Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Senior Software Engineer

VTG Defense

Overview

We are seeking an experienced Senior Software Engineer to provide development engineering and programming support for software projects and infrastructure support activities.

The successful candidate will be responsible for designing, developing, modernizing, and maintaining software applications, including developing new cloud-based applications and transitioning legacy systems to cloud environments.

This role requires experience with multiple programming languages, database architecture, software testing, and cloud services. The engineer will collaborate with customers, systems analysts, engineers, and development teams to deliver software solutions that meet operational and technical requirements.

What will you do?

  • Design, develop, modify, and maintain software applications to support project requirements and infrastructure operations.

  • Develop new applications within cloud environments and support the migration and modernization of legacy applications to the cloud.

  • Provide database architecture and design capabilities to support application development and system performance.

  • Develop unit and functional test plans to validate software functionality and reliability.

  • Provide operations and maintenance (O&M) support for operational software systems.

  • Modify existing software to correct errors, accommodate new hardware, improve performance, and address evolving requirements.

  • Analyze user needs and software requirements to determine the feasibility of proposed designs within established time and cost constraints.

  • Consult with customers regarding software system design, development, and maintenance.

  • Coordinate software installation activities and monitor system and equipment functionality to ensure specifications are met.

  • Design, develop, and modify software systems using scientific analysis and mathematical models to predict and evaluate design outcomes.

  • Develop and direct software testing, validation procedures, programming activities, and technical documentation.

  • Collaborate with systems analysts, engineers, programmers, and other technical personnel to identify project limitations, system capabilities, performance requirements, and interface specifications.

  • Troubleshoot software defects, implement corrective changes, and retest applications to verify expected results.

  • Conduct trial runs of programs and software applications to validate functionality, data accuracy, and execution instructions.

  • Develop and maintain documentation covering program development, modifications, and subsequent revisions, including clear and understandable code comments.

  • Write, update, and maintain software programs and packages that support operational functions such as inventory tracking, data storage and retrieval, and equipment control.

  • Consult with management, engineering, and technical personnel to clarify program objectives, identify issues, and recommend improvements.

  • Perform or direct the revision, repair, and expansion of existing applications to improve operational efficiency and accommodate new requirements.

  • Write, analyze, review, and revise programs using workflow charts, diagrams, and established programming principles.

  • Develop user instructions and technical manuals to support software operation and maintenance.

  • Prepare detailed workflow charts and diagrams describing system inputs, outputs, and operational logic, and translate those designs into executable code.

Do you have what it takes?
  • Active TS/SCI with Polygraph
  • Bachelor of Science (BS) degree and 11-15 years of relevant experience.

  • Demonstrated experience with multiple programming languages, including Java, JavaScript, Python, and/or XML.

  • Experience developing, managing, and maintaining web-based software applications.

  • Demonstrated experience working with cloud services and developing cloud-based applications.

  • Experience working within Windows and/or Unix operating environments.

  • Experience using source code repositories and version control tools such as Git.

  • Demonstrated experience creating and maintaining technical documentation, including source code documentation and development methodologies.

  • Familiarity with developing and executing unit and integration tests.

Vacancy posted 3 days ago
Similar jobs that could be interesting for youBased on the Senior Software Engineer in Chantilly, Loudoun County, VA vacancy
  •  ...Software Engineer Cohere is looking for a Software Engineer to join our team in our Chantilly office. This person is responsible for the...  ...to take your career to the next level, with the ability to learn from senior engineers invested in your success, apply today!... 
    Senior
    Work at office
    Flexible hours

    Cohere Technology Group

    Chantilly, Loudoun County, VA
    3 days ago
  •  ...VTG is seeking a Software Engineer-Expert for a 200+ FTE technical development program supporting the Sponsor's Entitlement Programs as well as IdAM /ICAM, Authentication, Authorization, Attributes and Digital Policy Management. The Software Engineer will work with a large... 
    Senior

    VTG Defense

    Chantilly, Loudoun County, VA
    22 hours ago
  • $200k - $270k

     ...What You'll be Owning The Senior Software Engineer will be responsible for working within Cloud Services for the Sponsor, using Python, Javascript, and other tools to provide software development support. This is a brand new initiative, born from our success in other... 
    Senior
    Contract work
    Immediate start

    GRVTY

    Chantilly, Loudoun County, VA
    1 day ago
  • $146k - $234k

     ...Senior Software Engineer Job Locations US-VA-Chantilly Requisition ID 2025-156876 Position Category Information Technology Clearance Top Secret/SCI w/Poly Responsibilities As a Senior Software Engineer at Peraton... 
    Senior
    Contract work
    Shift work

    Peraton

    Chantilly, Loudoun County, VA
    1 day ago
  •  ...Senior Software Engineer Boeing Defense, Space & Security (BDS) has an exciting opportunity for a Senior Software Engineer to join the National Systems Programs (NSP) software team in El Segundo CA or Chantilly, VA. The selected candidate will perform full stack... 
    Senior
    Work experience placement

    Boeing

    Chantilly, Loudoun County, VA
    4 days ago
  •  ...the Role Redhorse transforms the way government uses data and technology. To support this mission, we are seeking a Senior Software Systems Engineer who will serve as a recognized authority within the company. In this high-impact role, you will tackle unusually... 
    Senior
    Contract work

    Redhorse Corporation

    Chantilly, Loudoun County, VA
    1 day ago
  • $150k - $225k

    Summary Position Title: Senior Software Engineer  Position ID: TA256 Location(s): Hybrid; Aurora, CO; Chantilly, VA Application Deadline: September 30, 2026 Security Clearance Requirement: TS/SCI Security Clearance Job Description Trusted Space is seeking... 
    Senior
    Full time
    Temporary work
    Local area

    Trusted Space, LLC

    Chantilly, Loudoun County, VA
    25 days ago
  • $143.3k - $214.85k

     ...allow them to thrive in space including solar panels, flight software, star trackers, optical systems, separation systems, and...  ...empowering the boldest and most ambitious space missions. SENIOR SOFTWARE ENGINEER II Rocket Lab Optical Systems solves mission-critical... 
    Senior
    Permanent employment
    Local area

    Rocket Lab

    Chantilly, Loudoun County, VA
    9 hours ago
  • $86.9k - $198k

     ...Job Number: R0247403 Software Engineer, Senior The Opportunity: We are seeking a Software Engineersupport Agile design, development, integration, and deployment of a mission management softwarefor heterogeneous, proliferated satellite constellations. Your ability... 
    Senior
    Full time
    Contract work
    Part time
    Work at office
    Local area
    Remote work

    Booz Allen Hamilton

    Chantilly, Loudoun County, VA
    4 days ago
  •  ...The Software Engineer will design and develop complex software systems and make significant enhancements to existing software. The ideal candidate...  ...junior employees.   At GCI, we solve hard problems. As a Senior Software Engineer, a typical day will include the following... 
    Senior
    Full time

    Gci Careers

    Chantilly, Loudoun County, VA
    more than 2 months ago
  •  ...mission requirements in the areas of Data Analytics and Software Development, Engineering, Targeting and Analysis, Operations, Training, and Cyber...  ...customers and industry. At GCI, we solve hard problems. As a Senior Software Engineer, a typical day will include the... 
    Senior
    Full time

    Gci Careers

    Chantilly, Loudoun County, VA
    a month ago
  •  ...About the Role Redhorse transforms the way government uses data and technology. To support this mission, we are seeking a Senior Software Engineer (SME )with deep technical expertise to lead complex engineering initiatives. This is a high-impact role designed for a... 
    Senior
    Contract work

    Redhorse Corporation

    Chantilly, Loudoun County, VA
    a month ago
  • $107.9k - $195.05k

     ...Leidos is seeking a Software Developer for a 200+ FTE technical development program supporting the Sponsor’s Entitlement Programs as well...  ..., Attributes and Digital Policy Management. The Software Engineer will work with a large team of developers, software engineers and... 
    Senior

    Via Logic LLC

    Chantilly, Loudoun County, VA
    9 hours ago
  • $95k - $190k

     ...customers in over 30 countries, across six continents, JSI's software is used to expand awareness, surface patterns, and simplify...  ...JSI USA is seeking a highly motivated and experienced Senior Software Engineer for our Chantilly, Virginia office. This customer-facing role... 
    Senior
    Work experience placement
    Casual work
    Work at office
    Remote work

    Jatom Systems Inc

    Chantilly, Loudoun County, VA
    9 hours ago
  • $215k - $240k

     ...intelligence solutions and operations, network infrastructure, engineering and business enablement and enterprise operations company...  ...area firms and continues to grow. We are actively hiring a Senior Software Engineer (Leadership)   with a TS/SCI clearance and... 
    Senior
    Full time
    Contract work
    Work experience placement
    Remote work

    Acclaim Technical Services

    Chantilly, Loudoun County, VA
    a month ago
  • $154k

     ...Job Description Software Engineer - Senior This position requires an active TS/SCI with Polygraph. We are seeking a versatile Senior Software Developer with expertise in secure software engineering. The ideal candidate will combine technical proficiency in development... 
    Senior
    Full time
    Local area
    Remote work

    Cherokee Federal

    Chantilly, Loudoun County, VA
    1 day ago
  •  ...the Role Redhorse transforms the way government uses data and technology. To support this mission, we are seeking a QA Senior Software Engineer to serve as a recognized authority within the company. In this role, you will do more than just execute tests; you will be... 
    Senior
    Contract work

    Redhorse Corporation

    Chantilly, Loudoun County, VA
    a month ago
  • $130k - $170k

     ...Senior AI Software Engineer Chantilly/Herndon, VA Dark Wolf constructs and deploys data management and analytics solutions for the defense and intelligence communities. We're proud to boast a world-class engineering team that thrives on rolling up their sleeves to... 
    Senior
    Full time
    For contractors

    Dark Wolf Solutions

    Chantilly, Loudoun County, VA
    4 days ago
  •  ...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... 
    Senior
    Full time
    Remote work

    Modern Government Solutions

    Herndon, VA
    15 days ago
  •  ...Description TLA is seeking a  Software Engineer to design, develop, and integrate secure computing environments that support critical mission objectives. In this role, you’ll contribute to the full software lifecycle—from architecture and development to testing and... 
    Senior
    Full time

    Tla

    McLean, VA
    a month ago
  •  ...government and commercial entities, and provide services for cloud software development, workload migration, deployment automation and...  ...LEVEL: Secret  BASIC QUALIFICATIONS Development/software engineering or the development of applications for the processing and... 
    Senior
    Full time

    C2S Consulting Group

    Herndon, VA
    more than 2 months ago
  •  ...DoD) to transform data into actionable intelligence, ensuring mission success in an evolving world. Our mission-first software and data engineering platform modernizes data operations, utilizing advanced workflows, CI/CD, and secure DevSecOps practices. We focus on... 
    Senior
    Full time
    Flexible hours

    Clarity Innovations, Inc.

    Herndon, VA
    more than 2 months ago
  •  ...results. At Snowflake, your role isn't just to execute a function, but to help redefine the future of how work gets done. Senior Software Engineer, Snowflake Natsec Running Snowflake in public sectors in different countries and regions, even in different industry... 
    Senior
    Full time
    Contract work

    Snowflake

    McLean, VA
    15 days ago
  •  ...large volumes of data in support of national security objectives. The ideal candidate will bring a strong mix of full stack engineering capabilities and data-intensive application experience , with the ability to operate in a fast-paced, highly collaborative environment... 
    Senior

    KDA Consulting Inc

    Chantilly, Loudoun County, VA
    a month ago
  • $125k - $190k

     ...team and support our customers in building a safer global future. Overview of Opportunity As a Two Six Technologies Senior Software Engineer for a large-scale platform for situational awareness and command and control, you will work with the development team,... 
    Senior
    Full time
    Contract work
    Work at office
    Local area

    Twosix Technologies

    Herndon, VA
    a month ago
  •  ...while working alongside a team that celebrates wins, makes big decisions, and blazes new trails together. About the role Software Engineers at Range are responsible for scoping requirements and delivering impactful features by working closely with product, design,... 
    Senior
    Full time
    Work at office
    Relocation
    Monday to Friday

    Range

    McLean, VA
    more than 2 months ago
  • $175.43k - $183.61k

    ICF Incorporated, LLC: Senior Software Engineer (Multiple Positions) Reston, VA. DUTIES: Apply computer science, software engineering, databases, and distributed/parallel processing frameworks to prepare big data for the use of scoring and scoring results... 
    Senior
    Full time
    Contract work
    Work experience placement
    Work at office
    Remote work

    Icf International, Inc.

    Reston, VA
    more than 2 months ago
  •  ...depend on every day. You’ll apply systematic and disciplined software‑engineering practices to create reliable, audit‑compliant systems that...  ...environments where performance and accuracy matter. As a Senior Developer II, you will operate as a technical leader, mentoring... 
    Senior
    Full time
    Temporary work
    Immediate start
    Remote work

    Anavation Llc

    Chantilly, Loudoun County, VA
    a month ago
  • $155k - $185k

     ...technology that’s redefining what’s possible in remote sensing, you belong here at Umbra. About the Job We are seeking a Senior Software Engineer to join our Command, Control, and Communications (C3) team to help design and build the systems that power autonomous... 
    Senior
    Permanent employment
    Full time
    Work at office
    Local area
    Remote work
    Worldwide
    Flexible hours

    Umbra

    Reston, VA
    more than 2 months ago
  • $165k - $220k

     ...What Impact You'll Have GRVTY is looking for a Senior Software Engineer to join a small, technically focused team supporting national security missions at a customer site in Herndon, Virginia. This is hands-on engineering work — you will be designing and building... 
    Senior
    Full time
    Contract work
    Immediate start
    Remote work

    GRVTY

    Herndon, VA
    a month ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Senior Software Engineer. Be the first to apply!