Harvard University
Class of 2020
Bachelor of Arts in Computer Science
Cambridge, MA
Zachary Ellison
Education
Experience
Senior Backend Engineer
September 2024 -- Present
Ribbiot
Remote
- Architected backend services, APIs, and data models for an industrial operations platform, supporting scalable workflows for enterprise clients.
- Optimized CI/CD pipelines in collaboration with DevOps, reducing deployment failures by 35% and speeding delivery cycles.
- Designed modular job and task management workflows, enabling rapid client-specific customization without code changes.
- Tech: AWS, Serverless, Typescript, GraphQL, GitHub Actions, CircleCI, DataDog, SQL, Docker
Software Engineer
September 2022 -- September 2024
Notable
Remote
- Automated healthcare administration tasks using Python computer vision, reducing manual processing by 60%.
- Led a team of 5 contractors, improving iteration speed and task reliability across automation projects.
- Directed decisions on code quality and architectural patterns, resulting in 40% fewer review corrections.
- Built integrations for web payor portals using Python, Typescript, and GCP, ensuring HIPAA-compliant data ingestion.
- Tech: GCP, Typescript, Selenium, Python, Jenkins, Concourse, SQL, Docker, Jest
Software Engineer
January 2022 -- August 2022
Zagaran Inc
Boston, MA
- Refactored Django codebase, improving scalability and maintainability across multiple applications.
- Optimized database ingestion and querying, achieving 3x performance improvement.
- Tech: Django, Python3, Numpy, Postgres, Pandas, Angular, React, Node.js, AWS
Software Engineer in Test
March 2021 -- January 2022
EzeSoft, SS&C
Remote / Boston, MA
- Developed a Kubernetes-based performance testing framework, providing actionable insights to stakeholders.
- Introduced a data architecture framework to support test-driven development, improving test coverage by 50%.
- Owned integration and unit test development across services, ensuring higher code reliability.
- Tech: C#, Node.js, Jest, Jenkins, Jira, Kubernetes, C++, Tableau, AWS
Data Scientist
September 2018 -- September 2019
Activision
Boulder, CO
- Performed sentiment analysis on 600k+ users, informing product decisions and marketing strategies.
- Built ETL pipelines processing 18M+ posts with Python, Kafka, and AWS, reducing data latency by 70%.
- Developed internal analytics tools using React and Flask, improving data exploration efficiency.
- Implemented multithreaded workers using Celery and Redis to process high-volume datasets reliably.
- Tech: Python, Kafka, React, Celery, Redis, Spark, Kubernetes, Docker, AWS, MongoDB, SQL, Snowflake
Technical Skills
Languages: Typescript, Python, C/C++, Java, SQL, JavaScript, Node.js, React, Bash
Databases: Postgres, MSSQL, MySQL, Redshift, MongoDB, Elasticsearch
Architecture: Microservices, Serverless systems, Event-driven Workflows, CRUD APIs
Libraries: Flask, Django, Prisma ORM, Jest, PyTest, GraphQL, Selenium, Pandas, NumPy, scipy
Developer Tools: Git, Docker, CircleCI, Kubernetes, AWS, GCP, S3, IAM, Jenkins, claude code, opencode, roo, cline, QWEN, Codex
Interests: Backend systems design, cloud architecture, data engineering, AR/VR hobby projects, lifting, running, and yoga, sourdough baking