Demo

Full Stack Software Engineer

Kastle Systems
Kastle Systems Salary
Falls, VA Full Time
POSTED ON 9/17/2026
AVAILABLE BEFORE 11/25/2026
Overview

Kastle Systems is looking for a Full Stack Software Engineer to join our team in Falls Church, VA to help us grow and support our internal tools.

As a Kastle Systems Software engineer, you will have an opportunity to contribute to our award winning* highly available and distributed platform that is deployed on platforms ranging from microcontrollers, headless Linux IoT controllers, datacenters, and the AWS and Azure clouds. Our products work to keep people safe while adding convenience and providing excellent customer service to the building managers and enterprise customers that use our Security-As-A-Service platform.

The successful candidate will be one who is looking to make a big impact in the company in which they join. This position will play a hands on role in building and supporting the internal Kastle toolset that is used 24/7 by Kastle operations staff to provide the highest level quality of service and support to our customers. This position will be perfect for someone who enjoys being exposed to a variety of technologies up and down the technology stack, including database, application, and front end layers.

  • Kastle Systems has won numerous awards for its products, including the SDM Integrator of the Year and various new product of the year awards.

In addition to a great work environment, we provide excellent benefits (Medical/Dental/Vision, 401K, Tuition/Training Assistance, BrightHorizons Lifestyle Assistance, Wellness Program, etc.). We are proud to be a Certified Great Place to Work with awards for being a Top Work Place with Top DE&I Practices! For more informaton about what it's like to work with us, please visit Kastle Careers.

In addition to a great work environment, we provide excellent benefits (Medical/Dental/Vision, 401K, Tuition/Training Assistance, BrightHorizons Lifestyle Assistance, Wellness Program, etc.) and we're proud to be a Certified Great Place to Work! For more information about what it's like to work with us, please visit Kastle Careers.

Responsibilities

  • Support and expand Kastle’s internal applications, generally written in PHP, C#, and JavaScript
  • Provide internal integration support for Kastle’s APIs.
  • Support the relational database (SQL Server) to which the systems are backed, through procedure reviews and performance analysis
  • Problem-solve issues and help to develop and improve systems to meet business needs
  • Work with QA to maintain adequate test coverage of Kastle’s applications and business rules
  • May be required to take part in On-Call rotations

Qualifications

Required:

    • Bachelors Degree in Computer Science, Computer Engineering, or similar degree that provides a solid foundation in computer programming.
    • 3-5 years experience in application development using C#
    • 3-5 years experience in front end development using HTML CSS and Javascript, with popular libraries and frameworks such as jQuery/Bootstrap, Angular/React, Vue.js, or others
    • 3-5 years experience working with relational databases (SQL) – preferably SQL Server, including but not limited to: Performance troubleshooting, Stored Procedure design/review, data analysis
    • 1-2 years experience with CI/CD workflow in a cloud container orchestration environment (Kubernetes).
    • Ability to problem solve in a fast-paced, agile team environment
    • Ability to work independently with minimal supervision and meet deadlines
    • Excellent written and verbal US English communication skills
Preferred

    • 1-2 years experience incorporating Ai prompting into the development workflow to maximize development velocity.
    • Experience programming in Python and PHP
Company Overview

The property technology space is growing rapidly, and Kastle is leading the way. Kastle is the leader in managed security, with a track record of introducing innovative technologies to serve over 460M square feet of real estate globally. Clients span the commercial and multifamily real estate, education, and construction industries and the customers they serve. Delivering a world class customer experience drives everything we do, and Kastle’s mission is to be our customers’ best service provider and to ensure that their security the most effective, efficient and convenient. Kastle's integrated security solution, including access control, video, and remote video monitoring, significantly reduces costs and improves the critically important 24x7 performance for building owners, developers and tenants.

Equal Opportunity Statement

At Kastle, we believe that diversity makes us stronger - at work and in the world. Kastle Systems International, LLC 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, age, protected veteran status, marital status, pregnancy or any other basis protected by applicable federal or state laws.

Salary.com Estimation for Full Stack Software Engineer in Falls, VA
$104,625 to $126,871
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