Senior Java Backend Engineer - Scalable Microservices

Leidos LLC; Clarksburg (WV); On-site; USD 87,000 - 157,000; Full time

Benefits offered by this job

Health & Wellness programs

Retirement plan

Job summary

Leidos is seeking an experienced Senior Software Engineer with a strong backend focus and full-stack capabilities to design, build, test and maintain scalable software systems. The role emphasizes architecting backend services, developing APIs, and collaborating with cross‑functional teams to deliver reliable, high‑performance applications.

The ideal candidate has deep experience in backend systems, cloud-native architectures, testing, and modern CI/CD practices, with comfort contributing across

Qualifications

• Bachelor’s degree in Computer Science, Software Engineering, related field, or equivalent experience.
• 4–8 years (or 2–6 with Master’s) of professional software development experience.
• Experience building RESTful APIs and microservices architectures.
• Strong knowledge of relational databases (PostgreSQL, MySQL).
• Experience with cloud platforms such as AWS, Azure, or Google Cloud.
• Familiarity with containerization technologies like Docker and Kubernetes.
• Experience with CI/CD pipelines and GitLab.

Responsibilities

• Design and develop scalable backend services, APIs, and microservices.
• Create and maintain testing architecture plans and system design for software applications.
• Build, test, and maintain high-performance, secure, and reliable applications.
• Collaborate with product managers, designers, customers, and engineers to deliver features.
• Write clean, maintainable, well-tested code following best practices.
• Review code and mentor junior engineers.
• Support CI/CD pipelines and cloud infrastructure.

Skills

Backend development

RESTful APIs

Java Spring Boot

Cloud platforms

CI/CD

Docker/Kubernetes

Education

Bachelor’s degree in CS/SE or related field

Tools

Jira

Confluence

Job description

Leidos is seeking an experienced Senior Software Engineer with a strong backend focus and full-stack capabilities to design, build, test and maintain scalable software systems. The role emphasizes architecting backend services, developing APIs, and collaborating with cross‑functional teams to deliver reliable, high‑performance applications.

The ideal candidate has deep experience in backend systems, cloud-native architectures, testing, and modern CI/CD practices, with comfort contributing across