Expert C++ Developer for React and Mobile App Development

About UsAt Callstack, we're a team of innovators and thought leaders in cross-platform consultancy & development. Founded in 2016 by Mike Grabowski and Anna Lankauf, our mission is to drive software development innovation.We don't just follow best practices - we set them. Our collaborative approach with Meta's core contributors and innovators ensures that...

OverviewHaptiq is a global technology company that delivers cutting-edge software and digital solutions to drive growth and scalability for clients.We operate at the nexus of portfolio management, growth, and optimization, offering SaaS platforms powered by AI, end-to-end data management, and strategic services.Our flagship offerings include Olympus FinTech,...

We are seeking a highly skilled Lead Mobile Graphics Designer to join our team at On The Spot Development in Warsaw. This is an exciting opportunity for a talented designer with a passion for mobile applications and AI technology.The ideal candidate will have experience in designing captivating graphics for mobile applications, creating eye-catching app...

About this OpportunityUpvanta sp. z o.o., a pioneering tech start-up, is crafting a cutting-edge mobile social platform to revolutionize human connections. We seek an experienced Senior Fullstack Developer to play a pivotal role in building this dynamic platform using Flutter and Supabase.Key Responsibilities:Mobile App Development: Design, develop, and...

About UsAt OpsTalent, a leading outsourcing company based in Wrocław, Poland, we prioritize building strong relationships with our partners to meet their needs.Job SummaryWe are seeking an experienced part-time Mobile Developer (20-25 hours per week) proficient in developing applications for both iOS and Android platforms. The ideal candidate will have...

We are seeking a highly skilled Senior Mobile Application Developer to join our international team at ALGOTEQUE SERVICES Sp. Z O.o., based in the Netherlands.The successful candidate will be responsible for designing, developing, and maintaining native mobile applications for both iOS and Android as part of a new unified SaaS platform.This ambitious project...

We are seeking a highly skilled Senior E-Commerce Mobile Application Developer to join our team at Flying Bisons.About Us:Flying Bisons is a leading Digital Consulting & Delivery company based in Europe, with a mission to help clients Unleash Digital PotentialTM. We develop world-class digital products that drive business results for our clients.Job...

Improve Cloud Security with On The Spot DevelopmentWe are seeking a skilled Cloud Security Expert to join our team at On The Spot Development. As a Runtime Security Researcher, you will play a crucial role in enhancing our runtime security sensor using cutting-edge technologies like eBPF in Linux and Kubernetes settings.About the RoleDevelop and refine our...

At Avenga, we're looking for a skilled iOS Developer to join our team.About the JobThis is a full-time position that requires collaboration with our international development teams to build and maintain features of our Apps and SDKs. The ideal candidate will ensure proper performance and quality of the code they write and continuously participate in code...

We are seeking a highly skilled and motivated Senior Mobile Architect to lead our top-notch Mobile development group.Our company, On The Spot Development, offers an exciting opportunity for an experienced Technical Lead Android Developer to join our team.The right candidate will have the opportunity to be a meaningful part of developing a large-scale...

We are BlockLabs, a dynamic and innovative company specializing in blockchain and AI development.We are seeking an experienced Mobile Application Lead Developer to join our team.Key Responsibilities:Develop and maintain high-quality mobile applications using Flutter.Lead and mentor a small team of developers.Collaborate with designers, backend developers,...

Senior Product Manager - Mobile App (Real Estate) Wroclaw, PolandOtodom – Product /Full-time /Remote WELCOME TO OLX At OLX, we work together to build a more sustainable world through trade .We make it safe, smart, and convenient to buy and sell cars, find housing, get jobs, buy and sell household goods, and more. Our colleagues around the world help...

We are seeking a skilled Fullstack React Nest Developer to join our team at Primotly. This role offers an exciting opportunity to work on diverse projects, collaborate with international clients, and contribute to the development of cutting-edge digital solutions.As a Fullstack developer, you will be responsible for designing, building, and maintaining...

About the CompanyWe are Upvanta sp. z o.o., an innovative tech start-up that is revolutionizing how people connect and interact through our cutting-edge mobile social app.

At Callstack, we're a team of experts in cross-platform consultancy and development, specializing in React.js and React Native. We pride ourselves on being innovators and co-creators of technology, collaborating closely with the Meta team to shape the future of our industry.We're driven by a passion for software development innovation and a commitment to...

About the RoleWe are seeking a skilled .NET MAUI Developer with expertise in Microsoft ecosystem technologies to contribute to our dynamic team.Responsibilities:Develop robust mobile applications utilizing .NET MAUI or Xamarin.Design and implement WebServices using ASP.NET Core, ensuring seamless integrations.Collaborate in Agile development teams to deliver...

Unlock Your Potential as a Senior Go DeveloperAt Callstack, we're on a mission to drive and accelerate software development innovation. As a Senior Go Developer, you'll play a crucial role in shaping the technology of tomorrow.About UsWe're a top cross-platform consultancy & development company founded in 2016 by Mike Grabowski and Anna Lankauf. Our team...

Falck Digital Technology Poland is a product-focused team delivering high service and quality to its colleagues through agile-based software engineering. Our team oversees the product health, improving the tech-stack and architecture while serving business-centric solutions based on Optimizely.We are seeking an experienced Web Development Expert to join our...

Senior QA Automation Engineer RoleWe are seeking an experienced Senior QA Automation Engineer to join our team at Callstack. In this role, you will be responsible for conducting automated functional and non-functional tests on various devices supported by React Native.About the JobThis is a unique opportunity to work with the best React Native experts on...

Contract (long-term): B2B or Contract of employmentLocation: Remote within Poland Project: A global business payments and spend management system.Key Technologies:C#, .NET Core.NET microservicesJavaScript, TypeScript, ReactGraphQL, HasuraSQL Databases Project OverviewContribute to a global business payments and spend management program focused on delivering...