Software Engineer II

Tysons, VAfull timeOn Site

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mid

$88k–$123k

H1B: no

Alarmcom Principal Software Engineer at Alarm.com leading architecture and engineering for the emPower team focused on IoT, smart home automation, and connected-device control. Provides hands-on technical leadership across cloud services, devices, and applications.

Responsibilities

As a Principal Software Engineer on the emPower team, you will help design and evolve systems that coordinate physical devices, cloud services, mobile and web applications, automation engines, partner integrations, and data pipelines. You will work across product, firmware, platform, operations, and application engineering teams to turn ambiguous business and technical needs into reliable, scalable, and maintainable software systems.
Day-to-Day Responsibilities
Provide hands-on technical leadership for systems spanning IoT device control, smart home automation, energy, HVAC, water, and connected-device experiences.
Lead architecture and design for major software components, services, APIs, data flows, and integration patterns.
Help evolve existing monolithic systems into more modular, scalable, reliable, and maintainable systems.
Partner with product, firmware, platform, operations, and application teams to turn ambiguous needs into clear technical direction.
Mentor engineers at multiple levels and help raise the technical bar through design reviews, code reviews, technical guidance, and reusable patterns.
Drive cross-team collaboration and execution across multiple technical domains.
Evaluate new technologies, frameworks, and methodologies where they can materially improve product capabilities or engineering outcomes.
Reason across the full product stack, including backend services, databases, APIs, web and mobile experiences, device integrations, automation logic, and operational tooling.
Be an expert on system architecture, functionality, data flows, operational processes, and the tools needed to operate production systems effectively.
Provide technical thought leadership for major software components, systems, and features, earning alignment and driving adoption across teams.

Qualification

Bachelor’s degree in Computer ScienceProven experience designingSignificant database design

Required

Bachelor’s degree in Computer Science, Computer Engineering, a related field, or equivalent professional experience.
15+ years of professional software development experience.
Proven experience designing, building, and delivering complex software systems.
Strong object-oriented programming skills; experience with C#/.NET or a similar object-oriented language is required; direct C# and .NET experience would be a major plus.
Significant database design, performance, and development experience.
Experience leading technical direction across teams and influencing architecture beyond a single project or codebase.
Experience mentoring engineers and helping develop people, practices, and reusable technical solutions.
Ability to select appropriate frameworks, architecture patterns, and technical approaches, then educate teams and drive adoption.
Strong analytical skills and a practical problem-solving mindset.
Ability to lead and influence across teams without relying solely on reporting authority.
Ability to reason across the full product stack, including backend services, data stores, APIs, device integrations, and web/mobile user experiences.
Strong understanding of object-oriented design, software development lifecycles, and long-term maintainability concerns.