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Junior Linux Kernel Engineer Ubuntu Jobs in Hackettstown, NJ

CACI International, Inc.

Network Engineer

Florham Park, NJ · On-site

$86K - $181K/yr

Experience with Linux operating systems at all layers (boot, kernel space, user space) * Ethical hacking skills and experience with penetration testing and reverse engineering tools What You Can ...

PB consulting

Ab Initio Data Engineer

Millington, NJ · Hybrid

Strong experience with Unix/Linux shell scripting. * Solid understanding of data warehousing ... Mentor junior and mid-level Ab Initio developers. * Collaborate with data architects, DBAs, and ...

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$34.6K

$74.2K

$113.1K

How much do junior linux kernel engineer ubuntu jobs pay per year?

As of Aug 9, 2026, the average yearly pay for junior linux kernel engineer ubuntu in Hackettstown, NJ is $74,190.00, according to ZipRecruiter salary data. Most workers in this role earn between $50,100.00 and $82,700.00 per year, depending on experience, location, and employer.

What is a junior Linux kernel engineer Ubuntu?

A Junior Linux Kernel Engineer Ubuntu job involves working on the Linux kernel, specifically for Ubuntu and related Canonical projects. Responsibilities typically include debugging kernel issues, maintaining patches, optimizing performance, and contributing to upstream kernel development. Junior engineers collaborate with senior developers, test new kernel features, and ensure hardware compatibility. Strong knowledge of C programming, kernel internals, and debugging tools like GDB and perf is essential. This role provides a foundation for growth in open-source development and low-level system engineering.

What are some common challenges faced by junior Linux kernel engineers working with Ubuntu?

One common challenge for Junior Linux Kernel Engineers on Ubuntu is quickly understanding the complex and evolving codebase while adhering to Ubuntu's specific kernel customization and integration practices. New engineers often spend significant time learning to troubleshoot bugs, navigate documentation, and contribute effectively within established development workflows. Collaboration with senior engineers, participation in code reviews, and clear communication are integral to overcoming these hurdles and growing technically. Over time, junior engineers build deeper expertise and can take on larger projects and increased responsibilities.

What are the key skills and qualifications needed to thrive in the junior Linux kernel engineer Ubuntu position?

A Junior Linux Kernel Engineer Ubuntu should possess a solid understanding of C programming, Linux operating systems, and basic kernel architecture, often backed by a relevant computer science degree or equivalent experience. Familiarity with version control systems like Git, building and debugging tools, and certifications such as LFCS or CompTIA Linux+ are advantageous. Strong problem-solving abilities, eagerness to learn, and effective communication skills help junior engineers excel in collaborative environments. These capabilities are essential for contributing safely and efficiently to kernel development and troubleshooting in a fast-evolving ecosystem like Ubuntu.

What cities near Hackettstown, NJ are hiring for Junior Linux Kernel Engineer Ubuntu jobs? Cities near Hackettstown, NJ with the most Junior Linux Kernel Engineer Ubuntu job openings:
Junior Linux Kernel Engineer Ubuntu jobs near you

Senior Vulnerability Researcher

CACI International, Inc.

Florham Park, NJ • On-site

$113K - $237K/yr

Full-time

Medical, Retirement, PTO

Re-posted 25 days ago

Job description

Job Title: Senior Vulnerability Researcher
Job Category: Engineering
Time Type: Full time
Minimum Clearance Required to Start: Top Secret
Employee Type: Regular
Percentage of Travel Required: Up to 10%
Type of Travel: Continental US
* * *
The Opportunity:
We are seeking a Senior Vulnerability Researcher with deep expertise in telecommunications security, 3GPP protocols, and advanced reverse engineering. This role is ideal for a specialist who thrives on technical ambiguity and enjoys probing the 5G stack for critical flaws. You'll play a key role in evaluating the security and robustness of proprietary telecom systems-reverse-engineering "closed-box" binaries, developing stateful fuzzers, and uncovering vulnerabilities that contribute directly to national cybersecurity efforts.
Responsibilities:
  • Develop and deploy custom stateful fuzzers for 3GPP protocols (NGAP, HTTP/2, PFCP, GTP-U) to identify crashes and stability issues in the 5G Core.
  • Apply advanced binary analysis to reverse-engineer proprietary 5G baseband firmware and Network Function (NF) binaries where source code is unavailable.
  • Utilize concolic and symbolic execution (Angr, Manticore) to map complex state machines and uncover logic flaws in 5G session management and authentication flows.
  • Create reliable Proof-of-Concept (PoC) exploits for discovered vulnerabilities in critical components such as AMF, SMF, or UPF.
  • Investigate edge-case behaviors and low-level protocol signaling to reveal attack surfaces in proprietary telecom and embedded systems.
  • Develop custom tools and scripts in Python3 to automate protocol decoding, firmware unpacking, and analysis workflows.
  • Document findings clearly and translate technical protocol complexity into actionable reports for security and engineering teams

Qualifications:
Required:
  • An active Top Secret clearance.
  • 7+ years of professional experience in vulnerability research, protocol analysis, or reverse engineering.
  • Mastery of C/C++ and high proficiency in Python3 for automation and tool development.
  • Deep understanding of 5G/4G architecture and 3GPP security standards.
  • Proven track record of reconstructing proprietary binary protocols and analyzing "closed-box" telecom equipment.
  • Hands-on experience with disassembly and decompilation tools with one or more of the following: IDA Pro, Ghidra, Binary Ninja, and hardware-assisted debugging.
  • Detailed understanding of networking and telecom protocol stacks, including signaling, control plane, and data plane components.
  • Experience in exploit development and vulnerability discovery in embedded or telecom environments.

Desired:
  • An active SCI clearance is highly desired.
  • Familiarity with radio access network (RAN) components and baseband security.
  • Experience with Linux kernel internals or RTOS environments used in telecom hardware.
  • Ability to build scalable fuzzing infrastructure and analysis tools in a team setting.
  • Background in hardware-level analysis, including firmware extraction and inspecting hardware state via JTAG or UART.

What You Can Expect:
A culture of integrity.
At CACI, we place character and innovation at the center of everything we do. As a valued team member, you'll be part of a high-performing group dedicated to our customer's missions and driven by a higher purpose - to ensure the safety of our nation.
An environment of trust.
CACI values the unique contributions that every employee brings to our company and our customers - every day. You'll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.
A focus on continuous growth.
Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground - in your career and in our legacy.
Pay Range:
There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.
The proposed salary range for this position is:
$113,200 - $237,800
CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.

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