Senior Software Engineer - Backend (Brazil)

About CharterUP. CharterUP is transforming the $450+ billion group transportation and mobility market with an AI native platform that powers modern charter, shuttle, and emerging autonomous vehicle operations. Trusted by many Fortune 500 companies, CharterUP connects enterprises, institutions, and event organizers to thousands of bus operators nationwide, while increasingly serving as the operating system for large scale shuttle and transit programs across airports, campuses, industrial sites, and major events. Through real time availability, transparent pricing, intelligent routing, and AI driven dispatch and optimization, CharterUP replaces a fragmented and opaque industry with automation, accountability, and scale. Why Join Us Innovative Impact: Be part of the team that's revolutionizing group travel, setting new standards in an industry overdue for change. Growth Opportunities: As a hyper growth company and one of the fastest-growing companies recognized by Inc., there’s no better time to join our dynamic, growth-stage organization. Driven Team: Collaborate with some of the most driven minds in tech, all while working in a remote-first environment with a tech hub in Austin, TX. Funding and Stability: Our $60 million Series A funding was just the start—we’re poised for even greater expansion, and you can be part of this exciting journey. CharterUp has achieved this growth profitability and efficiently, ensuring long-term stability. About the Role CharterUP is seeking a Senior Software Engineer – Backend to design, build, and operate the APIs and backend systems that power our mobile experience for a two-sided marketplace. This role will work closely with our Brazil-based mobile team, as well as U.S.-based engineering, product, and design partners, to deliver reliable, scalable services that enable high-quality user experiences. You’ll focus on backend service development, API design, and system reliability, helping ensure our mobile applications are fast, resilient, and able to scale with our growing business. Title: Senior Software Engineer - Backend Reports to: Engineering Manager Location: Brazil (Remote) What You’ll Do Design, build, and operate scalable backend services and APIs for mobile applications, using modern and AI-assisted development practices Partner with mobile engineers to define API contracts and deliver seamless, high-performance user experiences Own service reliability, scalability, and performance, including deployment, monitoring, and optimization in AWS Drive backend best practices across testing, observability, and operational efficiency, leveraging AI-driven tooling where appropriate Collaborate cross-functionally to deliver high-impact features and identify opportunities to improve systems and workflows through AI What You’ll Bring 4+ years of experience as a backend or full-stack engineer with a strong backend focus Proficiency in JVM-based languages (Java, Kotlin, etc.) and experience building scalable RESTful APIs Solid understanding of distributed systems, API design, and backend performance optimization Experience with cloud infrastructure (preferably AWS) and modern deployment practices, with exposure to AI-assisted tools for development, monitoring, or automation Strong ownership mindset and collaboration skills, with experience working closely with mobile or frontend teams in cross-functional environments Familiarity with the Backend-for-Frontend (BFF) pattern, including designing and maintaining mobile-optimized APIs that aggregate and tailor data for specific client use cases, improving performance and reducing client complexity Recruiting Process Step 1 - Video call: Talent Acquisition interview Step 2 - Video call: Hiring Manager interview Step 3 - Video call: Team interviews Step 4 - Offer reference check Welcome aboard! Compensation Estimated monthly rate: $6,000 – $7,000 USD Global Benefits Perks at CharterUP We believe great people can live a ... (truncated, view full listing at source)