CSS Jobs in Washington

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Sr. Software Engineer TS/SCI Polygraph

Leidos

•

Franconia, Virginia, USA

Full-time

Description Leidos has an exciting opportunity for a Sr. Software Engineer! *Must have an active TS/SCI Polygraph up front. No exceptions.* You will perform software development lifecycle (SDLC) activities as both an individual and a member of our top-notch agile development team building a large complex enterprise system. Development includes the full range of turning Agile user stories into implementable concepts, through development, unit testing, integration and test, and deployment of the
Posted 14 days ago | Updated 7 hours ago

Principal Software Engineer 25k Sign on Bonus

Leidos

•

Columbia, Maryland, USA

Full-time

Description Leidos has a new and exciting opportunity for a Principal Software Engineer in our National Security Sector's (NSS) Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and
Posted 14 days ago | Updated 7 hours ago

ServiceNow Software Developer

SAIC

•

Maryland, USA

Full-time

Job ID: 2504911 Location: ANNAPOLIS JUNCTION, MD, US Date Posted: 2025-04-24 Category: Software Subcategory: SW Engineer Schedule: Full-time Shift: Day Job Travel: No Minimum Clearance Required: TS/SCI with Poly Clearance Level Must Be Able to Obtain: None Potential for Remote Work: Yes Description SAIC has an immediate and funded opening on an exciting program in Annapolis Junction for a junior/mid-level Software Engineer! In this role you will develop, maintain, and enhance complex
Posted 60+ days ago | Updated 11 hours ago

Data Engineer Associate, TS/SCI with Polygraph

General Dynamics

•

Chantilly, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Data Science Job Qualifications: Skills: Analytics, Data Analysis, Process Improvements Certifications: None Experience: 1 + years of related experience ship Required: Yes Job Description: GDIT is looking for an Associate Data Engineer to support a complex scalable data lake project
Posted 1 day ago | Updated 1 hour ago

Full Stack Java Developer, TS/SCI with Polygraph

General Dynamics

•

Herndon, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Software Development Job Qualifications: Skills: Gradle, Maven, Node.js, Single Page Application (SPA), Spring Boot Certifications: None Experience: 10 + years of related experience ship Required: Yes Job Description: Deliver simple solutions to complex problems as a Full Stack Java
Posted 5 days ago | Updated 1 hour ago

SharePoint Developer

Summit Technologies

•

Washington, District of Columbia, USA

Contract

Summit Technologies, Inc. is looking for a SharePoint Developer to join our client s team in Washington, DC to develop and support out-of-the-box and custom SharePoint solutions using custom scripts, web parts and features pertaining to agency objectives and goals, public programs, education, research, and other initiatives. This is a hybrid role based in Washington, D.C. Candidates must be eligible for a Public Trust clearance. Responsibilities: Offer strategic guidance to the client to develop
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Posted 60+ days ago | Updated 19 days ago

Lead Salesforce Developer

Data Intelligence LLC.

•

Washington, District of Columbia, USA

Full-time

Data Intelligence LLC (DI) is seeking a highly skilled and experienced Lead Salesforce Developer to join our dynamic team on-site in Washington, D.C. As a Salesforce Lead, you will play a critical role in designing, developing, and deploying innovative solutions on the Salesforce platform. You will collaborate closely with the Product Owner, IT Solution Manager, and IT Solution Architect to ensure the successful delivery of scalable and secure Salesforce applications that meet business needs. **
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Posted 51 days ago | Updated 17 days ago

Lead Software Engineer, Full Stack (Bank Tech)

Capital One

•

McLean, Virginia, USA

Full-time

Lead Software Engineer, Full Stack (Bank Tech) Job Description Do you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive, and iterative delivery environment? At Capital One, you'll be part of a big group of makers, breakers, doers and disruptors, who solve real problems and meet real customer needs. We are seeking Full Stack Software Engineers who are passionate about marrying data with emerging techno
Posted 60+ days ago | Updated 1 hour ago

ServiceNow Developer/Maintainer - CLEARED

The Squires Group, Inc

•

Springfield, Virginia, USA

Full-time

Overview The Squires Group is seeking a ServiceNow Developer/Maintainer for a direct hire position with our client, supporting a National Security Federal Program. This onsite role is available in either Springfield, VA, or Chantilly, VA-whichever location works best for you. Responsibilities Advise the client on ServiceNow best practices, workflow automation, and user experience enhancements. Oversee system health and ensure compliance with ServiceNow standards. Develop and configure Client S
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Posted 60+ days ago | Updated 1 day ago

Senior IBM Case Management Developer

Booz Allen Hamilton

•

McLean, Virginia, USA

Full-time

Job Number: R0217421 IBM Case Management Developer, Senior The Opportunity: As a Cloud Pak for Business Automation ( CP4BA ) developer, the ideal candidate will be responsible for designing, developing, and implementing scalable and efficient business automation solutions with IBM CP4BA. The role requires deep technical knowledge, strong problem-solving skills, and the ability to drive digital transformation initiatives. Due to the nature of work performed within this facility, U.S. citizen ship
Posted 60+ days ago | Updated 2 hours ago

Oracle APEX Developer

Navigant Consulting

•

Washington, District of Columbia, USA

Full-time

Job Family: Investigation Consulting Travel Required: None Clearance Required: Active Top Secret (TS) What You Will Do: Guidehouse is recruiting Oracle APEX developers to be a part of our Defense & Security Department of Justice support practice. Every organization today faces complexity across multiple levels on a frequent basis. Join our team supporting the Department of Justice and guide our customers through today's complex challenges. The Oracle APEX developer will be responsible for t
Posted 60+ days ago | Updated 2 hours ago

Sharepoint Developer

SAIC

•

Washington, District of Columbia, USA

Full-time

Job ID: 2504209 Location: WASHINGTON, DC, US Date Posted: 2025-06-04 Category: Software Subcategory: SW Engineer Schedule: Full-time Shift: Day Job Travel: No Minimum Clearance Required: None Clearance Level Must Be Able to Obtain: Public Trust Potential for Remote Work: Yes Description SAIC is looking for a Sharepoint Developer to develop and support out-of-the-box and custom SharePoint solutions using custom scripts, web parts and features pertaining to agency objectives and goals,
Posted 60+ days ago | Updated 11 hours ago

Mid/Senior Cyber Systems & Acquisition Analyst

SimVentions, Inc - Glassdoor 4.6

•

Washington, District of Columbia, USA

Full-time

Overview: SimVentions is seeking a Cyber Systems Analyst/Engineer to support the SPEIR and LEED programs within PEO IWS 2.0 Above Water Sensors. This role provides direct support to APMs, Lead System Engineers, and Task Leads. A hybrid work environment is available, but on-site work in the DC area is required 2-3 times per week, with occasional travel (up to 10%). Travel: Travel to Washington D.C. area 2-3 times per week and additional travel up to 10% of the time (1-2 times/month). Clearance:
Posted 60+ days ago | Updated 1 day ago

Software/Web Developer (Cleared) (Sr)- G-SWD

Kentro

•

Springfield, Virginia, USA

Full-time

Description Thank you for considering IT Concepts dba Kentro, where innovation drives opportunity and collaboration leads to success. Our dynamic community of experts is fully committed to advancing our customers' missions, fostering professional growth, and making a positive impact on our communities. Our transition to Kentro in 2025 reflects a rich legacy built upon the foundation of IT Concepts. Rather than leaving ITC behind, we confidently embrace a future centered around the Core of More
Posted 60+ days ago | Updated 10 hours ago

Lead React Developer

Primetime Technologies Inc

•

Remote

Contract

REQUIRED 7+ years previous experience working as a React.js developer. 7+ years experience in React.js, HTML, CSS3. Vast experience in JavaScript and React concepts, advanced front-end coding skills, and an expert level understanding of progressive web applications. Extensive experience on front-end development and demonstrated ability to work in a fast-paced environment. Passion for supporting, collaborating, and coaching engineering teams. Comfortable driving code reviews and operating as an
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Posted 1 day ago

Mid/Senior Cyber Systems & Acquisition Analyst

SimVentions, Inc - Glassdoor 4.6

•

Washington, District of Columbia, USA

Full-time

Overview: SimVentions is seeking a Cyber Systems Analyst/Engineer to support the SPEIR and LEED programs within PEO IWS 2.0 Above Water Sensors. This role provides direct support to APMs, Lead System Engineers, and Task Leads. A hybrid work environment is available, but on-site work in the DC area is required 2-3 times per week, with occasional travel (up to 10%). Travel: Travel to Washington D.C. area 2-3 times per week and additional travel up to 10% of the time (1-2 times/month). Clearance:
Posted 60+ days ago | Updated 1 day ago

Data Engineer - TS/SCI w/Polygraph

General Dynamics

•

McLean, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Data Science Job Qualifications: Skills: Communication, ETL, Leadership, Python (Programming Language), Structured Query Language (SQL) Certifications: None Experience: 10 + years of related experience ship Required: Yes Job Description: The Data Engineer Team Lead will provide tech
Posted 29 days ago | Updated 1 hour ago

Senior Salesforce Developer - Remote

ICF

•

Remote or Reston, Virginia, USA

Full-time

ICF is a mission-driven company filled with people who care deeply about improving the lives of others and making the world a better place. Our core values include Embracing Difference; we seek candidates who are passionate about building a culture that encourages, embraces, and hires dimensions of difference. Our Health Engineering Systems (HES) team works side by side with customers to articulate a vision for success, and then make it happen. We know success doesn't happen by accident. It take
Posted 7 days ago | Updated 1 hour ago

Full Stack Developer, Team Lead

Leidos

•

Ashburn, Virginia, USA

Full-time

The National Security Sector within Leidos is seeking a Full Stack Software Developer Team Lead, with strong systems, software, cloud, and Agile experience to support a complex program to provide Agile development. In this role the candidate will support the Passenger Systems Program Directorate (PSPD) within Customs and Border Protection (CBP). In this hands-on position, you will work collaboratively to architect, design, build, deliver, and enhance highly available, scalable, real-time systems
Posted 27 days ago | Updated 2 hours ago

Data Engineer - TS/SCI w/Polygraph

General Dynamics Information Technology

•

McLean, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Data Science Job Qualifications: Skills: Communication, ETL, Leadership, Python (Programming Language), Structured Query Language (SQL) Certifications: None Experience: 10 + years of related experience ship Required: Yes Job Description: The Data Engineer Team Lead will provide tech
Posted 32 days ago | Updated 5 hours ago