We are a leader in fraud prevention and AML compliance. Our platform uses device intelligence, behavior biometrics, machine learning, and AI to stop fraud before it happens. Today, over 300 banks, retailers, and fintechs worldwide use Sardine to stop identity fraud, payment fraud, account takeovers, and social engineering scams. We have raised $145M from world-class investors, including Andreessen Horowitz, Activant, Visa, Experian, FIS, and Google Ventures.

Our Culture

We have hubs in the Bay Area, NYC, Austin, and Toronto. However, we maintain a remote-first work culture. #WorkFromAnywhere
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.

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:

We’re looking for a backend-focused Software Engineer to join the Payments Team at Sardine. In this role, you’ll help design and build the APIs, services, and systems that power our crypto onramp and offramp infrastructure. You’ll work across the stack to launch impactful features, drive scalability, and contribute to product and technical direction. This is a high-ownership, high-impact role for an engineer passionate about building reliable systems at scale.

What you'll be doing:

Build and maintain backend services for our crypto onramp/offramp platform used by hundreds of thousands of users worldwide.
Design and implement APIs and data pipelines with a focus on high availability, fault tolerance, and zero downtime.
Collaborate closely with cross-functional teams including product, compliance, and business to launch features end-to-end.
Work with partners and vendors to deliver seamless payment integrations.
Help shape the team’s technical roadmap, improve developer tooling, and optimize internal workflows.
Participate in an on-call rotation and production support to ensure system health and uptime.

What you'll bring:

5+ years of proven experience as a Software Engineer specializing in web backend development.
Proficiency in Ruby (our primary backend language on the Payments Team)
Experience building APIs, services, and data pipelines.
Strong sense of ownership, with attention to detail and a proactive attitude toward learning and improvement.
Experience in frontend development is a plus.
Proven ability to deliver high-quality, reliable systems in production environments.
A user-first mindset with strong empathy for customers and their needs.
Bonus: relevant industry experience, particularly in crypto, fintech or banking, and domain knowledge in fraud prevention or compliance.
Proficient in English - from casual chats to formal reports.

Technologies we use:

Ruby
Python
Java
Terraform
TypeScript (React + node)
Golang
Bigtable
Postgres / PostgreSQL
GCP dataflow (apache beam)
BigQuery

Compensation: Base pay range of $50,000 - $70,000 + equity with tremendous upside potential + Attractive benefits

The compensation offered for this role will depend on various factors, including the candidate's location, qualifications, work history, and interview performance, and may differ from the stated range.

Benefits We Offer

Generous compensation in cash and equity
Early exercise for all options, including pre-vested
Work from anywhere: Remote-first Culture
Flexible paid time off, Year-end break, Self care days off
Health insurance, dental, and vision coverage for employees and dependents - US and Canada specific
4% matching in 401k / RRSP - US and Canada specific
MacBook Pro delivered to your door
One-time stipend to set up a home office — desk, chair, screen, etc.
Monthly meal stipend
Monthly social meet-up stipend
Annual health and wellness stipend
Annual Learning stipend
Unlimited access to an expert financial advisory

Join a fast-growing company with world-class professionals from around the world. If you are seeking a meaningful career, you found the right place, and we would love to hear from you.