Senior Software Engineer - Connected Devices

**Please Note: This position is open only to candidates authorized to work in the U.S. without current or future visa sponsorship and those that are currently located in the Kansas City area.**

Sunlighten is on the lookout for a Senior Software Engineer to help us build digital tools that support healthier lives. We are looking for someone with expertise in connected devices, mobile app integration, and system architecture to help take our digital ecosystem to the next level. In this role, you will partner closely with Product and Engineering teams to evaluate the technical feasibility of new features, contribute to architecture decisions, and help translate product ideas into scalable technical solutions. You will also collaborate with product managers, hardware engineers, and our global engineering team to design and build a reliable, seamless, and scalable connected experience for our customers.  This is an exciting opportunity to contribute to innovative projects in a mission-driven environment where wellness and technology go hand-in-hand.

At Sunlighten, we're not just about infrared saunas, we’re on a mission to improve lives through innovative health and wellness solutions. As a global leader in infrared sauna therapy, we are expanding rapidly and need a Senior Software Engineer who is quality-focused and solutions-oriented to keep Sunlighten on this incredible trajectory.

Celebrating 25 years of innovation, Sunlighten has grown from its Kansas City roots to establish a global footprint, including expansion into the UK. With the global wellness market projected to reach $7 trillion in 2026, we are proud to be part of this dynamic and holistic shift. Sunlighten prioritizes helping individuals unlock the transformative benefits of infrared saunas for a healthier, more balanced life. We have the lofty yet simple promise to help people feel better and do more of what they love. It’s what drives us every day.

Duties/Responsibilities: 

• Provide technical leadership in the development and evolution of Sunlighten’s connected device ecosystem. 
• Design and build software solutions that enable reliable communication between connected devices, mobile applications, and cloud services. 
• Evaluate the technical feasibility and architectural impact of new product features, translating product requirements into scalable technical solutions. 
• Contribute to application and cloud development, including APIs, backend services, and AWS infrastructure supporting connected products. 
• Collaborate cross-functionally with hardware, electrical, mobile, and product teams to define solutions and deliver new capabilities and improvements. 
• Partner with Program Manager and product leadership to support planning, prioritization, and delivery of engineering initiatives. 
• Partner closely with Product leadership during early concept and roadmap planning to evaluate technical feasibility, architectural impact, and implementation approaches. 
• Serve as the primary technical partner for Product leadership in the U.S., helping translate product vision into scalable technical solutions. 
• Mentor engineers and promote engineering best practices through code reviews, troubleshooting, and knowledge sharing. 
• Assess third-party technologies and build-vs-buy options to support system performance and scalability. 
• Drive continuous improvement by identifying opportunities to enhance system reliability, development efficiency, and testing practices. 
• Stay current with emerging technologies and trends in IoT, connectivity, and cloud platforms. 

• 6+ years of software engineering experience, ideally within connected products, IoT platforms, or embedded systems 
• Strong experience with React and modern JavaScript/TypeScript frameworks 
• Strong experience with Android Native development 
• Experience building cloud-based services and infrastructure using AWS 
• Experience developing and supporting APIs, backend services, and device-to-cloud integrations 
• Solid understanding of Bluetooth, Wi-Fi, and networking protocols used in connected devices 
• Experience contributing to software architecture for connected products and IoT ecosystems 
• Proven ability to collaborate effectively across cross-functional and globally distributed engineering teams 

• Hybrid Work Schedule: Enjoy the flexibility of working remotely part of the week.
• Competitive Paid Time Off Policy + Paid Holidays + Floating Holidays
• Fully Equipped Fitness Center On-Site
• Free Lunch Program featuring a James-Beard Award Winning Chef
• Health (HSA & FSA Options), Dental, and Vision Insurance
• 401(k) with company contributions
• Profit Sharing
• Life and Short-Term Disability Insurance
• Professional Development and Tuition Reimbursement
• Associate Discounts on Saunas, Spa Products and Day Spa Services

Sunlighten provides equal employment opportunity. Discrimination of any type will not be tolerated. Sunlighten is an Equal Opportunity / Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability, protected veteran status or any other characteristic protected by state, federal, or local law.