Senior Backend Engineer

Design financial APIs at Jeeves using Go, Python, or Node.js/TypeScript while working remotely or hybrid, depending on location and department. As a Senior Backend Engineer, you will build production systems for payments, cards, spend management, and compliance. You will support customers across more than 20 countries. The work includes RESTful and GraphQL...

Affirm is seeking a Senior Software Engineer for the Consumer Authentication Platform. The role focuses on building secure, reliable authentication experiences across millions of users and merchants, spanning sign-up, sign-in, account recovery, and step-up challenges. You will lead architectural initiatives and deliver reusable authentication capabilities...

askpolly, based in Ottawa, is seeking a Senior Software Engineer to design, build, and scale production systems behind its AI-powered insights platform. This full-time role, on a hybrid schedule (4 days in-office), focuses on backend architecture with opportunities for full-stack contributions. You will own complex features from problem definition to...

The Data and Storage Services team is responsible for affirm’s data infrastructure across OLTP and OLAP systems, spanning critical online checkout databases, batch orchestration, streaming infrastructure, event-driven frameworks, BI, analytics tooling, large-scale data platforms, and agentic data tools such as semantic layers and internal platform data...

Shape reliable capacity plans with Python or Kotlin as a Senior Backend Engineer on Affirm’s remote Canada Capacity Modeling team. Forecast traffic and tune resources for peak demand. This senior position owns quarterly goals while guiding engineers through ambiguous, open-ended problems. You will build backend systems at scale using AWS, MySQL, or...

Senior Software Engineer (Full-Time, Remote) — Canada Work Schedule: 9:00 AM - 5:00 PM PST About the role At AutoScale Ventures, we build large-scale systems behind products like VinAudit.ca (vehicle history and data) and SquidProxies.com (proxy infrastructure). We're looking for a Senior Software Engineer to design, build, and evolve the backend systems...

AutoScale Ventures is seeking a Senior Software Engineer to design, build, and evolve backend systems powering data-heavy products like VinAudit.ca and SquidProxies.com. You will own key backend initiatives end-to-end, mentor peers, and collaborate on architectural decisions to improve reliability and performance. The role emphasizes autonomy and ownership,...

Affirm’s engineering team is building large-scale, fault-tolerant, global infrastructure shared across multiple financial products, merchants, and vendors. Making this infrastructure transparently available to all engineers is critical to the business. The engineering culture emphasizes blameless postmortems, detailed technical specifications, and...

Build AI platform services at Affirm using Python or Kotlin, designing reliable backend systems for production workloads at scale. Work remotely within your home country. As a Senior Backend Software Engineer, you will own technical decisions across the AI Platform team. You will build governed interfaces for models, tools, and agents while supporting...