Hi, I am Sebil.
Design‑driven developer and booster to your team

Freelance front-end developer with a background as a designer and +13 years of experience in agencies.

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What I offer

Frontend development

Plan and build complex web applications, optimize the performance of a website or develop a component library.

Design support

Review and apply design principles, improve the user experience of a concept or build a complete design system.

Technical consulting

Check the layout for feasibility, clearly explain technical requirements or estimate and prioritize backlog tickets.

What I can

High-quality HTML, CSS and JavaScript

I develop high-performance, accessible, state-of-the-art web applications that are search-engine optimized and carefully designed down to the last detail. It makes no difference to me whether I use a CSS or a JavaScript framework such as Tailwind or React.

Figma, Sketch, Adobe XD and Co.

To expedite the design process, I can efficiently handle tasks such as finalizing artwork, exporting and optimizing assets, and structuring components within the layout. Additionally, I offer guidance and assistance with the configuration and utilization of design tokens and systems.

Agile methods and technical writing

To ensure maximum efficiency within the team, I rely on common Scrum methods. Additionally, I am able to clearly and concisely explain complex technical issues, resulting in clear and precise documentation and instructions. The tickets I create are clean and leave no doubt.

Rapid prototyping and conception

I rapidly transform ideas into functional prototypes or concepts and provide my own creative solutions. This allows me to receive feedback early on and make iterations to achieve optimal results.

Mentoring, training and workshops

I enjoy sharing my knowledge with my team. I do this through mentoring, training and workshops, which provide a more intensive learning experience than what's possible when working on a regular basis. My commitment encourages exchange within the team. This enables individuals to reach their full potential in the long run.

Representation to stakeholders

As an external employee, I not only provide operational support to the team but also represent the client's interests in front of stakeholders. Through clear and engaging communication, I am able to build trust and ensure the success of the project.

How I work

I'm not a one-man show, I work in a team. Preferably interdisciplinary and agile. It's important to me that the group dynamics and harmony are right. I don't hope for it, I contribute to it. I am an empathetic person who responds individually to each team member. I help people to develop ideas, implement concepts and solve problems. It doesn't matter whether it's a junior, a senior or a director - I communicate on equal footing.

Major clients – major projects

To the projects

What they say

„I have worked with Sebil on many large projects over the last 7 years. Sebil is a true team player, a doer with great development power and passion for digital products.“

Thomas Feldhaus

Managing Director

@Jung von Matt

„Working with Sebil is a personal and professional enrichment: with a precise and holistic view, he contributes proactively - and always with positive vibes!“

Philip von Pless

Business Owner

@LichtBlick

„What you have achieved on Salesfive is simply phenomenal. You came across the project and immediately made it your own. You pointed things out and improved them. You rocked it from start to finish.“

Dennis Lemm

Developer