Welcome to my site

Hi, I’m Víctor Hércules

UX engineer + Android dev

I like building useful things with code and good UX practices. I specialize in tech innovation and proofs of concept, I’m self-taught and a crypto enthusiast, based in San Salvador.

See projects → Request CV

photo or illustration?

text too long → 3 lines max!

Computer Systems Engineer

Hi, I’m Víctor Hércules

UX engineer and Android developer

I like building useful things with code and good UX practices. I specialize in tech innovation and proofs of concept, I’m self-taught and a crypto enthusiast, based in San Salvador.

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

After the pandemic, many online businesses lacked a tool to ship, track and receive their packages. I designed Akasa from idea to delivery for small logistics companies, as the hands-on project of the Google UX Design certificate.

interviewspersonaswireframesusability

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

A challenge for a Junior Product Designer role: replicate a dashboard in Figma with Atomic Design, then improve its accessibility, define its information architecture and design a new screen.

Atomic Design Auto Layout and Variants Information architecture Prototyping UI kit Accessibility

See the challenge

CASE STUDY · NOV 2022 — OCT 2023 Designed before the AI era

Akasa

Shipment tracking app · UX Designer

Interviews Personas Paper and digital wireframes Low- and high-fidelity prototypes Usability studies Accessibility

See case study

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

I’m a Computer Systems Engineer from the University of El Salvador, and I move comfortably between development and design. As a developer I switch from one language to another, always looking to optimize; as a UX designer I focus on intuitive, people-centered interfaces.

I never stop learning. At every step I put usability first, so the people using the product enjoy it.

trim → 2 paragraphs max.

Skills

UX design

User researchPersonasPrototypingUITestingAnalytics

Programming languages

KotlinHTMLCSSJavaScriptLiquidPython

Tools

Android StudioFigmaGitWebflowJiraPhotoshopMiroAdobe XDShopifyGCPClaude CodeClaude DesignMCPFirebaseloading… the list keeps growing

Focus

ScrumPoC

Soft

CommunicationTeamData → decisionsEmpathyAlways learningAdaptability

🎓 → 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

I never stop learning. At every step I put usability first, so the people using the product enjoy it.

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

Focus

Scrum Proofs of concept

Soft skills

Effective communication Teamwork Data-driven decisions Empathy Continuous learning Adaptability Problem solving

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

How I work

Understand

I listen to users and the business before opening any tool.

Sketch it out

Quick wireframes on paper or in Figma, so mistakes stay cheap.

Prove the concept

A working proof of concept validates the idea before investing more.

Build and polish

Kotlin or web code, with a design system that keeps everything consistent.

← exactly what this slider does

How I work

Understand

I listen to users and the business before opening any tool.

Sketch it out

Quick wireframes on paper or in Figma, so mistakes stay cheap.

Prove the concept

A working proof of concept validates the idea before investing more.

Build and polish

Kotlin or web code, with a design system that keeps everything consistent.

Contact me Let’s talk

If you have an idea that needs a proof of concept, an Android app or a hand with UX, write to me.

✉ Send an email LinkedIn Instagram GitHub

form? → no, email only

Let’s talk

If you have an idea that needs a proof of concept, an Android app or a hand with UX, write to me.

Send an email LinkedIn Instagram GitHub

FINAL

sketch

Hi, I’m Víctor Hércules

Hi, I’m Víctor Hércules

Experience

Experience

Android Developer

Front-end Developer | UX Designer

UX Research

Android Developer | UX Lead

Portfolio Projects

Projects

Dashboard redesign

Akasa

Reflexa e-commerce

EMMA app

EMMA Presta

My career so farBetween code and design

Skills

Education

Between code and design

Skills

Education

Languages

How I work

How I work

Understand

Sketch it out

Prove the concept

Build and polish

Contact me Let’s talk

Let’s talk

My career so far
Between code and design