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# Principal Software Engineer

- **Company:** Leidos Holdings, Inc.
- **Location:** Herndon, VA, United States (Remote available)
- **Salary:** $139,244.0 - $185,000.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Big Data, C++ (Programming Language), Computer Programming, Data Structures, Linux, Distributed Systems, Fault Tolerance, Python (Programming Language), Build Management, Data Analytics, Data Management
- **Published:** July 5, 2026
- **Apply:** https://www.careerjet.com/jobad/us58a406808b7438314e9fea3e955e431f

## About the Role

* Expert-level programming skills in C/C++, Rust, Go, or Python, with strong fundamentals in algorithms, data structures, and systems design
 * Deep understanding of Linux systems, performance, and resource management
 * Proven experience building and operating fault-tolerant distributed systems at scale
 * Strong problem-solver who thrives in complex, ambiguous environments and takes a data-driven, scientific approach
 * Comfortable working across the stack-from low-level systems to distributed architecture and APIs
 * Highly self-driven and autonomous, with the ability to proactively identify and solve problems
 * Excellent written communication and collaboration skills in a remote, async environment
 * Thoughtful user of AI-assisted development tools to enhance productivity while maintaining high standards of quality.

Bonus Points

 * Experience in airline pricing, distribution, or ATPCO data
 * Background in building high-throughput, low-latency data platforms

## Description

Looking to redefine how the airline industry prices and sells products at a global scale? This is not just another engineering role-this is your opportunity to architect and build a next-generation pricing engine that will power airline retailing across the world.
At ATPCO, you'll join a newly formed Pricing Platform Team (est. 2024) with a bold mission: to create a highly scalable, cost-efficient, and intelligent pricing platform capable of managing 200M+ fares across 160+ countries. This platform will shape how airlines distribute and optimize their products in real time.
As a Principal Software Engineer, you won't just contribute-you'll lead from the front, solving some of the hardest technical challenges in distributed systems, performance engineering, and large-scale data processing.
Roles and Responsibilities :

 * Design and build a high-performance, fault-tolerant pricing engine from the ground up
 * Solve complex challenges in distributed systems, scalability, and reliability
 * Work across the stack-from low-level system interactions to distributed algorithms and APIs
 * Optimize for extreme performance using advanced techniques like:

 * Zero-copy data paths
 * Lock-free data structures
 * Sophisticated fault tolerance and replication strategies
 * Partner with engineers and stakeholders to shape the future of airline retailing technology
 * Spend the majority of your time hands-on, tackling the hardest technical problems


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