Senior Windows Software Engineer – AI-Powered Authentication Experiences & Next-Generation Account Platform Development

Join arenaflex and Shape the Future of Windows Authentication Experiences

Are you ready to be part of a transformative journey in digital experiences? At arenaflex, we're not just building software – we're crafting the way millions of people interact with technology every single day. Our SPACE (Service Platform for Account and Connected Experiences) team within the Windows+Devices division is at the forefront of delivering innovative services that illuminate Microsoft Account experiences across all devices and platforms. We are passionate about collaborating to build brilliant and inclusive account experiences that empower customers to make the most of what modern technology has to offer.

If you're a creative technologist who thrives on solving complex problems and wants to make a meaningful impact on how users authenticate and interact with their devices, we invite you to join our dynamic team in Reno and help us redefine the future of Windows experiences.

About the SPACE Team

The SPACE team is responsible for driving innovation for new marquee user interfaces used by Windows customers around the globe. We work on cutting-edge features that touch every Windows user, from authentication solutions like Passkeys to sophisticated notification systems across mobile applications and Windows platforms. Our mission is to create seamless, secure, and intuitive experiences that make technology feel invisible yet impossibly powerful.

When you join the SPACE team, you'll become part of a collaborative ecosystem that includes Engineers, Program Managers, UX Designers, AI/ML Researchers, and Customer Advocates – all working together toward a shared vision of excellence. This cross-functional collaboration ensures that every feature we deliver is not only technically outstanding but also genuinely useful and delightful for our users.

What You'll Do

As a Programmer II in the SPACE team, you will be responsible for designing, developing, testing, and deploying high-quality software solutions for Windows users. Your work will directly impact how hundreds of millions of people experience authentication and account management across the Windows ecosystem.

Key Responsibilities

• Develop innovative authentication solutions using C++, WinRT, and WinUI to create next-generation experiences like Passkeys and secure account access across all Windows devices


• Build client-driven notification platforms that deliver timely, relevant, and personalized communications to users across mobile applications and Windows environments


• Collaborate with cross-functional teams including Engineers, Program Managers, UX Designers, AI/ML Researchers, and Customer Advocates to deliver features that leverage AI technologies in seamless and polished ways


• Design and implement features that utilize artificial intelligence technologies including speech recognition, computer vision, natural language processing, and machine learning


• Work with multimodal input systems to create flexible, accessible authentication and interaction paradigms


• Contribute to the technical vision and strategy of building scalable architecture with exceptional fundamentals including performance, power efficiency, and reliability


• Participate in the full development lifecycle from initial concept and design through implementation, testing, deployment, and ongoing maintenance


• Mentor and learn from senior engineers and architects who shape the technical direction of our platform


• Ensure code quality by following best practices including design patterns, comprehensive testing, debugging, and continuous improvement

What We're Looking For

We're seeking a collaborative, inclusive, and customer-focused developer who is excited about building the future of Windows authentication experiences. If you're passionate about creating high-quality Windows experiences powered by cutting-edge technologies, you might be exactly who we're looking for.

Essential Qualifications

• Passion for excellence – A genuine enthusiasm for developing high-quality Windows experiences that are powered by state-of-the-art technologies


• Educational background – Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent relevant experience)


• Professional experience – Four or more years of experience (or equivalent relevant experience) in software development using technologies such as C++, WinUI, or XAML


• Technical proficiency – Hands-on experience with software engineering principles and best practices, including design patterns, code quality, testing, debugging, and performance optimization


• Development lifecycle expertise – Experience in the full development lifecycle of shipping software at scale


• Communication skills – Excellent verbal and written communication abilities with the capacity to articulate complex technical concepts to diverse audiences


• Collaboration mindset – Ability to work independently and as part of a cohesive, supportive team


• AI/ML integration experience – Experience developing features and user experiences that utilize AI technologies such as speech, vision, and other machine learning capabilities

Preferred Qualifications

• Experience with Windows Hello and biometric authentication systems


• Background in security-focused development and cryptographic implementations


• Knowledge of cross-platform development and universal Windows platform (UWP) concepts


• Familiarity with agile methodologies and DevOps practices


• Understanding of user experience principles and ability to collaborate effectively with UX designers


• Experience with cloud services and distributed systems architecture

Why Join arenaflex?

At arenaflex, we believe that great software is built by great people who are given the resources, support, and freedom to do their best work. When you join our team, you're not just accepting a job – you're embarking on a career journey filled with opportunities for growth, learning, and meaningful impact.

Career Growth and Learning Opportunities

We invest heavily in the professional development of our team members. As part of the SPACE team, you'll have the extraordinary opportunity to learn and grow by working closely with the architects and senior engineers who contribute to the overall technical vision and strategy. You'll gain expertise in:

• Advanced C++ development and Windows runtime technologies


• Cutting-edge AI and machine learning integration


• Scalable architecture design and implementation


• Cross-platform experience development


• Security best practices in authentication systems


• User experience research and design thinking

Your career path at arenaflex is limited only by your ambition. Whether you want to deepen your technical expertise, move into leadership roles, or explore other areas of our business, we'll support you every step of the way.

Work Environment and Culture

We pride ourselves on fostering an inclusive, collaborative, and supportive work environment. Our team culture is built on mutual respect, open communication, and a shared commitment to excellence. We believe that diverse perspectives make us stronger, and we actively seek to create a workplace where everyone feels valued and empowered to contribute their best work.

Located in beautiful Reno, Nevada, you'll enjoy a high quality of life with access to outdoor recreational activities, a vibrant local community, and a reasonable cost of living. Our office provides a modern, comfortable workspace designed to support both collaboration and focused work.

Compensation and Benefits

We recognize that our team members are our most valuable asset, and we're committed to providing competitive compensation and comprehensive benefits. This position offers:

• Competitive hourly rate – $30 per hour with opportunities for overtime


• Comprehensive health coverage – Medical, dental, and vision insurance for you and your family


• Retirement benefits – 401(k) plan with company matching


• Paid time off – Generous vacation, sick leave, and holiday policies


• Professional development – Training programs, conferences, and certification support


• Work-life balance – Flexible scheduling and remote work options where applicable


• Wellness programs – Fitness facilities, wellness coaching, and mental health resources

How to Apply

If you're ready to join a team that's shaping the future of Windows experiences and want to be part of something truly meaningful, we encourage you to apply today. We're looking for passionate, talented individuals who are excited about making a difference in the lives of millions of Windows users worldwide.

To apply for this position, please submit your resume, cover letter, and any relevant portfolio or code samples through our online application portal. Our hiring process includes initial screening, technical interviews, and team fit discussions. We're committed to making the process as smooth and transparent as possible.

At arenaflex, we believe that the best ideas can come from anywhere, and we're excited to see what you'll bring to our team. Join us and help us build the future of Windows authentication experiences!

arenaflex is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status.