- Lockheed Martin (Littleton, CO)
- … design practices * Experience with computationally complex problems * Experience with Microsoft software products * Active Top Secret Clearance required for ... Processing team is seeking a highly skilled and motivated Software Engineer , Stf to join our development...must be a US Citizen for consideration\. **Clearance Level:** TS / SCI **Other Important Information You… more
- Lockheed Martin (Littleton, CO)
- … software products \(user authentication, data encryption\) and secure development handling classified information \( Secret / TS / SCI \) * Active TS / ... information \. What You Will Be Doing As a Software Engineer you will own the full...Secret clearance before start and willingness to obtain TS / SCI clearance * Familiarity with the full… more
- CACI International (Denver, CO)
- Software Engineer TS / SCI ...are critical to our success. + Culture of sharing information amongst teammates and management team. + Be dedicated to ... Time Type: Full time Minimum Clearance Required to Start: TS / SCI with Polygraph Employee Type: Regular Percentage...Opportunity:** Are you ready to apply your expertise in software development to help shape the future of mission-critical… more
- Lockheed Martin (Denver, CO)
- …**Eligibility** MUST BE AU\.S\. CITIZEN \- The selected candidate must possess an active Top Secret clearance with SCI eligibility to start\. \#LI\-CS1 ... **Description:** You will be an Embedded Cyber Software Engineer for a research and...must be a US Citizen for consideration\. **Clearance Level:** TS / SCI **Other Important Information You… more
- Lockheed Martin (Littleton, CO)
- …security and prosperity\. **THE WORK** Lockheed Martin is seeking a talented ** Software Engineer with a TS / SCI clearance and Sec\+ \(8570 cert\)** to ... Ground Element Integration team that integrates, tests, and deploys software and hardware products as an integral component of...must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/Poly **Other Important Information … more
- CACI International (Denver, CO)
- …delivery and sign-off + Knowledge of Microsoft software applications and other software applications as required **A TS / SCI clearance is required to ... Software Engineer Job Category: Engineering Time...Time Type: Full time Minimum Clearance Required to Start: TS / SCI Employee Type: Regular Percentage of Travel… more
- Lockheed Martin (Littleton, CO)
- …security clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI **Other Important Information You Should Know** **Expression of ... Software Product Line \(SSPL\) is seeking a Software Engineer Staff to join the team\....candidate's final work location\. Please note that the salary information is a general guideline only\. Lockheed Martin considers… more
- KBR (Denver, CO)
- Title: Ground Systems Software Engineer Belong. Connect. Grow. with KBR! KBR's National Security Solutions team provides high-end engineering and advanced ... regarding Segment architecture, specification, and verification and validation. Required: + Active/Current TS / SCI with Poly. + BS Degree required. + 9+ years… more
- CACI International (Denver, CO)
- Front End Software Engineer (Mid-Level) Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS / SCI with Polygraph ... End: 1/1/2026 We are seeking a dedicated Front End Software Engineer (Mid-Level) to support our Makalu...and upbeat team atmosphere. **Qualifications:** _Required:_ + An active TS / SCI clearance with Polygraph. + Bachelor's degree… more
- CACI International (Denver, CO)
- Software Engineer Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS / SCI Employee Type: Regular Percentage of Travel ... Posting End: 1/1/2026 **The Opportunity:** CACI is seeking a Software Engineer to join a highly energetic...the impact of your work. **Qualifications:** **Required:** + Active TS / SCI with the ability to obtain a… more
- CACI International (Denver, CO)
- Software Engineer Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: None Employee Type: Regular Percentage of Travel Required: ... + The ability to obtain and maintain and US Government Clearance at the TS / SCI level. + Previous experience with wireless protocols (eg, 3GPP cellular protocols,… more
- CACI International (Denver, CO)
- Software Engineer Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS / SCI with Polygraph Employee Type: Regular ... **Qualifications:** _Required:_ * Java development using Spring * Active TS / SCI with Poly * 5 years of... with Poly * 5 years of experience in software engineering for information technology * Bachelor's… more
- Lockheed Martin (Littleton, CO)
- …must be eligible to obtain, and maintain, Top Secret with adjudicated SCI Eligibility \(i\.e\. TS / SCI \) for long term employment on this program ... **About the Role** : We are seeking a proactive Software Engineer who will drive architectural evolution...must be a US Citizen for consideration\. **Clearance Level:** TS / SCI **Other Important Information You… more
- CACI International (Denver, CO)
- Cleared Software Engineer Intern - Summer 2026 Job Category: Intern/Co-op Time Type: Part time Minimum Clearance Required to Start: TS / SCI with Polygraph ... End: 1/31/2026 **The Opportunity:** CACI is seeking a skilled Software Developer for our Summer 2026 Makalu internship program....+ Must be able to obtain and maintain applicable TS / SCI with Poly. + Must currently be… more
- Oracle (Denver, CO)
- …thrives, providing the connective tissues and purpose-built solutions. We are seeking a ** Software Development Engineer (SDE)** to join ASC team within the ... help define and enforce standards and best practices for software development within OCI. Your experience integrating complex, large-scale...requires a US Citizens while possessing and maintaining a TS / SCI eligibility with poly required + BS… more
- Sierra Nevada Company, LLC (Lone Tree, CO)
- …making an impact on a software engineering team + Active Top Secret US Security Clearance w/ SCI eligibility is required **Qualifications We Prefer:** + ... and more (https://www.sncorp.com/careers/total-rewards/) . **IMPORTANT NOTICE:** This position requires current/active Top Secret with SCI eligibility US… more
- Lockheed Martin (Littleton, CO)
- …security clearance, you must be a US Citizen for consideration\. **Clearance Level:** Top Secret **Other Important Information You Should Know** **Expression ... methodologies and/or understanding of Agile development concepts Ability to obtain TS / SCI Clearance Work shift work \#LMSpaceSoftwareEng **Security Clearance… more
- Lockheed Martin (Denver, CO)
- …security clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/Poly **Other Important Information You Should Know** ... Linux, Unix, Mac, Windows, Android, iOS\. * Hands\-on experience developing software using Configuration Management Tools \(e\.g\., Git, SVN, TFS\)\. * Experience… more
- DCCA (Littleton, CO)
- …of data exploitation applications for commercial, military and intelligence users. Software Engineer responsibilities will include: . Designing, developing, ... Engineers - All Levels Candidate must have an active TS / SCI to be considered For over 40...or bachelors with 14+ years experience or equivalent . Engineer Consultant (CT11): Senior consultant to top … more
- Lockheed Martin (Littleton, CO)
- …is required for consideration\. * Top Secret security clearance with adjudicated SCI \(i\.e\. TS / SCI \) is required prior to start\. * Willing to ... the selected employee to be aU\.S\. Citizen\. * Active Top Secret clearance with SCI ...must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/Poly **Other Important Information … more