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oshino aquamarine

@oshinoaquamarine

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Senior Golang full‑stack engineer focused on cloud-native, high-performance distributed systems and team leadership.

United States

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What I'm looking for

I seek roles building cloud-native, scalable microservices where I can lead engineering efforts, improve reliability/observability, mentor teams, and drive architecture and DevOps best practices.

I am a Senior/Lead Software Engineer with over 10 years designing, building, and maintaining cloud-native microservices and high-performance distributed systems across healthcare, finance, and SaaS. I specialize in Go (concurrency, goroutines, channels), Python, C#/.NET and modern front-end frameworks, and I lead cross-functional teams to deliver reliable, observable, and scalable solutions.

My achievements include modernizing legacy monoliths into Go microservices with substantial performance and cost improvements, implementing event-driven architectures with Kafka and RabbitMQ, and building CI/CD, monitoring, and secure authentication solutions on AWS, GCP, and Azure. I write maintainable, secure code, mentor engineers, produce technical documentation, and drive best practices in architecture and DevOps.

Experience

Work history, roles, and key accomplishments

Current

Senior Golang Full Stack Engineer

Current

Expero

Dec 2021 - Present (4 years 3 months)

Led development and optimization of RESTful and gRPC microservices in Go, modernizing a monolith into microservices to achieve ~45% faster responses and ~35% infrastructure cost reduction while improving throughput and reducing latency by up to 40%.

Golang gRPC Docker Kubernetes AWS Microservices PostgreSQL Kafka CI CD

Senior Full Stack Engineer

Kinsa Health

Mar 2017 - Nov 2021 (4 years 8 months)

Developed real-time streaming pipelines and Kafka consumers/producers in Go to power fever-detection analytics, increasing event throughput by 32% and improving core module performance by 25% under high load.

Golang Kafka Protobuf PostgreSQL Docker GCP Snowflake RESTful APIs

Software Engineer

Abacus Technology

Aug 2014 - Feb 2017 (2 years 6 months)

Built gRPC and REST APIs, integrated Kafka event streaming, and enhanced web UX with Angular, resulting in a 22% increase in engagement and improved interoperability with legacy systems.

Go gRPC Kafka SOAP REST Angular C#Entity Framework Jenkins

Education

Degrees, certifications, and relevant coursework

University of Connecticut

Bachelor of Science, Computer Science

Completed a Bachelor of Science in Computer Science with coursework in data structures, operating systems, databases, software engineering, networks, and computer architecture.