**LOCALIZA&CO** Continuous evolution has brought us to where we are today. Alongside talented individuals with diverse skills, we connect in pursuit of our shared motivation: building the future of sustainable mobility. By valuing the individuality of each person, we drive our collective movement toward extraordinary results, develop our operations, and create solutions for our customers. We are passionate about our history, our ideas, and our ability to bring them to life. We know that together, we go further. This is how we connect Localiza&Co with the future. **THE CHALLENGE** You will work on **high-volume, high-criticality systems**, where millions of transactions depend on the resilience and performance of the solutions you build. Architectural decisions you make today will impact the company for years to come. Legacy and modern systems coexist, and you’ll need to navigate between these worlds with mastery. As a **Specialist**, you will act as a **transformation agent**, going beyond individual technical excellence. Your decisions will shape the technical direction of **multiple systems and squads**. You will be responsible for identifying opportunities for architectural evolution and leading initiatives that elevate the organization’s overall technical maturity. This is a dynamic environment where complexity and constant change are part of daily life. Your technical choices directly impact customer experience, business outcomes, and the continuous evolution of the technology platform. **Responsibilities and Duties** * **Think in systems, not just code:** design scalable and resilient architectures before writing the first line, considering trade-offs among performance, cost, complexity, and time-to-market; * **Assume technical ownership beyond your team:** responsibility extending beyond individual systems, influencing architectural decisions affecting multiple teams and products, ensuring coherence and technical excellence at scale; * **Lead technical transformations:** proactively identify opportunities for architectural evolution, propose and lead modernization, strategic refactoring, and continuous improvement initiatives impacting the entire organization; * **Serve as mentor and knowledge multiplier:** develop senior engineers, disseminate deep technical knowledge, elevate the technical level of multiple teams through mentoring, code reviews, and sharing of best practices; * **Champion standards and practices:** establish technical, architectural, and quality standards; influence organizational technology and architecture decisions; serve as the company’s technical reference; * Implement complex technical solutions meeting the most challenging requirements, adhering to and defining design standards and development best practices; * Maintain and optimize existing critical systems, leading strategic refactoring of legacy code and resolving complex architectural issues; * **Translate technical decisions for the business:** clearly communicate architectural and technical impact to stakeholders at all levels, connecting technology with business vision and influencing strategic roadmaps; * Implement and foster a culture of automated testing across multiple teams (unit, integration, and end-to-end); * **Design for observability from day one:** architect systems with appropriate monitoring, tracing, metrics, and alerts; consider disaster recovery and business continuity; establish organization-wide observability standards; * Actively participate in agile software delivery cycles and ceremonies (daily stand-ups, refinement sessions, sprint reviews, retrospectives, etc.), driving process improvements; * Proactively identify organizational-scale problems, propose strategic solutions, and execute autonomously—without waiting for instructions; * Simplify processes and eliminate unnecessary complexity across multiple systems, always striving to improve quality and avoid rework through sound architectural decisions. **Requirements and Qualifications** **Experience and Technical Leadership:** * **8+ years of experience** in backend development focused on high-volume, high-criticality systems; * **Proven track record** of leading architectural and technical transformations in large-scale environments; * **Experience in technical leadership:** served as a technical reference for multiple teams, influencing strategic architectural decisions; * **Mentoring experience:** history of developing senior engineers and elevating team technical capability; **.NET Backend Development:** * Advanced expertise in backend development using the .NET platform, with emphasis on C#; * In-depth knowledge of RESTful API development and service integration practices; * Advanced production experience with GraphQL, including complex schema design and performance optimization; **Relational and Non-Relational Databases:** * Advanced experience with databases such as SQL Server, Sybase, and MongoDB; * In-depth knowledge of Aurora PostgreSQL and highly available managed databases; * Experience with Elastic Search as a database for real-time search and analytics; * Expertise in query optimization, data modeling, and sharding/partitioning strategies; * Advanced knowledge of tools such as Entity Framework and Dapper; **Messaging and Events:** * Advanced experience with messaging systems such as RabbitMQ and Kafka; * Expertise in event-driven architecture, resilient asynchronous systems, and saga patterns; * Experience designing reprocessing strategies, dead-letter queues, and delivery guarantees; **Architecture and Infrastructure:** * Extensive work with microservices-based architectures, containerization (Docker), and orchestration (Kubernetes); * Significant experience with high-volume, high-criticality systems where resilience and performance are essential; * Advanced ability to evaluate trade-offs among performance, cost, complexity, and time-to-market; * In-depth knowledge of security practices, authentication, and authorization; * Expanded systemic vision: ability to think beyond individual systems, understanding and influencing the full ecosystem; **Observability and Resilience:** * Advanced experience with DataDog for distributed monitoring, tracing, metrics, and alerts; * In-depth knowledge of disaster recovery, business continuity plans, and failover strategies; * Experience designing and establishing comprehensive observability standards from the outset; **Modern Tools:** * Daily, natural use of AI-powered coding tools — GitHub Copilot, Cursor, and * similar tools are integral to the workflow, significantly accelerating delivery; * Advanced mastery of design and architectural patterns; **Agile Methodologies:** * Solid experience with agile frameworks such as SCRUM and/or Kanban; * Ability to influence and improve agile processes; **Quality and Testing:** * Advanced knowledge of unit, integration, and automated test creation; * Experience establishing quality culture and testing standards across teams. **Additional Information** **BENEFITS FOR THIS POSITION** * Profit Sharing * Company Car * Meal Allowance * Food Voucher * Health Insurance * Dental Insurance * Gympass * Private Pension * Remote Work Allowance * Allya * Unlimited access to numerous courses from our Localiza University * Internal training and development programs * Discounts on vehicle purchase and rental **Experience what it means to be Localiza&Co—and join us in building the future of mobility!** We are one of the **world’s largest and most comprehensive mobility platforms**, integrating diverse innovative and efficient solutions. This achievement stems from the extraordinary work of over **20,000 employees** across more than **900 agencies** in Latin America. We believe movement drives transformation, which is why we encourage continuous development for our employees. **We contribute to a more sustainable, diverse, and inclusive world.** ### **THE L&CO WAY** * We develop and recognize our people by encouraging high performance * We genuinely care for one another and enjoy the journey * We build trust together through open conversations and embrace final decisions * We delight with simple, surprising warmth * We innovate based on customer needs—experimenting to evolve * We prioritize the customer and cultivate long-term relationships * We generate exceptional value with a long-term vision * We do more with less, increasing our productivity * We contribute to a more sustainable, diverse, and inclusive world * We act boldly, with grit and humility * We decide swiftly and act with responsible autonomy * We pursue excellence with simplicity ### **JOIN US AS #SANGUEVERDE** We believe in the unique value of every individual. We celebrate differences and open doors so everyone can grow and achieve their dreams. **Join us—and become part of a team that transforms opportunities into achievements!**