Software Engineer (Senior) - TS/SCI with Polygraph Required
Catalyst Operations & Analytics
Job Description
Job Description
Position Summary
Senior Software Engineers lead the design, development, and delivery of complex software systems in support of the customer's requirements. Senior Software Engineers take ownership of significant portions of the software development lifecycle — from requirements analysis and design through coding, integration, and testing — while operating within Agile development teams. Senior Software Engineers apply sound engineering judgment to resolve difficult technical problems, evaluate design trade-offs, and help ensure delivered systems meet performance, security, and reliability standards. Senior Software Engineers are expected to review the work of less experienced engineers and provide technical mentorship
Requirements
US Citizenships and TS/SCI with Polygraph (no exceptions)
Education/Experience Requirements:
- Bachelor's degree and 7-11 years of relevant professional software engineering experience (Master's degree and 5-9 years also acceptable); additional relevant experience may be considered in lieu of a degree
Required Skills:
- Strong proficiency in one or more modern programming languages (e.g., Java, Python, C/C++, JavaScript)
- Demonstrated experience across the full software development lifecycle (SDLC), including requirements analysis, design, coding, integration, testing, and deployment
- Experience working within Agile/Scrum development teams and ceremonies
- Experience with version control and configuration management tools
- Experience developing on Windows and/or Linux operating systems
- Experience with DevOps practices, CI/CD pipelines, and test automation
- Demonstrated ability to evaluate software architecture and technical trade-offs
- Strong critical thinking, technical writing, and oral communication skills, including the ability to present technical solutions to customers
- Senior positions review and guide the work of Junior and Mid-Level engineers
$170k - $210k
...- $210,000 Position Summary Senior Software Engineers lead the design, development, and... ...systems in support of the customer's requirements. Senior Software Engineers take... ...Requirements US Citizenships and TS/SCI with Polygraph (no exceptions) Education/Experience...Senior$175k - $215k
...00 Position Summary Senior Software Developers lead the design... ...of the customer's requirements. Senior Software Developers... ...Software Developers apply sound engineering judgment to resolve... ...Requirements US Citizenships and TS/SCI with Polygraph (no exceptions)...Senior- ...Summary Principal/Expert Software Engineers provide technical... ...support of the customer's requirements. Principal/Expert Software... ...Engineers are expected to mentor Senior, Mid-Level, and Junior engineers... ...US Citizenships and TS/SCI with Polygraph (no exceptions) Education...Suggested
- ...Job Description Position Summary Senior Systems Integrators lead the planning,... ...environments in support of the customer's requirements. Senior Systems Integrators perform... ...Requirements US Citizenships and TS/SCI with Polygraph (no exceptions) Education/Experience...SeniorContract work
- ...Position Summary Mid-Level Software Engineers support the design,... ...support of the customer's requirements, working both individually... ...Engineers are expected to work with growing independence while... ...US Citizenships and TS/SCI with Polygraph (no exceptions) Education...Suggested
$105k - $140k
...40,000 Position Summary Junior Software Engineers support the design, development, and... ...systems in support of the customer's requirements, working as members of an Agile... ...Requirements US Citizenships and TS/SCI with Polygraph (no exceptions) Education/Experience...Internship$43.27 - $108.17 per hour
...Description: This is a forensic software development and reverse engineering position combined into one!... ...majority of our open positions require an aptitude in both domains.... ...government security clearance at the TS//SCI level with Polygraph Must have a Bachelors degree...Hourly payContract workFor contractorsLocal areaRemote workRelocation packageFlexible hours$150k - $200k
...About Millennial Software: Millennial Software... ...: Top Secret SCI + CI Polygraph... ...is seeking a Mid-Senior Full Stack Software... ...the full stack, with a particular focus... ...best practices Requirements Required Qualifications... ...developers Active TS/SCI clearance...SeniorFull timeShift work$215k - $260k
...Principal/Expert Software Developers provide technical... ...of the customer's requirements, including... ...trade-offs, and set engineering direction across Agile... ...expected to mentor Senior, Mid-Level, and Associate... ...US Citizenships and TS/SCI with Polygraph (no exceptions)...- ...to complex problems as a Front End Software Developer at GDIT. Here, you’ll... ...cutting-edge solutions to the unique requirements of our clients. With a career in development, you’ll... ...output. Security Clearance Level: TS/SCI with Polygraph Location: McLean VA, on...Work experience placement
- ...while shaping what’s next for your engineering career. WHAT YOU'LL NEED... ...years of related experience Required Skills & Experience: Experience with Java and Python. Build and... ...Security Clearance Level: TS/SCI with Polygraph Location: McLean VA, on Customer...Work experience placement
$186.54k - $252.38k
...Possess: Top Secret SCI + Polygraph Clearance Level Must... ...Public Trust/Other Required: None Job Family: Software Engineering Job Qualifications:... ...Experience: Experience with Java and Python. Build... ...Security Clearance Level: TS/SCI with Polygraph...Full timeTemporary workPart timeWork experience placementImmediate startRemote workWorldwideFlexible hours- ...Description Job Description SOFTWARE REVERSE ENGINEER Vexterra Group is searching for a Senior Software Reverse Engineer... ..., working closely with teammates who value innovation... ...SECURITY CLEARANCE ~ Active TS SCI + CI Polygraph QUALIFICATIONS Two (...SeniorFor contractors
- ...cutting-edge solutions to the unique requirements of our clients. With a career in application... ...tomorrow is smarter. Our work depends on Software Developer joining our team. HOW... ...field Security Clearance Level: TS/SCI with Polygraph Location: Herndon, VA, on...
- ...Summary Mid-Level Software Developers support... ...support of the customer's requirements, working both... ...are expected to work with growing independence... ...US Citizenships and TS/SCI with Polygraph (no exceptions)... ...in Computer Science, Engineering, or a related field...
$110k - $145k
...Position Summary Junior Software Developers support... ...of the customer's requirements, working as members... ...features with existing systems. Junior... ...US Citizenships and TS/SCI with Polygraph (no exceptions)... ...in Computer Science, Engineering, or a related field...Internship- ...Description Position Summary Senior Network Engineers lead the design,... ...support of the customer's requirements. Senior Network Engineers... ...coordinate maintenance activities with minimal service... ...Requirements US Citizenships and TS/SCI with Polygraph (no exceptions)...Senior
- ...Description Job Description Senior Full-Stack Software Engineer Springfield, VA Active TS/SCI clearance and be willing and able to obtain a CI polygraph required. We have a great... ...excite you, we’d love to chat with you! @Orchard is retained by...SeniorFull timeFlexible hours
$124.09k - $166.75k
...critical systems. This position requires the employee to report full... ...and seasoned professional with extensive, hands‑on... ...unique blend of technical engineering prowess, security assessment... ...possess a current and active TS/SCI with Polygraph. Certifications: Must be DoW...Full timeContract workTemporary workFlexible hours$200k - $250k
...Salary: $200,000 - $250,000 Position Summary Senior IT Program Managers provide overall leadership and... ...inspire and direct large, dynamic program teams. Requirements US Citizenships and TS/SCI with Polygraph (no exceptions) Education/Experience...SeniorFor subcontractor- ...support of the customer's requirements, working as members of a program... ...Life Cycle (SDLC), assist with requirements triage and... ...coordinate with program managers, engineers, and other functional... ...Requirements US Citizenships and TS/SCI with Polygraph (no exceptions)...Work at office
- ...LLMs and other technologies) with external systems, including... ...in Computer Science, Engineering, or a related technical discipline... ...Security Clearance Level: TS/SCI with Polygraph #WeAreGDIT #JET... ...#VA_2026Alumni Work Requirements Years of Experience 15 +...Work experience placement
$195k - $235k
...Summary Principal/Lead Network Engineers provide technical leadership... ...Engineers are expected to mentor Senior, Mid-Level, and Associate network... ...directly to the customer. Requirements US Citizenships and TS/SCI with Polygraph (no exceptions) Education/Experience...$150k - $160k
...connect our employees with some of the best... ...looking for a Senior Multi-Cloud DevOps Engineer to work in... ...Clearance: TS/SCI with Poly Salary... ...TS/SCI CLEARANCE REQUIREMENT) Must have Azure... ...task management software such as Jira... ...clearance with a polygraph · HS diploma...SeniorLive in$164.9k - $223.1k
...Systems Engineer – Service Delivery for GDIT (McLean... ...through SSJ, SOW, requirements, etc. products. Foster... ...of complex hardware/software systems. Proven experience... ...reviews, working with 3rd‑party vendors, generating... ...Clearance Level: TS/SCI with Polygraph Location: McLean, VA...Work experience placement$190k - $230k
...are expected to operate with substantial latitude... ...other integrators and engineers, and provide highly innovative... ...of the program. Requirements US Citizenships and TS/SCI with Polygraph (no exceptions)... ...solutions to customers and senior stakeholders Expert/...- ...Description Job Description AI/ML Engineer McLean, VA Active TS/SCI with Poly Clearance required @Orchard is retained by a... ...TS/SCI level with required Polygraph. Responsibilities:... ...or related area of study. Senior Labor Category: Minimum 8 years...Full time
- ...to meet critical mission requirements in the areas of Data Analytics and Software Development, Engineering, Targeting and Analysis, Operations... ...and reliable partnerships with our customers and industry... ...an active/current TS/SCI with Polygraph clearance. Equal Opportunity...Full time
- ...Description We are seeking a senior level cloud engineer capable of working with a software development team to provide... ...knowledge on to others. REQUIRED SKILLS: Experience with... ...Security Clearance Level: TS/SCI with Polygraph Work Requirements Years...Work experience placement
- ...Job Description Job Description Senior Software Engineer TS/SCI FSP Department: Government Customer- Herndon Location: Herndon, VA ACTIVE TS/SCI CLEARANCE with FS poly REQUIRED TO BE CONSIDERED FOR THIS POSITION Senior Software Engineer: Analyzes...Senior
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Software Engineer (Senior) - TS/SCI with Polygraph Required. Be the first to apply!
- software engineer full time Vienna, VA
- consulting software engineer Vienna, VA
- real time software engineer Vienna, VA
- network software engineer Vienna, VA
- senior software engineer remote Vienna, VA
- entry level software engineer remote Vienna, VA
- software developer fintech Vienna, VA
- software developer positions Vienna, VA
- software engineer amazon Vienna, VA
- remote entry level software developer Vienna, VA


