Senior Back-End Software Engineer

Job Description

Position Overview

The TSG Back-End Software Engineer will be responsible for architecting and developing mission-critical backend applications, microservices, and data platforms that support defense operations and advanced analytics. The engineer will work closely with software, data, and systems engineers to deliver secure, scalable solutions using modern development practices, containerized environments, and automated CI/CD pipelines. This position requires strong expertise in Python and C/C++, database design, API development, and secure software engineering principles.

The position resides within Sigmatech's Technical Solutions Group (TSG), supporting the development and delivery of customer-focused technical solutions across defense programs. In addition to project work, the selected candidate will have the opportunity to contribute to Sigmatech's Internal Research and Development (IRAD) initiatives, led by the Chief Technology Officer (CTO). This unique combination provides exposure to both mission execution and technology innovation, allowing engineers to influence emerging capabilities, prototype advanced solutions, and contribute directly to the company's long-term technical strategy.

Essential Duties And Responsibilities

• Build and maintain backend application components
• Develop software using Python and C/C++
• Design and optimize relational and NoSQL databases
• Integrate applications with external systems and data sources
• Implement secure coding practices in accordance with DoD cybersecurity requirements
• Support CI/CD pipelines and automated testing frameworks
• Troubleshoot software defects and performance issues
• Create technical documentation, design artifacts, and software release packages

Required Experience

Required Qualifications

• Bachelor's degree in Computer Science, Software Engineering, Computer Engineering, or related field
• 5+ years of software development experience

• Experience with:

• Python and C/C++

• SQL databases (PostgreSQL, SQL Server, Oracle)

• Git version control

• Linux environments

• Unit, integration, and system testing frameworks and practices

• Security+ certification (or ability to obtain within 6 months)

Preferred Qualifications

• Active Secret or TS clearance

• Experience with:

• Kubernetes

• Docker containers

• Terraform or Infrastructure as Code

• C# and Typescript

• Firmware or embedded environment

• Bazel or similar build system

• Experience supporting Army, Air Force, Space Force, or C5ISR programs

Desired Characteristics

• Strong problem-solving skills
• Ability to work in cross-functional engineering teams
• Excellent written and verbal communication skills
• Experience working directly with government customers

Keyword: Developer