Senior Software Development Engineer

UTC Climate, Controls & Security is a leading provider of heating, ventilating, air conditioning and refrigeration systems, building controls and automation, and fire and security systems leading to safer, smarter, sustainable and high-performance buildings. UTC Climate, Controls & Security is a unit of United Technologies Corp., a leading provider to the aerospace and building systems industries worldwide.

The Fire and Security Products group at UTC Climate, Controls & Security develops a comprehensive product portfolio to protect buildings, people and assets; providing innovative security products that include advanced software and hardware, IP solutions, wireless communications, electronic locking systems and mobile applications, fire extinguishers, carbon monoxide and smoke detectors, and fire suppression systems. Among its leading brands are Lenel, Interlogix, Supra, Onity, Kidde, Fenwal, and Marioffoffering robust security and life safety systems, affordable, flexible lock and key management solutions, and fire safely equipment and systems.

Developers at Lenel have a passion for writing object-oriented, reusable enterprise-level software. If you are an experienced backend developer with strong C++ or C# skills looking for an opportunity to build a rock solid foundation of APIs for our next generation of web applications, we want to meet you. We are seeking an experienced results-oriented Senior Software Development Engineer to contribute to our growing delivery team.

The Senior Software Development Engineer will review and contribute to requirements, plan and estimate development work, architect, design and implement software solutions, assist with test plans and documentation, and maintain those solutions. This position produces significant results through a broad and deep functional knowledge, demonstration of independence, sound engineering judgment, the building of strong coaching/mentoring peer relationships, and skills in software design, programming, and enterprise software.

Working in a small cross-functional team of senior development and test engineers and technical writers, the Senior Software Development Engineer will be responsible for developing and maintaining complex components of a project. This position contributes to their team by applying their advanced knowledge of one or more functional areas or disciplines.

What you ll do:

  • Architect, design, and implement new features within an existing codebase of services and applications
  • Collaborate with global development teams to ensure the integrity of the application throughout the development life cycle
  • Translate agile software development stories into reusable units of functionality
  • Champion best practices for software development



  • A minimum of five (5) years of experience developing server applications
  • Strong knowledge of a C++ or C#
  • REST API and other web services knowledge and experience
  • Experience with multi-threaded server applications
  • Experience working with databases (preferably Microsoft SQL Server or Oracle)
  • Excellent troubleshooting and problem-solving skills
  • Comfortable with both collaborative and independent work
  • Excellent written and verbal communication skills
  • Assertive and respectful in technical discussions


  • Experience with Microsoft Visual Studio.
  • Knowledge of Multiple languages and programming paradigms
  • Experience with Advanced Message Queuing Protocol (AMQP) or other message queue technologies
  • Experience integrating hardware and/or working with low level device protocols
  • Web development experience
  • Experience working on a Scrum team


  • Bachelor of Science or higher in Computer Science, Software Engineering, or related field
  • Master s degree desired

United Technologies Corporation is An Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status, age or any other federally protected class.

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