Senior Software Engineer New Tysons, Virginia

Alarm; Tysons (VA); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Hackathons

Team events

Company-wide celebrations

Career growth opportunities

Job summary

Alarm.com is seeking a Senior Software Engineer for its Access Control team to redefine security through a cloud-based platform. You will design, develop, and optimize robust access control solutions, mentor junior engineers, and lead cross-functional projects—from architecture to deployment—using the latest technologies.

You will collaborate with product managers and device engineers, shaping the future of security while delivering scalable, maintainable software across web and mobile

Qualifications

• 5+ years of professional software development experience.
• Strong object-oriented programming skills; experience with C#/.NET is a plus.
• Experience with database design and development (SQL Server preferred).
• Proficiency in developing backend services and APIs.
• Experience with unit testing, integration testing, and CI/CD pipelines.
• Knowledge of distributed systems, event-driven architecture, and messaging technologies (Kafka is a plus).
• Experience working with IoT, hardware, or embedded systems is a plus.

Responsibilities

• Design and develop full-stack software solutions across a variety of platforms and technologies.
• Lead technical projects, making architectural decisions and ensuring scalability, security, and performance.
• Research, evaluate, and apply new technologies to solve complex engineering challenges.
• Take part in the entire development lifecycle, from requirements gathering to deployment.
• Balance speed and robustness—know when to iterate quickly and when to build scalable, maintainable solutions.
• Collaborate with cross-functional teams, including product managers, device engineers, and other software teams.
• Mentor junior engineers, fostering technical growth and knowledge-sharing within the team.
• Contribute to a culture of innovation by bringing new ideas and technical improvements to the table.

Skills

Object-oriented programming

Education

Bachelor’s in CS/CE or related field

Tools

C#/.NET

SQL Server

Kafka

Ember.js

Job description

Senior Software Engineer - Access Control

Are you ready to redefine access control and develop cutting-edge security solutions that make businesses smarter and safer? Do you enjoy leading technical initiatives, mentoring engineers, and solving complex challenges across the full stack? If so, we want you to join our Access Control team as a Senior Software Engineer!

Our mission is to provide businesses with an advanced access control solution that ensures security, simplifies management, and enhances efficiency. Our cloud-based platform enables businesses to manage access control, intrusion detection, and video surveillance seamlessly through Alarm.com's user-friendly web and mobile applications.

With features like multi-site management, swipe to disarm, expiring access, access history reports, and bulk user management, our solution is designed to meet the evolving needs of modern businesses. Smarter Access Control is not just about security- it's about delivering a comprehensive, integrated system that improves operational efficiency.

As a Senior Software Engineer, you will play a key role in designing, developing, and optimizing robust access control solutions. You’ll collaborate with cross-functional teams, mentor junior engineers, and drive technical excellence across our platform. This is an opportunity to lead impactful projects, work with the latest technologies, and shape the future of security.

Responsibilities

• Design and develop full-stack software solutions across a variety of platforms and technologies.
• Lead technical projects, making architectural decisions and ensuring scalability, security, and performance.
• Research, evaluate, and apply new technologies to solve complex engineering challenges.
• Take part in the entire development lifecycle, from requirements gathering to deployment.
• Balance speed and robustness—know when to iterate quickly and when to build scalable, maintainable solutions.
• Collaborate with cross-functional teams, including product managers, device engineers, and other software teams.
• Mentor junior engineers, fostering technical growth and knowledge-sharing within the team.
• Contribute to a culture of innovation by bringing new ideas and technical improvements to the table.

Requirements

• Bachelor’s in Computer Science, Computer Engineering, or a related field, or equivalent work experience.
• 5+ years of professional software development experience.
• Strong object-oriented programming skills; experience with C#/.NET is a plus.
• Experience with database design and development (SQL Server preferred).
• Proficiency in developing backend services and APIs.
• Experience with unit testing, integration testing, and CI/CD pipelines.
• Knowledge of distributed systems, event-driven architecture, and messaging technologies (Kafka is a plus).
• Experience working with IoT, hardware, or embedded systems is a plus.

Why Work for Alarm.com?

• Collaborate with outstanding people – Work alongside talented engineers who are passionate about innovation and problem-solving.
• Make an immediate impact – Own projects that have a direct impact on businesses using our security solutions.
• Work with real-world IoT devices – See your code in action with the numerous access control and security devices we integrate with.
• Be empowered – Take ownership of features, drive technical decisions, and build best-in-class products.
• Work with the latest technologies – Our tech stack includes C#, .NET, SQL Server, Kafka, Ember.js, and mobile applications.
• Enjoy a strong team culture – We prioritize collaboration, professional growth, and fun, with events like hackathons, team events and company-wide celebrations.

At Alarm.com, we believe in the power of technology to make security smarter and more intuitive. If you’re excited about leading innovative projects and working on mission-critical security solutions, we’d love to hear from you!