• Development of the client's payment app.

Title: Android Developer Location: Sunnyvale United States Job Description: Job#: 3024903 Job Description: Hey, Pat From Apex here. Have a Remote Android Native First role for Apex Systems. If the below job description interested you and you believe you are the right fit from an android and bluetooth perception feel free too apply. If this is the role of your dreams and want to skip the line, just email me your resume at [email protected] Employment Type: Contract Role Overview This position is for a Senior Software Engineer focused on building a high-impact React Native Bluetooth SDK. The role involves creating a unified orchestration layer for multiple vendor-specific protocols. You will be responsible for designing and implementing the Android Bluetooth orchestration layer, simplifying complex hardware interactions, and ensuring a reliable experience for developers. This is not a standard application integration role; it requires direct experience with the BLE protocol layer and ownership of a production SDK as a product. Key Responsibilities - - Abstract vendor-specific Bluetooth protocols into a single, reliable SDK API. - Architect and implement the Android Bluetooth orchestration layer to manage concurrent vendor SDKs. - Handle complex BLE state management, pairing flows, and data throughput on the Android stack. - Work with React Native developers to expose native Bluetooth/BLE functionality to the JavaScript layer. - Own the lifecycle of a production-ready SDK, focusing on stability, API design, and backward compatibility. - Design and implement BLE communication layers, including pairing, retries, and error recovery. - Debug discovery, provisioning, and hardware-level issues in a production environment. Required Qualifications Technical Skills: - Deep proficiency in Kotlin and Java with a focus on SDK development. - Expert-level knowledge of the Android Bluetooth SDK, including GATT profiles, scanning, and connection management. - Direct experience working with the BLE protocol itself, beyond simple SDK integration. - Strong understanding of Bluetooth and BLE protocols and hardware-to-software communication. - Experience with hardware-facing Bluetooth work and packet-level debugging. - Recent ownership of a production SDK as a product, not just as an application feature. Preferred Qualifications - Hands-on experience with React Native, specifically building Native Modules or TurboModules. - Experience working directly with hardware such as payment pucks, scanner sleds, ESP32, or Raspberry Pi. - Familiarity with BLE packet tracing and low-level log analysis. We are an equal opportunity employer and welcome applications from all qualified candidates regardless of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status. Apex uses a virtual recruiter as part of the application process. Click here for more details. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Benefits Department at [email protected] or 804-523-8228. Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process. Click here for more details. Apex Benefits Overview: Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Apex team member can provide. Employee Type: Contract Location: Sunnyvale, CA, US Job Type: Date Posted: March 30, 2026 Pay Range: $60 - $70 per hour Similar Jobs - Senior Android Developer - Sr. Mobile Developer - Android - IT - IOS & Android Mobile Development - Senior - IT - IOS & Android Mobile Development - Senior - Fullstack Developer

Location: Mexico / Colombia (Colombia preferred for Global Program) Engagement: Full-Time Reporting into: Product Engineering Leadership Role Summary We are hiring a Mobile Technical Lead to anchor a global mobile delivery program focused on scaling feature velocity, improving release quality, and establishing strong version governance. This role will own mobile architecture decisions, integration strategy with Java backend systems, and release discipline across multiple geographies. This is not just a coding role — it is a delivery maturity role. Key Responsibilities Architecture Ownership - Define scalable React Native architecture - Establish modular component structure - Define API integration contracts with Java backend teams - Ensure environment-based configuration and version control governance ● Prevent codebase fragmentation across markets Release & Quality Governance - Implement structured CI/CD pipelines - Define regression testing strategy - Establish release readiness checklists - Design rollback strategies - Reduce post-release instability Delivery Velocity Enablement - Improve sprint predictability - Introduce feature flag strategy - Help product team assess complexity early - Enable rapid 1–2 week test cycles Multi-Version Control - Ensure “single source of truth” mobile codebase ● Avoid region-specific forks - Create upgrade paths for new features Cross-Regional Leadership - Work across Mexico, Colombia, US & India teams ● Mentor regional engineers - Establish documentation discipline - Drive knowledge redundancy to avoid SPOF Required Skills - 7+ years software engineering experience - 4+ years React Native (production scale) - Strong understanding of mobile architecture patterns ● Experience integrating with Java-based backend systems ● Experience with CI/CD (mobile pipelines) - Experience with mobile performance optimization ● Strong experience debugging complex production issues Strongly Preferred - Experience scaling apps across multiple markets ● Experience with consumer mobile products - Familiarity with distributed team delivery - Experience with observability and crash analytics tools ● Prior experience acting as Technical Lead What Success Looks Like - Stable, scalable mobile platform - Increased feature throughput - Reduced regression loops - Clear version governance - Predictable global release cadence

• Design and build new features for our Android application • Architect and implement reliable, intuitive solutions • Build polished, responsive UIs using Jetpack Compose • Take ownership of code quality, performance, and stability • Collaborate closely with Backend, QA, Design, and Product • Drive technical decisions within your domain • Contribute to CI/CD pipelines, tooling, and mobile best practices