Senior Software Engineer

Leidos; Clarksburg (MA); On-site; USD 131,000 - 237,000; Full time

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 involves architecting backend services, developing APIs, and collaborating with the development team to deliver reliable, high-performance applications.

You will work across modern CI/CD practices, cloud-native architectures, and testing, with opportunities to contribute on the full stack when needed.

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or related field, or equivalent experience.
• 12–15+ years (or 10–13 with Master's) of professional software development experience.
• Strong backend development experience in languages such as those used for backend services.

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 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 applications.
• Participate in Agile ceremonies including sprint planning, standups, retrospectives, and PI planning events.
• Troubleshoot production issues and implement long-term solutions.
• Functions as a technical expert across multiple project assignments.

Skills

RESTful APIs

Microservices

PostgreSQL

MySQL

AWS

Azure

Google Cloud

Jira

Confluence

Docker

Kubernetes

Git

GitLab

Software Architecture

Design Patterns

System Scalability

Frontend Frameworks

Terraform

CloudFormation

Datadog

Prometheus

Grafana

Education

Bachelor's degree in Computer Science or related field

Tools

Terraform

CloudFormation

Datadog

Prometheus

Grafana

Job description

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, 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.

• 12-15+ years (or 10-13 years with Master's Degree) of professional software development experience.

• Strong backend development experience in languages such as:

• 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.

Pay Range:

Pay Range $131,300.00 - $237,350.00

The Leidos pay range for this job level is a general guideline onlyand 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.