Software Engineers | All Levels
Antithesis Operations LLC
Engineers at Antithesis work across a wide range of domains, often developing their own tools along the way. They dig deep to understand how something really works -- but stay broad to ship features across the whole stack. The ideal Antithesis engineer is a generalist who loves to learn new things and will fearlessly hack on whatever is needed. The core requirements : you're smart, get things done, and a joy to work with. We're looking for Senior, Staff, and Principal Engineers to build the future of autonomous testing. No matter your particular field of experience, if you've been ambitiously building complex software and think you could be a fit; drop us a note. The Tech Some of the tech and languages we use: Nix. Lots of Nix. Nix for builds, Nix for infrastructure. Nix where you did not expect! Rust for systems programming... and C/C++ where needed. Typescript (and JS) on the front end. All the other languages also: see our list of SDKs. The Projects We're looking for top-flight engineers to help us build: A functional, reactive notebook A streaming, analytic database (Semi-) formally proven infrastructure A custom, high-performance hypervisor ...and other projects The Culture Our team is comprised of people with a variety of backgrounds: standard engineering degrees to philosophy degrees; big-tech background to scrappy startups. But we have at least one common skill:everyone on the team, including managers, is heldto the same high standard of engineering competency. In addition,we value in-person work for its value in building trust and sharing knowledge and mentoring each other. Note: This is an 5 days a week in-office job in Vienna, VA #J-18808-Ljbffr
- ...Mid-Level Fullstack Software Engineer Software Guidance & Assistance, Inc., (SGA), is searching for a Mid-Level Fullstack Software Engineer for a contract assignment with one of our premier Regulatory clients in Tysons, VA; Rockville, MD; Woodbridge, NJ; or Jersey City...SuggestedContract work
- ...Level Software Engineer LOCATION Tysons, VA 22182 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) DEGREE (Level Desired) Bachelor's Degree DEGREE (Focus) Computer Science, Software Engineering, Information Technology, Computer Engineering...SuggestedTemporary workFor contractorsImmediate startFlexible hours
$163.79k - $192.7k
...Requisition ID: 2451 Standard Title: Principal Software Engineer Required Security Clearance: Top Secret/SCI with CI Polygraph... ...Summary Base-2 Solutions is seeking a Software Engineer Level 5 to develop, maintain, and enhance complex and diverse software...SuggestedHourly payContract workTemporary workImmediate startFlexible hoursShift work$750 per month
...Interclypse is seeking Cloud Software Engineers. The Interclypse difference is our emphasis on employee growth and development through continuous... .../resolution Experience developing software with high level languages such as Java, C, C++ Shall have demonstrated...Suggested16 hoursTemporary workWork experience placement$108.8k - $171k
...generations. Northrop Grumman’s Space Sector invites you to bring your pioneering spirit to our collaborative teams. As a Software Engineer – Level 3 or 4 supporting our Software and Electronics/Payloads Department which has ~200 Software Engineers, DevOps Engineers, Systems...SuggestedRemote workRelocation package$95k - $120k
...novel transportation research problems. Learn about STOL here: To promote these efforts, Leidos is looking for a onsite mid‑level Software Engineer to join our team! CANDIDATE MUST Work onsite full time in McLean, VA and have the Ability to obtain and maintain a Public...Full timeLocal areaImmediate start- ...Java Fullstack Developer (Entry Level) – Teksyntax Inc., Reston, VA. Job description TekSyntax Inc., an IT staffing company based in... ...efficient code Troubleshoot, debug, and upgrade existing systems Test software to ensure responsiveness and efficiency Deploy programs and...H1bRelocation package
$90k - $180k
...problems. All Riverside Research opportunities require U.S. Citizenship. Position Overview As a Mid-Level Machine Learning/AI Software Engineer, you will be responsible for developing, implementing, and applying machine learning/AI algorithms and solutions...Work at officeLocal area- ...A technology advisory company in Reston is seeking an Entry-Level Software Engineer to join their innovative team. You will help design and develop full-stack cloud and decentralized solutions while working alongside talented engineers. The ideal candidate should have...
- ...builds, Nix for infrastructure. C/C++ and Rust for kernel and systems programming. Typescript (and JS) on the front end & Node.js engine on the back, too. All the other languages also: see our list of SDKs. The Team Our team is comprised of people with a variety of backgrounds...
$87.1k - $157.45k
...Analysis Solutions Business Area at Leidos is seeking Software Developers at multiple experience levels to support a government customer in Reston, VA.... ...Qualifications by level Mid-Level Software Development Engineer Bachelor’s degree in Computer Science, Information Systems...For contractorsImmediate start- ...Description Software Engineer (Mid-Level) Joint Base Anacostia, Arlington, VA, or Reston, VA Active TS/SCI with Poly Clearance required @Orchard is retained by a top geospatial technology company supporting important operations missions to U.S. Government...
- ...Software Developer (Mid-Level) ID 2026-3465 Job Locations US Category Information Technology Type Regular Full-Time Overview DecisionPoint Corporation is seeking a Mid-Level Software Developer to support our U.S. Transportation...Full timeFor contractorsLocal area
- ...Poly investigation is required Apogee's ideal Software Developer will support the data engineering pipeline development for data science applications.... ...McLean, Chantilly, and Reston/Herndon and at multiple levels What You'll Love About Apogee ~ Challenging...Temporary workFlexible hours
- ...analytic access. • Collaborate with enterprise working groups to advance the state of data standards. • Collaborate with the engineering team, data stewards, and mission partners to aid in getting actionable value out of the data holdings architects complex, repeatable...
- ...About the job Forward Deployed Software Engineer (FDSE) - Mid Level We are seeking a Mid-Level Forward Deployed Software Engineer to support the development and delivery of mission-critical data and analytics capabilities within a fast-paced defense environment...
$43.27 - $96.15 per hour
...Embedded Reverse Engineer: All Levels - FUTURE NEED Closes 31-Mar-2026 (EST) Embedded Engineering 43.27-96.15 per hour Hourly Full Time Subsidized... ...The candidate will be primarily focused on conducting software analysis of embedded products. The focus will be on reverse...Hourly payFull timeContract workFor contractorsLocal areaRemote workRelocation packageFlexible hours- ...Celestar Corporation is seeking a Mid-level Data Engineer (OBI Advanced Analytic Method Augmentation) to support The Defense Intelligence Agency ( DIA) under the Object Based Intelligence and Quality Assurance (OBIQUA) task order. The primary place of performance...Temporary workLocal areaImmediate startFlexible hours
- ...Mid-Level Java Engineer (ONSITE INTERVIEWS) Sterling, VA LOOKING FOR SEASONED BACK-END JAVA DEVELOPER FACE TO FACE INTERVIEW ONLY LOCAL TO VA... Desired Skills ~ Bachelor's degree in Computer Science or a related field ~8+ years of work experience...Work experience placementLocal area
- ...United Cerebral Palsy of Georgia is seeking a Level III COBOL Developer to manage and implement software programs effectively in a team environment. The ideal candidate should have a minimum of 8 years of experience with Mainframe COBOL, JCL, and DB2. Responsibilities...
$120k - $170k
...Mid-Level Cloud and Microservices Engineer Base pay range $120,000/yr - $170,000/yr At Credence, we support our clients' mission‑critical needs, powered by technology. We provide cutting‑edge solutions, including AI/ML, enterprise modernization, and advanced intelligence...Full time- ...Join to apply for the Cloud Operations Engineer, Mid Level role at Jobright.ai 3 days ago Be among the first 25 applicants Join to... ...Employment type Full-time Job function ~ Industries Software Development Referrals increase your chances of...Full timeWork at office
$86k - $138k
...Data & AI Integration Engineer - Mid-Level Job Locations US-VA-Reston Requisition ID 2026-166005 Position Category Information Technology Clearance Top Secret/SCI Responsibilities Peraton is seeking a skilled and...Contract workWork at officeShift work- ...Software Engineer (Journeymen - SME Level) Software Engineering CareersBethesda,Maryland Software Engineer – TS/SCI with Full Scope Polygraph Xcelerate Solutions is seeking a Software Engineer to support the design, development, and implementation of mission-critical systems...
- ...Astor- is seeking a skilled Mid-Level Front End Developer for a full-time, remote position. The role involves developing and maintaining responsive web applications, collaborating with designers and back-end developers, and writing clean code using modern JavaScript frameworks...Full timeRemote work
- ...Job Title Software Developer Level 2 Location McLean, VA 22102 US (Primary) Category Research, Development, and Engineering Job Type Full-Time Career Level Staff Education Bachelor's Degree Travel Up to 25% Security Clearance Required...Full time
- ...Steelcut Software is in the process of expanding. We are looking for Software Engineers, Systems Administrators, and Subject Matter Experts to lead development and deployment... ..., veteran, or other protected status. Entry-Level Software Engineer — Remote This is a great...Contract workInternshipRemote workFlexible hours
$91.8k - $114.7k
...Program is open to all ranks and experience levels. SkillBridge participants are not... ...deployment, and sustainment of satellite ground software. These positions are located onsite on... ...supports our Space Systems East Engineering Software Controls Engineering (SCE) group...Full timeWork experience placementInternshipRelocationShift work$91.8k - $114.7k
...deployment, and sustainment of satellite ground software. These positions are located onsite on... ...supports our Space Systems East Engineering Software Controls Engineering (SCE) group... ...given to Top Secret with SCI Primary Level Salary Range: $91,800.00 - $114,700.00...Relocation packageShift work- ...Overview Kastle Systems is looking for a Full Stack Software Engineer to join our team in Falls Church, VA to help us grow and support... ...used 24/7 by Kastle operations staff to provide the highest level quality of service and support to our customers. This position...Remote work
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