For nearly two decades the U.S. federal government has entrusted Phacil to deliver mission-focused, results-driven technology services & solutions.

We offer a diverse range of solutions evolving around several core competencies to ensure we can solve our customers most complex challenges.

Our areas of focus include: Software Services, Systems Engineering, Integration & Operations (SEI&O), Cybersecurity, Managed Services, Cloud Services, and Artificial Intelligence Solutions. With our team of over 700 forward-thinking and innovative employees, we provide the U.S. federal government the highest level in performance and expertise exceeding their mission-critical needs while demonstrating the highest ethical standards every day.

Headquartered in Mc Lean, VA, Phacil a formerly Employee-Owned company was acquired by By Light, LLC a professional IT services company in March of 2019. Our internal mantra is “ferocious execution”, which simply put, means that our employees go the extra mile to ensure that nothing but the best is delivered to exceed our customers’ expectations and needs. Our proven-track record of excellence is a testimony of our can-do attitude. We have grown over 400% in the past six years with a compounded annual growth rate of 31% since 2010.

The marriage of these two great companies, By Light, LLC and Phacil, LLC, will enable our team to successfully capture and execute even larger and more complex opportunities.