Senior Mobile App EngineerSKIMS • Los Angeles, California, US

Senior Mobile App Engineer

SKIMS • Los Angeles, California, US

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Description

SKIMS is a solutions-oriented brand creating the next generation of underwear, loungewear, shapewear, and essentials. We are setting new standards by delivering technically innovative, comfort-driven products with elevated design for everybody.

At the intersection of culture, innovation, and commerce, SKIMS is a global brand redefining modern apparel. Our teams are built on creativity, collaboration, and operational excellence, and we are committed to fostering an inclusive, high-performance environment where ambitious, curious, and values-driven individuals can do the best work of their careers.

As we continue to scale globally, our HQ teams play a critical role in shaping strategy, building world-class infrastructure, and driving sustainable growth across markets.

We are seeking an experienced Senior Mobile App Engineer to help build, scale, and continuously evolve the SKIMS DTC mobile application. In this role, you will contribute to a production-grade Flutter application supporting a rapidly growing global fashion brand, delivering high-impact features across shopping, personalization, loyalty, and seamless checkout experiences.

The ideal candidate brings deep expertise in Flutter, strong command of clean architecture and scalable mobile patterns, and a passion for crafting performant, intuitive, and conversion-driven mobile commerce experiences. You thrive in fast-paced environments, take ownership of technical quality, and are motivated by building products used by millions of customers worldwide.

Key Responsibilities

Required :

5+ years professional software engineering with 3+ years Flutter / Dart development
Shipped production Flutter apps to App Store and Play Store at scale
Expert-level Flutter and Dart with strong null safety practices

BLoC pattern (flutter_bloc) and clean architecture (domain / data / presentation layers)

Code generation tools : Freezed , JSON Serializable , Retrofit , Injectable / GetIt

Local storage solutions : ObjectBox , Hive, or similar embedded databases

Dio networking with RESTful API integrations and error handling

Comprehensive testing : unit, widget, BLoC tests with mocktail / bloc_test

E-commerce experience : shopping cart, checkout, product catalogs, user authentication

Preferred :

Firebase ecosystem : Analytics, Crashlytics, Remote Config, Cloud Messaging

Multi-platform analytics (Braze, Sentry, Google Analytics, QuantumMetrics)

Shopify API or headless commerce platform experience

Marketing automation (Klaviyo, Braze) and push notification implementation

CI / CD with GitHub Actions

Platform channels with native iOS (Swift) and Android (Kotlin)a

FVM , l10n / i18n with flutter_intl, accessibility standards

Skills, Knowledge and Expertise

Design and develop high-quality Flutter features following BLoC pattern and clean architecture

Build complex, performant UIs with pixel-perfect design implementation and smooth animations

Integrate third-party services : Shopify APIs, payment gateways, analytics platforms, CMS

Implement repository pattern with abstract interfaces and domain models

Write comprehensive unit, widget, and integration tests (80%+ coverage target)

Optimize app performance, memory usage, and crash-free rates

Conduct code reviews and mentor junior developers on Flutter best practices

Manage CI / CD pipelines and coordinate app releases

Collaborate with product, design, and backend teams on feature planning and technical decisions

Monitor production metrics via Crashlytics / Sentry and proactively resolve issues

What We're Looking For

Technical Excellence :

Deep understanding of Flutter internals, widget lifecycle, and performance optimization

Expertise in complex state management with BLoC and reactive programming (RxDart, Streams)

Strong architectural decision-making balancing scalability, maintainability, and performance

Proficiency with code generation workflows and dependency injection patterns

Experience debugging across Dart, Flutter framework, and native platform layers

E-Commerce & Product Mindset :

Understanding of mobile commerce user journeys and conversion optimization

Experience with high-traffic consumer applications

Customer-centric approach with data-driven decision making

Familiarity with payment flows, loyalty programs, and personalization

Collaboration & Leadership :

Excellent communication skills with technical and non-technical stakeholders

Ownership mentality - driving features from design through production

Proven mentorship capabilities and knowledge sharing

Team-first attitude with positive, collaborative approach

Comfortable with ambiguity and defining technical requirements

Why Join Us

Build a high-visibility consumer app used by millions in a premier fashion brand

Shape technical architecture and engineering culture of a rapidly scaling platform

Work with world-class design, product, and engineering teams

Solve challenging problems in mobile commerce, personalization, and performance

Continuous learning with cutting-edge Flutter technologies and best practices

Competitive compensation with equity, flexible / remote-friendly environment

Benefits, Culture and Perks

Benefits and Culture

Up to 100% Company Paid Healthcare (medical, dental, vision)

Kind Body Fertility Benefits

401(k) savings plan with up to 4% match

Unlimited PTO

Full Access to LinkedIn learning

Employee Discounts

Perks (HQ Location)

Free weekly catered lunch at HQ – M / T / W / Th

Dog-Friendly office on a Thursday and Friday

Free Swag Giveaways

Annual Holiday Party

Annual Summer Party

Invitations to pop-ups and other company events

Complimentary daily office snacks and beverages

SKIMS is a solutions-oriented brand creating the next generation of underwear, loungewear and shapewear.

We are setting new standards by providing solutions for every body. From technically constructed shapewear that enhances your curves to underwear that stretches to twice its size, our goal is to consistently innovate on the past and advance our industry for the future.

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