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 – Backendto 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: Live Coding 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 anywhere—and they deserve great benefits, too. While offerings may vary slightly by location, we prioritize hiring near our hubs in Austin, Atlanta, Miami, and Denver as we grow our global team.

• Flexible Work Model: CharterUP operates as a remote-first company, with select roles requiring regular, in-office presence based on team and business needs. Role-specific expectations will be shared during the hiring process. U.S.-based employees may reside in any of our 19 approved states.

• Comprehensive Health & Wellness: Medical, dental, and vision insurance, mental health support, virtual care, gym discounts, and family-building benefits. In the U.S., we cover 100% of premiums for employees. International benefits align with local standards.

• Time Off to Recharge: Paid time off so you can truly unplug. U.S.: 15 PTO days (increasing to 20 after 2 years) + 8 paid holidays. International policies vary by country.

• Financial Peace of Mind: Company-paid life, short-term, and long-term disability insurance where available.

• Performance-Driven Culture: Join a fast-moving, ambitious, and collaborative team that wins together.

• Referral Rewards: Earn bonuses for bringing top talent to the team.

• Planning for the Future: Long-term financial planning support. U.S.: 401(k) plan. International: region-specific savings programs where applicable.

• Top-Tier Tech: Choose a Mac or PC, plus monitor, keyboard, and mouse to hit the ground running.

CharterUP is an Equal Opportunity Employer. We are committed to creating an inclusive, accessible, and respectful workplace. We consider all qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity or expression, age, national origin, ancestry, disability, medical condition, marital status, veteran status, or any other protected characteristic in accordance with applicable federal, state, and local laws in the United States and Canada. If you require accommodation during the recruitment process, please let us know. CharterUP is committed to providing reasonable accommodations during the hiring process. If you need assistance or an accommodation, please contact your recruiter.

Hiring Locations: CharterUP U.S.-based candidates and employees must reside in one of the following states: Arizona, California, Colorado, Florida, Georgia, Hawaii, Mississippi, Missouri, North Carolina, New Hampshire, Nevada, New York, Oklahoma, South Dakota, Tennessee, Texas, Utah, Washington, and Wyoming.

We hire in the U.S. and Canada and are actively expanding our global footprint.