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

Senior Software Developer

$107.9k - $195.05k

Leidos

Description

We are seeking a Senior Software Developer who will be a member of a dynamic team Air Traffic Management program - SkyLine-X™

SkyLine-X™ provides an array of advanced air traffic management capabilities to improve aircraft safety, performance, and efficiency across the world’s airspace.

Primary Responsibilities:

  • Lead the design, development, and maintenance of software components and subsystems, operating as a senior technical contributor within a SW team
  • Drive technical planning, estimation, and architectural discussions, influencing design decisions and implementation strategies
  • Analyze system and subsystem requirements and develop robust, scalable software designs aligned with overall system architecture
  • Lead implementation of complex features and ensure alignment with performance, reliability, safety, and maintainability requirements
  • Define and implement effective use of AI-assisted development tools (e.g., Roo Code, Claude, ChatGPT, or similar) across the team to improve productivity and code quality
  • Establish guidelines and guardrails for responsible AI usage, including validation standards, traceability, security considerations, and compliance with program requirements
  • Exercise deep technical judgment in evaluating AI-generated outputs, identifying subtle defects, system-level impacts, performance tradeoffs, and potential failure modes
  • Drive adoption of standardized prompting strategies, reusable workflows, and AI-assisted development patterns across the team or program
  • Lead and perform code reviews, setting quality expectations for both human- and AI-generated code
  • Troubleshoot and resolve complex, system-level software issues, supporting integration, verification, and validation activities
  • Mentor junior and mid-level developers, including coaching on effective and responsible use of AI-assisted development tools
  • Contribute to continuous improvement of development processes, tooling, and engineering excellence, including integration of AI capabilities into CI/CD and testing workflows

Basic Qualifications:

  • Must be able to obtain and maintain a Public Trust security clearance (US Citizenship required)
  • Bachelor’s degree in computer science or a related field and a minimum of 8 years of prior relevant experience, or a master’s degree and a minimum of 6 years of prior relevant experience
  • Strong proficiency in programming languages such as C++, Python, or Qt, with significant experience developing, integrating, and maintaining production-quality systems
  • Demonstrated experience applying AI-assisted software development tools (e.g., GitHub Copilot, ChatGPT, Roo Code, or similar) in professional environments to improve team productivity and software quality
  • Advanced ability to evaluate, validate, and govern AI-generated code, including identifying complex logical errors, edge cases, performance concerns, and security vulnerabilities
  • Strong understanding of software architecture, design patterns, and system-level tradeoffs
  • Experience leading code reviews and establishing or enforcing team development standards
  • Ability to work independently on complex problems and provide technical leadership within a team
  • Strong communication skills, with the ability to clearly articulate technical decisions and mentor other engineers
  • Demonstrated experience improving team workflows, development processes, and tool chains, including adoption of AI-assisted techniques

Preferred Qualifications:

  • Experience defining or governing AI-assisted development practices at the team, program, or organizational level
  • Experience integrating AI tools into CI/CD pipelines, automated testing frameworks, or secure development environments
  • Familiarity with secure coding practices and validating AI-generated code in regulated, safety-critical, or mission-critical systems
  • Experience contributing to software architecture decisions or serving as a technical lead on a project or subsystem
  • Proven experience mentoring developers across multiple experience levels

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

June 8, 2026

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.

Pay Range:

Pay Range $107,900.00 - $195,050.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit .

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at .

Securing Your Data

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at View email address on apply.j-vers.com .

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission .

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Vacancy posted 23 minutes ago
Similar jobs that could be interesting for youBased on the Senior Software Developer in Gaithersburg, MD vacancy
  • $107.9k - $195.05k

     ...faster, better-informed decisions using trusted data at scale. Leidos Digital Modernization sector is seeking an experienced Senior Software Developer to support the delivery, enhancement, and adoption of enterprise data and analytics products used across multiple DoD... 
    Senior
    Local area
    Immediate start

    Leidos

    Gaithersburg, MD
    5 days ago
  • $107.9k - $195.05k

     ...faster, better-informed decisions using trusted data at scale. Leidos Digital Modernization sector is seeking an experienced Senior Software Developer to support the delivery, enhancement, and adoption of enterprise data and analytics products used across multiple DoD... 
    Senior

    Leidos

    Gaithersburg, MD
    2 days ago
  • A technology leader in Gaithersburg is seeking an experienced Software Developer to enhance and deliver enterprise data solutions. This role involves collaboration with cross-functional teams to translate requirements into scalable applications. Candidates should have... 
    Senior

    Leidos

    Gaithersburg, MD
    5 days ago
  • $150k - $160k

    Leidos is looking for a highly skilled Senior Salesforce Developer Architect to join their development team. This remote role involves designing and integrating crucial Salesforce solutions for CRM and other enterprise functions. The ideal candidate will possess over 8... 
    Senior
    Remote job

    Via Logic LLC

    Gaithersburg, MD
    1 day ago
  • $107.9k - $195.05k

     ...Leidos Digital Modernization sector is seeking an experienced Senior DevOps Engineer to support the delivery, enhancement, and adoption...  ...development, integration, testing, and deployment of WDP software. Implement Infrastructure-as-Code (IaC) and Configuration-as... 
    Senior
    Local area
    Immediate start

    Leidos

    Gaithersburg, MD
    12 hours ago
  • Eliassen Group is seeking two DevOps Software Engineers at the mid or senior level for a hybrid role in Gaithersburg, MD. Candidates will support Linux-centric platform engineering and automation focusing on full lifecycle system administration on Red Hat Enterprise Linux... 
    Senior

    Eliassen Group

    Gaithersburg, MD
    3 days ago
  • A defense technology company is seeking a Senior AI Integration Engineer in Gaithersburg, Maryland, to enhance enterprise data and analytics products within the Department of War. This role involves implementing AI solutions, designing APIs, and ensuring integration across... 
    Senior

    Leidos

    Gaithersburg, MD
    4 days ago
  • $92.3k - $166.85k

     ...Leidos Digital Modernization sector is seeking an experienced Senior ServiceNow Engineer to support the delivery, enhancement, and...  ...patching, configuration management, and performance tuning. Develop and maintain scripts and integrations using ServiceNow APIs and... 
    Senior
    Local area
    Immediate start

    Leidos

    Gaithersburg, MD
    3 days ago
  • Senior DevOps Engineer Location: St. Louis, MO; Chantilly, VA; Alexandria, VA; Gaithersburg, MD Clearance: TS/SCI required Required...  ...Experience diagnosing and resolving VPC connectivity issues Develop, update, and maintain GitLab CI/CD pipeline code Configure, troubleshoot... 
    Senior

    Bailey Information Technology Consultants, LLC

    Gaithersburg, MD
    2 days ago
  • Leidos is seeking a highly motivated Senior Software Engineer for the Chinook Program in Gaithersburg, Maryland. This role involves engaging in the full software development lifecycle, from architecture to automated testing, within an agile environment. The ideal candidate... 
    Senior

    Leidos

    Gaithersburg, MD
    2 days ago
  • A leading technology firm in Maryland is seeking a Senior Systems Engineer for the Chinook Program. The ideal candidate will excel in Databricks administration and AWS cloud services while working in a collaborative, mission-focused environment. Responsibilities include... 
    Senior

    Leidos

    Gaithersburg, MD
    4 days ago
  •  ...automating CI/CD processes while ensuring compliance and security. The role demands a Top Secret clearance and a strong background in software engineering and DevOps with over 10 years of relevant experience. Join a team dedicated to supporting crucial national security... 
    Senior

    Koitecc Solutions

    Gaithersburg, MD
    2 days ago
  • Koitecc Solutions is seeking an experienced Release Train Engineer to support mission‑critical data and analytics capabilities for the Department of War. This role involves leading Agile teams and ensuring efficient delivery of solutions aligned with mission priorities....
    Senior

    Koitecc Solutions

    Gaithersburg, MD
    3 days ago
  • Leidos LLC in Gaithersburg, MD is seeking a highly motivated Senior Software Engineer for the Chinook Program, focusing on mission-driven software for national security. Responsibilities include engaging in the software development lifecycle with a strong emphasis on Agile... 
    Senior

    Leidos LLC

    Gaithersburg, MD
    4 days ago
  • $131.3k - $237.35k

    A major defense contractor located in Gaithersburg, MD, is seeking an experienced SME DevOps Engineer to enhance enterprise data and analytics capabilities. The role requires leading CI/CD pipeline design and ensuring effective integration of security processes. Candidates...
    Senior
    For contractors

    Via Logic LLC

    Gaithersburg, MD
    2 days ago
  •  ...Gaithersburg, Maryland. This position requires an active TS/SCI clearance and a strong background in systems engineering. You will develop enterprise system designs, manage Cloud Service Provider environments, and ensure compliance with cybersecurity mandates. Candidates... 
    Senior

    Leidos

    Gaithersburg, MD
    2 days ago
  • TryApplyNow is seeking a Senior Cloud Operations Engineer to support the delivery and enhancement of enterprise data and analytics products. This role involves managing cloud infrastructure across AWS, GCP, or Azure and implementing Infrastructure as Code. The ideal candidate... 
    Senior

    TryApplyNow

    Gaithersburg, MD
    1 day ago
  • Bailey Information Technology Consultants, LLC is looking for a Senior DevOps Engineer with strong Continuous Integration/Continuous Delivery (CI/CD) experience. This role involves developing, integrating, deploying, and sustaining mission-critical systems across AWS environments... 
    Senior

    Bailey Information Technology Consultants, LLC

    Gaithersburg, MD
    2 days ago
  • Koitecc Solutions in Gaithersburg, MD is seeking an experienced SME Software Developer for a mission-critical analytics program. This role focuses on delivering and enhancing data solutions across multiple DoD organizations and involves direct collaboration with government... 
    Senior

    Koitecc Solutions

    Gaithersburg, MD
    2 days ago
  • Leidos is seeking an experienced SME AI/ML Engineer to support critical data and analytics programs aimed at enhancing decision-making for the Department of War. This role involves designing and optimizing AI solutions, ensuring their integration into production environments...
    Senior

    Leidos

    Gaithersburg, MD
    5 days ago
  •  ...Senior Technical Lead The Senior Technical Lead serves as a senior technical authority and strategic advisor, owning the most complex...  ...and non-technical stakeholders. Ability to mentor and develop other Technical Leads, elevating team capability and reinforcing... 
    Senior
    For contractors
    Work at office
    Local area

    Doyon Government Group

    Gaithersburg, MD
    1 day ago
  • $107.9k - $195.05k

     ...Leidos Digital Modernization sector is seeking an experienced Senior DevOps Engineer to support the delivery, enhancement, and adoption...  ...development, integration, testing, and deployment of WDP software. Implement Infrastructure-as-Code (IaC) and Configuration-as-Code... 
    Senior

    Via Logic LLC

    Gaithersburg, MD
    15 hours ago
  • $82.55k - $149.23k

    Leidos Inc is seeking an experienced Release Train Engineer in Gaithersburg, Maryland to oversee Agile processes and enhance enterprise data and analytics products for DoD organizations. The role involves coordinating teams, managing program risks, and ensuring agile execution...
    Senior

    Leidos Inc

    Gaithersburg, MD
    1 day ago
  •  ...Modernization sector is seeking an experienced Senior Cloud Operations Engineer to support the...  ..., cybersecurity, data engineering, and software development teams to support integrated...  ...operational troubleshooting activities. Develop and maintain operational documentation, runbooks... 
    Senior

    Koitecc Solutions

    Gaithersburg, MD
    3 days ago
  • $131.3k - $237.35k

    Leidos is seeking an experienced SME Cloud Operations Engineer in Gaithersburg, Maryland to support mission-critical data and analytics capabilities. This role involves collaborating with government partners to deliver scalable solutions while ensuring compliance with NIST...
    Senior

    Leidos

    Gaithersburg, MD
    1 day ago
  • $140k - $165k

    Australia-Employment is seeking a Senior Software Engineer in Gaithersburg, MD, to design and develop complex software systems. The role offers a competitive salary between $140,000 and $165,000 yearly, emphasizing strong Linux and automation skills. Ideal candidates should... 
    Senior

    Australia-Employment

    Gaithersburg, MD
    3 days ago
  • $100k - $120k

    A leading online marketplace in Montgomery Village is seeking a Magento Developer to lead technical initiatives and manage external teams. The ideal candidate will perform hands-on Magento development while ensuring the platform's performance and scalability. Responsibilities... 
    Senior

    Medium

    Montgomery Village, MD
    5 days ago
  • $107.9k - $195.05k

     ...Modernization sector is seeking an experienced Senior AI/ML Engineer to support the delivery,...  ...Responsibilities: Design, develop, and optimize AI and ML solutions to enhance...  ...with data engineers, data scientists, software developers, and DevSecOps teams to ensure... 
    Senior
    Local area
    Immediate start

    Leidos

    Gaithersburg, MD
    5 days ago
  • $85.39k - $116.98k

     ...Syms Strategic Group, LLC is searching for a Senior Software Systems Engineer (.Net Developer) to join their team remotely. This role involves technical planning, software systems integration, and software development using .Net technologies. The ideal candidate will... 
    Senior
    Remote work

    Syms Strategic Group, LLC

    Rockville, MD
    13 hours ago
  •  ...Syms Strategic Group, LLC is seeking a talented Senior Software Systems Engineer (.Net Developer) to join their team in Rockville, Maryland. The position is remote and requires extensive experience in .Net development, including both front and back-end applications. You... 
    Senior
    Remote work

    Syms Strategic Group, LLC

    Rockville, MD
    13 hours ago

Do you want to receive more vacancies?

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