Principal Backend Software Engineer

About the role

As a Principal Software Engineer at Radiant, you will be a hands-on technical leader driving the design and development of critical systems, including GPU orchestration and inference-serving infrastructure. You will set standards for engineering excellence, mentor engineers across multiple squads, and partner with infrastructure and machine learning teams to deliver high-performance AI systems. This role focuses on shaping engineering direction and architectural strategy while ensuring the reliability and scalability of core platform APIs.

Responsibilities

• Design and develop core services for the Radiant AI Cloud
• Architect and build core backend services in Go that power AI infrastructure, networking, inference orchestration, and model lifecycle management
• Lead engineering design efforts across the backend domain including architecture reviews and system evolution strategies
• Collaborate closely with platform and infrastructure to deliver reliable, secure, production-grade services
• Drive technical standards and mentorship, upholding code quality, observability, and maintainability across teams
• Proactively identify and resolve architectural bottlenecks, performance issues, or scaling challenges

Required skills

• Golang
• Cloud-native development
• Distributed systems
• APIs
• gRPC
• REST
• Kubernetes
• PostgreSQL
• CI/CD
• Observability
• Security

Nice to have

• AI/ML infrastructure
• vLLM
• KServe
• Ray
• Triton
• Python
• GPU scheduling
• Inference pipelines
• Multi-tenant systems

Benefits

• 25 days of annual leave
• Learning Time
• Private medical insurance
• Cycle to Work Scheme
• Gympass subscription
• Company shares program
• Enhanced parental pay & leave