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Full Stack Engineer (Mobile-first)

Sierra Studio

Teletrabalho

BRL 331.000 - 497.000

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Resumo da oferta

A tech-driven startup is looking for a Full-Stack Mobile Engineer to enhance their mobile app. You will develop user-friendly features from scratch and handle backend adjustments as required. This remote position offers a salary range of $60,000 - $90,000 annually, alongside benefits like four weeks of PTO and equity packages as the company grows from pre-seed to seed stage.

Serviços

Four weeks PTO per year

Fully remote position

Equity packages available

Qualificações

4+ years building production applications.
Experience with mobile development (React Native preferred).
Strong TypeScript/JavaScript proficiency.
Familiarity with Node.js backend for API integration.
Experience with app store deployments (TestFlight, Google Play).

Responsabilidades

Build and improve mobile app features.
Own features end-to-end, including backend API changes.
Implement responsive designs for various device sizes.
Monitor and optimize transaction attribution system.

Conhecimentos

Production application development

Mobile development (React Native)

TypeScript/JavaScript proficiency

Deep linking implementation

Third-party API integration experience

Node.js familiarity

App store deployment experience

Ferramentas

React Native

PostgreSQL

Git/GitHub

AWS

About Sierra Studio

When you apply to Sierra, you join an ecosystem. We specialize in connecting talented Brazilian professionals with exciting career opportunities in a highly-vetted small community of growing companies in the US. Applying to Sierra seamlessly integrates you into this ecosystem, granting automatic eligibility for all relevant opportunities we offer.

About Our Hiring Partner

Our hiring partner is building attribution infrastructure for creator commerce. Creators lose billions annually because 80% of purchases happen offline where traditional tracking fails, browser extensions hijack affiliate links (see: Honey lawsuits), and cross-device journeys break cookie-based attribution.

They use card-linking technology (Plaid/Fidel) to track actual purchase behavior. When a creator's fan links their card once, they attribute every purchase they make - online, offline, across all devices - enabling creators to earn from lifetime customer value instead of just last-click conversions.

Location: Remote

Type: Full-time Contract

Stage: Pre-seed, MVP in development

The Role

Our hiring partner is looking for a Full-Stack Mobile Engineer to help grow and evolve their mobile app. You'll focus primarily on building delightful user experiences while having the flexibility to make backend changes when needed. This is a frontend-leaning full-stack role where you'll own features end-to-end—from UI to API.

You’ll build and maintain their mobile applications (React Native) and integrate third-party platforms that power creator rewards. You’ll also monitor and optimize their transaction attribution system to ensure accurate, reliable processing at scale.

What You’ll Do

Mobile Applications (Primary Focus):

Build and improve mobile app features – Create polished, performant UI components and screens that users love from scratch
Own features end-to-end – Take a feature from design to shipped, including any necessary API changes
Extend backend APIs – Add endpoints or modify existing ones to support new mobile features
Write tests – Maintain code quality with unit and integration tests
Implement responsive designs – Build interfaces that work beautifully across all device sizes
Collaborate with design – Work closely with designers to bring mockups to life with attention to detail
Deep linking – from social platforms (Instagram, TikTok) → app → offer activation
Push notifications – for reward milestones and transaction updates
Authentication flows – with biometric support
Offline-first architecture with sync
Mobile-optimized reward discovery and redemption flows
App store deployment (TestFlight, Google Play)

Third-Party Integrations:

Discord (role-based rewards, community access)
Patreon (membership tier verification)
Whop (digital product access)
Event platforms: Posh, Luma, Eventbrite (ticketing, reservations)
Social APIs: Instagram, TikTok, YouTube (follower verification, analytics)
OAuth flows, webhook handlers, retry logic, rate limiting

Bonus - Transaction Attribution Monitoring:

Monitor Plaid webhook processing and attribution accuracy
Debug edge cases: refunds, duplicate transactions, merchant mismatches
Optimize real-time reward progress updates
Maintain fraud detection patterns
Improve attribution logic based on production data

Required Skills

Must-Haves:

4+ years building production applications
Mobile development experience (React Native/Expo preferred OR native iOS/Android)
Strong TypeScript/JavaScript proficiency
Experience with deep linking (Universal Links, App Links, deferred deep links)
Third-party API integration experience (OAuth, webhooks, REST)
App store deployment experience (TestFlight, Google Play)
Node.js backend familiarity (for API integration work)
Understanding of mobile-specific patterns (push notifications, offline sync, secure storage)

Nice-to-Haves: