Leidos is seeking a versatile Full Stack Developer to join a mission‑driven team delivering modern, scalable software solutions that support critical operations. This role requires strong skills in C#/.NET, SQL development, and full‑stack engineering, with the ability to leverage both traditional code and low‑code capabilities through the Microsoft Power Platform.
We’re looking for someone who enjoys building end‑to‑end solutions — from database schema design to API development to intuitive user interfaces — while also applying Power Apps, Power Automate, and related tools to accelerate delivery and improve business outcomes.
Primary Responsibilities:
Design, develop, and maintain full stack applications using modern engineering practices.
Build and optimize relational database solutions using SQL Server, including stored procedures, functions, and performance tuning.
Develop and maintain RESTful APIs and backend services using C#/.NET.
Develop and maintain intuitive, responsive front-end interfaces using HTML, CSS, JavaScript, and modern interface frameworks.
Ensure applications meet security, performance, and scalability standards
Apply Power Platform tools (Power Apps, Power Automate, Power BI) to automate processes and extend application capabilities.
Collaborate with stakeholders to gather requirements, propose solutions, and iterate in an Agile environment.
Participate in code reviews, testing, and DevOps processes including CI/CD pipelines.
Troubleshoot, debug, and support deployed applications in production environments.
Basic Qualifications:
Bachelor’s degree (Computer Science, Engineering, or a related field), or equivalent experience.
U.S. Citizenship required; must be able to obtain and maintain Public Trust.
4+ years hands-on experience building full stack applications, including backend (e.g., C#, Java, or similar) and frontend (HTML/CSS/JavaScript).
Experience designing and working with relational databases.
Preferred Qualifications:
Experience with Power Platform tools: Power Apps (Canvas or Model-Driven), Power Automate, Power BI.
Familiarity with Microsoft Dataverse, SharePoint integration, or Azure services.
UX/UI design sensibility and ability to build user-friendly interfaces.
Experience integrating with REST APIs and handling JSON-based data workflows.
Strong SQL development experience, including optimization and complex query design.
Experience working in Agile teams and using version control systems like Git.
Experience with DevOps practices, CI/CD pipelines, and automated testing.
Knowledge of application lifecycle management (ALM) in both traditional and low-code environments.
AppMod
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:May 15, 2026For 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.
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.
Skills Required
- Bachelor's degree in Computer Science, Engineering, or related field or equivalent experience
- 4+ years hands-on experience building full stack applications
- Experience designing and working with relational databases
Leidos Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Leidos and has not been reviewed or approved by Leidos.
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Healthcare Strength — Healthcare coverage is described as comprehensive, with multiple plan options, low office-visit copays in some plans, and access to mental health and wellness support tools. The availability of HSA/FSA options and employer contributions is positioned as a meaningful part of the total package.
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Retirement Support — Retirement benefits are framed as a strong component of total rewards, highlighted by a 401(k) match and immediate vesting in the standard package. The Employee Stock Purchase Plan is also presented as an additional long-term wealth-building feature.
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Wellbeing & Lifestyle Benefits — Wellbeing and lifestyle supports extend beyond core insurance, including wellness programs, fitness-related stipends, and assistance resources. Work flexibility and related perks are also included as part of the broader rewards experience.
Leidos Insights
What We Do
We Are Leidos For 50 years we have been tackling some of the biggest problems that face our nation and our world. OUR MISSION Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020. Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®. Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos. Your most important work is ahead.
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