Since we were established in 2012, headquartered in the United Kingdom, we have rapidly expanded to lead the way in technology partnerships, collaborating with numerous businesses worldwide. Location:  Flexible/Remote Working Hours: Must be available to work 9am-5pm UK time, Mon - Fri Employment Type: Contract, Full-time  About Us We are a forward-thinking software development company specializing in creating engineering teams for startups and SMEs/SMBs. Our technology-driven approach is tailored to each company's needs, ensuring we deliver innovative solutions that drive success.  The Opportunity We are seeking a talented independent contractor,  who is a seasoned senior Flutter mobile app developer (IOS/Android), to join our remote Flutter Mobile Team! The chosen candidate will be a seasoned Mobile Developer with expertise in IOS, Android, Flutter, Swift, Java, and Dart.  If you are passionate about developing mobile applications that promote socially responsible behaviors, this role provides the opportunity to create apps that positively impact people's lives, such as encouraging socially responsible actions. Come join our global team of highly talented developers and collaborate alongside like-minded peers who share your enthusiasm for making a difference! What You'll do: Develop native IOS and Android mobile applications using Flutter Work collaboratively in a multidisciplinary environment (including QA/SDETs, backend engineers, designers, product owners and layperson stakeholders) on waterfall projects and in an Agile (Scrum) team Contribute to the Flutter development team to deliver high-quality applications Translate designs and wireframes into high quality code using best practices, considering security and performance Participate in sprint planning and task estimation, taking part in crafting stories/requirements Participate in system design, documentation, and testing Collaborate with UI/UX designers to implement visually appealing and user-friendly interfaces Ensure the best possible performance, quality, and responsiveness of the application What You'll Need:  Proficiency in Dart & Swift Familiarity with Swift wrapped Objective-C and experience modifying Objective-C code  Proficiency with mobile app engineering tooling; XCode, Android Studio or Visual Studio Code and integrating simulators with tooling as part of setting up and maintaining productive development workflows Proficiency with SCM using Git & Github, including using branching and tagging functionality of Git Proficiency in testing methodologies; unit testing, widget testing and integration testing  Expert at writing well-tested, performant, scalable and reusable code Experience using third party libraries and APIs to solve complex problems via integration rather than reinventing the wheel Experience in mobile app CI/CD methodologies and intricacies including code signing, provisioning profile management, versioned build creation and releasing  Knowledge of Firebase, App Center, CodeMagic and app store submission to deliver working builds to users Experience working with other mobile app engineers, alongside others in a multidisciplinary environment (including QA/SDETs, backend engineers, designers, product owners and layperson stakeholders) on waterfall projects and in an Agile (Scrum) team Expert at communicating complex subject matter to non-technical stakeholders Experience mentoring junior mobile engineers Nice To Have: Experience in native Android app development using Java Experience integrating push notifications solutions, e.g. Airship Experience implementing event tracking solutions integrations, e.g. Mixpanel Experience implementing solutions on Google maps SDK for iOS and Android Experience integrating apps with GCP via their APIs. What We Offer: A dynamic and inclusive work environment where your contributions are valued  and encouraged. Opportunities for professional growth and development within a tech-first company.  Flexible working arrangements to support work-life balance.