INTL - Principal Backend Engineer

A client of Insight Global is seeking a Principal Backend Engineer who will work hands-on to design, develop, and scale their core platform, which is built with Node.js and deployed on AWS. This role requires deep technical expertise in building cloud-native, containerized microservices and experience in designing systems that are both scalable and easily extendable. This individual will contribute directly to writing code daily, collaborating with the team to build high-performance, secure, and reliable backend systems. The ideal candidate has a strong background in Node.js, microservices architecture, and AWS, with a proven track record of working in the banking and lending space or other highly regulated industries.

· 8+ years of experience in backend engineering designing and operating large-scale production systems

· Deep expertise in one or more backend ecosystems such as Python, Node.js, Go or similar

· Strong experience with distributed systems, event-driven architectures, microservices, and cloud-native design patterns

· Advanced knowledge of API architecture, asynchronous processing, service orchestration, and data-intensive systems

· Extensive experience operating cloud platforms and infrastructure at scale (AWS preferred)

· Strong understanding of observability, monitoring, reliability engineering, and operational excellence practices

· Deep understanding of software architecture, scalability, resilience, performance optimization, and security engineering

· Strong understanding of secure software engineering practices and regulatory/compliance considerations in production systems · Experience with tenant-based architecture

· Experience building AI-enabled backend systems, agentic architectures, or LLM infrastructure

· Experience with high-scale event streaming and messaging systems (SNS/SQS, RabbitMQ etc)

· Experience with data modeling, data architecture and databases in a multi-tenant architecture

· Familiarity with platform engineering and internal developer platform design

· Experience in fintech, lending, payments, or regulated enterprise environments

· Strong background in DevSecOps, infrastructure automation, and Kubernetes-based platforms