Hello, world! I'm Sebastian Gräf, software developer with a strong online marketing background as a professional affiliate marketer and founder. I'm making things on the web since 2003.
Contact me!

About me

I can help companies build and launch maintainable web applications and performant websites, that convert visitors into customers, in a transparent and clearly communicated way. I currently live in Asia and specialize in web application and product development with React (5 years). For my own projects I work across the full stack with Node.js. Besides tech I'm really into travelling and photography.

My availability is ~30h/week starting in November. Remote only.

German, English

Let's talk!


"I can highly recommend Sebastian. Always delivering on time, great eye for details, state of the art knowledge and use of framework and best practices (especially regarding React and GraphQL) and just overall nice to work with!"
- Alexander Barge, CTO @ deineStudienfinanzierung


Remote Contractor

Sebastian Graef LLC

03.2019 Remote

Working with German companies on an ongoing basis.

Founder & Developer

WebReports LLC

09.2020 Remote

Helping agencies and freelancers to acquire more clients with customized website audit reports. Embeddable widgets and automated PDF generation based on live test data and screenshots. Built with React and Hasura GraphQL engine in TypeScript.

Founder & Developer


10.2018 Remote

Fullstack JavaScript development of a new SaaS from scratch. heero helps brick and mortar businesses to secure more genuine online reviews. Built with React as a hybrid Gatsby app and powered by a serverless GraphQL API on AWS Lambda.

Frontend Software Engineer

Polynorm Software

- 12.2017 Zurich

Frontend development of a complex new product (PIM system with CMS, media management, classifications, import/export, clipboard...). Rewrote and restructured the first prototype from jQuery to a React app with a component-based architecture and a modern build process. Developed and improved new features, introduced JavaScript unit tests.

Managing Director & Frontend developer

enter digital ventures

- 10.2015 Remote

Frontend development and online marketing of two SaaS apps from idea to finished product. Developed two frontend applications utilizing AngularJS communicating with a custom backend API and embeddable widgets. Planned and executed a content marketing strategy resulting in thousand of social shares at launch.

Owner, Web Developer & Online Marketer

newgo media

- 09.2015 Berlin

Web development and online marketing, started while in school. Buying, selling and development of my own domain names like,, Realized about 50 small to medium-sized web projects. Professional affiliate marketing with SEM and SEO. Built, managed and monetized a domain portfolio with up to 1,500 domains.

Communications lead

START Berlin

- 09.2015 Berlin

Online Marketing, especially social media, and IT. Co-organized and promoted events, meetups, workshops and tours for founders and students interested in the Berlin startup scene and entrepreneurship.