Open to opportunities

rayn Dunbar

@rayndunbar

Message

Senior Backend Engineer specializing in scalable, secure cloud-native systems.

United States

Message

What I'm looking for

I seek a role building scalable, secure cloud-native platforms with strong engineering processes, mentorship, and cross-functional collaboration.

I am a Senior Backend Engineer with over 10 years building high-performance, secure microservices and data pipelines using Golang, Python, and TypeScript. I design event-driven architectures, optimize databases, and implement CI/CD and observability to deliver reliable systems at scale.

I have led architecture and platform initiatives that improved throughput, reduced latency, and increased user engagement, while mentoring engineers and collaborating with security teams to ensure compliance and rapid incident detection. I thrive in cross-functional teams delivering scalable cloud-native solutions with Kubernetes, Terraform, and modern frontend integrations.

Experience

Work history, roles, and key accomplishments

Current

Senior Backend Engineer

Current

SumatoSoft

Sep 2021 - Present (4 years 1 month)

Architected microservices and event-driven data pipelines in Golang and TypeScript, increasing throughput by 500 RPS and reducing API latency by 50ms while improving MAUs by 1,000 in three months and ensuring 99.9% uptime.

Golang TypeScript Kubernetes Terraform Kafka AWS GraphQL gRPC Prometheus

Golang Engineer

Appian

Jan 2019 - Aug 2021 (2 years 7 months)

Developed scalable Golang and Python backend services with gRPC/REST APIs, reducing latency by 50ms and accelerating CI/CD to shorten release cycles from 10 to 7 days while maintaining high security and observability.

Golang Python gRPC REST APIs Docker Jenkins PostgreSQL MongoDB RabbitMQ

Backend Engineer

Certain Affinity

Jun 2016 - Dec 2018 (2 years 6 months)

Built RESTful Golang backends and integrated frontends, improving API response times by 50ms and front-end performance by 18%, while migrating services to AWS and introducing event-sourced CQRS patterns for faster data synchronization.