Senior Full Stack Engineer

Justin Reynolds

Senior Full Stack Engineer

+1-810-***-**** 13949 Bradley Cove Rd, Jacksonville, FL 32218-8472 *****************@*******.*** Professional Summary

Full Stack Software Engineer with 11 years of experience designing, developing, and delivering scalable web applications in healthcare, fintech, and regulated environments. Proven expertise in building end-to-end solutions with strong skills in .Net Core, C#, Angular, React, Node.js, SQL, MongoDB, Docker, Kubernetes, and CI/CD pipelines. Led the development of 5+ secure microservices supporting over 1 million users, ensuring adherence to compliance and application security standards, improving system reliability by 25% and reducing server latency by 30%.

Technical Skills

Languages: C#, JavaScript, TypeScript, Java, Python, SQL Frontend Frameworks/Libraries: Angular, React, Next.js, Vue.js, Tailwind CSS Backend Frameworks: .Net Core, Node.js, Express.js, Spring Boot, Django, Flask Cloud Platforms: AWS (Lambda, EC2, S3, RDS), Google Cloud Platform (GCP), Docker, Kubernetes, Azure Tools & DevOps: Git, Jira, Jenkins, CI/CD pipelines, Kafka, BDD (Cucumber) Databases: PostgreSQL, Oracle, MySQL, MongoDB, NoSQL Testing & QA: Jest, Cypress, Mocha, Selenium, Automated Testing, CI/CD Other Technologies: REST APIs, JSON, GraphQL, Microservices, Linux Methodologies: Agile Scrum, Remote Collaboration, Test-Driven Development Professional Experience

Senior Full Stack Engineer Jan 2023 – Jul 2025

Plaid San Francisco, CA (Remote)

• Directed a 6-engineer remote team to deliver fintech SaaS APIs supporting 100+ financial institutions and 10M+ end-users.

• Architected and deployed microservices in .Net Core, C#, Java, Node.js, and AWS, improving system latency by 25% and scaling to process 50K+ transactions/sec.

• Designed and implemented a Kafka-based event-driven architecture, boosting throughput by 40% and reducing data processing delays by 200ms.

• Optimized CI/CD pipelines in GitHub, reducing release cycles by 50% (from bi-weekly to daily).

• Mentored engineers on secure coding practices, scalability, and testing, leading to 2 team promotions and a 20% reduction in production bugs.

Senior Full Stack Engineer Apr 2021 – Dec 2022

Cedar New York, NY (Remote)

• Engineered a healthcare fintech SaaS platform that processed $1B+ in annual transactions for 5M+ patients.

• Implemented Datadog-based monitoring across 10+ microservices, reducing the median resolution time of critical issues by 15 minutes, maintaining 99.99% uptime.

• Led migration efforts for 10+ services to AWS (Lambda, EC2, RDS), improving scalability by 50% during peak traffic seasons.

• Collaborated with cross-functional teams to ensure 100% HIPAA audit readiness. Full Stack Developer Jun 2019 – Mar 2021

HealthEdge Software Denver, CO (Hybrid)

• Engineered and built healthcare SaaS applications serving 2M+ users, using .Net Core, C#, Angular, and PostgreSQL.

• Spearheaded the implementation of Docker/Kubernetes infrastructure, reducing deployment time from 3 hours to under 15 minutes.

• Increased automated test coverage from 45% to 80% by implementing BDD frameworks (Cucumber, JUnit).

• Partnered with business and compliance teams to deliver 10+ features, reducing patient claim disputes by 15%. Full Stack Developer Feb 2018 – May 2019

Black Knight, Inc. Jacksonville, FL (Onsite)

• Collaborated on fintech SaaS platforms supporting 100K+ mortgage/loan transactions daily.

• Optimized SQL and Oracle queries, improving response time by 20% and saving 15 developer hours per week.

• Defined and streamlined event-driven workflows to enable real-time loan servicing for 50+ banks and lenders.

• Executed in Agile sprints to achieve 95% of releases on time, while promoting a culture of continuous improvement. Junior Full Stack Developer Aug 2014 – Dec 2017

GuideWell (Florida Blue) Jacksonville, FL (Onsite)

• Enhanced and maintained applications used by 1M+ insurance members, building intuitive front-end solutions with AngularJS and secure backend services with .Net Core, C#, and Java/Spring MVC.

• Automated data validation rules within SQL/Oracle databases, decreasing data entry errors by 20% and slashing claims processing times by 12 hours weekly; which enhanced operational efficiency.

• Strictly adhered to HIPAA compliance guidelines, passing audits with zero issues. Education

University of Central Florida (UCF) Orlando, FL

Bachelor of Science in Computer Science Aug 2009 – Jun 2014

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