• Develop and maintain software solutions, primarily using React and Ruby on Rails • Mentor development teams to uphold high standards of code quality • Work with team leaders, product managers, and developers from the discovery phase to solution delivery • Translate business requirements into clear technical requirements • Write clean, maintainable, and efficient code • Develop and maintain unit/integration tests to ensure reliability • Participate in code reviews and promote team knowledge-sharing • Create and maintain thorough technical documentation • Debug and solve customer bugs

• At Stefanini, we believe in the power of collaboration. • We co-create innovative solutions in partnership with our clients, combining cutting-edge technology, artificial intelligence and human creativity. • We are at the forefront of solving business challenges, delivering real impact at a global scale.

Role Description As one of the first backend engineers, you will own core services powering AI voice and browser agents deployed in live production environments. You will build reliable, low-latency systems that orchestrate agent workflows, integrate with healthcare systems and third-party portals, and maintain data security standards. You will work directly with founders and ship into customer environments regularly. What You'll Do - Design and build core backend services and APIs that orchestrate AI voice and browser agents - Build integrations with EHRs, scheduling systems, and insurance/payer portals - Own reliability, observability, and performance of agent workflows in production - Partner directly with leadership on architecture, technical tradeoffs, and product direction - Help shape engineering culture, hiring, and operational practices as the team scales Qualifications - 3+ years building production backend systems, ideally in Python or TypeScript/Node - Comfort with distributed systems, queues, and event-driven architectures - Experience with cloud infrastructure (AWS or GCP), relational databases, and modern observability tooling - Strong product instinct and ownership mindset—you can scope, ship, and iterate independently Requirements - Experience with LLM agents, voice systems (telephony, ASR/TTS), browser automation, or regulated healthcare environments Benefits - Salary: $70,000–$100,000 USD, depending on experience - Equity: Founding-team equity included - Work Arrangement: Remote, LATAM-based (with US Pacific timezone overlap required) - Type: Full-time - Access: Direct collaboration with founders and real customers from day one

• Independently guide the technical direction and implementation by the whole team within defined architecture in all stages from conceptualization to deployment. • Evaluate trade-offs between correctness, robustness, performance, and customer impact to ensure the development of the right solution, with client success at the forefront. • Create and lead the team's technical documentation and repository management practices, including tasks such as creating branches, pull requests, merges, etc. • Collaborate with product, design, and engineering teams to provide necessary oversight of architecture and dependencies influencing product strategy and direction. • Contribute to code reviews, documentation, and addressing complex bug fixes with a focus on security, performance, and reliability. • Be an active leader in the Engineering Practice community, mentoring Senior Engineers and others through Communities of Practice (CoPs) or on project teams, supporting the growth of technical capabilities.