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The Replay

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The Replay is a weekly newsletter for dev and engineering leaders.

Delivered once a week, it's your curated guide to the most important conversations around frontend dev, emerging AI tools, and the state of modern software.

Recent Issues

2026

πŸ‘ shruti kapoor react image optimization
April 1: How to optimize images in React for better web performance – Shruti Kapoor, frontend educator and ex-PayPal/Slack engineer, shows why slow React apps are often an image problem, not a code problem, and how to cut LCP from ~8s to ~1.2.
πŸ‘ emmanuel john senior dev hiring
March 25: The hidden skills gap in senior dev hiring (and how to screen for it)– Emmanuel John, senior software engineer at Gigmile, breaks down the hidden skills gap in senior dev hiring and why most interviews test framework knowledge instead of real-world problem solving.
πŸ‘ ken pickering ai hiring quote card
March 18: Thinking beats coding: How to hire the right engineers in the AI era – Ken Pickering, CTO at Script Insights, explains why engineering hiring is broken in the AI era, and why clear thinking, curiosity, and problem-solving matter more than tool knowledge.
πŸ‘ ai training alexandra spalato
March 11: Your engineering team’s AI training is probably failing: How to fix it – Alexandra Spalato, full-stack dev and fractional AI officer, discusses how structured AI training helps engineering teams boost productivity and adoption.
πŸ‘ knowledge sharing techniques for engineering teams
March 4: Why engineering knowledge disappears as teams scale (and how to fight it) – Marie Starck, a veteran software engineer and team lead, outlines proven techniques for scaling knowledge across engineering teams (with real-world examples from her career).
πŸ‘ lewis angular signal forms
 Feb. 25: Signal Forms: Angular’s best quality of life update in years – Lewis Cianci, senior software developer at Queensland Health, explains why Signal Forms in Angular v21 may be the biggest QoL upgrade in years: cleaner APIs, better validation, no more ControlValueAccessor pain.
πŸ‘ andrew evans claude copilot
 Feb. 18: Can’t use Claude at work? How I recreated β€œSkills” in GitHub Copilot – Andrew Evans, principal engineer and tech lead at CarMax, shares how to recreate Claude β€œSkills” inside GitHub Copilot, using scoped instruction files to simulate domain-aware expert modes without switching tools or violating IT policies.
πŸ‘ react optimization shruti kapoor
 Feb. 11: A complete guide to React performance optimization – Shruti Kapoor, frontend educator, author, and ex-PayPal/Slack engineer, breaks down how to cut your LCP from 28s to about 1s in React, with profiling, smart bundling, SSR, lazy loading, and real performance tradeoffs that actually move metrics.
πŸ‘ ken pickering ai first organization
Feb. 4: What it actually means to be an AI-first engineering organization – Ken Pickering, CTO at Scripta Insights, explains why being β€œAI-first” isn’t about tools or features; it’s an operating model that reshapes leadership, hiring, and how engineering teams actually get work done.
πŸ‘ anna monus anti frameworkism
Jan. 28: Anti-frameworkism: Choosing native web APIs over frameworks – Anna Monus explores when frameworks are genuinely necessary, when native web APIs are enough, and how often we actually need a framework at all.
πŸ‘ jemima abu css in 2026 replacing javascript
Jan. 21: CSS in 2026: The new features reshaping frontend development – Jemima Abu, a senior product engineer and award-winning developer educator, breaks down a handful of the most exciting new CSS features and shares a tutorial for how she replaced 150+ lines of JavaScript with just a sprinkling of CSS.
πŸ‘ deterministic AI alexandra spalato
Jan. 14: How to build deterministic agentic AI with state machines – Alexandra Spalato, full-stack dev and fractional AI officer, explores how to build agentic AI with probabilistic understanding and deterministic routing using state machines.
πŸ‘ jack herrington useeffectevent
Jan. 7: React has finally solved its biggest problem: The joys of useEffectEvent– Jack Herrington, a principal software engineer and YouTuber, discusses how the new useEffectEvent Hook helps React solve its biggest problem.

2025

πŸ‘ jack herrington useeffectevent
Dec. 17: React2Shell exploit: What happened and lessons learned – 5 ways to debug, test, and ship safely – Shruti Kapoor, frontend educator, author, and Ex-PayPal/Slack engineer, breaks down the React2Shell exploit and discusses security lessons learned for dev teams.
πŸ‘ Fixing AI Generated Code
Dec. 10: Fixing AI-generated code: 5 ways to debug, test, and ship safely β€“ Andrew Evans, principal engineer and tech lead at CarMax, walks through some common issues that arise with AI-generated code – and then provides a set of patterns he uses with his team to fix them.
πŸ‘ quote card aurora scharff react async
 Dec. 3: The next era of React has arrived: Here’s what you need to know – Aurora Scharff, a senior dev consultant and React certification lead, discusses how the β€œAsync React” era signals a fundamental shift in how development teams build software.
πŸ‘ spalato pragmatic ai featured image
 Nov. 26: You don’t need AI for everything: A reality check for developers – Alexandra Spalato, full-stack dev and fractional AI officer, asks whether the smartest move isn’t to use AI, but to know when not to.
πŸ‘ Image
Nov. 19: React 19.2: The async shift is finally here – Jack Herrington, a principal software engineer and YouTuber, breaks down how new primitives turn async logic from a necessary evil into a first-class architectural feature.
πŸ‘ use effect mistakes shruti kapoor
Nov. 12: 15 common useEffect mistakes to avoid in your React apps – Shruti Kapoor, frontend educator, author, and Ex-PayPal/Slack engineer, analyzed several open-source React apps to identify the 15 most common useEffect mistakes – and fixes for each.
πŸ‘ lewis cianci quote developer elitism
Nov. 5: It’s time to break the cycle of developer elitism – Lewis Cianci, a senior developer with two decades of experience, discusses how developer elitism breaks down communication, damages culture, and forces younger devs to over-rely on AI.
πŸ‘ the future of ai agents might be SLMs
Oct. 29: Small language models: Why the future of AI agents might be tiny – Rosario De Chiara, a computer science Ph.D and innovation manager, discusses why small language models (SLMs) may outperform giants in specific real-world AI systems.
πŸ‘ graphic john reilly ai assisted development
Oct. 22: Where AI-assisted coding accelerates development β€” and where it doesn’t – John Reilly, software engineer at Investec and a contributor to ts-loader and DefinitelyTyped, discusses the nuances of how software development has been changed by the innovations of AI: both positively and negatively.
πŸ‘ jemima abu accessible ai
Oct. 15: AI has an accessibility problem: What devs can do about it – Jemima Abu, senior product engineer at CAIS, examines areas where AI falls short on accessibility and how we can best harness AI for an optimized workflow β€” while still building products that everyone can use.
πŸ‘ Image
Oct. 8: An engineer’s guide to scalable data enrichment – Alexandra Spalato, full-stack dev and fractional AI officer, shows how to transform one-off enrichment scripts into a scalable, fault-tolerant internal service. Using n8n NocoDB, Spalato walks through building a fully automated pipeline that verifies company domains, discovers decision-maker contacts, and feeds clean data directly into go-to-market tools.
πŸ‘ andrew evans headshot
Oct. 1: A spec-first workflow for building with agentic AI – What’s the best way to provide context for AI agents? The answer: establishing a β€œspec-first” workflow, according to Andrew Evans, Principal Engineer & Tech Lead at CarMax. Evans walks through a method for building a spec-first workflow using Claude Code.
πŸ‘ david turnbull claude code hacks
Sep. 24: 6 easy ways to level up Claude Code – The future of AI-assisted development isn’t just about the model you use. It’s about how you shape it to fit your team. David Turnbull, Staff Content Design Engineer at Lingo.dev, shares six tips that help you move beyond simply entering prompts into a text box.
πŸ‘ alexandra spalato ai hallucination quote
 

Sep. 17: How to stop your AI agents from hallucinating – How do you trust AI when you can’t reliably predict its output? Alexandra Spalato, full-stack developer and fractional AI officer, is using n8n to help devs move from β€œI think my AI works” to β€œI have measured its accuracy at 98% under these conditions.”

πŸ‘ shruti kapoor the modern ai stack
Sep. 10: What you actually need to build and ship AI-powered apps in 2025 – Shruti Kapoor writes about the four layers that underly every production-grade AI system: compute & foundational models, data & retrieval, deployment & orchestration, and observability & optimization.
πŸ‘ Don’t Let AI Erase The Next Generation Of Dev Leaders
Sep. 3: A dark age is coming for dev leadership if we automate away the ladder – Software engineer and YouTuber Jack Herrington warns that automating the very tasks that once taught devs how to think critically and debug in the wild could leave us without anyone to step into senior roles.