Senior Software Engineer (.NET, C#, Protocols Team) at Alarmcom

Are you passionate about designing and building technology that connects the physical and digital worlds? Do you thrive on leading complex projects and mentoring other engineers, while working with cutting-edge IoT devices? Alarm.com is seeking a Senior Software Engineer to join our Protocols Team, which develops and maintains the communication backbone that powers millions of smart home devices worldwide. In this role, you will drive the design and delivery of robust, scalable solutions that enable seamless device interoperability. You will collaborate across teams to define technical strategy, guide architecture decisions, and ensure high-quality implementation. Your work will directly influence the performance, security, and reliability of our platform. If you enjoy solving challenging problems, improving processes, and mentoring future engineering talent, we would love to talk to you. Alarm.com values working together and collaborating in person. We are building a new team in Krakow. Our employees work fully from the office with possibility to work remotely occasionally. What You Will Do • Lead the design, development, and maintenance of full-stack software across diverse platforms and technologies. • Architect solutions that balance scalability, performance, and maintainability for device protocol communications. • Research emerging technologies and champion adoption where they can bring significant value. • Guide the software development life cycle from requirements gathering through deployment, monitoring, and optimization. • Collaborate with product managers, QA, and other engineering teams to deliver impactful solutions. • Make strategic technical decisions, setting direction for projects and influencing the broader team’s approach. • Mentor junior and mid-level engineers, providing code reviews, architectural coaching, and career guidance. • Contribute innovative ideas and drive continuous improvement in both product and process. What You Bring • Bachelor’s or Master’s degree in Computer Science, Computer Engineering, or a related field, or equivalent professional experience. • 5+ years of professional software development experience, with proven success in delivering complex projects. • Advanced object-oriented programming skills, preferably in C#. • Strong experience with database design, SQL, and backend services. • Proficiency with modern JavaScript frameworks such as Ember.js, Angular, or React a plus. • Experience in the IoT and/or home automation field is a plus. • Solid track record of implementing and improving unit testing and automated testing strategies. • Experience in distributed systems, real-time communications, or high-performance applications. • Excellent communication skills and ability to lead cross-functional collaboration. Why You Will Love Working Here • Collaborate with exceptional peers. Work alongside talented engineers who value innovation and excellence. • Shape technical direction. Influence architecture decisions that impact millions of connected devices globally. • See your impact. Watch your solutions interact with and power IoT hardware in real-world environments. • Mentor and grow talent. Help guide the next generation of engineers while building high-performing teams. • Work with cutting-edge technology. Our stack includes C#, .NET, SQL Server, Kafka, Ember.js, and native iOS/Android apps. • Long-term employment based on a permanent employment contract (CoE). • Attractive benefits package: including medical care, life insurance, sports package, annual budget for professional development ($2,000). 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. EBS Sp. z o.o. is a dynamically growing Polish technology company with over 35 years of experience, specializing in the development of smart security solutions. We are part of the American corporation Alarm.com, a leading global provider of intelligent security solutions for homes and businesses. For more information, please visit www.alarm.com or ebssmart.com 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 compliance with labor laws and regulations, even after we have made our employment decision.We will retain this data for a maximum of 3 years after the end of the recruitment process. The data administrator is EBS Sp. z o.o.