Senior Backend Engineer

Sardine is the leading agentic risk platform for fighting financial crime. Our integrated solution unifies data across risk teams to help organizations stop fraud in real time, prevent AI-driven attacks, and automate fraud and AML operations. Sardine’s platform is strengthened by one of the fastest-growing fraud consortiums in the market, spanning more than 6 billion profiled devices, 800 million consumers, and 3 million businesses worldwide. Leading companies including FIS, GoDaddy, Intuit, Edward Jones, ZoomInfo, and Checkout.com rely on Sardine to secure and grow trust in their products. Our culture: We hire talented, self-motivated individuals with extreme ownership and high growth orientation. We value performance and not hours worked. We believe you shouldn't have to miss your family dinner, your kid's school play, friends get-together, or doctor's appointments for the sake of adhering to an arbitrary work schedule. We're a remote-first team spread across time zones, so no office to report to - work from wherever helps you do your best work. Just a couple of things to keep in mind: pay is based on where you're located, and you'll need to keep a home base in the country you're hired in. So while we love the "coffee shop today, mountains tomorrow" life, this isn't a passport-optional, work-from-anywhere-on-Earth kind of remote - think flexible within your country, not borderless. Location: Remote - Brazil To be considered for this position, you must reside in one of the following cities: São Paulo: São Paulo, Campinas, São José dos Campos Rio de Janeiro: Rio de Janeiro Minas Gerais: Belo Horizonte Paraná: Curitiba Santa Catarina: Florianópolis About the Role: As a backend-focused Senior Software Engineer, you will play a pivotal role in designing, constructing, and maintaining APIs, services, and systems across our engineering team. This multifaceted position involves developing new features on a large scale, refining internal tooling and processes, contributing to product and technical roadmaps, and assuming diverse responsibilities within the organization. The ideal candidate for the backend role will have a proven track record in building highly available APIs, with additional proficiency in data pipelines and the relevant domain. What you'll be doing: Design, create, and maintain robust, efficient, and reliable backend services to meet our platform's evolving needs. Collaborate closely with business stakeholders to architect and implement new services from inception to delivery. Contribute to developing new features and capabilities that deliver substantial value to our customers. Work with various engineering and product teams to synchronize efforts and deliver cutting-edge solutions. Craft and maintain user-facing technical documentation, enhancing user understanding and facilitating seamless adoption of our services. Play a pivotal role in shaping our company's engineering culture, ensuring the maintenance of high engineeri