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At EXP, you will experience the full lifecycle of modern software development; from Agile scrum meetings, designing new features, developing new capabilities using the latest open-source frameworks, to directly working with end-users to ensure we are solving their mission needs, and maintaining the operational system. Salary Ranges by Career Level: Early-career: $95,600 - $147,200 Mid-career: $130,300 - $209,900 Late-career: $154,600 - $242,900 We recognize that every candidate brings a unique combination of experience and expertise.

Expedition Technology

Software Engineer: Front End - R128

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Software Engineer, SIGINT Analyst, Intelligence Systems Developer, Cybersecurity Software Developer, Signals Data Engineer, Embedded Systems Developer, Intelligence Application Developer, Full Stack Developer, Backend Developer, Data Processing Engineer, etc. Computer Science, Software Engineering, Electrical Engineering, Cybersecurity, Information Technology, Data Science, Systems Engineering, Mathematics, Artificial Intelligence, Information Systems, etc.

Cymertek

SIGINT Software Developer

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Experience working with knowledge graph or graph‑centric architectures, ideally Neo4j/DGraph/ArangoDB or similar technologies, supporting large scale data management for use in physics based simulation workflows. To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State.

YEAR

Redwire Space

Software Engineer, Back End (Software Engineer)

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Established in 2015, Fantom Corp serves Federal customers with top-notch Cybersecurity Architects, Data Scientists/Analysts, Software Engineers/Developers, DevSecOps Engineers, Project Managers, Identity, Credential Access Management (ICAM) services, and Cloud-certified practitioners. Fantom Corp is a Software Development, Agile Cloud, Software Development, Cyber Security (Risk Management, Assessments & Authorization (A&A)), Data, AI Platform (Computer Vision Models), Podcasting Media Services, and IT Services provider.

Fantom Corporation

Software Engineer

Engineers in this role will design, build, and deploy analytical tools, machine learning workflows, knowledge systems, and multi user applications that enable the customers to transform siloed data into accessible, actionable insight. 4+ years of Python development experience, including application development and Git based version management OR; 4+ years of front end TypeScript experience with multi user production deployments, plus at least 2 years of Python proficiency.

Agile Defense

Applied Data & Software Engineer

The successful candidate will be expected to develop deep knowledge of the enrollment product and its workflows, contribute across multiple applications and services, and grow into ownership of platform features and components. This individual will work across a platform supporting online and onsite enrollment, identity-document processing, biometric capture, payments, enrollment-station hardware, and supporting cloud services.

For more than 25 years, Telos Corporation has pursued a single goal: to empower and protect the enterprise with continuous security assurance for people, systems, and information.
 
The Telos work environment encourages creativity, embraces change, and rewards the individual and collective contributions of our employees. At Telos, we realize that our success as a company stems directly from our success as an employer. That is why we are committed to finding, attracting, and keeping the best talent available. We reward expertise with professional growth and opportunity, an excellent salary, and an extensive benefits package. If this appeals to you, we invite you to put Telos on your career path.
 
Headquartered in Ashburn, VA, outside the Washington, D.C. metropolitan area, Telos Corporation is located in the heart of the Dulles technology corridor. We have grown into a worldwide operation of professionals who are world-renowned for their software development, security, integration, and systems management expertise.

Telos Corp

Software Engineer Sr

Apply now to join our team of exceptional engineers protecting our nation's security. Collaborate with top minds in electrical engineering and computer science.

Aligning Talent Consultants

DSP Software Engineer

FULL_TIME

Qualifications: • A Bachelor’s degree with 9 years of relevant experience OR a Master’s degree with 7 years of relevant experience; an additional 4 years of experience maybe considered in lieu of a degree requirement. Overview: Byte Systems, a subsidiary of VTG, is seeking a Senior Software Engineer/Team Lead to join our diverse team at our Herndon, VA, office.

Software Engineer IV

[AW]-iCims

Due to the citizenship requirement for this role, which supports U.S. federal, state, and/or local government customers, citizenship will be verified through two of the following REAL ID Act documents: U.S. Passport, Passport Card, REAL Driver's License, Global Entry Card, U.S. Government CAC/PIV. You will need deep experience with concurrency, large scale systems, proficiency with solving real-world data management challenges, a strong understanding of how to craft solutions that are highly available, and a proven ability to design, develop, and optimize the core back-end systems.

Salesforce Inc

GovCloud Distributed Systems Software Engineer

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This role is ideal for someone who thrives in complex, large-scale distributed systems, brings deep expertise in Java and Spring Boot, and is passionate about building scalable, secure, and maintainable backend architectures that power high-profile analytical platforms. Data Modeling & Database Engineering: Design and implement relational data models and Entity Relationship Diagrams (ERDs); develop, optimize, and maintain schemas and queries against Oracle RDS and other relational database systems.

SWIFT is a member-owned cooperative that provides the communications platform, products and services to connect more than 10,800 banking organisations, securities institutions and corporate customers in over 200 countries and territories. SWIFT enables its users to exchange automated, standardized financial information securely and reliably, thereby lowering costs, reducing operational risk and eliminating operational inefficiencies. SWIFT also brings the financial community together to work collaboratively to shape market practice, define standards and debate issues of mutual interest. SWIFT is headquartered in Belgium and has over 24 offices worldwide. In 2014 SWIFT processed more than 5.6 billion FIN messages.

Swift

Software Engineer - Backend

This role is deeply technical and ideal for someone who thrives in complex, large-scale codebases, brings a strong command of Angular and TypeScript, and is passionate about delivering intuitive, performant, and accessible user experiences. Cross-Functional Collaboration: Collaborate with backend engineers, platform teams, and UX designers to define frontend architecture patterns, shared component libraries, and integration contracts.

Software Engineer - Frontend

Salesforce.com, Inc.

Distributed Systems Software Engineer, Govcloud - Senior/Lead

This role will involve developing and updating interfaces between front end and back end, updating the code architecture to scale up and enable more parallel instances, configuring the code to work with GPUs, and various other performance updates. Overview: VTG is seeking an Associate Software Engineer to work with our software for modeling acoustic beampatterns for submarine sonar arrays.

Associate Software Engineer

FINRA employees are required to disclose to FINRA all brokerage accounts that they maintain, and those in which they control trading or have a financial interest (including any trust account of which they are a trustee or beneficiary and all accounts of a spouse, domestic partner or minor child who lives with the employee) and to authorize their broker-dealers to provide FINRA with duplicate statements for all of those accounts. Additional insurance includes basic life, accidental death and dismemberment, supplemental life, spouse/domestic partner and dependent life, and spouse/domestic partner and dependent accidental death and dismemberment, short- and long-term disability, long-term care, business travel accident, disability and legal.

Financial Industry Regulatory Authority, Inc.

Senior Software Engineer

For an impactful career doing meaningful work, we are The Logical Answer in a world where being a consultant often feels like you’re a commodity, TLA provides a refreshing culture of inclusion, a direct line to leadership, and a family feel where our teammates are valued for their expertise and contributions. In this role, you’ll contribute to the full software lifecycle—from architecture and development to testing and deployment—across both commercial and government cloud environments operating at multiple security levels.

TLA-LLC

Design software and deployment patterns that support multi-cloud environments, such as cloud-agnostic Terraform modules, minimal provider lock-in for core services, and future deployments across commercial cloud and GovCloud. The Role As a Senior Software Engineer at Kestrel, you will lead the design and development of data structures, data processing pipelines, APIs, components of an agentic AI architecture, and user interface components.

Kestrel Intelligence

Senior Software Engineer (Virginia)

Core Responsibilities: - Design and deploy our infrastructure using Terraform - Lead the deployment of Python-based APIs to cloud environments - Experience with large-scale infrastructure architecture - Establish infrastructure best practices from the ground up, including: Environment separation (dev / staging / prod); Secure networking, IAM, and secrets management; Logging, monitoring, and alerting Design and maintain CI/CD pipelines using GitHub Actions - Apply prior AWS GovCloud and DoD IL experience to ensure: Compliance-ready infrastructure; Architecture choices that will not block future government deployments - Design infrastructure and deployment patterns that support multi-cloud environments, including: Cloud-agnostic Terraform module design where practical; Minimizing provider lock-in for core services; Supporting future deployments across commercial cloud and GovCloud environments - Plan and advise on future AWS GovCloud and DoD IL deployments, even if those environments are not immediately live - Identify and mitigate infrastructure and compliance risks early Bonus: - Strong software engineering background is a plus, particularly: API development; Distributed or service-oriented systems; Prior experience designing or operating multi-cloud environments is a plus - Based in the Colorado Springs, CO or Washington, DC (working in customer sites in Crystal City, VA and Herndon, VA) areas - Active Top Secret // Specially Compartmented Information (TS//SCI) clearance with counterintelligence-scope polygraph (CSP) or full-scope polygraph (FSP) Must be a US Citizen We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. The Role As a Kestrel Software Engineer, you will lead the development of CI/CD artifacts, data structures, data processing pipelines, components of an agentic AI architecture, and user interface components.

Software Engineer (Virginia)

AI Stack: Claude Code, GraphRAG/Advanced RAG, Model Context Protocol (MCP), LangChain/LangGraph, pgvector/Pinecone, DeepEval/Ragas/Arize Phoenix, and LangSmith/Langfuse (or equivalent tooling). Data Platforms: ELT/ETL, Relational/NoSQL DBMS, Vector databases, and cloud data platform integrations (dbt, Dagster, Airbyte, Snowflake).

SS&C Technologies Holdings Inc

Senior Software Engineer - SS&C EVOLV

If you've been building your skills in backend development, object‑oriented programming, and mission‑driven engineering, and you're ready for work that actually moves the needle, this is the kind of opportunity cleared engineers pursue when they want to grow while making real impact. For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

SAIC is a premier Fortune 500® technology integrator driving our nation's digital transformation. Our robust portfolio of offerings across the defense, space, civilian, and intelligence markets includes secure high-end solutions in engineering, IT modernization, and mission solutions. Using our expertise and understanding of existing and emerging technologies, we integrate the best components from our own portfolio and our partner ecosystem to deliver innovative, effective, and efficient solutions that are critical to achieving our customers' missions.

We are a team of 26,000 strong driven by mission, united purpose, and inspired by opportunity. Headquartered in Reston, Virginia, SAIC has annual revenues of approximately $7.1 billion. For more information, visit saic.com.

Leidos Holdings Inc

Mid-Level Backend Software Engineer

You implement the Senior UX Designer's workflow designs and work with the program's architects, the Systems Integration Engineer, and the Product Manager/Fires SMEs. That puts weight on both ends of the stack: services that recompute quickly when inputs change, and interfaces that present dense comparisons and geography clearly.

Software Engineer Jobs in Ashburn, VA

Software Engineer: Front End - R128 Expedition Technology

SIGINT Software Developer Cymertek

Software Engineer, Back End (Software Engineer) Redwire Space

Software Engineer Fantom Corporation

Applied Data & Software Engineer Agile Defense

Software Engineer Sr Telos Corp

DSP Software Engineer Aligning Talent Consultants

Software Engineer IV VTG

GovCloud Distributed Systems Software Engineer Salesforce Inc

Software Engineer - Backend Swift

Software Engineer - Frontend Swift

Distributed Systems Software Engineer, Govcloud - Senior/Lead Salesforce.com, Inc.

Associate Software Engineer VTG

Senior Software Engineer Financial Industry Regulatory Authority, Inc.

Senior Software Engineer TLA-LLC

Senior Software Engineer (Virginia) Kestrel Intelligence

Software Engineer (Virginia) Kestrel Intelligence

Senior Software Engineer - SS&C EVOLV SS&C Technologies Holdings Inc

Mid-Level Backend Software Engineer Leidos Holdings Inc

Full-Stack Software Engineer Agile Defense

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