10+ years delivering high-availability SaaS, shipping zero-downtime releases and boosting app performance up to 150%. Expert in Django/FastAPI/React/Vue/Angular, cloud migration, and data-driven feature design. Thrive in Agile squads, mentoring 5-8 devs and driving 20% velocity gains. Passionate about clean architecture, CI/CD, and user-centric product thinking.…

Gregory Oliver

5.0 (1 review)

10+ years delivering high-availability SaaS, shipping zero-downtime releases and boosting app performance up to 150%. Expert in Django/FastAPI/React/Vue/Angular, cloud migration, and data-driven feature design. Thrive in Agile squads, mentoring 5-8 devs and driving 20% velocity gains. Passionate about clean architecture, CI/CD, and user-centric product thinking.…

Available to hire

10+ years delivering high-availability SaaS, shipping zero-downtime releases and boosting app performance up to 150%. Expert in Django/FastAPI/React/Vue/Angular, cloud migration, and data-driven feature design. Thrive in Agile squads, mentoring 5-8 devs and driving 20% velocity gains. Passionate about clean architecture, CI/CD, and user-centric product
thinking.

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Skills

Experience Level

Vue.js
Expert
Bootstrap
Expert
Django
Expert
Docker
Expert
HTML5
Expert
JavaScript
Expert
TypeScript
Expert
AngularJS
Expert
MySQL
Expert
PostgreSQL
Expert
React JS
Expert
Tailwind
Expert
CSS
Expert
MongoDB
Expert
Kubernetes
Expert
Jira
Expert
AWS
Expert
Redis
Expert
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Language

English
Fluent

Work Experience

Senior Full Stack Developer at Haneke Design
June 1, 2025 - August 14, 2025
Partnered with client stakeholders to scope and ship 5 data-intensive single-page applications (SPAs), maintaining a 100% on-time delivery record. Led the Shipping CURA project utilizing Django and React, adding real-time shipment tracking and rate-shopping features that increased user engagement by 25% in 90 days. Improved API performance by introducing PostgreSQL partitioning, caching, and proactive alerting, reducing P95 latency by 40% and sustaining 99.9% uptime. Built a Selenium-based continuous integration pipeline that lowered defect rates by 30% and evangelized Scrum ceremonies increasing squad throughput by 20% over two quarters.
Full Stack Developer at Overflow
July 1, 2021 - August 14, 2025
Architected a core talent-matching engine achieving 90% placement accuracy and tripling monthly recurring revenue. Re-engineered microservices to improve concurrency, achieving 150% throughput and 50% latency reduction. Planned and executed AWS-to-LocalStack migration for development and testing environments, reducing costs by $120k per year and slashing setup time from hours to minutes. Refactored React bundles using code-splitting and lazy loading, improving page loads by 20% and engagement by 28%. Led A/B testing framework and real-time dashboards to support data-driven decisions.
Full Stack Developer at GE Healthcare
May 1, 2018 - August 14, 2025
Developed HIPAA-compliant APIs for a radiology workflow platform used by over 200 hospitals, processing more than 3 million records daily. Implemented FHIR-based interoperability services, reducing integration time with EMR vendors by 60%. Increased automated test coverage to 85% using RSpec and Selenium, shrinking regression testing cycles from 4 days to less than 1 day. Served as on-call responder maintaining mean-time-to-recovery under 20 minutes for priority 1 incidents.

Education

Bachelor of Science at Texas Tech University
September 1, 2009 - June 1, 2013

Qualifications

Top 30% Ruby On Rails Coder
January 24, 2019 - February 21, 2031
Top 10% React Coder
January 18, 2024 - February 13, 2032
Top 10% Python Coder
January 11, 2018 - August 14, 2030
AWS Certified Developer
January 23, 2020 - June 18, 2031

Industry Experience

Software & Internet, Healthcare, Transportation & Logistics, Education