Frank Sera

Full-stack design engineer. I cover the whole thing: design, front end and backend. Since 2017 I have taken products from research to maintenance — inside product teams and on platforms I built from scratch. I believe in quiet interfaces, in software that lasts, and in writing the code I sign.

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Experience

2025 — 2026

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.

2023 — 2025

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.

2023 — 2024

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.

2021 — 2022

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.

2020 — 2021

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.

Projects

2025 — Now

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.

2022 — Now

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.