With over 15 years of experience in web development, I specialise in crafting scalable and secure web solutions, focusing on React and TypeScript to deliver performant and user-friendly applications. I thrive leading frontend teams, mentoring developers, and ensuring adherence to best practices and industry standards. Collaboration is central to my work style, working closely with cross-functional teams to deliver high-quality products aligned with user needs. I am passionate about continuous learning, always exploring new technologies and tools to enhance the web experience.

KAI TOBIAS HOTZ

With over 15 years of experience in web development, I specialise in crafting scalable and secure web solutions, focusing on React and TypeScript to deliver performant and user-friendly applications. I thrive leading frontend teams, mentoring developers, and ensuring adherence to best practices and industry standards. Collaboration is central to my work style, working closely with cross-functional teams to deliver high-quality products aligned with user needs. I am passionate about continuous learning, always exploring new technologies and tools to enhance the web experience.

Available to hire

With over 15 years of experience in web development, I specialise in crafting scalable and secure web solutions, focusing on React and TypeScript to deliver performant and user-friendly applications. I thrive leading frontend teams, mentoring developers, and ensuring adherence to best practices and industry standards.

Collaboration is central to my work style, working closely with cross-functional teams to deliver high-quality products aligned with user needs. I am passionate about continuous learning, always exploring new technologies and tools to enhance the web experience.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
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Language

German
Fluent
Spanish; Castilian
Fluent
English
Fluent

Work Experience

Senior Frontend engineer (React / React-Native) at IQUIDITY Group
September 1, 2023 - Present
Led the design and implementation of scalable frontend architecture for an AI-powered financial assistant using React, TypeScript, and Socket.IO, improving data refresh latency by 30%. Migrated legacy Vue.js apps to React.js, reducing load times by 25%. Mentored 4 developers, resulting in 20% faster feature delivery. Established coding standards with ESLint and Prettier, reducing linting errors by 90%. Collaborated cross-functionally to deliver major product releases on schedule. Built and maintained reusable component library aligned with design system, speeding UI development by 40%.
Senior / Lead Frontend engineer (React / React-Native) at Wahed
August 31, 2024 - August 21, 2025
Engineered scalable frontend architecture supporting 60,000 monthly users with React, React Native, and TypeScript. Improved code quality by 70% through code reviews and optimized ESLint/Prettier. Reduced build time by 80% and improved app startup by 35%. Partnered with Product and Design teams to enable 24 releases per year with high usability. Mentored 3 junior developers and enhanced user engagement by 15%. Owned internal web apps and design systems, ensuring brand consistency with 50+ reusable components, accelerating feature delivery by 35%.
Lead Frontend engineer (React / Redux) at OryxLabs Technologies L.L.C.
July 31, 2023 - August 21, 2025
Led development of DNS Firewall protecting 30,000+ devices and cyber risk platform, improving user experience by 20%. Managed and mentored 6-person frontend team, delivering 15+ features and reducing delivery time by 30%. Established coding standards reducing linting errors by 90%. Developed and maintained 60+ reusable components, accelerating feature delivery by 65%. Delivered projects using React, Redux, and TypeScript achieving 99.9% uptime.
Lead Frontend engineer at Complevo GmbH
December 31, 2019 - August 21, 2025
Led frontend implementation of Mercedes Pro Fleet Management & Connected Services system and data tools for Daimler AG across multiple countries and languages, improving efficiency by 25%. Championed frontend best practices in Agile team, streamlining CI/CD pipelines and reducing build failures by 40%.
Senior Frontend engineer at Axel Springer Bild.de
August 31, 2017 - August 21, 2025
Maintained and developed new features for major news portals Bild.de and Sportbild.de using HTML5, SCSS, JavaScript, and jQuery. Developed MVP for editorial CMS with Node.js, React, Next.js, Redux, and GraphQL, enhancing publishing workflows. Worked in Agile team delivering features on schedule.
Senior Frontend engineer at MODOMOTO GmbH
April 30, 2017 - August 21, 2025
Maintained and enhanced e-commerce platforms Modomoto and The Cloakroom using HTML5, SCSS, JavaScript, and jQuery. Built an interactive customer questionnaire with React, Redux, increasing onboarding conversion by 25%. Collaborated in Agile team for iterative releases.
Lead Frontend engineer at DARWOFT SRL.
October 31, 2016 - August 21, 2025
Delivered 60+ responsive websites for SAB Miller US market campaigns under 12 months using HTML5, SCSS, Bootstrap, JavaScript, React.js, and Drupal. Led and mentored 12-person frontend team, improving delivery speed by 25% and reducing defects by 20%.
Full Stack PHP developer at Lutvia Medios Digitales
November 30, 2015 - August 21, 2025
Implemented and maintained websites for high-profile clients including Hilton Hotel’s Living Well Health Club, improving site speed by 35% and mobile responsiveness using HTML5, SCSS, JavaScript, PHP (Laravel), and MySQL.
Full Stack PHP developer (Freelance) at Self-employed (Chile & Argentina)
November 30, 2014 - August 21, 2025
Designed and developed 10+ custom websites for small businesses in retail, hospitality, and services sectors, improving online visibility and mobile user experience using HTML5, SCSS, JavaScript, PHP, and MySQL.
Consultant at KyS Soluciones Ltda.
January 31, 2012 - August 21, 2025
Consulted on EQUIFAX Datacentre development, optimized SQL databases to improve query performance and ensured secure, high-availability data handling for millions of customer records.
Senior Frontend engineer (React / React-Native) at IQUIDITY Group
September 1, 2023 - Present
Leading design and implementation of scalable frontend architecture for an AI-powered financial assistant with React, TypeScript, and Socket.IO, improving data refresh latency by 30%. Migrated legacy Vue.js apps to React.js reducing load times by 25%. Mentored junior/mid-level developers, speeding feature delivery by 20%. Established coding standards with ESLint and Prettier, reducing linting errors by 90%. Collaborated closely across teams to deliver major product releases on schedule. Built and maintained a reusable component library aligned with a centralized design system, cutting UI development time by 40%.
Senior / Lead Frontend engineer (React / React-Native) at Wahed
August 31, 2024 - August 21, 2025
Engineered scalable frontend architecture with React, React Native, and TypeScript supporting 60,000 monthly active users. Enforced coding best practices via code reviews and ESLint/Prettier optimization, improving code quality by 70%. Optimized app and shared component libraries enhancing build time and startup performance. Partnered with cross-functional teams enabling 24 releases per year. Mentored junior developers and developed new features improving user engagement by 15%. Owned internal web applications and main design systems ensuring brand consistency and streamlined development. Developed 50+ reusable components accelerating feature delivery by 35%.
Lead Frontend engineer (React / Redux) at OryxLabs Technologies L.L.C.
July 31, 2023 - August 21, 2025
Led development of DNS Firewall and Discovery cyber risk platform improving user experience by 20%. Mentored a 6-person frontend team, delivering 15+ new features and reducing feature delivery time by 30%. Established coding standards reducing linting errors by 90%. Developed and maintained 60+ reusable components and UI libraries accelerating feature delivery by 65%. Led full lifecycle projects with React, Redux, and TypeScript achieving 99.9% uptime in production.
Lead Frontend engineer at Complevo GmbH
December 31, 2019 - August 21, 2025
Led frontend implementation of Mercedes Pro Fleet Management & Connected Services system used in Europe, USA, and Canada in 5 languages improving operational efficiency by 25%. Championed frontend best practices in an Agile team of 8 developers and streamlined CI/CD pipelines reducing build failures by 40%.
Senior Frontend engineer at Axel Springer Bild.de
August 31, 2017 - August 21, 2025
Maintained and developed features for Bild.de and Sportbild.de ensuring high performance and responsiveness. Developed MVP for new editorial CMS in 3 months improving content publishing and workflows with Node.js, React, Next.js, Redux, and GraphQL. Collaborated in Agile team using Jira and Bitbucket to deliver features on schedule during rapid news cycles.
Senior Frontend engineer at MODOMOTO GmbH
April 30, 2017 - August 21, 2025
Maintained and added features for e-commerce platforms enhancing UX and supporting thousands of monthly transactions. Built interactive customer questionnaire with React, Redux, and Webpack improving personalization and onboarding conversion rates by 25%. Collaborated in Agile team using Jira and Bitbucket for iterative releases.
Lead Frontend engineer at DARWOFT SRL.
October 31, 2016 - August 21, 2025
Delivered 60+ responsive websites for SAB Miller’s US market brand campaigns in under 12 months with React.js, ensuring branding consistency and optimized load times. Led and mentored a 12-person frontend team, improving delivery speed by 25% and reducing defects by 20%.
Full Stack PHP developer at Lutvia Medios Digitales
November 30, 2015 - August 21, 2025
Implemented and maintained websites for high-profile clients including Hilton Hotel’s Living Well Health Club using PHP (Laravel), JavaScript, HTML5, SCSS, and MySQL improving load speed by 35% and ensuring mobile responsiveness.
Full Stack PHP developer at Freelance
November 30, 2014 - August 21, 2025
Designed and developed 10+ custom websites for small businesses across retail, hospitality, and services sectors using HTML5, SCSS, JavaScript, PHP, and MySQL enhancing online visibility and mobile experience.
Consultant at KyS Soluciones Ltda.
January 31, 2012 - August 21, 2025
Consulted on EQUIFAX Datacentre development, designing and optimizing SQL databases to improve query performance and ensure secure, high-availability data handling for millions of customer records.

Education

Web development and design at DUOC (Chile)
January 1, 2011 - January 1, 2012
Construction engineer at DUOC (Chile)
January 1, 2008 - January 1, 2010
Civil Engineering at UNAB (Chile)
January 1, 1997 - January 1, 1999
Web development and design at DUOC (Chile)
January 1, 2011 - December 31, 2012
Construction engineer at DUOC (Chile)
January 1, 2008 - December 31, 2010
Civil Engineering at UNAB (Chile)
January 1, 1997 - December 31, 1999

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Financial Services, Media & Entertainment, Retail, Professional Services, Travel & Hospitality, Transportation & Logistics