Senior Mobile Engineer
SAN FRANCISCO /ENGINEERING /FULL-TIME

Founded in 2007, Lumos Labs is the leader in brain training. Over 100 million users have used our Lumosity application to train their cognitive skills, playing our games over 6 billion times. We are now applying our unique approach to building scientifically-validated, delightfully fun, and deeply engaging products to other aspects of brain health and wellness. We are incubating multiple “seed-stage startups” within the company, in areas like creativity, mindfulness, emotional intelligence, and more. We are building one of the premier digital health brands and are looking for talented, mission-oriented people to join us on the journey.

Lumos is looking for a Senior Mobile Engineer to work on our flagship Lumosity brain-training product, on both iOS and Android platforms. You are a curious and motivated mobile engineer that wants to solve challenging problems of usability, scale, and developer productivity. You have the ability to learn new technology stacks and identify areas to improve the end user’s experience.

YOU WANT

• A high-impact environment where you consistently ship features that benefit our customers
• To work closely and collaboratively in a multi-functional team that includes Product Managers, Designers, and Developers
• To improve yourself as an engineer
• To help teammates learn and grow

YOU WILL

• Build features that benefit our customers on both iOS and Android platforms using Objective-C, Swift, Java and Kotlin
• Work collaboratively with colleagues to specify high impact features (folks from Product, Marketing, User Experience, Design, and more)
• Design, build, and maintain performant, reusable, scalable, and reliable code
• Identify and correct performance bottlenecks and fix bugs
• Contribute to efforts to maintain code quality
• Work with your engineering team to help ensure quality with every release
• Break down work into manageable pieces and recommend ways to parallelize the implementation effort
• Behave as a technical resource for parts of the code you are familiar with
• Offer input into team process discussions
• Proactively help teammates when needed
• Mentor other engineers on the team

YOU HAVE

• Experience developing applications on Android and iOS in Objective-C, Swift, Java and/or Kotlin
• The ability to build relatively complex Mobile features because you’ve been doing it for quite a while (think custom components, multithreading, object oriented programming, and architecture patterns like MVP or MVVM)
• The desire to collaborate with others in the company to help define what we need to build and how we will build it
• An understanding of the use of code versioning systems
• The desire to mentor teammates to raise the level of the whole team
• A mindset that we can only accomplish our goals together
• Comfort around developing software that needs to run on many different screen sizes and densities

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