Mobile Tech Lead (LATAM)

X-Team International; United States; Remote; USD 124,000 - 179,000; Full time

Job summary

X-Team International is hiring a Senior React Native contractor to lead the architecture and delivery of a new mobile app for a major festival. You will own the app’s architecture, authentication flows, offline capabilities, and release pipeline, working closely with the client team to meet a fixed launch date.

You bring hands-on iOS/Android native development, experience with high-traffic production apps, and a track record of defining engineering standards and guiding client stakeholders

Qualifications

• Senior-level experience building and maintaining high-traffic React Native apps.
• Hands-on native iOS and Android development with Swift/Obj-C and Kotlin/Java.
• End-to-end ownership of mobile releases including CI/CD and app store processes.
• Experience implementing SSO via OAuth 2.0 and SAML.
• Experience integrating push notifications such as Airship and maps.
• Architect mobile apps for high traffic with offline caching and state management.

Responsibilities

• Lead architecture and delivery of a large React Native app for a major festival.
• Review code, set engineering standards, and advise client stakeholders.
• Ensure scalability, performance, and reliability during high-traffic events.
• Collaborate with client teams and manage risks to meet fixed deadlines.

Skills

React Native

iOS development

Android development

CI/CD

OAuth 2.0

SAML

Push notifications

Offline caching

Code signing

Architecture

Tools

Airship

Google Maps SDK

Universal Links

App Links

Job description

Join a team spread across the world and enjoy true location freedom while collaborating with talented engineers everywhere.

Work with top brands

Riot Games, Fox, Coinbase, Epic Games, and so much more.

Gamified community you’ll love

Engage in online events, compete in challenges, and attend Outposts and summits that bring X-Teamers together learning, connecting, and leveling up globally.

Enjoy flexible schedules, wellness stipends, and support to make sure you’re thriving both professionally and personally.

About the Role

This is a contractor role through X-Team. You’ll lead the technical architecture and delivery of a new iOS and Android app for one of the world’s largest annual festivals of music, film, and technology. The custom React Native app replaces a white-label vendor solution and needs to deliver a reliable, seamless experience for attendees at scale.

You’ll own the app’s architecture, authentication and badge-linking flows, offline capabilities, and release pipeline. Working closely with the client’s team, you’ll set engineering standards, review code, and identify API, data, and integration gaps before they become blockers.

The launch date doesn’t move. The festival starts when it starts. The app must clear both app stores, handle massive traffic spikes when reservations open, and remain reliable even when thousands of attendees are navigating poor event connectivity.

Most Important

Senior-level experience building and maintaining high-traffic React Native applications in production.

Hands-on native iOS and Android development, including custom native modules and platform-specific code in Swift/Objective-C and Kotlin/Java.

End-to-end ownership of mobile releases, including CI/CD configuration, code signing, and shipping applications through Apple App Store and Google Play reviews.

Direct experience implementing SSO and account or badge-linking flows using OAuth 2.0 and SAML.

Production experience integrating push notification services such as Airship, Google Maps SDK, Universal Links on iOS, and App Links on Android.

Proven ability to architect mobile apps for high traffic and unreliable connectivity, including offline caching and state management.

Technical leadership experience defining engineering standards, reviewing code, and advising client stakeholders.

Strong communication skills, with the ability to identify and elevate API, data, and integration gaps early.

Nice to Have

Hands-on experience building accessible mobile interfaces compliant with WCAG 2.1 AA standards.

Experience developing high-traffic consumer applications in event management, ticketing, entertainment, or live media.

Experience replacing a white-label mobile solution with a custom-built application.

You take ownership of technical decisions and can explain the trade-offs clearly to both engineers and non-technical stakeholders.

You anticipate risks around integrations, authentication, performance, and app store approvals rather than waiting for them to become blockers.

You design for real-world conditions, balancing performance, reliability, and the attendee experience when connectivity is unreliable and traffic spikes unexpectedly.

You set clear engineering standards while collaborating with existing teams, making pragmatic decisions that keep the project moving toward launch.

You’re comfortable being the primary technical point of contact, raising concerns early, and helping the client make informed decisions under a fixed deadline.

Our Hiring Process

May change based on various factors (role, profile completeness, etc).

1

Initial Interview

Our recruitment team will review your application and contact you if they'd like to proceed with an initial interview.

Duration: ~ 1 week

2

Skills Assessment

After a successful initial interview, the next step will be an assessment of your technical skills in order to build an 'X-Profile' that we can share with the relevant partner.

Duration: ~ 1 week

3

Interview with Our Partner

We'll schedule an interview for you to meet our partner, during which you'll get to know more details about the specific role you have been matched with.

Duration: ~ 1 week

FAQ

X-Team is committed to providing the ultimate work experience for engineers.

Do you provide paid vacation?

X-Team doesn’t offer paid vacation time, but can arrange for vacation time. We encourage you to incorporate vacation time, health insurance, etc... into your hourly rate.

Will I be working full-time or part-time hours?

At X-Team, we only hire people who can fully dedicate themselves to a project. That means a standard 40 hours per week, Monday through Friday.

Do I need to take care of my own taxes?

Yes. Because we hire you as a full-time contractor, you’ll need to take care of your own taxes. If this is your first time doing so, we recommend you get the advice of a qualified tax advisor to understand the requirements of your country.