Principal Mobile Engineer

www.ninety.io  |  Remote

At Ninety, we help people build extraordinarily productive, humane, and resilient organizations. 

Ninety is an innovative learning, support, and technology SaaS platform that simplifies the hard work of creating focused, aligned, and thriving teams. Our integrated collection of time-tested business building and awareness tools, along with industry-leading educational materials, not only simplifies the hard work associated with building great organizations but also organizes, stores, and makes all the associated information easily accessible.

We believe work shouldn’t suck, and for 200,000 users and counting, it doesn’t. 

As Ninety continues to experience exceptional growth, we are looking to bring on a Principal Engineer who will lead the development of our products and who will report to an Engineering Lead.

As a Principal Engineer, you will be a strategic technical leader responsible for shaping the architecture and long-term vision of our SaaS operations and distributed systems. You will drive critical projects, influence engineering culture, and ensure the delivery of robust and scalable software solutions on a daily basis.

To be successful in this role, you must have:

• Growth mindset.
• Strong balance between perfection and pragmatism.
• Team based orientation.

Your Key Responsibilities:

• Define and drive the technical strategy and architecture for SaaS operations and distributed systems.
• Lead the development and implementation of innovative solutions to complex technical challenges.
• Collaborate with senior leadership to align technical initiatives with business goals.
• Mentor and coach engineering teams to foster a culture of excellence and continuous improvement.
• Conduct high-level code and architecture reviews to ensure adherence to best practices.
• Stay abreast of emerging technologies and industry trends to inform strategic decisions.

What Success Looks Like:

• Deliver market-aligned outcomes.
• Build testable, observable, and independently deployable code.

Preferred Qualifications:

• Bachelor's or Master's degree in Computer Science, Engineering, or a related field.
• 8+ years of experience in software development, with extensive experience in SaaS operations and distributed systems.
• Deep expertise in designing and building scalable, distributed systems.
• Proven leadership skills with the ability to influence and drive technical direction.
• Strong proficiency in multiple programming languages and cloud platforms.
• Exceptional problem-solving skills and strategic thinking
• Proven track record of delivering high quality cross-platform mobile applications to both the Apple App store and Google Play store 
• Deep knowledge of at least one cross-platform framework such as React Native, Ionic, PhoneGap/Cordova or Flutter
• Strong native development expertise in both Android (Kotlin/Java) and iOS (Swift/Objective-C).
• Strong debugging skills and deep understanding of mobile performance profiling tools

Ninety’s mission to help organizations focus, align, and thrive extends to how we support our own team. We believe that when our people flourish, our clients do too. That’s why we focus on attracting, developing, and retaining great people, and giving them the trust, flexibility, and support to do their best work.

Flexibility & Time Off

• Work From Anywhere: Live and Work where you’re happiest.
   
• As-Needed Vacation: Recharge when you need to.
   
• Paid Parental Leave: Generous paid time to bond with your growing family.
   

Health & Well-Being

• Comprehensive Coverage: Health, dental, and vision insurance for you and your family.
   
• Company-Paid Life & LTD: Peace of mind for you and your loved ones.
   
• HSA, FSA & DCFSA Accounts: Flexible ways to manage medical and dependent care costs. Ninety contributes annually to your HSA—front-loaded to help you cover expenses sooner.
   
• Monthly Stipend: Use toward wellness, tech, or productivity—whatever helps you thrive.
   

Financial Security

• 401(k) with Company Match: Plan for your future with automatic company contributions.
   
• Equity Opportunities: Share in Ninety’s long-term growth and success.
   

Growth & Connection

• Professional Development Stipend: Annual funds to support your learning and growth.
   
• Company Gatherings: In-person connection and collaboration, with travel covered.

Why we love doing what we do: Small to midsize businesses are the foundation of almost every healthy community. They provide not just employment but opportunities for people to learn, grow, and become leaders who take responsibility for the well-being of the community. 

Our values: 

Get Smart Stuff Done
Focus on outcomes that matter and consistently deliver results.

Team
Collaborate, trust, support, create, and honor your agreements.

Resilient
Respond calmly to challenges and grow through adversity.

Inquisitive
Seek mastery, ask questions, and never stop learning.

Best
Strive to be a better version of yourself for your growth, your team, and Ninety.

Extra Mile
Embrace work-life harmony while stepping up when it matters most.

The “Seat” we have open

Once we’re confident someone embodies our core values and is in the right seat, we trust them to do great work, lean into their Unique Abilities™, and continue to grow.

If this sounds like the kind of environment where you’d thrive, we’d love to hear from you and explore how you can help us help companies achieve real, healthy, and sustainable growth.