Senior Full Stack Web Developer

Senior Full Stack Web Developer

Location: Phoenix, AZ/Austin, TX SiteOwl ( is a B2B SaaS application that enables customers to design, install, and maintain physical security systems. We are a small, startup team of 15 that was recently acquired by the multinational company ASSA ABLOY. This means we offer the feel of a small team with the resources of a large company. Our primary customers are system integrators and corporate physical security teams. The best analogy for our product is Google Maps for physical security systems. System designers upload their real-world floor plans, then drag various types of pins representing cameras, card readers, alarms, or other devices onto the map and edit details about those devices. Technicians then use those designs to install or update the security system using our mobile apps in the field. Offline is a primary use case for our customers who use our mobile applications while at Wi‑Fi and cellular-challenged locations.

What you will be doing

We have recently completed a rebuild of our existing application with modern technologies. Using Typescript, React, MAUI, Capacitor, and Supabase, we have built a small, debt-free, AI-friendly codebase that runs across web, mobile, and the back end. This allows us to be agile and ship often. We have a long backlog of new features we plan to add to the application, including building AI agents that can help design physical security systems, project manage the installation of those systems, and keep up with the maintenance and compliance of those systems.

Key areas you will contribute to in the role include:

• Build software that impacts how physical security infrastructure is deployed and maintained at hospitals, universities, financial institutions, and Fortune 500 campuses.
• Help add new features to SiteOwl’s existing applications using Typescript, React, Material UI, Capacitor, Supabase, and Node.
• Create back-end RESTful APIs with documentation that will be consumed by our customers.
• Implement responsive front-end features that work in desktop and mobile environments.
• Write automated tests and perform code reviews.
• Work with our product team to help design and specify features our customers love.
• Work with our engineering leadership to help architect those features using the right tools and libraries.
• Work with AI development tools to implement those features into our codebase.

What we are looking for:

• Knowledgable - You are a real pro and deeply understand web development and it's ecosystem.
• Intellectually Curious - You are constantly learning and working to improve yourself.
• Entrepreneurial - You enjoy wearing many hats and hustling to get things done.
• Problem Solver - You are a critical thinker who brings solutions, not just problems to the table.
• Hard Working - You aren't afraid of a tough deadline.
• Scrappy & Fast - You like finding creative ways to quickly move projects forward.
• Good Communicator - You easily explain complex technical issues to a non-technical audience.
• Team Player - You put team success first and have a high degree of personal character.
• Accountable - You take ownership and have pride in your work.
• Multi-tasker - You can manage time and projects proficiently, and you have a high degree of organization.
• Ability to travel (up to 10%) and meet to the requirements of customers.
• Ability to lift/carry up to 50 lbs. of materials for presentations.

Education and/or experience:

• Your background includes a College/University degree (preference for specialization in a technical field, such as Computer Science), or have work experience commensurate with, minimum high school/GED diploma.
• Minimum of 5 years of professional development experience.
• A solid foundation of HTML, CSS, Javascript, and Restful APIs.
• Experience shipping rich apps using React.
• Experience architecting and shipping backend RESTful APIs using Node.js.
• Familiarity with front-end and backend performance best practices.
• Experience with SQL and SQL databases.
• Experience with common software development tools and processes.
• Experience with agentic AI development tools like Cursor or Claude Code.
• Experience with DevOps and working with cloud platforms.
• Proficiency in Microsoft Office tools.
• Experience with React Native, Android, or iOS development is a plus.
• An eye for quality UI/UX is a plus.

Why Join SiteOwl?

Growth Potential: This role is designed to evolve into a full-cycle sales closing position within the first year, offering opportunities for professional development and advancement.

Innovative Culture: Be part of a company that values innovation, adaptability, and creative problem-solving.

Impact: Play a critical role in shaping the future of security management technology.

Collaborative Team: Join a team of passionate professionals dedicated to success and mutual growth.

ASSA ABLOY offers a competitive compensation and benefits package, including bonus, a 401(k) plan, education assistance, and an environment that reflects our commitment to our employees.

The wage range for this role considers a broad scope of factors that are considered when making compensation decisions. Pay within each range is based on a variety of factors including, but not limited to, to primary work job-related knowledge, skills, experience, training, licensure and certifications, business requirements, geographic location and other business and organizational needs. This salary range is a reasonable estimate for this position at the time of posting.

ASSA ABLOY conducts regular review of compensation ranges and therefore reserves the right to alter this range at any given time.

Working for ASSA ABLOY means that you will be part of a dynamic environment, developing innovative solutions to improve our customers' lives.

As the global leader in door opening solutions, we are using the latest technologies to open doors to events, hospitals, education, homes, hotels, airports and businesses.

Joining ASSA ABLOY means being part of a fast-moving company with many opportunities.

Let's open the doors to the future - together!

ASSA ABLOY is an Equal Opportunity Employer/Minorities/Females/Disabled/Veteran.

We are the ASSA ABLOY Group Our people have made us the global leader in access solutions. In return, we open doors for them wherever they go. With nearly 63,000 colleagues in more than 70 different countries, we help billions of people experience a more open world. Our innovations make all sorts of spaces - physical and virtual - safer, more secure, and easier to access. As an employer, we value results - not titles, or backgrounds. We empower our people to build their career around their aspirations and our ambitions - supporting them with regular feedback, training, and development opportunities. Our colleagues think broadly about where they can make the most impact, and we encourage them to grow their role locally, regionally, or even internationally. As we welcome new people on board, it’s important to us to have diverse, inclusive teams, and we value different perspectives and experiences.

We are the ASSA ABLOY Group Our people have made us the global leader in access solutions. In return, we open doors for them wherever they go. With nearly 63,000 colleagues in more than 70 different countries, we help billions of people experience a more open world. Our innovations make all sorts of spaces - physical and virtual - safer, more secure, and easier to access. As an employer, we value results - not titles, or backgrounds. We empower our people to build their career around their aspirations and our ambitions - supporting them with regular feedback, training, and development opportunities. Our colleagues think broadly about where they can make the most impact, and we encourage them to grow their role locally, regionally, or even internationally. As we welcome new people on board, it’s important to us to have diverse, inclusive teams, and we value different perspectives and experiences.

We are the ASSA ABLOY Group Our people have made us the global leader in access solutions. In return, we open doors for them wherever they go. With nearly 63,000 colleagues in more than 70 different countries, we help billions of people experience a more open world. Our innovations make all sorts of spaces - physical and virtual - safer, more secure, and easier to access. As an employer, we value results - not titles, or backgrounds. We empower our people to build their career around their aspirations and our ambitions - supporting them with regular feedback, training, and development opportunities. Our colleagues think broadly about where they can make the most impact, and we encourage them to grow their role locally, regionally, or even internationally. As we welcome new people on board, it’s important to us to have diverse, inclusive teams, and we value different perspectives and experiences.