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IT Cyber Penetration Testing Analyst

Sigma Science Inc., is looking for a IT Cyber Penetration Testing Analyst based out of Washington D.C. with an active Q clearance.  This position will conduct remote and onsite testing of Information Technology Systems (IT) to detect and report on weaknesses, vulnerabilities, and compliance issues. Candidate should have experience in Network architectures, operating systems, application software, and cyber security tools and techniques. Additionally, this position requires expertise in the use of penetration testing tools, techniques, and attack vectors to be used in a sanctioned attack or intrusion for the sole purpose of evaluating the security of an IT system and to discover weaknesses, vulnerabilities, or compliance issues that are unknown to the system owner. 

Sigma Science Inc. has over 20 years of experience providing nuclear safety, operations, maintenance, engineering, environmental management, project management and administrative support services for federal and commercial clients.  Sigma Science is building up its Cyber defense capabilities to offer its current and future clients an integrated set of innovative solutions supporting the cyber and physical operation of their nuclear, smart grid infrastructure and mission critical environments. 

General Description of Duties:

  • Perform security risk assessment, threat analysis and threat modeling
  • Plan /Design/Execute security related artifacts and activities
  • Write Security Test strategy, Test Cases, Remediation Plan, and Security Test Report
  • Conduct Dynamic Security Scans, Manual validations/Pen Testing, and other Security QA activates
  • Conduct Remediation Strategy Discussions and User Review Sessions
  • Lead/Participate projects/defects related meetings and triage activities
  • Lead and Execute efforts with Web Inspect, Burp Suite Pro, Wireshark and other security QA tools as appropriate
  • Lead/Participate in developing Security QA roadmap, adopt security best practices, and Implement new ideas and innovations according to the industry trends
  • Create and maintain False Positive Repository Database
  • Testing Web Application Security and understanding of vulnerabilities from front end, backend, database and Network/Infrastructure
  • Cross the line of the Web Application Security Testing and participate in Mobile, Network, Perimeter, WIFI and other security functions as needed
  • Lead/Perform Red Team and Blue Team exercises
  • Wear Black hat hackers hat as required and perform invasive security testing
  • Participate Pen Testing and Ethical hacking activities on identified tasks
  • Perform API (Web Services) security Testing (Restful, SOAP)
  • Adhere to the QA best practices and work for delivering Secured and Quality products                  
  • Good understanding of business process, systems knowledge
  • Good understanding of QA Methodology, Policy, Process, Tools
  • Excellent communication skills and the ability to interface with more senior co-workers and leadership with confidence and clarity
  • Support the Security QA manager in Security QA activities and be a Team Player


  • Active Q Clearance
  • 3 years of experience
  • Bachelor’s Degree in Computer Science or related field; Master’s Degree Preferred
  • Certified Information Systems Security Professional (CISSP) and/or Certified Information Systems Auditor (CISA) certification are highly desirable.


Successful applicants may be subject to random drug testing based on client requirements.

SSI is committed to a policy of equal employment opportunity. We recruit, employ, train, compensate, and promote without regard to race, ancestry, color, sex, religion, creed, age, national origin, citizenship status, disability, medical condition, military and veteran status, marital status, sexual orientation or perceived sexual orientation, gender, gender identity and gender expression, familial status, political affiliation, genetic information, or any other legally protected status or characteristics.

SSI is committed to the principles of equal employment opportunity and to compliance with US laws and regulations.

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