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LeidosLE

Mid Level Software Developer

Leidos is an American defense, aviation, information technology, and biomedical research company that provides scientific, engineering, systems integration, and technical services to government and commercial customers.

Leidos

Employee count: 5000+

Salary: 87k-157k USD

United States only

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Experienced full‑stack developer needed to design, implement, and sustain mission‑focused web applications for defense customers. You will deliver robust backend services in .NET, craft responsive front‑end experiences with Vue.js, and design/optimize SQL Server databases. Work is performed within disciplined SDLC, change‑control, and secure delivery processes supporting deployed systems and field users.

This position can be worked remote, but strong preference will be given to candidates local to Newport News, VA

Key responsibilities

  • Design and implement backend APIs and services using C# (.NET Core / ASP.NET) that meet performance, reliability, and security requirements.
  • Develop responsive, component‑based UIs with Vue.js, Nuxt, Tailwind and other modern tooling.
  • Design, optimize, and maintain SQL Server schemas, stored procedures, indexes, and query performance.
  • Integrate applications with authentication/authorization systems (OAuth2/JWT, SAML) and external services.
  • Produce clear technical documentation, and deployment artifacts for controlled and/or air‑gapped environments.
  • Participate in code reviews and bug triage. Mentor junior engineers and coordinate knowledge transfer.
  • Collaborate with product, QA, and systems teams to meet contract milestones and accreditation needs.

Required qualifications

  • Bachelor’s Degree with 4–6 years professional software development experience with demonstrable work in full‑stack projects. 4 additional years of experience in lieu of degree
  • U.S. citizenship and ability to obtain/maintain a TS/SCI clearance
  • Strong proficiency in C# and .NET Core / ASP.NET development.
  • Practical experience building front ends with Vue.js (or comparable modern JS/TS frameworks) and modern front‑end tooling.
  • Solid experience with SQL and relational database design.
  • Familiarity with RESTful API design, HTTP, JSON, and authentication patterns (Open API/Swagger).
  • Experience with Git and collaborative development workflows, branching, and pull requests.
  • Strong debugging, problem‑solving, and communication skills; ability to work within structured, audited processes.

Preferred qualifications

  • Experience with Microsoft SQL Server: schema design, T‑SQL, procedures, performance tuning.
  • Exposure to CI/CD and DevSecOps toolchains (Azure DevOps, GitLab CI, automated test suites).
  • Experience with TypeScript, unit/integration testing frameworks, and front‑end component libraries.
  • Experience packaging and deploying software into constrained or air‑gapped environments.
  • Familiarity with performance and load testing tools and practices.
  • Experience mentoring or leading small engineering teams and supporting junior staff growth.

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:

October 8, 2025

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 $87,100.00 - $157,450.00

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 the job

Apply before

Posted on

Job type

Full Time

Experience level

Mid-level

Salary

Salary: 87k-157k USD

Location requirements

Hiring timezones

United States +/- 0 hours

About Leidos

Learn more about Leidos and their company culture.

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Leidos' story begins in 1969 when Dr. J. Robert Beyster, a visionary scientist, founded Science Applications Incorporated (SAI) in La Jolla, San Diego, California. With a modest investment and a powerful idea, Dr. Beyster embarked on a journey to apply scientific expertise to solve complex problems. The company's early days were marked by a focus on research and engineering, tackling challenges for various government and commercial clients. One of its initial significant projects involved studying radiation-based cancer therapy for the Los Alamos National Laboratory, which laid the groundwork for Leidos' future health business. SAI soon expanded its reach, opening an office in Albuquerque to support the Air Force Weapons Laboratory's work on electromagnetic phenomena, a precursor to the company's Physical Science Group.

Throughout the 1980s, the company, then known as Science Applications International Corporation (SAIC), strategically shifted its focus towards national security and defense, solidifying its position as a key government services provider. This era set the stage for substantial growth and diversification. The 1990s saw SAIC continue to expand its offerings and international presence, securing its first major global contract with the Kuwaiti Defense Forces. A pivotal moment arrived in 2013 when SAIC underwent a significant transformation, splitting into two independent, publicly traded companies: a new company retaining the SAIC name and the original company, which was rebranded as Leidos (a name derived from 'kaleidoscope'). Leidos, as the legal successor to the original SAIC, inherited its pre-2013 stock price and corporate filing history and established its new headquarters in Reston, Virginia. This strategic move allowed Leidos to sharpen its focus on national security, health, and engineering solutions. Another major milestone occurred in August 2016 when Leidos merged with Lockheed Martin's Information Systems & Global Solutions (IS&GS) business, a landmark transaction that created the defense industry's largest IT services provider and significantly expanded Leidos' capabilities and market share. Today, Leidos stands as a Fortune 500® global science and technology leader, employing approximately 47,000 people worldwide and generating billions in annual revenue, committed to making the world safer, healthier, and more efficient through innovation and technology.

Employee benefits

Learn about the employee benefits and perks provided at Leidos.

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Paid sick days

Leidos offers paid sick days.

Health Insurance

Leidos offers health insurance.

Dental Insurance

Leidos offers dental insurance.

Vision Insurance

Leidos offers vision insurance.

View Leidos's employee benefits
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Leidos

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Leidos hiring Mid Level Software Developer • Remote (Work from Home) | Himalayas