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Principal Software Engineer

Alarmcom

Tysons, Virginia (Tysons, VA) permanent

Posted: January 28, 2026

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Quick Summary

We're looking for a versatile Principal Software Engineer to join our team, with experience in smart home technology, video analytics, and large scale data processing.

Job Description

Principal Software Engineer

Do you love tinkering with devices? Have you automated your own home? Do you love to mentor and collaborate with other engineers?

If the above holds true for you, then we would love to talk to you! Alarm.com is looking for a versatile Principal Software Engineer to join our team. We’re doing work in smart home technology, video analytics, large scale data processing, and much more. You’ll have the opportunity to work across a variety of technology domains and own projects from design to deployment.

We have a growing engineering department and we’re looking for people that are excited to mentor and collaborate with more junior engineers. You will own projects and you must be able to communicate effectively and blend multiple business needs in your work.

WHAT CAN YOU DO FOR ALARM.COM?

A Principal Software Engineer oversees the research, development, and design of engineering projects for the company. The Principal Software Engineer will support the business objectives by collaborating with business partners to identify opportunities and drive resolution; partnering with business stakeholders to define priorities; identifying short- and long-term solutions; and leading cross-functional partnership.

Very few small companies innovate and develop across such a broad range of technologies as Alarm.com. This position is ideal for the candidate who seeks a small, friendly company culture where one can work closely with smart and highly productive people. Getting to work with cutting edge software and hardware to develop outstanding consumer products is the icing on the cake.

DAY-TO-DAY RESPONSIBILITIES

• Mentor groups of junior, senior, lead, and staff engineers

• Help build and cultivate innovation by driving cross-collaboration and execution of projects across multiple teams and knowledge domains

• Develop full stack software for a wide variety of platforms and technologies

• Provide technical thought leadership in designs and major software components, systems, and features and effect their buy-in

• Engage in the research, evaluation, and application of new technologies and methodologies to solve challenging problems and optimize engineering solutions

• Work closely with product owners and business stakeholders to execute strategies and define roadmaps

• Work hard and be flexible: we have quick development cycles, evolving requirements, and lots of cross-team collaboration.

• Be an expert on system architecture, functionality, and data flows as well as operations processes and tools

• Supervise and oversee the technical aspects of multiple projects

• Exercise good judgment. Know when to work quickly, when to build a robust solution, and also when building a new solution is not required. Your work will be used by multiple business units, so you will need to consider many use cases when developing.

• Bring your ideas! We want our engineers to collaborate on product development, not blindly build to a spec.

• Other duties as assigned.

WHAT DO YOU NEED?

• Bachelor’s in Computer Science, Computer Engineering, a related field or equivalent work experience

• 15+ years of professional software development experience

• Experience leading and/or mentoring other engineers with a proven track record of developing people and solutions that are reusable by other engineers

• Proven expertise in object-oriented programming skills; C# and .NET experience is a plus

• Ability to select new frameworks and architecture designs, educate other teams about them and effect their buy-in

• Significant database design, performance, and development experience

• Superior analytical skills with a problem-solving attitude

• Ability to perform across teams

• Independent thinker and problem solver

• Understanding of UI tech stacks, needs and limitations

• Expertise in object-oriented design and software lifecycles

• Experience working with physical systems and hardware devices a major plus

Please note that sponsorship of new applicants for employment authorization, or any other immigration-related support, is not available for this position at this time.

WHY WORK FOR ALARM.COM?

• Collaborate with outstanding people: We hire only the best. Our standards are high and our employees enjoy working alongside other high achievers.

• Make an immediate impact: New employees can expect to be given real responsibility for bringing new technologies to the marketplace. You are empowered to perform as soon as you join the Alarm.com team!

• Gain well rounded experience: Alarm.com offers a diverse and dynamic environment where you will get the chance to work directly with executives and develop expertise across multiple areas of the business.

• Focus on fun: Alarm.com places high value on our team culture. We even have a committee dedicated to hosting a stand-out holiday party, happy hours, and other fun corporate events.

• Alarm.com values working together and collaborating in person. Our employees work from the office 4 days a week.

COMPANY INFO

Alarm.com is the leading cloud-based platform for smart security and the Internet of Things. More than 7.6 million home and business owners depend on our solutions every day to make their properties safer, smarter, and more efficient. And every day, we’re innovating new technologies in rapidly evolving spaces including AI, video analytics, facial recognition, machine learning, energy analytics, and more. We’re seeking those who are passionate about creating change through technology and who want to make a lasting impact on the world around them.

For more information, please visit www.alarm.com.

COMPANY BENEFITS

Alarm.com offers competitive pay and benefits inclusive of subsidized medical plan options, an HSA with generous company contribution, a 401(k) with employer match, and paid holidays, wellness time, and vacation increasing with tenure. Paid maternity and bonding leave, company-paid disability and life insurance, FSAs, well-being resources and activities, and a casual dress work environment are also part of our outstanding total rewards package!

Alarm.com is an Equal Opportunity Employer

In connection with your application, we collect information that identifies, reasonably relates to or describes you (“Personal Information”). The categories of Personal Information that we may collect include your name, government-issued identification number(s), email address, mailing address, other contact information, emergency contact information, employment history, educational history, criminal record, and demographic information. We collect and use those categories of Personal Information about you for human resources and other business management purposes, including identifying and evaluating you as a candidate for potential or future employment or future positions, recordkeeping in relation to recruiting and hiring, conducting criminal background checks as permitted by law, conducting analytics, and ensuring compliance with applicable legal requirements and Company policies. By submitting your application, you acknowledge that we may retain some of the personal data that you provide in your application for our internal operations such as managing our recruitment system and ensuring that we comply with labor laws and regulations even after we have made our employment decision.

Notice To Third Party Agencies:
Alarm.com understands the value of professional recruiting services. However, we are not accepting resumes from recruiters or employment agencies for this position. In the event we receive a resume or candidate referral for this position from a third-party recruiter or agency without a previously signed agreement, we reserve the right to pursue and hire those candidate(s) without any financial obligation to you. If you are interested in working with Alarm.com, please email your company information and standard agreement to [email protected].

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