All Upwork engagements

Apr 16, 2019 to Feb 1, 2020

Web & product / Client work

Code the next engineer can build on.

I developed maintainable React code for Slicify and gave the team direct feedback on product ideas.

Maintainable React

Product feedback

Team continuity

THE TECHNOLOGY

React

INTERFACES / APPLICATION STATE

My role

React application developer

Client perspective

Upwork client, 4.9/5

“His methodical approach to writing code resulted in a easily maintainable code”
Read the work history on Upwork · Checked Sep 20, 2026

01 / THE CONTEXT

The challenge.

The Slicify team needed application development it could continue using and maintaining after the engagement.

02 / MY CONTRIBUTION

Code the company could continue to use

I developed React application code and gave direct feedback on product ideas. The client described the resulting code as easy to maintain and useful as a continuing company asset.

03 / THE ENGINEERING

Technology & trade-offs.

01

Interface

React

Technology map: recorded tools grouped by responsibility.

My engineering perspective: what each approach helps solve, and what needs care.

React: leave code the team can continue using

I developed React code the client described as easy to maintain. Readable components and clear responsibilities help a team understand a feature after the original author leaves.

The trade-off: Clever abstractions can make a small change harder to follow. I favor clarity around the work the component actually does.

Product feedback: connect implementation to the idea

I gave the team direct feedback on product ideas alongside the development work. Technical judgment includes explaining how a feature affects usability, scope, and future changes.

The trade-off: Feedback is most useful when it makes a decision clearer and leaves product priorities with the client.

Contract details and sources

Slicify application development

Contract period
Apr 16, 2019 to Feb 1, 2020
Upwork status
Completed contract · Checked Sep 20, 2026
Work delivery
Delivery date not recorded.
Product today
Current availability not verified
Upwork work history

Your next project

Bring me the hard part.
Let’s work out what’s next.

A new product, a stalled release, or a system that needs a stronger foundation. Tell me where you are and where you want to go.

Let’s talk about your project

Xavier Perez