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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Mobile Application Developer - **Company:** BigBear.ai, Inc. - **Location:** McLean, VA, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Android Software Development, Android NDK, Apple IOS, Unix, C++ (Programming Language), Mobile Application Development, Software Documentation, Computer Networks, Custom Software, Data Structures, Software Debugging, Linux, File Systems, GNU Debuggers, GNU Linker, Internet Protocol, Mobile Application Software, Python (Programming Language), Network Protocols, NT File System (NTFS), Reverse Engineering, Reduced Instruction Set Computing, Server Administration, Simple Data Format, Mobile Security, Socket Programming, Software Engineering, Transmission Control Protocol (TCP), WinDBg, Scripting, Swift (Programming Language), Gitlab, Git, Build Management, Selinux, IDA Pro, Objective C++, Software Version Control, Vulnerability Analysis - **Published:** September 6, 2026 - **Apply:** https://www.careerbuilder.com/job-details/mobile-application-developer-ios-developer-mclean-va--3e91aa1b-b39b-4bb6-a9c1-46f4bfdb78cb ## About the Role * Must have an active U.S. Government Top Secret (TS) clearance, Full Scope Polygraph (FSP) or the ability to obtain one * Must have at least 10+ years of experience * Experience developing, testing, and debugging in Python and C * Experience building UNIX applications using make files (or similar build environments) on mission-relevant platforms * Experience developing CNO tools and techniques * Strong socket programming and packet-level understanding of IP, TCP, and application-layer protocols * Proficiency tracing execution with debuggers/tools such as WinDbg, gdb, IDA Pro * Experience reverse engineering native binaries * Experience developing proof-of-concept exploit software * Knowledge of OS internals, including topics such as: * * runtime linker/loader concepts * object file formats (e.g., ELF) * file system internals (e.g., NTFS, ext2, btrfs) * access control mechanisms (MAC/DAC) * process/thread APIs, data structures * Understanding of modern mitigations (ASLR, DEP, NX), approaches to bypass them, and methods to detect bypass attempts * Experience with version control (e.g., git, GitLab) What we'd like you to have * Native-level mobile development experience (Android native/NDK or similar) * Vulnerability analysis experience * Assembly familiarity, preferably ARM * Understanding of mobile security protections (e.g., SELinux, application sandboxing) * Experience with Objective-C, Swift, C++ * Ability to work independently and collaboratively in a fast-paced environment with changing priorities, ARM (Advanced RISC Machine), Android, Application Programming Interface (API), Artificial Intelligence (AI), Commercial Off-the-Shelf (COTS), Data Structures, Debugging Skills, Debugging Tools, Documentation, Full Scope Polygraph, GDB (Gnu Debugger), Government, Government Off-the Shelf (GOTS), IDA Pro, IP (Internet Protocol), Identify Issues, Mentoring, Mobile Applications Development, Needs Assessment, Network Protocols, Predictive Modeling, Proof of Concept, Python Programming/Scripting Language, Security Analysis, Security-Enhanced Linux (SELinux), Sockets, Software Administration, Software Design, Software Development, Supply Chain Management, TCP (Transmission Control Protocol), Technical Delivery, Test Plan/Schedule, Testing, Top Secret Clearance, User Documentation, WinDbg, iOS ## Description BigBear.ai is seeking an Android Developer to join a mission-focused cyber team supporting critical national security objectives. In this role, you'll build and sustain custom Android capabilities used by operational teams in fast-moving, real-world environments. You'll work side-by-side with end users to understand evolving needs, translate them into technical solutions, and deliver reliable tools that perform under pressure. This is a hands-on engineering position with end-to-end ownership from initial design through development, testing, debugging, documentation, and ongoing enhancements where speed, quality, and mission impact matter. What you will do * Design and develop custom software tools and techniques for the Android platform * Own end-to-end development: requirements, design, implementation, testing, and sustainment * Diagnose and debug issues using COTS/GOTS tools and internal frameworks * Apply a strong understanding of networking concepts and protocols to tool development * Produce documentation needed to operate, maintain, and support delivered software * Mentor and guide junior developers to accomplish mission objectives * Respond to and solve time-sensitive, real-world cyber problems ## Related Videos - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [WeAreDevelopers LIVE - Node and Package Security](https://www.wearedevelopers.com/videos/2138-wearedevelopers-live-node-and-package-security) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [Scalable architecture for mobile apps](https://www.wearedevelopers.com/videos/275-scalable-architecture-for-mobile-apps) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) - [The Developer Workstation Blind Spot: Why Your Security Stack Can't See What Matters Most](https://www.wearedevelopers.com/videos/100254-the-developer-workstation-blind-spot-why-your-security-stack-can-t-see-what-matters-most) ## Related Articles - [A Guide to Choosing the Right Tools for App Developers](https://www.wearedevelopers.com/magazine/391-a-guide-to-choosing-the-right-tools-for-app-developers) - [The 8 Best Code Testing Tools](https://www.wearedevelopers.com/magazine/402-the-8-best-code-testing-tools) - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [7 Important Tips That Every Software Developer Should Know](https://www.wearedevelopers.com/magazine/101-7-important-tips-that-every-software-developer-should-know) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Cross Platform Mobile Development Frameworks to Use in 2025](https://www.wearedevelopers.com/magazine/404-cross-platform-mobile-development-frameworks-to-use-in-2025)