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Software Engineer @ Callstack

What I love most about Callstack is the constant opportunity to grow.

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Software Developer @ Callstack

If you're focused on development, Callstack will support and challenge you.

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Finance & Administration Manager @ Callstack

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AI

Artificial intelligence is changing how we build and maintain React and React Native apps—from code generation to testing. Find out how AI-powered tools improve your development process and help create smarter cross-platform experiences.

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Improve Your AI Coding Workflow With Cursor Tips and Tricks

Explore practical tips for working with AI coding agents, managing context, using skills, reviewing code, and choosing the right models.

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When to Use Apple Foundation Models on Mobile

Apple’s Foundation Models framework gives mobile teams a practical local-first option for short, privacy-sensitive, and low-latency tasks, while cloud models still handle the heavier work.

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Ambient Generative AI: Deploying Latent Diffusion Models on Mobile NPUs

Join Lech Kalinowski at AI Engineer Miami on April 20–21 for a talk on running offline latent diffusion models on mobile NPUs.

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How Skillgym Helps You Verify Agent Skills Still Work After Every Change

See how skillgym tests agent skills across runners, validates behavior, and catches regressions before your users do.

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Agents Commander: A Lightweight Interface for Multi-Agent CLI Workflows

Manage and connect multiple AI agents in a CLI with a simple communication protocol.

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RAG Is Dead. Long Live Context Engineering for LLM Systems

When should you skip RAG? Learn how structured context and direct LLM APIs can replace retrieval pipelines in many systems.

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Announcing Codex Plugins for React Native Development

How Codex plugins work, why they're useful for React Native development, and two plugins we built for building and testing React Native apps.

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A Practical Guide to LLM Model Naming Conventions

Learn how to read LLM naming conventions and choose the right model for your hardware. Discover what Q4, INT8, GPTQ, and GGUF mean and why models appear in multiple variants.

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React Native Evals: Measuring AI Code Quality in Practice

React Native Evals introduces a data-driven way to measure how AI coding models perform on real React Native development tasks.

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Announcing React Native Evals

We built an open-source benchmark to measure how AI coding models handle real React Native tasks, such as animations, async state, navigation, and more.

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OpenAI Codex Community Meetup - Wrocław

Join Wrocław’s first official OpenAI Codex meetup on March 5, 2026. Meet and connect with developers building with Codex.

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Callstack x Vercel AI SDK Meetup

Join the Callstack x Vercel AI SDK Meetup in Wrocław on March 4, 2026. Practical talks on building secure, production-ready AI apps.

...

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Integrating AI into your React Native workflow?

We help teams leverage AI to accelerate development and deliver smarter user experiences.

2×Estimated AI-assisted delivery speedupJetBrains
25Working days from kickoff to mergeJetBrains
1Plugin across three frameworksJetBrains
10min from code change to mini-app releaseTeamworks
multi-dailystaging deployments instead of weekly releasesTeamworks
7mini-apps supported in one modular mobile platformTeamworks
2CI/CD lanes for mini-app and host-app distributionTeamworks
2xgrowth in mobile user base during the migration periodAutoZone
4.2 -> 4.7app rating increase after migrating to React NativeAutoZone
0missed releases during the transition to React NativeAutoZone
33%fewer re-renders across most featuresQuestrade
18%faster time-to-interactiveQuestrade
-28%CPU usage in critical trading flowsQuestrade
78%bundle size reduction (from 50 MB to 11 MB)Dream11
30%faster component mount time after render optimizationDream11
60%faster initial load time enabled by switching to HermesDream11
5xfaster message sending timeExpensify
4.5xfaster search screen loading timeExpensify
#1SEO rank, recovering from 3-9AutoZone
260kBless in blocking JS payloadAutoZone
2–5xfaster feedback loopAutoZone
2.8xincrease in knowledge over 8 weeks (25% → 71% assessment scores)Hello Fresh
15developers trained across web and native backgroundsHello Fresh
86%of devs self-rated their knowledge as 3/5 or higher after training (up from 0%)Hello Fresh
130%increase in users post-upgrade7cups
63%adoption rate; majority of attendees registered in the appReact Universe App
67%of attendees connected through QR badge sharingReact Universe App
45%created personalized badges to showcase identity and goalsReact Universe App
49%of attendees onboarded before day one, arriving ready to networkReact Universe App

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