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I am a highly driven Senior Software Engineer with 12+ years of experience delivering scalable, full-stack software solutions across automotive, fintech, and AI-driven industries. I specialize in Python, JavaScript, TypeScript, React, Node.js, FastAPI, SQL, Flutter, and cloud-native architectures on AWS, GCP, and Azure. I enjoy leading teams, modernizing legacy systems, and integrating AI/ML, LLMs, and data-driven solutions. I am passionate about education and mentorship, having served as lecturer, curriculum designer, and mentor across prestigious institutions. In my work, I prioritize clean code, collaborative development, and building software that solves real problems at scale. I bring a unique blend of technical depth and leadership to drive impactful outcomes, while continually learning and sharing knowledge with colleagues and students alike.…I am a highly driven Senior Software Engineer with 12+ years of experience delivering scalable, full-stack software solutions across automotive, fintech, and AI-driven industries. I specialize in Python, JavaScript, TypeScript, React, Node.js, FastAPI, SQL, Flutter, and cloud-native architectures on AWS, GCP, and Azure. I enjoy leading teams, modernizing legacy systems, and integrating AI/ML, LLMs, and data-driven solutions. I am passionate about education and mentorship, having served as lecturer, curriculum designer, and mentor across prestigious institutions. In my work, I prioritize clean code, collaborative development, and building software that solves real problems at scale. I bring a unique blend of technical depth and leadership to drive impactful outcomes, while continually learning and sharing knowledge with colleagues and students alike.

Roger Fleenor

Full Stack Developer, Web Developer, Back-End Developer, +4

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I am a highly driven Senior Software Engineer with 12+ years of experience delivering scalable, full-stack software solutions across automotive, fintech, and AI-driven industries. I specialize in Python, JavaScript, TypeScript, React, Node.js, FastAPI, SQL, Flutter, and cloud-native architectures on AWS, GCP, and Azure. I enjoy leading teams, modernizing legacy systems, and integrating AI/ML, LLMs, and data-driven solutions. I am passionate about education and mentorship, having served as lecturer, curriculum designer, and mentor across prestigious institutions. In my work, I prioritize clean code, collaborative development, and building software that solves real problems at scale. I bring a unique blend of technical depth and leadership to drive impactful outcomes, while continually learning and sharing knowledge with colleagues and students alike.…I am a highly driven Senior Software Engineer with 12+ years of experience delivering scalable, full-stack software solutions across automotive, fintech, and AI-driven industries. I specialize in Python, JavaScript, TypeScript, React, Node.js, FastAPI, SQL, Flutter, and cloud-native architectures on AWS, GCP, and Azure. I enjoy leading teams, modernizing legacy systems, and integrating AI/ML, LLMs, and data-driven solutions. I am passionate about education and mentorship, having served as lecturer, curriculum designer, and mentor across prestigious institutions. In my work, I prioritize clean code, collaborative development, and building software that solves real problems at scale. I bring a unique blend of technical depth and leadership to drive impactful outcomes, while continually learning and sharing knowledge with colleagues and students alike.

Available to hire

I am a highly driven Senior Software Engineer with 12+ years of experience delivering scalable, full-stack software solutions across automotive, fintech, and AI-driven industries. I specialize in Python, JavaScript, TypeScript, React, Node.js, FastAPI, SQL, Flutter, and cloud-native architectures on AWS, GCP, and Azure. I enjoy leading teams, modernizing legacy systems, and integrating AI/ML, LLMs, and data-driven solutions. I am passionate about education and mentorship, having served as lecturer, curriculum designer, and mentor across prestigious institutions.

In my work, I prioritize clean code, collaborative development, and building software that solves real problems at scale. I bring a unique blend of technical depth and leadership to drive impactful outcomes, while continually learning and sharing knowledge with colleagues and students alike.

Skills

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Expert

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Intermediate

Intermediate

Language

English

Fluent

Work Experience

Senior Software Engineer at CDK Global

September 1, 2024 - November 1, 2025

Full-stack app development and AI integration for cloud-based inventory management. Implemented unit tests with Jest and Cypress, participated in code reviews to maintain high code quality, and provided technical leadership and mentorship. Stayed current with JavaScript technologies, including Vue.js and Node.js, to promote collaboration and knowledge sharing.

Senior Software Engineer Consultant at Independent Consultant

July 1, 2024 - September 1, 2024

Led integration of a proprietary Python app into a scalable cloud environment to improve 1099 form filing processes. Designed backend enhancements for IRS-related feature rollouts, optimized SQL-based data storage, and delivered cloud-native solutions across Azure, Google Cloud Platform, and AWS. Containerized applications with Docker and ensured secure handling of financial data in line with compliance standards.

Senior Software Engineer at Stella Automotive AI

April 1, 2023 - March 1, 2024

Owned multiple full-stack apps, REST APIs, and ETL pipelines as backend microservices connected to LLMs and AI/ML models. Implemented a chatGPT-like text-to-SQL report generator and a rule-based NLP semantic tag corrector. Scaled a call processing system from 100 calls/day to >20k calls/day in AWS, and designed CQRS, event-driven architectures with sharding, load-balancing, and message queues. Led data scientists and ML engineers for deployment to AWS Cloud and mentored junior engineers on deployment best practices.

Software Engineer at Cox Automotive

June 1, 2019 - March 1, 2023

Replaced legacy systems with full-stack web applications in React, Node, Next, Ruby on Rails, JavaScript, HTML, CSS, PHP, Java, and Python. Designed Flutter-based mobile apps for cross-platform deployment, and architected data warehousing schemas in Python, Rust, PostgreSQL, SQL, and MongoDB to reduce storage costs and improve data retrieval for thousands of users and hundreds of terabytes of data monthly. Implemented automated tests (Selenium, Jest, Enzyme), reducing QA time and improving CI/CD with self-healing features.

Software Engineer at Benzeen Auto Parts

June 1, 2013 - June 1, 2019

Developed a Flutter mobile app with features for scanning, photographing, and uploading auto parts images. Led a team of 10 to build a responsive web application used by >100k users/month, including real-time dashboards (SQL, Python, Tableau, Domo, Apache Superset). Migrated on-premises databases to AWS, improving security and performance, and automated ETL processes to reduce manual data handling costs.

Senior Software Engineer Consultant

July 1, 2024 - September 1, 2024

Spearheaded integration of a proprietary Python app into a scalable cloud environment, enhancing the efficiency of 1099 form filing processes. Backend enhancements for the in-house solution, targeting feature rollouts for IRS deadline. Developed and optimized database architectures using SQL. Implemented cloud-native solutions with VPCs, Linux environments, routing protocols, and authentication mechanisms. Delivered cloud solutions across major providers, including Azure, Google Cloud Platform (GCP), and AWS. Utilized Docker to containerize applications, enhancing deployment consistency and simplifying development workflows. Ensured secure handling and protection of financial and sensitive data, adhering to industry best practices and compliance standards.

Senior Software Engineer Consultant at Independent / Consultant

July 1, 2024 - September 1, 2024

Spearheaded integration of a proprietary Python app into a scalable cloud environment to streamline 1099 form filing; designed backend enhancements for IRS deadline feature rollouts; built robust SQL database architectures; containerized applications with Docker; deployed cloud-native solutions across Azure, GCP, and AWS; ensured secure handling of financial data.

Senior Software Engineer Consultant at Private Consultant

July 1, 2024 - September 1, 2024

Spearheaded the integration of a proprietary Python app into a scalable cloud environment, enhancing the efficiency of 1099 form filing processes. Backend enhancements for feature rollouts, robust database design, and cloud-native deployments across Azure, GCP, and AWS; containerization with Docker; secure handling of sensitive data.