Sebastian Wasser
Verified Expert in Engineering
Software Developer
Sebastian started working professionally as a software developer before finishing high school. This drive to apply his skills to solve problems jump-started his career, and to this day, it is the same driving force that he applies to his work every day. Sebastian excels in coming up with unconventional solutions to client problems: his clients' success is his ultimate goal.
Portfolio
Experience
Availability
Preferred Environment
Docker, Zsh, Google Chrome, Visual Studio Code (VS Code), MacOS
The most amazing...
...thing I developed was a highly configurable image management platform for managing product images in different shapes for various marketplaces with one click.
Work Experience
Senior Full-stack Developer
Self-employed
- Developed several different applications and tools depending on client needs.
- Tracked and fixed bugs using a self-hosted GitLab instance.
- Supported and offered consultation to various clients to meet their technical needs.
- Guided transition clients from legacy systems to more modern ones, including data migrations.
- Found unconventional solutions to clients' niche problems.
Full-stack Developer
Dirtbikexpress Ltd.
- Scoped the project after assessing the initial list of required features and proposed improvements based on those features.
- Established clear development flows to be incorporated with the development team and the business stakeholders, e.g., Jira for ticketing and Bitbucket with a well-defined Git flow for source code management.
- Gave UX and UI improvement tips for the storefront to maximize the conversion rate.
- Implemented eCommerce storefront from start to finish, including clever solutions for more specific business needs.
- Implemented large parts of the back-end functionality and the warehousing management software (including order fulfillment) for the company's employees.
Lead Developer | Independent Contractor
Revive GmbH
- Developed many small and medium-sized applications and tools to improve workflows and increase efficiency in every part of the company.
- Advised the management on technical decision-making and steps to take.
- Oversaw major platform and data migrations when the existing solutions stopped being viable due to the company's growth.
- Moved their webshop from WooCommerce as a platform to Shopify.
- Tweaked the existing Shopify theme to do exactly as the client wanted, including previously completely unsupported features.
CTO and Full-stack Developer
German Angel Initiative gUG (haftungsbeschränkt)
- Conceptualized and developed an application to aid the onboarding process for prospective members.
- Worked closely with all stakeholders to create an intuitive and productive tool.
- Reacted swiftly to required changes while the company was evolving and growing.
PHP Developer
R&E Media
- Developed and maintained a WordPress instance to serve over 6 million monthly active users worldwide.
- Tracked and fixed bugs reported by the internal team in YouTrack initially and later in Jira.
- Developed and maintained data importers, crawlers, and other means of fetching data, which were then processed and integrated into a WordPress-based system.
- Helped maintain the internal infrastructure, especially with regard to the Git server on the in-house server.
Experience
Product Image Management Platform
I was tasked with the development of an app to automatically detect a product images core (the product itself), categorize it and crop and scale the image according to per-marketplace based, differing configurations, and add various necessary overlays, such as product manufacturer logos, category, and product-specific text overlays and more.
The app had to be as automated as possible while retaining the highest possible flexibility regarding the image size, overlays, and positioning on the marketplace. Additionally, it had to be as performant as possible, not collapse users' browsers, and not overuse their internet bandwidth when uploading the images and maintaining (after saving) them.
Custom eCommerce Storefront and Warehousing Software
Purchase Form
Minesweeper Game
https://github.com/sebwas/minesweeperEducation
Coursework in Computer Science
Rheinische Friedrich-Wilhelms-Universität Bonn - Bonn, Germany
Certifications
Certified Laravel Developer
Laravel LLC
Skills
Libraries/APIs
Vue, React, REST APIs, jQuery, Vuex, Node.js, Liquid, Google Vision API, Flexbox, React Router, Braintree API, Inertia, Shopify API
Tools
Git, GitHub, JavaScript Testing, GitLab CI/CD, NGINX, Composer, NPM, Figma, Jira
Frameworks
Laravel, Nuxt.js, Tailwind CSS, Next.js, Redux, Lumen, Jest, Cypress
Paradigms
Object-oriented Programming (OOP), REST, Agile Software Development, Unit Testing, Search Engine Optimization (SEO), Responsive Web Design (RWD), Testing, DevOps, Kanban, Scrum
Languages
JavaScript, PHP, TypeScript, HTML, CSS, HTML5, CSS3, PHP 7, SQL, Liquid Template, XML, Bash, CSS2, ECMAScript (ES6), GraphQL
Storage
JSON, MySQL, PostgreSQL
Platforms
WordPress, Linux, Shopify, Docker, DigitalOcean, Amazon Web Services (AWS), MacOS
Other
Full-stack, PHP 8, Back-end, Web Development, DOM, API Integration, Front-end, RESTful Services, Web Scraping, Vue Router, i18n, APIs, Data Structures, Shopify Theme, Shopify Customizations, RESTful Web Services, Full-stack Development, Back-end Development, Integration Testing, SEO Tools, Themes, eCommerce, Mobile First, Content Management Systems (CMS), Affiliate Marketing, Coupons, Single-page Applications (SPA), Semantic UI, Server Administration, Service Workers, Laravel Nova, Deno, Blade Templates, Vite, Apple Pay, Klarna, Shopify Design, Project Management & Work Tracking Tools, Payment APIs, Online Payments, CI/CD Pipelines, Architecture, Mobile Apps, User Experience (UX), User Interface (UI), UI Testing, PWA, Progressive Web Applications (PWA), Algorithms
How to Work with Toptal
Toptal matches you directly with global industry experts from our network in hours—not weeks or months.
Share your needs
Choose your talent
Start your risk-free talent trial
Top talent is in high demand.
Start hiring