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Remote Freelance Android Developer in Kellton Poland sp. z o.o.
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Kellton Poland sp. z o.o.
Who are we?
• a global team with high standards - we maintain Silicon Valley quality and vibe, even though we have spread far beyond
• we've made a real difference in the world since 2008! We deliver for Zoetis, Apple, Tesla, NATO, UNICEF, and many more
• 100-people-sized A-Team in Wrocław and across Poland, with other offices in the US, UK, and India View our website for more details and case study examples.
We're looking for you if:
• you're great at collaborating with clients
• you have a "Get shit done" attitude ✅
• you're willing to work on a B2B contract as a freelancer for 2 months minimum
• you're familiar with Accessibility guidelines
• you speak and understand English on at least a B2 level
1. Introductory meeting - we are a close-knit team, and getting to know each other is our priority!
2. Technical screen ⚙️ - after that stage, you won’t have any unanswered technical questions.
3. A meeting with your future manager.
We:
- offer participation in projects that bring a better tomorrow, for brands like UNICEF, UN, NATO, and Zoetis, to name a few
- offer in-office lunches (eg. sushi, Thai food, etc.), and the kitchen full of snacks and drinks
- organize thrilling company offsite events
- provide a modern and quiet office (incl. height-adjustable desks and chairs) and a free parking place
- contribute to open source software
- invite you to have fun in our office with darts, billiards table, table football, and PlayStation5
Ideally, you have:
- min. 3 years of commercial experience with Android
- advanced knowledge of Java and Kotlin
- extensive experience developing end-to-end Android mobile apps, including design, development, and releasing apps to marketplaces or other distribution channels
- experience in Android POS Development
- strong working knowledge of the following:
- Android SDK and Android Studio, Gradle, different versions of Android, and how to deal with different screen sizes and hardware configurations;
- Android UI design principles, patterns, and best practices;
- the open-source Android ecosystem and the libraries available for common tasks;
- MVVM, MVP and other design patterns;
- various testing strategies and frameworks;
- RESTful APIs to connect Android applications to back-end services;
- document request model, offline storage, threading, and performance optimization techniques e.g. for low-bandwidth, high-latency environments; - deep understanding of accessibility, security compliance, and the differences between delivery platforms
- experience with CI/CD pipelines
- eagerness to keep up to date with the latest mobile application best practices
- experience in solving complex flow and code architecture
- strong analytical and problem-solving skills, ability to troubleshoot issues
- a solid software development foundation including competencies in data structures, algorithms, and software design
- excellent teamwork and communication skills (written and verbal)
Nice-to-Haves:
- familiarity with NFC/RFID protocols, standards, and products
- hands-on experience in the payment domain (Credit/Debit)
- history of building EMV contactless payment applications for Android POS terminals
- other mobile development experience (iOS/HTML5/CSS/JavaScript)
- experience in Kotlin Multiplatform, React Native or other cross-platform technologies
- bachelor’s degree in Computer Science, Technology, or a related field
- experience working with clients of various portfolios from new vendors, through large corporations to innovative NGOs
- you’ve built something cool on your own because you enjoy doing what you do
- open source contributions
Who are we?
• a global team with high standards - we maintain Silicon Valley quality and vibe, even though we have spread far beyond
• we've made a real difference in the world since 2008! We deliver for Zoetis, Apple, Tesla, NATO, UNICEF, and many more
• 100-people-sized A-Team in Wrocław and across Poland, with other offices in the US, UK, and India View our website for more details and case study examples.
We're looking for you if:
• you're great at collaborating with clients
• you have a "Get shit done" attitude ✅
• you're willing to work on a B2B contract as a freelancer for 2 months minimum
• you're familiar with Accessibility guidelines
• you speak and understand English on at least a B2 level
1. Introductory meeting - we are a close-knit team, and getting to know each other is our priority!
2. Technical screen ⚙️ - after that stage, you won’t have any unanswered technical questions.
3. A meeting with your future manager.
We:
- offer participation in projects that bring a better tomorrow, for brands like UNICEF, UN, NATO, and Zoetis, to name a few
- offer in-office lunches (eg. sushi, Thai food, etc.), and the kitchen full of snacks and drinks
- organize thrilling company offsite events
- provide a modern and quiet office (incl. height-adjustable desks and chairs) and a free parking place
- contribute to open source software
- invite you to have fun in our office with darts, billiards table, table football, and PlayStation5
