Xander Gottlieb
Verified Expert in Engineering
Front-end Developer
An expert in modern UI development, specifically React and Flutter, Xander built cross-platform, UX-focused apps that have thousands of users helped doctor’s offices in the UK and showcased by Google and Prince Charles. As head of web development for a London firm, he developed and maintained 30+ WordPress sites for companies like CBRE. Xander has also led coding workshops for eight-to-eleven-year-olds. His Stack Overflow contributions put him in the top 2%.
Portfolio
Experience
Availability
Preferred Environment
Flutter, React, GitLab, GitHub, Docker
The most amazing...
...app I've developed is the StirCrazy.app which has been featured by Google's Flutter team and has hundreds of paying customers.
Work Experience
Front-end Developer
Toptal Clients
- Remotely jumped into teams from all over the world and produced value from day 0.
- Developed bespoke WordPress themes and plugins, using my React skills to build custom Gutenberg blocks and my experience in UX to bring frictionless interactive experiences to the front end.
- Trusted with rewriting existing JavaScript, CSS/Sass, and PHP for maintainability and improved loading speed.
- Received positive feedback from every client: "You've been a huge help and the team has had nothing but great things to say. Everyone's been very impressed with both your speed and quality of work."
App Developer
Blastoff Design
- Invented, designed, and developed iOS and Android apps including Stir Crazy, Grammapp, and Concurrency. These Flutter apps have been featured by Google and now have thousands of happy users — and successful monetization strategies.
- Collaborated with doctors across the UK to bring a cross-platform Flutter app to 300,000+ patients. Provided each doctors office with a comprehensive, easy-to-use dashboard (written in React and making full use of React hooks).
- Helped 1,000+ children learn maths by volunteering my Flutter skills to numberline.school: a cross-platform Android/iOS/web app which is being rolled out in classrooms across Europe.
- Directed small teams of illustrators, translators, and designers to bring mobile apps to life.
Head of Web Development
Think Digitally
- Promoted within two years to head of web development, responsible for developing, maintaining, and hosting over 30 WordPress websites.
- Contributed to both designs and code to a region-dependent blog, a digital health tracker built with React, and close to a hundred bespoke WordPress themes/plugins for industries from real estate to eCommerce.
- Maintained strong relationships with clients (including CBRE and Ogilvy) and strategized for practically every project that crossed the company’s desk.
Digital Marketing Consultant
Towergate Insurance
- Learned from a large, multidisciplinary team of specialists with skills ranging from development, to design, to pay-per-click advertising.
- Automated much of the SEO team's workload by writing custom web crawler scripts for keyword mining.
- Developed a new approach to the company’s online forms — devising an intuitive user interface and JavaScript validation which measurably reduced abandonment.
Designer | Developer
Freelance
- Created bespoke WordPress themes/plugins, and interactive CSS/JavaScript animations, for Spider PR UK — enlivening an array of websites and digital adverts.
- Implemented a WordPress dashboard for monitoring the national rollout of a startup internet service provider.
- Consulted for Evora Global on digital design and marketing, conducting UX and SEO site audits, which helped grow their mailing list and reach the front page of Google.
Experience
ReputationManagement.com
https://www.reputationmanagement.com/Designed and developed custom content blocks that had to be as easy to manage in the dashboard as they were visually appealing on the front end.
Grammapp: German Grammar
https://grammapp.com/Fast, intuitive swipe gestures and innovative color-coding are now making German grammar more accessible to 2000+ learners every month.
Help @ Hand
Help @ Hand is a cross-platform Flutter app that connects patients with local support groups and wellness activities. The app is managed via a secure React dashboard with real-time collaboration and minute-by-minute version history (enhanced by React hooks and event sourcing).
As seen on Prince Charles's Instagram!
Interactive Popcorn Simulation
The accompanying tutorial for simulating 2D physics in JavaScript using Matter.js has reached 13,000+ readers and counting.
Skills
Languages
JavaScript, HTML, CSS, PHP, Sass, TypeScript
Frameworks
Flutter
Libraries/APIs
React, Liquid
Tools
Gutenberg Editor
Paradigms
Search Engine Optimization (SEO), Responsive
Platforms
WordPress, WooCommerce, Android, iOS, Docker
Other
User Experience (UX), Mobile Apps, Page Speed Optimization, eCommerce, UI Animation, Natural Language Processing (NLP), GPT, Generative Pre-trained Transformers (GPT)
Industry Expertise
Marketing, Healthcare
Education
Bachelor of Science Degree in Computer Science with Philosophy
Durham University - Durham, UK
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