Open to opportunities

Seth Ellison

@sethellison

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Senior Full Stack Software Engineer specializing in scalable backend systems and data pipelines.

United States

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What I'm looking for

I seek roles building reliable, high-throughput backend systems in collaborative, compliance-aware teams where I can drive scalability, observability, and mentor engineers.

I am a Senior Full Stack Software Engineer with 12+ years building scalable, maintainable backend systems and data pipelines for enterprise and regulated environments. I specialize in Go, Java, Spring Boot, Ruby on Rails, and production debugging.

At recent roles I architected high-throughput API services, migrated critical services to Go microservices to reduce latency and cost, and led CI/CD and observability improvements that materially improved reliability and deployment success rates.

I have led data ingestion and stream-processing pipelines using Kafka and message queues, optimized databases and raw SQL for large datasets, and embedded HIPAA-aware security and compliance controls into development workflows.

I enjoy mentoring engineers, driving performance profiling programs, and collaborating cross-functionally to align roadmaps and deliver measurable improvements in scalability, uptime, and developer velocity.

Experience

Work history, roles, and key accomplishments

Senior Full Stack Engineer

Humana

Jul 2024 - Dec 2025 (1 year 5 months)

Led design and delivery of modular full-stack features and migrated high-traffic backend services to Go microservices, reducing median latency by 42% and lowering cost-per-request by 33% while improving deployment reliability and observability.

Go Java Spring Boot Kubernetes GitHub Actions Prometheus OpenTelemetry Docker GraphQL

Senior Software Engineer

Humana

May 2023 - Dec 2025 (2 years 7 months)

Architected high-availability backend APIs and data ingestion pipelines processing 500K+ records/hour, achieved 99.95% uptime and reduced DB query times by 63% through SQL and Hibernate optimizations.

Spring Boot Go Kafka Hibernate Terraform Kubernetes SQL Junit RSpec

Senior Software Engineer

AmeriSave Mortgage Corporation

Feb 2022 - May 2023 (1 year 3 months)

Delivered Java/Spring Boot backend services for mortgage origination, improving pipeline throughput by 35% and cutting nightly ETL from 6 hours to 90 minutes for a 150GB dataset.

Java Spring Boot Redis RabbitMQ SQL Hibernate Jenkins Docker REST APIs

Software Developer

Funeral Directors Life

Jun 2019 - Jan 2021 (1 year 7 months)

Developed Ruby on Rails APIs and GraphQL endpoints for a 200K-record policy system, improving API throughput by 29% and reducing critical report query times from 45s to under 2s through schema tuning.

Ruby on Rails GraphQL Vue PostgreSQL Kubernetes Gitlab CI Redis ELK

Software Engineer

Freelance

Nov 2017 - Jun 2019 (1 year 7 months)

Delivered end-to-end Java/Spring Boot solutions and SPAs for 12 clients, achieving 95% on-time delivery and accelerating client reporting queries by up to 70% via Postgres tuning.

Java Spring Boot Angular Docker AWS PostgreSQL Jenkins GitHub Actions OAUTH2

Senior Software Engineer

Funeral Directors Life

Jan 2013 - Nov 2017 (4 years 10 months)

Designed enterprise Java/Spring Boot systems supporting 250K+ records, led monolith-to-modular migration, increased availability to 99.9% and reduced release cadence from quarterly to bi-weekly.