Callstack
Wrocław, Poland (UTC+2)
(2)
(16)
Wrocław, Poland (UTC+2)(2)
(16)
Overview
Callstack builds AI-native cross-platform products with 10+ years of React Native leadership. Callstack delivers React Native development, End-to-end Product Engineering and Infrastructure for AI-native delivery, including self-hosted CI/CD and AI-driven QA & testing, while also providing adoption services like team training and enterprise AI governance. They specialize in React, React Native, Expo, Re.Pack and serve finance, retail & e-commerce, and media clients through an agentic delivery model.
Quick Facts
- Year Founded
- 2016
- Company Size
- 201 - 500
- Avg. Hourly Rate
- $25/hr - $49/hr
- Min. Project Size
- $25,000
Specialties
- Mobile App Architecture
- AI-Native Software Engineering
- Enterprise App Upgrades
- CI/CD & DevOps Automation
- React Native Development
- Cross-Platform App Development
- Performance Optimization
- Super App Development
- UI/UX Engineering
- Legacy Code Migration
- Enterprise AI Governance
- Technical Staff Augmentation
- React.JS
- React Native
- Javascript
- Node.JS
- Next.js
- Mobile App Architecture
- AI-Native Software Engineering
- Enterprise App Upgrades
- CI/CD & DevOps Automation
- React Native Development
- Cross-Platform App Development
- Performance Optimization
- Super App Development
- UI/UX Engineering
- Legacy Code Migration
- Enterprise AI Governance
- Technical Staff Augmentation
- React.JS
- React Native
- Javascript
- Node.JS
- Next.js
Team Experience
- < 1 Year18%
- 1-2 Years31%
- 3-5 Years40%
- 6-10 Years11%
< 1 Year
18%
Median Employee Tenure:
2.7 years
Employee Growth in last 1 year:
15%
Offerings
Services
Custom Software Development
DevOps
Mobile Application Development
AI and Machine Learning
AI-Powered Software Testing
Cloud Consulting and Services
IT Consulting
Software Product Development
Industries Served
E-commerce & Retail
Financial Services
Media
Expertise
Tech Stacks
Java
Python
React.js
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Amazon Web Services (AWS)
C#
Next.js
Node.js
PHP
React Native
Tools
Docker
Expo
Firebase
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Google Cloud Platform (GCP)
Jenkins
Jira
Linux
Magento
Microsoft SQL Server
Selenium
Storybook
Supabase
WordPress
Skills & Expertise
Agile Methodologies- Manual Testing
- Object-Oriented Programming (OOP)
- Project Management
- Software Development
- Web Development
Highlights
Notable Clients
Dialogue
Expensify
Futurewei Technologies
HANSAEMK
HelloFresh
MoMo
Awards and Certifications
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ISO 27001
Certified By: International Organization for Standardization (ISO)
Location(s)
Primary Development Center & Headquarter
Primary Development Center & Headquarter
Wrocław, Poland
50+ employees
Important Facts About Poland (PDC):
Literacy Rate- :
- 99.8%
English Proficiency- :
- High
GDP Per Capita- :
- $25,040
Income Category- :
- High