Computer science jobs in Ashburn, VA

Internships in Computer Science or Software Engineering

McLean, Virginia

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Today

At MITRE, your passion fuels work that impacts our nation and improves lives. This is where your skills strengthen national security, cybersecurity, health, transportation, and citizen services. We're a nonprofit engineering, applied research, and advanced technology organization working in the public interest. With objectivity and integrity at our core, we lead federally funded research and development centers for U.S. government agencies - collaborating with industry and academia to deliver in

Full-time

USD 46,500.00 - 58,000.00 per year

Postgres SME

Hybrid in Herndon, Virginia

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12d ago

Job Title: Postgres SME Location: Herndon, VA Type: Direct Hire Compensation: Work Model: Hybrid onsite and remote Hours: 40.0 Security Clearance: Active Secret Clearance Required Responsibilities Design, deploy, and maintain high-performance Postgres database environments Troubleshoot and resolve database performance issues Implement database security best practices and ensure data integrity Develop and optimize SQL queries and stored procedures Collaborate with cross-functional teams to desi

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Full-time

Depends on Experience

ETL Software Engineer, Mid

McLean, Virginia

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4d ago

ETL Software Engineer (Mid) Remote - EST or CST times zones 6 Months Responsibilities:Provide program design, coding, testing, and production implementation of ETL/EDI data exchanges.Assist in researching and documenting user requirements and system specifications.Design and develop complex program logic addressing specific programming needs.Maintain, adapt, and update existing systems to meet user requirements and enhance program efficiency.Translate solutions provided by system designers into

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Third Party, Contract

$45 - $50

Senior GenAI & Data Engineer

Hybrid in Reston, Virginia

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16d ago

Job Title: Senior GenAI & Data Engineer Location: Reston, Virginia Type: Direct Hire Work Model: Hybrid onsite and remote Overview System One is seeking a Senior GenAI & Data Engineer to develop and integrate AI-enabled solutions within a large-scale financial services environment. This role combines hands-on Generative AI and LLM development with strong data engineering, Python, and AWS cloud expertise. This position has an onsite expectation of 35 days per week in Reston, VAwith local candi

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Full-time

$180000

Senior GenAI & Data Engineer

Hybrid in Reston, Virginia

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10d ago

Easy Apply

Full-time

$110000

Agile System Engineer III

Chantilly, Virginia

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Today

Overview VTG is looking for an Agile System Engineer in Chantilly, VA. Agile System Engineer provides technical leadership for systems engineering activities across Agile teams, ensuring mission alignment, architectural integrity, and delivery discipline. What will you do? Lead end to end systems engineering activities within Agile delivery frameworksDefine and manage system level requirements, dependencies, and technical risksGuide decomposition of complex mission needs into scalable Agile

Full-time

AI Data Scientist

McLean, Virginia

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14d ago

Job Title: AI Data Scientist Location: Remote Responsibilities Partner with stakeholders to define and deliver AI/analytics use cases, translating business needs into scalable data science solutions. Design and develop machine learning models and analytical approaches to support search, discovery, and insight generation across structured and unstructured data. Build and implement NLP, semantic search, and entity resolution capabilities to enable advanced information retrieval and relationship a

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Contract

Depends on Experience

Senior Software Engineer - TS/SCI w CI Poly

Herndon, Virginia

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Today

TITLE: Sr. Software Engineer LOCATION: Herndon, VA CLEARANCE REQUIRED: Active TS/SCI with CI Polygraph EMPLOYMENT TYPE: Full-Time, Onsite POSITION SUMMARY Modern Government Solutions (MGS) is seeking a Sr. Software Engineer to design, develop, and integrate software solutions within secure on-premises and cloud-based environments in support of national intelligence missions. In this role, you will apply your expertise in C/C++ and Python development to build and integrate mission-critical c

Full-time

USD 150,000.00 - 180,000.00 per year

Sr. ServiceNow Developer - CSM

Hybrid in Reston, Virginia

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Today

Senior ServiceNow Developer (CSM) Location: Reston, VA (Hybrid) Duration: 9-Month Contract Employment Type: W2 Compensation: $83.33 Overview We are seeking a Senior ServiceNow Developer with strong experience in Customer Service Management (CSM) to support the development and enhancement of enterprise ServiceNow applications. This role focuses on building and improving customer-facing solutions, Service Portals, integrations, and custom workflows within a complex ServiceNow environment serving

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Contract

$83.33

Senior Full Stack Engineer

Hybrid in Reston, Virginia

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3d ago

Job Title: Senior Full Stack Engineer Location: Reston, Utah Type: Permanent Full Time Work Model: Hybrid onsite and remote Responsibilities Develop and execute end-to-end performance tests, analyze application behavior, and identify bottlenecks across integrated systems, microservices, databases, and AWS services.Investigate performance issues beyond the testing layer, determine root causes, and recommend or implement appropriate remediation.Tune and refactor Java applications, optimize Postg

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Full-time

Depends on Experience

Junior Java Developer

Reston, Virginia

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12d ago

Company DescriptionTechSurSolutions is a digital services company whose mission is to enable digital transformation for our customers to improve quality and efficiency.Based in the DC metropolitan area,TechSurspecializes in advanced cloud services, modernization for both ITstructuresand applications, leveraging Agile development, and Data Analytics.Since we were formed inAugust of2016,we have supported multiple impactful and excitinggovernment programs. Job DescriptionResponsibilities: Utilize

Full-time

Depends on Experience

Platform Data Engineer

Merrifield, Virginia

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4d ago

Title: Platform Data Engineer Location: Merrifield, VA Employment Type: Contract Compensation: Pay Range;$85.00-$95.00 Per Hr Description: The position involves joining a dynamic engineering organization to support digital applications and services, enhancing user experiences and driving strategic initiatives. This role requires designing robust database solutions, optimizing performance, and ensuring data security. The job is a hybrid contract position, working with modern database technolog

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Third Party, Contract

$85 - $95

Mid-Level Backend Software Engineer

Gaithersburg, Maryland

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11d ago

Job Title: Mid-Level Backend Software Engineer-TS/SCI Location: Gaithersburg, MD Type: Contract To Hire Compensation: Work Model: Onsite Hours: 40.0 Security Clearance: Top Secret/SCI Overview Active TS/SCI Security Clearance requiredwith the ability to successfully pass a Polygraph Responsibilities Design, develop, test, and maintain backend application components using Java or Python Develop and maintain RESTful services to support application functionality and system integrations Apply objec

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Contract

$60

Agile System Engineer I

Chantilly, Virginia

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Today

Overview VTG is looking for an Agile System Engineer in Chantilly, VA. The Agile System Engineer I supports system engineering activities within an Agile delivery environment, assisting with requirements development, backlog grooming, and integration planning under senior supervision. What will you do? Support decomposition of mission and system requirements into Agile epics, features, and user storiesAssist with requirements traceability (e.g., RTM) across backlog items, design artifacts, and

Full-time

Mission Integration Engineer

Chantilly, Virginia

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Today

Job ID: 2615185 Location: Chantilly, VA, US Date Posted: 2026-08-03 Category: Engineering and Sciences Subcategory: Systems Engineer Schedule: Full-Time Shift: Day Job Travel: No Minimum Clearance Required: TS.SCI_wPoly Clearance Level Must Be Able to Obtain: None Potential for Remote Work: ORA_ON_SITE Description SAIC is seeking a Mission Integration Engineer to provide SETA support to SAIC's Prime Program, Landmark AOS in Chantilly, VA. Landmark AOS is a large SETA program, supporti

Full-time

USD 160,001.00 - 200,000.00 per year

Data Science - Principal Associate

McLean, Virginia

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29d ago

Role: Data Scientist - Principal Associate Duration: 12 Months Mode of Work: Onsite Location: McLean, Virginia or Richmond, Virginia In this role, you will: Dive into ambiguous fraud landscapes to identify opportunities where machine learning can drive value. You will help design the technical vision for our authentication workflows, evaluating feasibility and prototyping innovative ML solutions. Harness our big data ecosystem (Spark, AWS, and more) to uncover hidden patterns in massive datase

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Contract

Depends on Experience

Data Scientist

Washington, District of Columbia

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Today

Location: Washington, DC Salary: $50.00 USD Hourly - $54.00 USD Hourly Description: Data Scientist / Data Engineer Location: Washington, DC (100% Onsite, 5 days/week) Clearance: Public Trust (Must be eligible to obtain) Pay Rate: $50 - $54/hr Overview We are seeking a versatile Data Scientist / Data Engineer to join a high-performing data team. This hybrid role combines advanced data engineering expertise with data science and machine learning capabilities. The ideal candidate will build and

Contract

USD 50.00 - 54.00 per hour

Software Engineer (Top Secret clearance required)

Reston, Virginia

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Today

Software Engineer Simulation, Optimization & Decision Support Join a team building mission-critical software that turns complex technical concepts into tools decision-makers actually rely on. You ll work across the full stack from backend services to the interfaces that make sophisticated simulations and optimization models usable and across the full lifecycle, from early prototyping through deployment. We re a small, collaborative group where engineers own real problems end to end. If you like

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Full-time

Depends on Experience

High-Performance Computing Engineer

McLean, Virginia

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Today

Overview iota IT, a subsidiary of VTG, is seeking a High-Performance Computing Engineer in McLean, VA. What will you do? The highly skilled High Performance Computing Engineer to design, implement, and maintain advanced computing solutions in support of mission-critical operations.The ideal candidate will bring deep technical expertise in large-scale HPC environments, cluster management, GPU computing, and high-speed networking. Do you have what it takes? Active Top Secret/Sensitive Compartm

Full-time

Security Data Engineer

Herndon, Virginia

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Today

MANTECH seeks a motivated, career and customer-oriented Security Data Engineer to join our team in Herndon, VA. in this role you are responsible for building and maintaining enterprise data feeds that power network and security intelligence platforms. In this role, you will integrate data from multiple vendor APIs, create robust ETL pipelines, and leverage AI to handle complex data extraction and normalization challenges. Responsibilities include, but are not limited to: Design and maintain ent

Full-time

Computer science jobs in Ashburn, VA, USA