Harenjaegger User

Open to opportunities

Senior Front-End Web Developer

I build scalable web applications with React, Next.js, TypeScript, and modern APIs.

NicaraguaSenior Front-End Web Developer at Tecla

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Harenjaegger User · Senior Front-End Web Developer · web2ua

About

I've built and modernized SaaS and enterprise web applications for CloudSpot, Curotec, FullStack Labs, AIM Services, and Discover Real State. Most recently at Tecla for CloudSpot, I modernized the Plans & Billing module and developed subscription and billing workflows integrated with RESTful APIs. I create end-user interfaces with Vue.js, React, Next.js, TypeScript, Tailwind CSS, and modern frontend architecture. I've also built interfaces for a Lottie animation generator and editor, enabling animation customization and content creation. Across full-stack projects, I've developed APIs and backend systems with Laravel, PHP, Express.js, and related technologies, while integrating services such as Twilio, PayPal, Firebase, Pusher, Contentful, WordPress, and GraphQL. I improve reliability through testing, accessibility work aligned with WCAG, legacy-component refactoring, and proactive bug resolution. I work closely with backend engineers, product managers, designers, and distributed teams across North America and Latin America. I also use AI-assisted tools including ChatGPT and GitHub Copilot for development, refactoring, debugging, testing, and documentation while validating generated solutions against engineering and security standards.

Experience

Senior Front-End Web Developer
Led the modernization of the Plans & Billing module using Vue.js, TypeScript, and Tailwind CSS. Developed subscription management and billing workflows integrated with RESTful APIs, and built end-user interfaces for an AI-powered Lottie animation generator and editor.
Vue.JsTypeScriptTailwindREST APIsAgileCode ReviewAI assisted DevelopmentChatGpt
Senior Web Developer
Curotec
Worked as a Full Stack Developer across multiple client projects using React, Next.js, TypeScript, and Laravel. Developed new features, redesigned user interfaces, implemented RESTful APIs, and integrated CMS like headless WordPress and Contentful.
ReactNext.jsTypeScriptLaravelREST APIsGraphQLWordPressContentfulVitestAI assisted Development
Mid-Level Web Developer
Developed and maintained client-facing applications using Next.js, React, TypeScript, and GraphQL. Implemented new features and reusable components, modified GraphQL queries, and resolved frontend issues.
Next.jsReactTypeScriptGraphQLAgile
Full Stack Developer
Led full stack development initiatives using JavaScript, PHP, Laravel, and modern web technologies. Designed and developed RESTful APIs, integrated third-party services including Twilio, PayPal, Firebase, and Pusher, and managed the full lifecycle of feature development.
JavaScriptPHPLaravelREST APIsTwilioPayPalFirebasePusherAuthenticationAuthorization
Junior Web Developer
Maintained and developed new modules for internal business applications using jQuery and PHP. Supported ongoing application enhancements and bug fixes to improve system functionality and stability.
jQueryPHP

Education

Universidad Centroamericana (UCA)
Bachelor's Degree in Systems Engineering and Communication Technologies from Universidad Centroamericana (UCA) from 2013 to 2017.
Bachelor's Degree in Systems Engineering and Communication Technologies from Universidad Centroamericana (UCA) from 2013 to 2017.

About

Experience

Senior Front-End Web Developer

Senior Web Developer

Mid-Level Web Developer

Full Stack Developer

Junior Web Developer

Education

Universidad Centroamericana (UCA)