We are seeking an experienced Senior Software Engineer with a strong backend focus and full-stack capabilities to design, build, test and maintain scalable software systems. This role will play a key part in architecting backend services, developing APIs, and collaborating with development team to deliver reliable, high-performance applications.
The ideal candidate has deep experience in backend systems, cloud-native architectures, testing, and modern CI/CD practices and tools, while also being comfortable contributing across the full stack when needed.
Key Responsibilities:
Design and develop scalable backend services, APIs, and microservices.
Create and maintain full-scale testing architecture plans and system design for software application.
Build, test, and maintain high-performance, secure, and reliable applications.
Collaborate with product managers, designers, customers, and engineers to deliver new features.
Write clean, maintainable, well-tested code following best practices.
Review code and mentor junior engineers.
Optimize applications for performance, scalability, and reliability.
Support CI/CD pipelines and cloud infrastructure for application.
Participate in Agile ceremonies including sprint planning, standups, and retrospectives, and PI planning events.
Troubleshoot production issues and implement long-term solutions.
Functions as a technical expert across multiple project assignments.
Required Qualifications:
Bachelor’s degree in Computer Science, Software Engineering, related field, or equivalent experience.
4-8 years (or 2-6 years with Master’s Degree) of professional software development experience.
Strong backend development experience in languages such as:
Java
Spring Boot
Hibernate
Hibernate using native queries
Strong automated testing experience in end-to-end testing, regression testing, integration testing, etc
Experience building RESTful APIs and microservices architectures.
Strong knowledge of relational databases (PostgreSQL, MySQL, etc.)
Experience with cloud platforms such as AWS, Azure, or Google Cloud.
Experience with agile project management software such as Jira, Confluence, etc.
Familiarity with containerization technologies like Docker and Kubernetes.
Experience with version control systems such as Git.
Experience with CI/CD pipelines such as Gitlab.
Strong understanding of software architecture, design patterns, and system scalability.
Preferred Qualifications:
Experience with frontend frameworks (React, Angular, or Vue).
Knowledge of infrastructure-as-code tools (Terraform, CloudFormation).
Experience with observability tools (Datadog, Prometheus, Grafana).
Key Competencies:
Strong problem-solving and analytical thinking.
Passion for quality control and improving engineering practices.
Excellent communication and collaboration skills.
Ownership mindset and accountability for deliverables.
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:August 21, 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, Software Engineering, a related field, or equivalent experience
- 4-8 years of professional software development experience, or 2-6 years with a Master's degree
- Strong backend development experience with Java, Spring Boot, and Hibernate, including native queries
- Strong automated testing experience, including end-to-end, regression, and integration testing
- Experience building RESTful APIs and microservices architectures
- Strong knowledge of relational databases such as PostgreSQL and MySQL
- Experience with cloud platforms such as AWS, Azure, or Google Cloud
- Experience with Agile project management software such as Jira and Confluence
- Familiarity with Docker and Kubernetes
- Experience with version control systems such as Git
- Experience with CI/CD pipelines such as GitLab
- Strong understanding of software architecture, design patterns, and system scalability
- Experience with frontend frameworks such as React, Angular, or Vue
- Knowledge of infrastructure-as-code tools such as Terraform or CloudFormation
- Experience with observability tools such as Datadog, Prometheus, or Grafana
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.
