Senior Full Stack Engineer

Charles Park

Sr. Full Stack Engineer

***************@*****.*** 435-***-**** Flushing, NY, USA https://codecharley.com/ www.linkedin.com/in/charlespark4393/ github.com/charlespark4393

PROFESSIONAL SUMMARY

- Senior Full Stack Engineer with 12+ years of experience across e-commerce, healthcare and AI domains.

- Expert in Java, Python and React/TypeScript & React Native with strong cloud proficiency (AWS, Docker, Kubernetes).

TECHNICAL SKILLS

Languages: Java SE 8–21, TypeScript, JavaScript, Python

Frameworks: Spring Boot, React.js, React Native, Next.js, Redux Toolkit, Tailwind CSS, Node.js

Cloud & DevOps: AWS (EC2, S3, ECS, RDS, Lambda, CloudWatch), Docker, Kubernetes, Jenkins, GitHub Actions, Terraform, Azure, Google Cloud

Databases: MySQL, PostgreSQL, MongoDB, Redis

Testing: JUnit, Mockito, Cypress

Tools: Git, JIRA, Maven, Datadog, OpenTelemetry

Other: RESTful APIs, Microservices Architecture, CI/CD Pipelines, Agile/Scrum, SEO Optimization, Team Leadership

PROFESSIONAL EXPERIENCE

Code Charley Senior Full Stack Engineer 02/2020 – Present Greater New York City Area Remote

• Architected and delivered 4 SaaS and e-commerce platforms using Java (Spring Boot) and React/TypeScript, increasing platform reliability by 35% and handling over 200K active users.

• Designed Python-based microservices for AI inference and healthcare automation, improving data processing efficiency by 45% while maintaining HIPAA compliance.

• Built cross-platform React Native mobile extensions supporting 50K+ daily active users with offline sync and push notifications.

• Integrated Facebook, Twitter, and Instagram APIs, enhancing engagement automation and growing client social reach by 120%.

• Implemented AWS CI/CD pipelines using CodePipeline, CodeBuild, and CodeDeploy, reducing deployment time by 50% and increasing release frequency from quarterly to bi-weekly.

• Designed and implemented a scalable authentication framework using Azure AD (Active Directory), enabling single sign-on (SSO) and role-based access control (RBAC), reducing authentication issues by 30% and increasing user adoption by 25%.

• Designed and integrated GraphQL APIs, reducing data payload sizes by 50% and optimizing query performance, leading to a 35% faster page load time.

• Deployed and maintained observability solutions using Prometheus and Grafana, reducing mean time to resolution (MTTR) for critical incidents by 60% and improving uptime to 99.99%.

Flagship One, Inc Lead Engineer 04/2017 – 02/2020 College Point, NY Remote

• Directed a team of 6 engineers to build and scale Hydra2.com, a custom CRM platform integrating eBay and Magento APIs, processing over 25K daily orders.

• Developed Java (Spring Boot) microservices for dynamic pricing using Kafka and Python, increasing pricing accuracy by 35% and boosting revenue by $1.2M annually.

• Implemented a healthcare analytics engine leveraging AWS Lambda and Python for real-time clinical data insights, reducing manual reporting time by 70%.

• Designed and executed SEO initiatives that lifted organic search rankings to #2 position on Google and increased traffic by 60% - using Java and React/Typescript.

• Integrated geolocation services, QR code scanning, and payment gateways into React Native apps for end-to-end customer experience.

• Enhanced observability and uptime by implementing Datadog and OpenTelemetry, improving system availability from 95% to 99.8%.

King County Autobody Software Engineer 09/2012 – 12/2015 Brooklyn, NY Remote

• Developed a CRM system using Node.js, MySQL, and JavaScript (AngularJS), managing over 10K active customer records.

• Reduced data entry and claims processing time by 50% through automation of core workflows.

• Optimized REST APIs, reducing response latency by 40% and improving internal analytics reporting accuracy.

• Developed and optimized customer experience (CX) solutions, contributing to multi-channel communication platforms that enhanced client engagement and operational efficiency.

EDUCATION

Bachelor of Science (BS) in Computer Software Engineering

Stony Brook University 09/2008 – 05/2012 Stony Brook, NY

Conducted research and authored a paper on optimizing Google Search Engine algorithms to enhance web application visibility and ranking.

LANGUAGES

English (Fluent)

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