Senior Principal Software Engineer

GrowthDay is the world’s leading membership for personal growth and success. We empower people in 100+ countries to become happier and higher performing in every area of their lives. Our proprietary self-improvement tools, live classes, virtual coaching, famous seminars, online courses, pioneering research, social media initiatives, and industry leadership has made us the #1 all-in-one self-improvement system in the world. Led by Brendon Burchard, the renowned high-performance coach and tech entrepreneur, we serve more customers with research-driven personal development tools, courses, livecasts, in-person events, one-on-one coaching, and virtual group coaching than any other brand in the world.

The Opportunity:

Join us in scaling the world’s #1 system for self-improvement. As a Senior Principal Software Engineer, you’ll play a pivotal role in shaping the future of GrowthDay, leading high-impact engineering efforts that fuel our product-led growth and AI innovation.

You’ll work closely with a world-class team of builders, thinkers, and growth leaders to ship fast, test boldly, and scale smart. This is a hands-on role for someone who thrives on turning big ideas into real-world impact, someone who loves owning complex systems, delivering value at speed, and building products that change lives.

What You Will Do In This Role:

• Provide technical guidance and mentorship to a team of world-class engineers, focusing on product-led growth every single day.
• Build and iterate on GrowthDay’s web and mobile apps (Next.js, React Query, SwiftUI, Jetpack Compose, GraphQL, Vercel, AWS Amplify).
• Integrate AI and LLM-powered capabilities that enhance user experience and engagement.
• Own system design and development across the frontend, backend, and infrastructure.
• Identify bottlenecks early and propose smart, scalable solutions to keep things moving.
• Collaborate with Daniel (Director of Growth), the VP of Product, and Brendon to support product-led growth strategy and weekly experiments.
• Present key technical insights, blockers, and trade-offs clearly to peers and leadership.
• Translate Brendon’s high-level product vision into detailed, actionable engineering plans.

Your Impact:

• Foster a culture of fast, impactful experimentation, shipping weekly A/B tests to improve onboarding, activation, retention, and monetization across the app.
• Lead by example with hands-on coding and architecture, while knowing when to step back, unblock, coach, and hold the team accountable with empathy.
• Be the in-person go-to engineering lead who ensures clarity and alignment across functions and helps translate executive vision into clear, executable action.
• Collaborate closely with product, growth, design, and marketing to drive measurable results.
• Work directly with PLG leadership and our CEO, Brendon Burchard, who’s hands-on, product-obsessed, and one of the most recognized personal growth leaders in the world, to translate vision into strategy and weekly testing cycles.

You Are What We Are Looking For If:

• Have 7+ years of engineering experience, including 1+ year within a fast-paced SaaS startup or cross-functional product team.
• Are a seasoned full-stack engineer (Next.js, GraphQL, Swift, Kotlin, AWS Cloud, Vercel).
• Have deep experience with A/B testing, rapid iteration, and product-led growth (PLG) environments.
• Have integrated LLM capabilities into large-scale consumer apps.
• Enjoy mentoring, leading with clarity, and helping others grow.
• Are comfortable pushing for answers, asking why, and driving accountability across teams.
• Want to grow into an engineering leadership path: whether through owning technical strategy, developing people, or driving cross-functional impact.
• Can translate the CEO’s vision into executable product plans

About GrowthDay:

GrowthDay is the world’s leading membership for personal growth and success. We empower people in 100+ countries to become happier and higher performing in every area of their lives. Our proprietary self-improvement tools, live classes, virtual coaching, famous seminars, online courses, pioneering research, social media initiatives, and industry leadership has made  us the #1 all-in-one self-improvement system in the world. Led by Brendon Burchard, the renowned high-performance coach and tech entrepreneur, we serve more customers with research-driven personal development tools, courses, livecasts, in-person events, one-on-one coaching, and virtual group coaching than any other brand in the world.

Why Work With Us?

For one reason: You feel that it’s part of your calling and purpose to be pa