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Meet the Callstack experts

Work with us at Callstack

I joined to build robust React Native apps used by millions, and found myself surrounded by talented, friendly teammates who turn any challenge into a shared adventure.

Aleksandra Desmurs-Linczewska

Software Engineer @ Callstack

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

Thiago Brezinski

Software Developer @ Callstack

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

Monika Stotko

Finance & Administration Manager @ Callstack

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Next.js

Next.js is a comprehensive framework for React that provides a robust foundation for building modern web applications. Discover how to leverage its file-system routing, API routes, rendering optimizations, and other powerful features to create fast, scalable web applications that can complement your React Native mobile experiences.

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Beyond Static vs. Dynamic: Next.js's New Unified Model

Aurora Scharff (Crayon Consulting) explains how Next.js is moving to a unified model that ends the static/dynamic split and helps developers manage Suspense boundaries.

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Live Dev Session: Breaking Down Vercel Ship 2025

Tune in to developer reactions to Vercel Ship 2025, from AI sandboxes and bot detection to smarter compute pricing and microfrontends.

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What's New in Next.js 15

Tune in to our breakdown of everything new in Next.js 15, from React 19 and React Compiler support to Turbopack and secure Server Actions.

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Astro – Island Technology in the Name of Optimization

Next.js is the default choice, but Astro offers strong competition in some areas. Let's compare their features and differences.

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Expert EngineeringAutomotive

Migrating to Next.js for better performance and SEO

#1: SEO rank, recovering from 3-9

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Webpack & Callstack Experts' Take on Next.js Conf

Join Callstack and Webpack experts as they discuss the most interesting tech announcements from the Next.js Conf 2022.

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Integrating Next.js into your mobile strategy?

We assist teams in combining Next.js and React Native for seamless web-to-mobile 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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