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Justin O'hara

@justinohara1

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Senior Full Stack Developer with 12 years of experience.

United States

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What I'm looking for

I'm looking for a role that challenges my skills and fosters growth.

I'm a Senior Full Stack Developer with over 12 years of experience in designing, developing, and optimizing scalable enterprise applications. My expertise lies in C#, .NET Core, Angular, React, and cloud services like AWS and Azure. I focus on building high-performance systems that meet rigorous industry standards, particularly in healthcare.

Throughout my career, I've successfully led cross-functional teams to deliver innovative solutions. At Aspirus Health, I designed a scalable Electronic Health Record system that significantly improved performance and reliability. My commitment to quality and user experience drives me to implement best practices in software development, including test-driven development and Agile methodologies.

I'm passionate about mentoring junior developers and fostering a collaborative team environment. I thrive in roles that challenge my technical skills and allow me to contribute to impactful projects that enhance user experiences and operational efficiencies.

Experience

Work history, roles, and key accomplishments

Senior Full Stack Engineer

Aspirus Health

Feb 2020 - May 2025 (5 years 3 months)

Designed, built, and enhanced a scalable Electronic Health Record (EHR) system using a C#, .NET Core, Angular/React technology stack. Contributed to the overall architecture of a microservices-based architectural design based on .NET Core, Azure Kubernetes Service (AKS), and Docker-enabled ways for managing an enterprise application that provided distributed fault tolerance, allowing the solution

C++.NET Core Angular React Azure Kubernetes Service Docker Entity Framework WebSockets WebRTC Azure Active Directory GraphQL Apache Kafka ELK Stack Jenkins SonarQube Scrum Jira

Full Stack Developer

Boston Consulting Group

Jun 2016 - Dec 2019 (3 years 6 months)

Assisted in building a wealth management dashboard at WealthTrust Financial Services using ASP.NET with AWS and React. Built server-side functionality using ASP.NET Core and enabled the dashboard to retrieve, manipulate and integrate live market data through various external API integrations.

ASP.NET AWS React ASP.NET Core AWS RDS DynamoDB AWS S3 AWS Lambda

Junior Software Developer

PKWARE.Inc

Aug 2013 - May 2016 (2 years 9 months)

Involved in building REST APIs using ASP.NET Core and Azure Service Fabric Stateless Microservices, allowing for increased scalability and reliability with PKWARE's software products. Assisted in the design, development, and testing of key application features utilizing C#, .NET Core, ASP.NET Web API, and SQL to enhance the overall robustness and maintainability of PKWARE's products.

REST APIs ASP.NET Core Azure Service Fabric C++.NET Core Web APIs SQL AngularJS HTML5 CSS MongoDB WCF Entity Framework

Education

Degrees, certifications, and relevant coursework

DeVry University

Bachelor of Science, Computer Science

Studied Computer Science at DeVry University, focusing on core principles and practical applications. Completed the program from September 2009 to March 2014.