Open to opportunities

Andrew Berg

@andrewberg

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Senior Full Stack Developer specializing in scalable web and AI-enabled systems.

United States

Message

What I'm looking for

I seek a collaborative engineering role building scalable, secure web and AI systems with growth opportunities to lead technical teams and mentor engineers.

I am a Senior Full Stack Developer with 9+ years designing, developing, and maintaining scalable enterprise web applications across fintech, insurance, and consulting. I build secure, high-performance solutions using JavaScript, Python, and .NET and lead technical teams with a hands-on approach.

My work spans front-end and back-end technologies — React, Next.js, ASP.NET Core, Python FastAPI/Django — and cloud platforms like Azure and AWS. I have delivered microservices, CI/CD automation, API integrations, and data pipelines while improving performance, security, and maintainability.

I am passionate about generative AI and intelligent agents, having implemented RAG chatbots and integrated LLM APIs with vector stores. I mentor developers, run code reviews, and collaborate cross-functionally to deliver compliant, production-ready systems.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Paysafe

Jul 2021 - Present (4 years 3 months)

Developed full-stack payment solutions with React, Next.js and Azure, built ASP.NET Core microservices with RabbitMQ, and implemented OAuth2/JWT security and CI/CD pipelines to ensure PCI-DSS compliance and operational reliability.

React Next.js ASP.NET Core Azure RabbitMQ OAUTH2 JWT GitHub Actions

Software Developer III

Mar 2018 - Jul 2021 (3 years 4 months)

Designed multi-tenant SaaS applications with .NET 6, React and Python Flask microservices, improved API response times by 40% with EF Core optimizations, and implemented GraphQL analytics and Azure DevOps CI/CD pipelines.

React Flask API ASP.NET Core GraphQL Azure AD Azure DevOps Docker

Software Developer

CGI

Jul 2014 - Feb 2018 (3 years 7 months)

Built ASP.NET MVC portals and RESTful services for insurance and energy clients, improved portal performance by 20% through caching and query optimization, and delivered SSRS reporting solutions.