Open to opportunities

Alexander Hock

@alexanderhock

Message

Senior Full-Stack Engineer specializing in scalable cloud-native SaaS and Ruby on Rails.

United States

Message

What I'm looking for

I seek senior engineering roles building scalable, secure cloud-native SaaS platforms where I can lead end-to-end product delivery, improve reliability, and mentor teams in agile environments.

I am a Senior Full-Stack Engineer with 12 years building scalable SaaS products across FinTech, E‑Commerce, SoftTech, and HealthTech, driving measurable product and operational improvements. I specialize in cloud-native application development, system design for monolithic and microservices architectures, and deep hands-on expertise in Ruby on Rails, while also working with Go, Python, TypeScript, React, and modern observability and CI/CD tooling.

At recent roles I led AI-driven features integrating OpenAI and Google Cloud Speech-to-Text, architected HIPAA-compliant claims systems, and improved search and platform performance at scale by optimizing pipelines, caching, and migrations to Kubernetes. I deliver end-to-end product outcomes in fast-paced, agile startups and large developer platforms, focusing on reliability, security, and measurable business impact.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Sessions Health

Apr 2022 - Present (4 years 2 months)

Led development of AI Notes with OpenAI and Google Speech-to-Text reducing documentation time by 20%, built Telehealth & Scheduling (WebRTC, calendar sync, Twilio) raising telehealth adoption 30%, and architected HIPAA-compliant claims processing integrating Change Healthcare for 2000+ payers.

Ruby on Rails PostgreSQL AWS OpenAI WebRTC Twilio Terraform React Redis

Senior Rails Engineer

GitHub

Aug 2020 - Apr 2022 (1 year 8 months)

Integrated next-gen Code Search into the Rails monolith and React UI yielding a 40% response-time improvement, optimized search pipelines with Redis and OpenTelemetry to halve latency, and led Ruby upgrades and migration to AKS for zero-downtime releases and 20% runtime gains.

Ruby on Rails TypeScript Elasticsearch Redis OpenTelemetry Kubernetes GraphQL Go

Full-Stack Developer

Shopify

Jan 2018 - Feb 2020 (2 years 1 month)

Built event-driven microservices syncing millions of SKUs and 10k+ daily orders with Amazon, developed merchant admin UIs reducing setup time by 25%, and implemented analytics ETL pipelines with Kafka and BigQuery for near-real-time merchant insights.

Ruby on Rails Go React GraphQL Kafka BigQuery Kubernetes Docker PostgreSQL

Ruby Developer

Square

Aug 2013 - Dec 2017 (4 years 4 months)

Developed PCI-scope Rails APIs for ACH and Cash App backends, reducing manual ops by 40% and growing MAUs by 40% through secure mobile services; migrated Rails from 3.x to 4.2 and established an RSpec/Capybara CI pipeline with 80% test coverage.