ship features faster. The asymmetry is the problem — not the AI itself.

Dec 10, 2025I Asked 399 Developers for Their One Wish. Here's What They Said

Survey results from 399 developers reveal what's broken in modern software development: focus time, AI tools, and distribution top the list.

Sep 11, 2025The Future of AI Coding: Beyond Tools to True Autonomous Development

The three tiers of AI coding adoption: from assisted tools to autonomous background agents. Why 80% of code will be AI-written within a decade.

Sep 5, 2025Democratizing Software Engineering

AI coding is not about replacing developers. It is about expanding who can request software work in the first place — and 10x-ing total demand.

Sep 4, 2025The Three Tiers of AI Coding Adoption

AI coding adoption is happening in three distinct tiers — assisted, guided, and fully autonomous. Most teams are stuck in tier one and do not realize the gap.

Jun 11, 2025AI-First Software Development: Redefining How We Build Software

The AI-First Software Development Manifesto: 11 principles for treating AI as a true development partner, not a fancy autocomplete.