Open to opportunities

Johan Karlson

@johankarlson

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Full-stack developer specializing in cloud-native web applications and CI/CD-driven deployments.

Costa Rica

Message

What I'm looking for

I seek roles where I can build cloud-native web applications, drive CI/CD and container deployments, work with modern frontend frameworks, and grow technically in collaborative teams.

I am a dedicated full-stack developer with a Bachelor’s degree in Computer Science and hands-on experience building and maintaining cloud-hosted web applications and APIs. I have worked across frontend and backend stacks, migrating legacy apps to modern frameworks and improving system performance.

I played major roles migrating Angular.js to React, implementing CI/CD pipelines with GitHub Actions and Azure DevOps, and deploying containerized applications with Docker and Kubernetes (Rancher). I have maintained MS SQL, PostgreSQL and MongoDB databases and implemented services on Azure and AWS.

I deliver pragmatic solutions for business needs — from payment gateway integrations and scalable tooling to employee performance systems — and I seek to continue growing technically while contributing to reliable, well-architected products.

Experience

Work history, roles, and key accomplishments

Current

Full-Stack Developer

Current

EX2 Outcoding

Aug 2020 - Present (5 years 1 month)

Led migration of a major Intel application from AngularJS to React and maintained multiple web applications and APIs in C#.NET and VB.NET while managing MS SQL, PostgreSQL and MongoDB databases and Azure deployments.

React 18+AngularJS C++.NET SQL PostgreSQL MongoDB Docker Kubernetes CI CD

Software Developer

Zenziya

Jan 2020 - Aug 2020 (7 months)

Developed and maintained Angular loan-servicing applications and MVC C#.NET management software, implemented database tables and stored procedures, and participated in AWS-to-Azure migration and performance improvements.

Angular C++MVC SQL Server Azure DevOps Docker WordPress Scrum

Web Developer

2fun2me

May 2019 - Jan 2020 (8 months)

Built and maintained landing pages, websites and internal web tools using PHP, Node.js and Vanilla JS, integrated payment gateways, administered AWS console and deployed applications to EC2.