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Careers

Work that keeps
families close.

Zintrox is a family safety platform from Miami, Florida. We’re looking for people who care about craft, privacy and the families we build for.

See open rolesAbout Zintrox

What we value

Five values.
One promise to families.

Everything we build helps a family know their people are okay. These values guide how we get there.

Purpose. Every feature has to earn its place by making a family’s day calmer.

Family. We build for families like our own, and treat every one of them that way.

Innovation. New technology only when it makes protection simpler.

Human technology. Technology that feels human and respects everyone in the family.

Excellence in detail. The details nobody notices earn a family’s trust.

Open roles

Find your place
on the team.

Three roles, open now. Full-time or contractor. Apply below with your CV and cover letter.

Engineering

Senior Full-Stack Engineer

Hybrid · Miami, FloridaFull-time or contractorOwn features end to end, from the Flutter app to the NestJS API on AWS that keeps families connected.

What you’ll do

  • Build and ship features across the Zintrox app (Flutter) and its API (NestJS).
  • Work on real-time location, arrival alerts, SOS and push notifications.
  • Keep the platform secure, reliable and private by design.
  • Help shape our architecture and engineering standards.

What you’ll bring

  • Senior experience shipping production mobile and backend software.
  • Strong skills in Flutter and Dart, and in Node.js with TypeScript.
  • Experience with AWS, PostgreSQL and Firebase.
  • Care for privacy, security and clean architecture.
Apply for this roleView role page →
Design

Senior Product Designer

Remote · US and Latin AmericaFull-time or contractorDesign the Zintrox experience in Figma, from the first family invite to the moment someone needs help.

What you’ll do

  • Design flows and interfaces for the Zintrox app, for parents and for kids.
  • Evolve and maintain our design system in Figma.
  • Prototype, test and refine ideas with real families.
  • Work side by side with engineering until every detail ships right.

What you’ll bring

  • Senior experience designing mobile products, and a portfolio that shows it.
  • Mastery of Figma: components, variables, auto layout and prototyping.
  • A sharp eye for typography, motion and detail.
  • Empathy for families and respect for their privacy.
Apply for this roleView role page →
Marketing

Head of Growth

Remote · US and Latin AmericaFull-time or contractorLead how families discover Zintrox in the United States and Latin America, from launch onward.

What you’ll do

  • Build and lead our growth strategy across channels, in English and Spanish.
  • Launch the Zintrox app and grow our community of families.
  • Own our positioning, messaging and brand consistency.
  • Measure what works, and scale it.

What you’ll bring

  • Senior marketing leadership, ideally in consumer apps or startups.
  • Hands-on experience with paid, organic and lifecycle marketing.
  • A data-driven, creative and practical approach.
  • Fluency in English and Spanish is a strong plus.
Apply for this roleView role page →
StudentsStill studying?
Intern with us this summer.Paid 12-week internships in engineering, design, growth and data. Summer 2027.Explore internships →

Apply

Tell us
about you.

Choose a role and send your CV and cover letter. We read every application.

Questions about a role? · careers@zintrox.com

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Important information: Location and alert functionality depends on device, connectivity, signal, battery and other conditions. Zintrox does not replace emergency services or adult supervision. Learn more

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Miami, Florida