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I'm a Senior Frontend Developer and Technical Lead based in Feldkirch, Austria, with 8+ years of freelance experience. I specialize in the React ecosystem (React, Next.js, TypeScript) and have delivered high-performance e-commerce platforms and enterprise web applications across healthcare, automotive, telecommunications, and logistics. I enjoy mentoring teams, defining frontend architectures, and driving performance improvements while collaborating closely with product and design to ship robust, accessible software. Fluent in German and English.…I'm a Senior Frontend Developer and Technical Lead based in Feldkirch, Austria, with 8+ years of freelance experience. I specialize in the React ecosystem (React, Next.js, TypeScript) and have delivered high-performance e-commerce platforms and enterprise web applications across healthcare, automotive, telecommunications, and logistics. I enjoy mentoring teams, defining frontend architectures, and driving performance improvements while collaborating closely with product and design to ship robust, accessible software. Fluent in German and English.

Leon Oberwaditzer

Front-End Developer, Full Stack Developer, Web Developer, +2

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I'm a Senior Frontend Developer and Technical Lead based in Feldkirch, Austria, with 8+ years of freelance experience. I specialize in the React ecosystem (React, Next.js, TypeScript) and have delivered high-performance e-commerce platforms and enterprise web applications across healthcare, automotive, telecommunications, and logistics. I enjoy mentoring teams, defining frontend architectures, and driving performance improvements while collaborating closely with product and design to ship robust, accessible software. Fluent in German and English.…I'm a Senior Frontend Developer and Technical Lead based in Feldkirch, Austria, with 8+ years of freelance experience. I specialize in the React ecosystem (React, Next.js, TypeScript) and have delivered high-performance e-commerce platforms and enterprise web applications across healthcare, automotive, telecommunications, and logistics. I enjoy mentoring teams, defining frontend architectures, and driving performance improvements while collaborating closely with product and design to ship robust, accessible software. Fluent in German and English.

Available to hire

I’m a Senior Frontend Developer and Technical Lead based in Feldkirch, Austria, with 8+ years of freelance experience. I specialize in the React ecosystem (React, Next.js, TypeScript) and have delivered high-performance e-commerce platforms and enterprise web applications across healthcare, automotive, telecommunications, and logistics.

I enjoy mentoring teams, defining frontend architectures, and driving performance improvements while collaborating closely with product and design to ship robust, accessible software. Fluent in German and English.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

German

Fluent

English

Fluent

Work Experience

Frontend Lead Developer at MassiveArt

September 1, 2024 - Present

Led 3 cross-functional projects across healthcare, telecommunications, and logistics, including greenfield implementations from scratch. Reduced error rates and improved maintainability through strategic refactoring and modernization of legacy codebases. Mentored a team of 4 frontend developers through technical workshops, code reviews, and architectural decisions.

Frontend Lead Developer at Avocodo (KTM & Husqvarna)

June 1, 2024 - September 30, 2025

Architected 3 e-commerce platforms for KTM and Husqvarna brands. Led a team of 7 frontend developers, conducted code reviews, and ensured delivery quality. Designed scalable multi-tenant architecture to support future B2C/B2E expansion. Established CI/CD pipelines using Azure DevOps and Azure Cloud. Integrated SAP Commerce OpenAPI interface, improving API management and interaction capabilities. Close alignment with stakeholders to improve product and project quality.

Full-Stack Developer at Hirschmann Automotive

June 1, 2023 - September 30, 2025

Built a 360-degree feedback platform in the automotive sector. Implemented end-to-end solution with NextJS, tRPC, PostgreSQL, and Docker. Designed anonymous GDPR-compliant feedback system and data privacy measures. Coordinated closely with customers and team members to meet project requirements.

Frontend Developer at Antiloop

December 1, 2022 - September 30, 2025

Optimized 3 e-commerce platforms using React, Redux, NextJS, and Shopware. Improved Core Web Vitals by 40%, significantly boosting SEO rankings. Managed catalog with 1M+ products and a dynamic theming system.

Full-Stack Developer at Automotive Industry

October 1, 2021 - September 30, 2025

Processed millions of manufacturing data files into a NoSQL database. Built analytics modules for measurement timelines, correlations, and acoustics analysis.

Full-Stack Developer at Fitness Industry

June 1, 2020 - September 30, 2025

Developed cross-platform mobile application using React Native. Built backend infrastructure with Node.js, PostgreSQL, and Docker.

Full-Stack Developer at Automotive Industry

June 1, 2020 - September 30, 2025

Creation of a support portal using React, C# and MSSQL. Developed a data export web application using Java and Handlebars.