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ExternalSoftware Engineering
DEV Community

Frontend System Design Interviews: What They Are, Why They Matter, and How to Actually Prepare

For mid-to-senior developers who want to stop winging it. If you've been a developer for 3+ years and you're targeting senior roles, there's a round in your upcoming interviews that will either make or break your offer — and it's not the LeetCode round. It's the Frontend System Design interview. Most developers underprepare for it. Some don't even know it exists until they're sitting in one. And if you're in the "I'll figure it out in the room" camp — this post is especially for you. The market

careerfrontendinterview
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ExternalSoftware Engineering
DEV Community

Prélakay

Prélakay: How I decided to build the digital infrastructure Haiti was missing Haiti receives over $5 billion in remittances every year. And yet — nobody knows where to buy local. A few months ago, I had a conversation that haunted me. My cousin in Montreal wanted to send money to her mother in Port-au-Prince. Not dollars through Western Union. She wanted to buy her something specific — an electronic device, a particular product. She wanted to support a Haitian seller. She wanted the money to

startupwebdevproductivity
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ExternalSoftware Engineering
DEV Community

I built a free energy calculator site with plain HTML/CSS/JS — here's what I learned in week 1

I launched EcoEnergyCalc last week — a collection of 20 free calculators for homeowners who want to reduce energy costs and carbon footprint. Solar savings, electric bills, carbon footprint, water usage, heating costs, and more. Pure HTML/CSS/JS — no framework, no build step That's it. No React, no Next.js, no database. Every calculator runs client-side with zero backend. Canonical URLs on every page Week 1 Numbers 57 users (all direct — friends and community posts) The indexing is the bottlenec

webdevjavascriptseo
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ExternalSoftware Engineering
DEV Community

Isolated Agents SDK

This is a submission for the GitHub Finish-Up-A-Thon Challenge What I Built As AI agents become more autonomous—capable of executing code, scraping the web, or modifying files—running them directly on a host machine becomes a massive security risk. This SDK provides a simple, Pythonic API (using decorators) to wrap existing agents from frameworks like LangChain, CrewAI, and AutoGPT in a secure sandbox. It enforces strict network policies, resource limits, and read-only filesystems. To me, this p

devchallengegithubchallenge
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ExternalTechnology Trends
HN RSS Best

Chipotlai Max

Article URL: https://github.com/cyberpapiii/chipotlai-max Comments URL: https://news.ycombinator.com/item?id=48363765 Points: 369 # Comments: 65

HN RSS BestRead original
ExternalSoftware Engineering
DEV Community

ExpressoTS v4 is in preview, and the new site + docs are live.

After a full 1.4 years of work, v4 is ready for developers, AI builders, and teams shipping SaaS products on Node.js. ExpressoTS gives you a solid backend foundation: DI, interceptors, typed events, guards, testing utilities, and a lightweight core engine designed to keep services structured, maintainable, and production ready. It works for experienced developers who want clean architecture, but also for founders and builders using AI to create products and businesses without ending up with a pi

nodetypescriptexpressots
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ExternalAI
AWS Machine Learning Blog

Reference your own AWS Secrets Manager secrets in Amazon Bedrock AgentCore Identity

Today, we’re excited to announce the ability to reference a secret in AWS Secrets Manager for AgentCore Identity, so you can reference your own preconfigured secret from Secrets Manager and retain full control over how it is managed. With this ability, you can extend your organization’s existing secrets governance processes to AgentCore. You can provide an existing, preconfigured AWS Secrets Manager secret to use with your credential provider resources. You retain full control over its encryptio

Amazon Bedrock AgentCoreAWS Secrets ManagerIntermediate (200)
AWS Machine Learning BlogRead original

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