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Hi, I’m Víctor Hércules

UX engineer + Android dev

Code and UX, from sketch to proof of concept.

See projects → Request CV
photo or illustration?
1 line ✓

Hi, I’m Víctor Hércules

UX engineer and Android developer

Code and UX, from sketch to proof of concept.

See projects Request CV
Illustration of Víctor Hércules working on his laptop
San Salvador, El Salvador
Android · UX since 2020

Experience

01/2025 – present
Android Developer · Unicomer — EMMA

I’m part of the Android team at EMMA, a FinTech platform that offers 100% digital credit to customers of Unicomer brands in Costa Rica, Ecuador and El Salvador.

KotlinFinTech
02/2022 – 01/2025
Front-end Developer | UX Designer · Garage Works

I built reusable Shopify components for Reflexa, the e-commerce platform operating in Guatemala and Trinidad and Tobago.

ShopifyLiquid
11/2021 – 01/2022
UX Research · Unicomer × VISA

Part of the design team that restructured EMMA’s onboarding flow together with VISA’s team.

• check onboarding metrics
merge with Yellow Pepper?
01/2020 – 11/2022
Android Developer | UX Lead · Yellow Pepper

I built the EMMA app for Costa Rica, Trinidad and Tobago, Ecuador and Jamaica, and led the UX team in designing and shipping new features.

order: most recent first ✓

Experience

01/2025 – present CURRENT

Android Developer

Unicomer — EMMA

I’m part of the Android team at EMMA, a FinTech platform that offers 100% digital credit to customers of Unicomer brands in Costa Rica, Ecuador and El Salvador.

Kotlin Android Studio FinTech
02/2022 – 01/2025

Front-end Developer | UX Designer

Unicomer — Garage Works

I built reusable Shopify components for Reflexa, the e-commerce platform operating in Guatemala and Trinidad and Tobago.

Shopify Liquid JavaScript
11/2021 – 01/2022

UX Research

Unicomer × VISA

Part of the design team that restructured EMMA’s onboarding flow together with VISA’s team.

01/2020 – 11/2022

Android Developer | UX Lead

Unicomer — Yellow Pepper

I built the EMMA app for Costa Rica, Trinidad and Tobago, Ecuador and Jamaica, and led the UX team in designing and shipping new features.

Portfolio Projects

DESIGN CHALLENGE · Dec 2024
Dashboard redesign
5-day hiring challenge

Replicate a dashboard with Atomic Design, then make it better: accessibility, IA and a new screen.

see the challenge →
solution: coming soon!
CASE STUDY · Nov 2022 – Oct 2023
Akasa
Shipment tracking app

Shipment tracking for small logistics businesses, from idea to prototype.

interviewsusability
see case study →
← star case (Google UX cert.)
Reflexa e-commerce
UX Engineer · since 2022

Eyewear e-commerce. Reusable Shopify and Liquid components for Guatemala and Trinidad and Tobago.

see case →
EMMA app
Android dev / UX Designer · 2020 – 2022

100% digital credit for Unicomer customers. Android development and UX leadership in four countries.

see case →
EMMA Presta
UX Research · Feb – Apr 2021

User research for EMMA’s loan product: interviews, usability tests and findings for the team.

see case → screenshots? ask permission

Projects

DESIGN CHALLENGE · DEC 2024 Designed before the AI era

Dashboard redesign

5-day hiring challenge · Product Designer

Replicate a dashboard with Atomic Design, then make it better: accessibility, IA and a new screen.

Atomic Design Information architecture Accessibility
CASE STUDY · NOV 2022 — OCT 2023 Designed before the AI era

Akasa

Shipment tracking app · UX Designer

Shipment tracking for small logistics businesses, from idea to prototype.

Interviews Usability studies Accessibility

Reflexa e-commerce

UX Engineer · since 2022 Developed before the AI era

Eyewear e-commerce. Reusable Shopify and Liquid components for Guatemala and Trinidad and Tobago.

See case

EMMA app

Android dev / UX Designer · 2020 — 2022 Designed and developed before the AI era

100% digital credit for Unicomer customers. Android development and UX leadership in four countries.

See case

EMMA Presta

UX Research · Feb — Apr 2021 Designed before the AI era

User research for EMMA’s loan product: interviews, usability tests and findings for the team.

See case

My career so far
Between code and design

Systems Engineer between development and design. Usability always comes first.

1 paragraph ✓

Skills

UX design
User researchPersonasPrototypingUITestingAnalytics
Programming languages
KotlinHTMLCSSJavaScriptLiquidPython
Tools
Android StudioFigmaGitWebflowJiraPhotoshopMiroAdobe XDShopifyGCPClaude CodeClaude DesignMCPFirebaseloading… the list keeps growing
🎓 → icon · Systems Eng., UES
📍 → icon · San Salvador
no emoji in the final!

Education

Computer Systems Eng.
UES · 2024
Google UX Design
Coursera · 2023
Platzi courses
Languages: ES ●●●●● / EN ●●●●○
skill-level bars? NO

Between code and design

Systems Engineer between development and design. Usability always comes first.

Skills

Tap a skill marked with to see where I used it.

UX design
Analytics: Google Analytics, Clarity, Hotjar
Programming languages
Python
Tools
Figma Git Webflow Jira · Confluence Miro Photoshop · Illustrator GCP Adobe XD Claude Code Claude Design MCP Firebase Loading… the list keeps growing
Systems Engineering, UES
San Salvador, El Salvador

Education

Computer Systems Engineering
University of El Salvador · 2024
Google UX Design
Coursera · certificate · 2023
Courses on Platzi
Ongoing learning

Languages

Spanish · native English · B2

Contact me Let’s talk

Got an idea? Write to me.

✉ Send an email LinkedIn Instagram GitHub
form? → no, email only
© 2026 Víctor Hércules

Let’s talk

Got an idea? Write to me.

Send an email LinkedIn Instagram GitHub
© 2026 Víctor Hércules
FINAL
sketch

This project and its documentation are private, and I have to respect certain confidentiality levels. If you’d like more general details, we can talk about them.

Ask me about this project