Frank Sera

Principal Design Engineer · Techiegeeks

Miami, Florida · Remote

Owned design and engineering for the agency's platform and its mobile app. On Fingenius AI, which builds apps from a conversation, I worked from the AWS services up to the interface and built tools for its Bedrock agent.

— Stack migration from Capacitor + Angular to React Native + Expo + Supabase

— Designed and implemented multi-tenant architecture for international clients

Principal Design Engineer · Inmigreat

Miami, Florida · Remote

Led product design for two years and, in the final nine months, took my own screens to production. Defined the real-time immigration case tracking system —today over a million users and 4.8 on the App Store— and the product's design language.

— Designed a real-time immigration case tracking system

— Built a scalable design system for the product

— ~2 years total: Principal Product Designer leading product design

— Final ~9 months as UI Developer shipping my own designs in code

Design Engineer · NTL Biotech and NTL Laboratory

Chicago, Illinois · Remote

Owned the digital products of both companies in the group. Worked alongside researchers and lab staff to bring scientific procedures into interfaces that respect their method instead of flattening it.

— Designed digital products for biotech sector

— Applied UX research methodologies in scientific context

UI Designer · CSQ Non Stop Shops

Madrid, Spain · Remote

Designed the company's phone top-up application end to end: information architecture, user flows, prototypes and the final interface.

— Designed "Recharge Phones" mobile app (phone top-ups)

— Created wireframes, prototypes, and high-fidelity designs

UI Designer · OutBoss

Granada, Spain · Remote

Covered the studio's client roster end to end: brand identity, mobile app interfaces and animation, from brief to delivery.

— Designed brand identities and mobile applications

— Animation and branding for diverse clients

Design Engineer · The White Labels

White-label fintech platform

Leading the transformation of a white-label financial platform: wallet, international remittances, top-ups and loyalty, ready to operate under each client's brand.

— Led the technology transformation of a white-label fintech platform

— Features: wallet, international remittances, top-ups, push notifications and gamification

Design Engineer · Ulula SaaS

Hospitality SaaS platform

I design and build the entire product: orders, bookings, events and delivery for hospitality, with four payment providers, verifiable invoicing under Spanish tax regulation and a conversational assistant for the end customer.

— Integrated 4 payment providers (Stripe, Redsys, PayPal, Square)

— Implemented VeriFactu verifiable invoicing (Spanish e-invoicing)

— Built an AI conversational chatbot and multi-agent flows with LangGraph

— All-in-one hospitality platform: orders, bookings, events and delivery

— Stack: Next.js, React Native, TypeScript, Supabase, Vercel AI SDK

Master's in Audiovisual Communication and Education — AI Research

Universidad Internacional de Andalucía (UNIA)

Spain

Bachelor's in Visual Communication Design

Universidad de La Habana / ISDi

Cuba

ONDi Award

Visual Identity

Memoria Nuestra Young Researchers Award

Research and editorial