Software Engineer (Defense)

Posted Yesterday
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Denver, CO, USA
In-Office
135K-265K Annually
Mid level
Aerospace • Artificial Intelligence • Logistics • Machine Learning • Software • Transportation • Defense
When predictability matters, real-time is already the past.
The Role
Design and build new and existing mission-critical software for aviation and defense, collaborating with cross-functional teams, leveraging modern LLM tools, traveling up to 50%, and working with export-controlled data requiring an active security clearance. Senior hires will focus on high-performance, scalable systems.
Summary Generated by Built In

About Air Space Intelligence

ASI's mission-critical technology powers decision-making across aviation, defense, energy, and other critical infrastructure domains. Backed by top-tier investors including Andreessen Horowitz, Spark Capital, and Renegade Partners, ASI delivers operational decision superiority—compressing days of analysis into seconds of action. ASI is leading the way and pushing the boundaries of what’s possible.

What You Will Do:

Your responsibilities will span from conceptualizing and building innovative products from scratch (0 to 1) to enhancing and optimizing existing solutions as they evolve (1 to n). You will operate in a dynamic and fast-paced environment, where you will have the opportunity to shape and set the standards for excellence. You will work with a cross-functional team, including end-users, other engineers, and deployment strategists. You will solve real problems that make a difference, providing decision-making tools to end users and improving the safety of our airspace.


What We Value:

  • Proficiency in at least one modern programming language. We work in Rust and Python and expect you to have the foundation to quickly learn these languages.

  • Proficient in leveraging modern LLM tools to accelerate development workflows and enhance code quality.

  • Ability to collaborate with others across multiple teams.

  • The grit to get the job done despite unforeseen obstacles.

  • An aptitude to lead and work independently.

  • Flexibility to adjust to changing business priorities.

  • Curiosity and a drive to grow.

  • Willingness to travel up to 50%.

  • Active security clearance.

  • At senior levels: experience in building and maintaining high-performance, scalable systems.

How We Hire:

We look at the interview process not as a screening or test, but rather as an opportunity to simulate what it would look like working together. We build the interview process around you.

ASI works with export controlled technology and restricted U.S. Government data, including on contracts mandating U.S. immigration status and location restrictions for performing personnel. Employment offers are contingent on ability to timely obtain all required authorizations for contemplated job duties.

In case you’re interested in taking a shortcut through our application process - try a little puzzle on for size. Below you’ll find an array of bytes. Once decoded, it will reveal the hiring manager’s e-mail. Send an e-mail with the subject “Squawk!” and we’ll get in touch right away! Send in your code as well!

[33, 56, 46, 44, 62, 13, 44, 36, 63, 62, 61, 44, 46, 40, 96, 36, 35, 57, 40, 33, 33, 36, 42, 40, 35, 46, 40, 99, 46, 34, 32]

Each character in the hiring manager’s email was translated into the byte array above by first converting each character into its Unicode integer representation, and then XOR’ing each integer with a secret key.
In order to find the key - you’ll have to do some aviation research into squawk codes. Specifically - the key will be the squawk code used to signal a generic emergency, with any leading or trailing 0’s trimmed out. Happy decoding!

Skills Required

  • Proficiency in at least one modern programming language (foundation to learn Rust and Python)
  • Proficient in leveraging modern LLM tools to accelerate development and improve code quality
  • Active security clearance
  • Willingness to travel up to 50%
  • Ability to collaborate across multiple teams including end-users and deployment strategists
  • Aptitude to lead and work independently
  • Grit to complete work despite unforeseen obstacles
  • Flexibility to adjust to changing business priorities
  • Ability to timely obtain required U.S. authorizations and comply with location restrictions for export-controlled work
  • Curiosity and a drive to grow
  • Experience building and maintaining high-performance, scalable systems (required for senior-level candidates)
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The Company
HQ: Boston , Massachusetts
150 Employees
Year Founded: 2018

What We Do

ASI is a dual-use software company that deploys predictive AI to the world's most complex operating environments. Backed by leading investors–including Andreessen Horowitz, Renegade Partners, and Spark Capital–we actively manage over 40% of all US air traffic across both public and private sector air operations. Partnering with major airlines like United and Alaska, we optimize thousands of flights daily, delivering millions in fuel savings and reducing flight times for customers. Today, we're expanding our industry-proven capabilities into new domains, including global logistics, maritime, and energy. Come join our founding engineering team in Boston as we build the future of complex operations.

Why Work With Us

You will do everything from ideate and develop new products from the ground up (0 to 1) to refine and optimize existing solutions (1 to n). In a small-team, fast-paced environment, you'll set standards for excellence while collaborating across the business. Your work will drive real impact.

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