Mission-Critical Software Engineer (Java/Scala/C++)

Fusion Innovation; Chantilly (VA); On-site; USD 90,000 - 130,000; Full time

Job summary

Fusion Innovation seeks a Software Developer to design, develop, and support mission-critical information systems in distributed environments worldwide, focusing on reliable Java, Scala, and C/C++ services. The role collaborates with network operations, infrastructure, and field engineering teams to sustain high system availability.

Key responsibilities include building production services, documenting interfaces, and implementing CI/CD pipelines with GitLab.

Qualifications

• Experience designing, developing, and supporting distributed Java/Scala/C/C++ services.
• Ability to collaborate with network operations, infrastructure, and field engineering teams.
• Experience with automated delivery, testing, and production support.

Responsibilities

• Develop, enhance, and sustain production services and components written in Java and C/C++.
• Create and maintain interface documentation, including schemas, service contracts, and versioning strategies, and support integration testing.
• Participate in on-call rotations and operational support escalations as required.
• Collaborate with network operations, infrastructure, and field engineering teams to diagnose end-to-end failures across distributed environments.
• Develop and maintain build and deployment automation using GitLab CI/CD.
• Write and maintain unit, integration, and regression tests for critical services and interfaces.
• Follow configuration management, release management, and change-control practices required for distributed production systems.
• Rapidly troubleshoot and resolve software discrepancies to maximize system availability.
• Produce clear technical documentation, design notes, implementation plans, and operational runbooks.

Skills

Java

C/C++

Scala

CI/CD

Unit testing

Tools

GitLab

Job description

Fusion Innovation seeks a Software Developer to design, develop, and support mission-critical information systems in distributed environments worldwide, focusing on reliable Java, Scala, and C/C++ services. The role collaborates with network operations, infrastructure, and field engineering teams to sustain high system availability.

Key responsibilities include building production services, documenting interfaces, and implementing CI/CD pipelines with GitLab.