Mobile Engineer - SDKs (Contract - US, LATAM, Spain)

This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Mobile Engineer - SDKs in US, LATAM, or Spain.In this role, you will design, build, and maintain mobile SDKs that enable developers to integrate modern financial and Web3 applications seamlessly. You will work on core functionalities such as authentication, wallets, and payment systems, ensuring SDKs are reliable, scalable, and easy to use. Collaborating closely with cross-functional teams, you will translate business requirements into technical solutions while documenting architecture and design decisions clearly. You will own projects end-to-end, mentor other engineers, and contribute to building the foundation for programmable finance and agentic commerce applications. This position is fully remote but requires alignment with ET/EST business hours, offering the flexibility to work from anywhere within the supported regions.Accountabilities:Design and architect mobile SDKs for iOS and Android platforms from the ground upDevelop core features including authentication, smart wallets, and payment systemsCollaborate with cross-functional teams to understand business requirements and deliver SDK solutionsDocument architecture, design choices, and implementation details clearly and conciselyOwn projects end-to-end, from initial concept to deployment and supportMentor team members and contribute to growing the mobile engineering teamRequirements5+ years of professional mobile software development experience in native iOS (Swift) and Android (Java/Kotlin)At least 1 year of experience specifically in mobile SDK developmentStrong communication skills in written and spoken EnglishBachelor's degree in Computer Science or related field, or equivalent industry experienceExperience with blockchain or Web3 technologies is a plus, particularly in wallets or payment systemsProven ability to deliver high-quality, maintainable code and work effectively in a team environmentOptional: Experience with React Native or FlutterBenefitsFully remote role with flexibility in work locationContractor engagement with potential for renewal or conversion to full-timeOpportunity to work on cutting-edge financial and Web3 applicationsCollaborative and inclusive work environmentProfessional growth through hands-on ownership of SDK design and developmentExposure to emerging technologies and innovative solutions in fintech and agentic commerceJobgether is a Talent Matching Platform that partners with companies worldwide to efficiently connect top talent with the right opportunities through AI-driven job matching.When you apply, your profile goes through our AI-powered screening process designed to identify top talent efficiently and fairly.🔍 Our AI evaluates your CV and LinkedIn profile thoroughly, analyzing your skills, experience, and achievements.📊 It compares your profile to the job's core requirements and past success factors to determine your match score.🎯 Based on this analysis, we automatically shortlist the three candidates with the highest match to the role.🧠 When necessary, our human team may perform an additional manual review to ensure no strong profile is missed.The process is transparent, skills-based, and free of bias — focusing solely on your fit for the role. Once the shortlist is completed, we share it directly with the company that owns the job opening. The final decision and next steps (such as interviews or assessments) are then made by their internal hiring team.Thank you for your interest!