Skip to content
< Back to ManTech Careers

General information

Requisition #
R58872
Locations
USA-MD-Linthicum Heights
Posting Date
02/28/2025
Security Clearance Required
TS/SCI w/ Poly
Remote Type
Onsite
Time Type
Full time

Description & Requirements

Unlock the secrets of intelligence with ManTech! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we’ve been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now—unleash your potential with ManTech!

ManTech seeks a motivated, career and customer-oriented Senior Cryptographic Software Engineer to join our team in Linthicum Heights, MD.  This is a full time position with 5 days being onsite. This role is vital for ensuring the confidentiality, integrity, and availability of systems within secure environments.

Responsibilities include but are not limited to:

  • Implement and integrate cryptographic principles, including symmetric and asymmetric encryption algorithms (e.g., AES, RSA, ECC), into software applications by developing and optimizing low-level system programming and cryptographic algorithm implementations using C and C++.

  • Utilize cryptographic libraries to ensure proper parameterization and secure integration of encryption modes.

  • Manage cryptographic concepts such as block ciphers, key management, encryptors, secure communications, and cryptographic product evaluation.

  • Evaluate cryptographic implementations for correctness, security, performance, key management, hashing, and digital signatures.

  • Automate processes and create scripts using Python to enhance system functionality and efficiency. Design, develop, test, and maintain software applications using Java.

  • Configure, script, and ensure secure development practices within Linux-based operating systems.

  • Design and assess secure network communications by applying expertise in network protocols and security concepts, including TCP/IP, SSL/TLS, and RESTCONF/YANG.

  • Apply secure coding practices, mitigate vulnerabilities, and oversee secure software lifecycle management.

Minimum Qualifications:

  • Eight years of Software development/evaluation experience

  • In lieu of eight years of software development/evaluation experience candidates will have a Bachelor’s degree in Computer Science, Engineering or Computer Engineering plus five years of Software development/evaluation experience.

  • Candidate may also have a Master’s degree in computer science, Engineering or Computer Engineering plus three years of SW development/evaluation experience

  • Experience and understanding of FIPS 140-3, Common Criteria, and other cryptographic certification processes.

Preferred Qualifications:

  • Certified Information Systems Security Professional (CISSP), Certified Ethical Hacker (CEH), or equivalent.

  • Certifications related to cryptographic technologies or Linux systems, such as Linux+ or RHCE.

Clearance Requirements:

  • Must have a current/active TS/SCI w/ Polygraph

Physical Requirements:

  • Must be able to remain in a stationary position for extended periods of time. Needs to occasionally move about inside the office to access file cabinets, office machinery, etc. Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine and computer printer


The projected compensation range for this position is $175,800.00-$312,200.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories.  In addition, ManTech invests in it’s employees beyond just compensation.  ManTech’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, Short Term and Long Term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections.

ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

If you are a qualified individual with a disability and require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please email us at careers@mantech.com and provide your name and contact information.