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

Senior Software Engineer

ECS

Overview

Senior Software Engineer to work in the National Capital Region covering the Pentagon, Falls Church, and Fairfax. This position is contingent upon contract award.

The War Data Platform (WDP) is a key initiative within the DoW AI-First strategy and supports operational warfighting data across Unclassified, Secret, and Top Secret environments. It enables collaboration between Combatant Commands, Joint Staff directorates, Senior Executive Service leaders, and operational analysts.

Responsibilities
  • Executes complex software engineering activities by transforming system design artifacts, user requirements, and mission workflows into scalable software capabilities supporting WDP Core Integration operations on NIPRNet, SIPRNet, and JWICS.
  • Develops advanced application features, data-processing logic, and automation modules using Python, Java, Go, JavaScript, Terraform, Docker, and Kubernetes to expand mission analytics, platform services, and customer-facing tools.
  • Leads complex feature development, conducts in-depth code reviews, and drives high-volume story-point delivery across sprint cycles.
  • Owns the application architecture, resolves design conflicts, defines the security-by-design baseline, and establishes immutable infrastructure patterns through reusable Terraform and Ansible modules.
  • Reviews all code for security and compliance alignment and architects end-to-end pipeline workflows with clearly defined quality gates.
  • Creates baseline STIG and container-hardening profiles, automates compliance reporting, and leads remediation strategies across mission applications.
  • Designs Infrastructure-as-Code and Configuration-as-Code patterns that enforce environmental consistency, reduce configuration drift, and support repeatable provisioning across the full software lifecycle.
  • Integrates automated testing components into CI/CD pipelines to support unit testing, regression analysis, compliance validation, performance testing, and mission-aligned acceptance checks.
  • Designs observability stacks, leads incident post-mortems, and authors high-level architecture and compliance documentation.
  • Evaluates emerging technologies and drives adoption strategies that strengthen mission resilience.
  • Collaborates with platform engineering, cybersecurity operations, configuration-management teams, and DevSecOps pipeline engineers to resolve integration challenges and enhance reliability across mission applications.
  • Delivers source-code updates, technical documentation, performance summaries, and enhancement recommendations that strengthen resilience and operational effectiveness across the WDP Core Integration ecosystem.
  • Performs other duties as assigned.
Required Skills
  • Current Secret security clearance with the ability to obtain and maintain a Top Secret (TS) security clearance with Sensitive Compartmented Information (SCI).
  • 10-12 years of progressively responsible experience in software engineering, with demonstrated expertise designing, developing, and delivering mission-critical applications in enterprise or multi-enclave environments.
  • Expert proficiency in two or more modern programming or scripting languages such as Python, Java, Go, or JavaScript, combined with hands-on experience using containerization and orchestration tools including Docker and Kubernetes.
  • Demonstrated experience designing and managing DevSecOps CI/CD pipelines, including Infrastructure-as-Code using Terraform and Ansible, automated testing integration, STIG compliance, and container-hardening practices in classified or government cloud environments.
  • Experience developing and deploying software in DoW-compliant cloud environments such as AWS GovCloud or AWS Secret Region, including familiarity with cloud-native services, observability tooling, and security and accreditation processes applicable to multi-enclave platforms.
  • Strong problem-solving and decision-making capabilities, with a proven ability to weigh the relative costs and benefits of potential actions and identify the most appropriate solution.
  • Highly developed interpersonal and oral/written communication skills, with the ability to effectively and professionally interact with a diverse set of stakeholders (from peers to end-users to executive management).
Desired Skills
  • Active Top Secret (TS) security clearance with SCI eligibility.
  • AWS Solutions Architect (Professional), Certified Kubernetes Administrator (CKA), or an equivalent cloud or platform engineering certification; DoW 8570/8140-compliant cybersecurity certification such as CompTIA Security+ is also highly valued.
  • Prior experience contributing to or leading software engineering efforts on DoW, intelligence community, or defense AI/ML programs such as NGA Maven, CDAO SUNet, or Advana.
  • Familiarity with Agile and Lean software development methodologies, including experience coordinating across multiple engineering teams within program increment cycles and contributing to Agile Scrum ceremonies.
  • Bachelor’s or Master’s degree in Computer Science, Software Engineering, Information Systems, or a closely related technical field.

ECS Federal LLC is an equal opportunity employer and does not discriminate or allow discrimination on the basis of any characteristic protected by law. All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, or local jurisdiction law.

Everforth ECS is the federal segment of Everforth, a large global organization delivering technology solutions in data and AI, cybersecurity, and enterprise transformation for defense, intelligence, and federal civilian agencies. Our work powers mission-critical outcomes and emphasizes excellence in delivery and a culture of innovation.

#J-18808-Ljbffr
Vacancy posted 4 days ago
Similar jobs that could be interesting for youBased on the Senior Software Engineer in Fairfax, VA vacancy
  •  ...challenge. At Antithesis, we run entire software systems inside a deterministic simulation...  ...Antithesis is the Fuzzer, our autonomous search engine for bugs and one of the most technically...  ...without ever letting up. As a Senior Engineer on the Autonomous Search team, you... 
    Senior
    Work at office

    Antithesis Operations LLC

    Vienna, VA
    4 days ago
  •  ...Bridge Core (BCore) seeks a Senior Software Engineer in Tysons, Virginia. The role requires over 10 years of software development experience, leading stakeholder expectations, and expertise in Oracle PL/SQL and web technologies including .Net and JAVA. You will work with... 
    Senior

    Bridge Core

    McLean, VA
    4 days ago
  •  ...The Senior Software Engineer will serve as a senior member of the software development team, responsible for designing, developing, implementing, and supporting enterprise-level applications. This role works independently with minimal supervision and participates in all... 
    Senior

    Compunnel

    McLean, VA
    4 days ago
  •  ...About the Role As a performance-focused Mid to Senior level Software Engineer at Appian, you will build tools to solve complex performance problems and tackle our most challenging technical problems alongside other brilliant engineers. Qualifications 4+ years experience... 
    Senior
    Work at office
    Local area

    Appian

    McLean, VA
    6 days ago
  •  ...Overview Software Engineer Linux Rust Satellite Systems gRPC We are looking for a skilled Software Engineer with Rust experience to join our Sat OS team, which is responsible for developing the high-level operating system for our spacecraft. You will be instrumental... 
    Senior
    Work at office
    3 days per week

    Spire

    McLean, VA
    4 days ago
  •  ...code, but build something from the ground up. We're hiring a Senior Engineer to take over an early-stage product from the CTO and make it...  ...shows You Might Be a Good Fit If You Have 4+ years of software engineering experience Are strong in TypeScript (our... 
    Senior

    Pam LLC

    McLean, VA
    4 days ago
  •  ..., scalable, modular, and API-centric Provide software design recommendations to the Program Manager and Chief Software Engineer Evaluate operational feasibility by analyzing...  ...Management Information Systems, or related STEM field Senior-level experience deploying microservices into... 
    Senior
    Contract work
    Temporary work

    Triglocon

    McLean, VA
    4 days ago
  • $130k - $196k

     ...organization where your work contributes to a greater purpose. Position Overview: We are seeking a highly skilled Senior Software Engineer to join our team and enhance our internal data platform. This role requires expertise in modern cloud-based data infrastructure... 
    Senior
    Full time
    Local area

    Freddie Mac

    McLean, VA
    4 days ago
  • $129k - $193k

     .... Join an organization where your work contributes to a greater purpose. Position Overview Freddie Mac is seeking a Senior Software Engineer to execute for one or more agile delivery teams. This role is for an experienced engineer who can independently drive solution... 
    Senior
    Work at office
    Local area

    Freddie Mac

    McLean, VA
    4 days 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
    Work at office
    Relocation
    Monday to Friday

    Range

    McLean, VA
    9 days ago
  •  ...Senior Software Engineer – Astor & Sanders Astor & Sanders Corporation (Astor), an award‑winning IT solutions provider headquartered in McLean, VA, is seeking a Senior Software Engineer. This is a full‑time position, and is 100% remote. Roles And Responsibilities... 
    Senior
    Full time
    Remote work

    Astor & Sanders

    McLean, VA
    15 days ago
  •  ...owned small business providing advanced cybersecurity, cloud engineering, and IT modernization services to federal and commercial...  ...protect and enable mission success. We are currently seeking a Senior Software Engineer II to support a classified program. This role focuses... 
    Senior

    Kaizen Lab Inc.

    McLean, VA
    5 days ago
  • $150k - $180k

     ...Piper Companies is seeking a remote Senior Software Engineer to join a rapidly growing, mission-driven healthcare technology environment in the northern Virginia area focused on building scalable, high-impact platforms. The Senior Software Engineer is a remote role with... 
    Senior
    Local area
    Remote work

    Piper Companies

    Fairfax, VA
    8 hours ago
  •  ...mission‑critical enterprise applications. Hybrid Workflow Engineering: Develop the orchestration logic that determines when a task is...  ...Professional Experience: At least seven (7–10+) years of experience in software development or application engineering roles, including... 
    Senior
    Work experience placement
    Work at office

    Cybermedia Technologies

    McLean, VA
    4 days ago
  •  ...We are seeking a Senior Software Engineer to join our team. Working at NT Concepts means that you are part of an innovative, agile company dedicated to solving the most critical challenges in National Security. We’re looking for the best and the brightest to join us in... 
    Senior
    Remote work

    NT Concepts

    Vienna, VA
    1 day ago
  • $86.8k - $198k

     ...CANDIDATE JOURNEY Discover what to expect during your journey as a candidate with us. We're looking for a passionate Senior Full-Stack Software Engineer to work with a fast-paced, highly collaborative software development team building and launching capability for Enterprise... 
    Senior
    Full time
    Contract work
    Part time
    Local area
    Remote work

    Phase2 Technology

    McLean, VA
    8 days ago
  •  ...Innovation, and Scale Venture Partners. Hyper-growth. Small team. Every person matters. About The Role We're looking for a software engineer who understands the user's problem, architects a solution, and ships it. Sometimes the same day. Your work lives in production... 
    Senior

    Range

    McLean, VA
    5 days ago
  •  ...Summary We are seeking a highly experienced hands-on Full Stack Engineer to design and development of cutting-edge AI Agents, Agentic...  ...ethical deployment frameworks. Contributions to open-source projects or publications in software development domains. #J-18808-Ljbffr... 
    Senior

    Govserviceshub

    McLean, VA
    4 days ago
  • $125k - $138k

     ...Senior Software Engineer - Full Stack Job number: 786 This is a remote position. Ad Hoc is a technology company that empowers organizations to deliver scalable, impactful digital services. Using modern, agile methods, our team creates products that meet people... 
    Senior
    Contract work
    Temporary work
    Work at office
    Remote work
    Flexible hours

    Ad Hoc LLC

    McLean, VA
    4 days ago
  •  ...We’re looking for a Software Development Engineer for an onsite opportunity in McLean, VA Key Responsibilities Design and develop software products that meet user needs and market demands. Apply engineering principles to construct and maintain efficient, bug-free... 
    Senior

    Centurion, LLC

    McLean, VA
    4 days ago
  •  ...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 deployment—across... 
    Senior

    TLA Inc

    McLean, VA
    5 days ago
  •  ...together. At Appian, we're not only about building awesome software, but also about growing our culture of passion, energy,...  ...people, great software! As a performance-focused Mid to Senior level Software Engineer at Appian you will help build tools to solve complex... 
    Senior
    Work at office
    Local area

    Appian

    McLean, VA
    2 days ago
  •  ...and operational workflows for mission-critical government and enterprise applications. We are seeking a backend-focused Senior Software Engineer to design and build the authorization and identity systems embedded directly within our product. This is a hands-on... 
    Senior

    Clear Fracture

    Vienna, VA
    4 days ago
  •  ...Overview Senior Software Engineer Tysons, VA TS/SCI with Poly At Bcore, our strength comes from how we deliver impact to the mission. Whether it’s architecting critical IT solutions, producing actionable intelligence, or developing cutting edge technology, we succeed... 
    Senior

    Bridge Core

    McLean, VA
    4 days ago
  • $90k - $225k

     ...Altamira Technologies is seeking Senior Software Engineers to join our world‑class Space Systems engineering team in Denver, CO. As a candidate for this opportunity, you should have a good foundation in object‑oriented software development and be experienced working in... 
    Senior
    Work experience placement

    Altamira Technologies

    McLean, VA
    4 days ago
  •  ...Senior Software Engineer Why choose between doing meaningful work and having a fulfilling life? At MITRE, you can have both. That's because MITRE people are committed to tackling our nation's toughest challenges—and we're committed to the long-term well-being of our... 
    Senior
    Work experience placement
    Internship
    Local area
    Immediate start

    MITRE

    McLean, VA
    2 days ago
  • $100k - $120k

    MBA Consulting Services, Inc. (MBA CSi) is seeking a Senior Software Engineer to support a long-term, multi-year engagement with the United States Postal Service (USPS) in Merrifield, VA. In this role, you will design, develop, and enhance enterprise-scale software solutions... 
    Senior
    Full time

    MBA CSi

    Fairfax, VA
    3 days ago
  •  ...Location: McLean, VA or Richmond, VA Work Environment: Hybrid Role Summary As a Senior Software Engineer at Exiger, you will be responsible for designing and developing software projects from a technical implementation perspective that satisfy the project's requirements... 
    Senior
    Work at office
    Work from home
    Flexible hours

    Exiger

    McLean, VA
    4 days ago
  •  ...Department Summary: Do you want to develop software systems that contribute to solving our...  ...problems? Do you want to work alongside engineers and scientists that are experts in their...  ...Responsibilities: MITRE is seeking a Senior Software Engineer to design, build,... 
    Senior
    Work experience placement
    Internship
    Local area
    Immediate start

    The MITRE Corporation

    McLean, VA
    2 days ago
  •  ...Job Description Job Description ️ Build the Future of Data — Join Us as a Software Engineer! We’re a fast-moving technology company transforming how data powers decision-making. Our core platform fuels critical systems across industries — and we’re looking for a... 
    Senior

    Technology Company

    Fairfax, VA
    24 days ago

Do you want to receive more vacancies?

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