Hey there,

My name is Daniel Fosco and I design systems that enable people to work, code and collaborate online.

Recently, I have been focusing on Developer Experience, creating tools and platforms that enable developers to write and deploy their code with ease.

I'm currently a Senior Product Designer at Miro, building a public developer platform on top of the collaboration tool used by 45+ million customers.

Before this, I worked at GitLab, where I redefined environment management and deployment approvals for the Release product.

Prior to that, I led developer experience and built design systems in the Core Infrastructure department at Booking.com.

Recent Work

Developer Experience

Working in the Core Infrastructure group at Booking.com, I lead the design of developer tools for deployments, virtualization, reliability, databases, monitoring, and more.

My process included the entire design and development flow: defining scope with product managers, running user research and discovery sessions, designing screens & flows, and collaborating with engineers on implementation.

I also worked on the department level to improve research, usability and navigation across all developer products, collaborating with multiple teams in the process.

Daniel is a definition of overachiever. He is a UX researcher, Product Manager, Stakeholder manager and Designer = all in one.

He loves what he does, and it shows - the energy and love he gives products he builds is infectious. He never leaves things as he found them: from design process, in-depth research or feature improvement ideas.
Maria Scerbikova – Group Product Manager

Booking.com

Developer Console

Developer Console is a structured directory of all developer tools at Booking. It was created to improve discovery and navigation across tools, while also improving usability horizontally.

The project was backed by extensive user research, and designed in a way it could be integrated in any existing tool by its owners, regardless of technical stack.

Today, the console lists 70+ tools and is integrated in 20+ clients across the company, reaching more than 95% of the developer user base.

Role

UX Research
UX Design
UI Design
Front-end Development

Integration docs for developer console widget

Slide with summary from Dev Experience design sprint

Example slide from dev experience design sprint

Booking.com

UX Research Practice

A lot of my time in the Developer Experience track was dedicated to make research and discovery first-class citizens on every project I worked on.

Conducting user and stakeholder interviews, usability tests, surveys and discovery workshops was the bread and butter of my research work.

To make sure research results would actualy impact the projects, we invited developers into sessions, communicated results to the community and held open-sessions where any team could come to us for guidance and design help.

Role

UX Research
Workshop Facilitation
Stakeholder Management

Document with blurred summary of Roadmap Workshop

Document with blurred summary of Product Discovery Workshop

Document with blurred summary of Stakeholder Interviews

Document with blurred summary of Usability Testing

Booking.com

VM Provisioning

The VM Provisioning Portal enables developers to create, update and maintain their VMs. Built in 2018, the project now required an iteration to match the needs of the new underlying VM infrastructure.

After interviewing stakeholders and understanding the requirements, I redesigned the interface to allow users to run multiple changes to their VMs in batch, queue multiple batches, and manage resource quotas.

To make sure the UI was kept in sync with the back-end, multiple states were designed, and the final components and behaviours were documented in detail for the development team to implement.

Role

UX Design
UI Design

Overview of design mockups for VM Provisioning

Design Systems

Working with developer tools at Booking, I expanded the design system with a library of components to enable any developer to build better tools, faster.

More recently, I have designed tools, guidelines and documentation to scale and improve the design system for all consumer products at Booking.

Daniel and I worked on the Booking.com Design System and its extension to a product development framework.

He is very capable of high level thinking, planning and documenting, with a talent for understanding and operating the impact of systems design on developer experience, and therefore the product. He has contributed greatly to the quality and scale of our systems here at Booking.com
Arda Karacizmeli – Lead Designer

Infra Components documentation and components example

Booking.com

BUI Infra Components

As a team that built internal tools, we quickly realized we were constantly redesigning and rebuilding components between projects.

To increase development speed and scale our efforts, we created BUI Infra Components, a library of React components and documentation to enable any developer to easily build an internal tool.

Working with our front-end developer, I was responsible for designing and coding most of the components, writing and building our documentation site, and validating the library with our users.

This project resulted in better consistency and usability for our internal tools, with infrastructure teams independently creating applications and iterating features using our components!

Role

UX Research
UX Design
UI Design
Front-end Development
Product Management

Onboarding documentation and example application for the library

Component structure and live component examples in the documentation

Fostering adoption for the library included running usability testing for the onboarding flow, release management and providing open sessions for teams

Booking.com

React @ Booking

As we released our BUI Infra component library, it became evident the need to increase adoption of React in Core Infrastructure, since the group was composed mostly of back-end developers and SREs.

To spread knowledge on the community, I created a mini-documentation site named React Basics, to help developers learn the ropes within the context of our library.

To facilitate rapid prototyping and exploration with BUI Infra, I built and deployed a browser-based editor, using the react-live library.

This editor already has all necessary dependencies pre-installed, making it an easy-to-use environment to play with the components!

Role

Front-end Development
Documentation
Community Outreach

The browser editor proved to be a very useful tool for quick sessions of pair-programming and debugging layout issues

Booking.com

Figma Rollout

As senior designer, I was part of the group that rolled out Figma to (many) hundreds of users at Booking, between designers, copywriters, PMs, and developers.

This work included writing documentation, creating FAQs, and interacting with the design community, but also: learning about SSO, debugging RBAC permissions and many support calls with the Figma team.

It was a wild ride, and way outside of the usual realm of responsibilities of a designer, but bringing such a great tool to our community was definitely worth the effort!

Role

Program Management
Documentation
Community Outreach

Payments

I've worked on multiple areas of the payments space, designing for customer interfaces, merchant products, documentation and APIs.

For Booking Payments, I designed a cross-platform rewards system and worked on payment workflows for customers.

For the VTEX commerce platform, I led the team behind a brand-new merchant documentation platform and re-designed order management flows and screens for customers.

Screenshots for My Rewards and VTEX Help

VTEX Commerce

Documentation Platform

The documentation center for the VTEX Commerce platform provides an easy way for merchants and developers to understand and integrate with the platform.

I was product designer and project lead for the new platform, working from initial project pitch and proof of concept, through design, validation and development.

The work on this project gave start to the knowledge team, today a larger team responsible for all the documentation and educational content for the platform.

See a comprehensive case study for this project.

Role

UX Research
UX Design
UI Design
Front-end Development

Old and new versions for Help Center Research summary docs (in portuguese)

Information architecture and content structure

Booking.com

My Rewards

My Rewards is a central hub to consolidate all rewards a customer can get on Booking.com, to better communicate status to customers and streamline the payment workflow.

The project was designed across multiple platforms: web, mobile, iOS, Android and emails. We also added rewards information to the tool used by customer service agents, so they could better resolve reward-related tickets.

Besides design and research, I also worked on the front-end implementation and collaborated with back-end developers on the API spec.

Role

UX Research
UX Design
UI Design
Front-end Development

My Rewards email notification for paid reward

Summary doc for Workshop for Bank Transfer refunds

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Browse more projects and uncover old secrets with the Portfolio Time Machine ↗

Code

I work closely with front-end developers to deliver prototypes in HTML, CSS and Javascript. Understanding architecture and improving development workflows are core parts of my design process.

Every now and then, I experiment with CSS animations, component systems and more. Here's some of the stuff I've worked with: