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Actalent

Middleware Software Engineer

On site

Manassas, United states

$ 90 /hour

Mid level

Freelance

26-01-2026

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Skills

Communication Java C/C++ CI/CD Docker Networking Research Architecture Linux Windows Programming Software Development C++ Gradle CI/CD Pipelines CMake gRPC

Job Specifications

Job title: Middleware Software Engineer

Job Description

We are seeking a skilled Software Engineer to join our team supporting mission-critical systems for Navy and DoD programs. This role focuses on designing and integrating high-performance software components in distributed environments using Java and C/C++ on Linux platforms.

Responsibilities

Design, develop, and integrate software components using Java and/or C/C++ in a Linux OS environment.
Implement and optimize Linux/Unix socket programming for high-performance communications.
Develop and integrate middleware technologies such as gRPC and Google Protocol Buffers.
Architect and implement publish-subscribe communication patterns for distributed systems.
Collaborate on computer networking tasks, including protocol design, diagnostics, and performance tuning.
Apply common design patterns in Java and C++ to ensure scalable and maintainable code.
Utilize containerization technologies (e.g., Docker) and build infrastructure tools such as Gradle and CMake.
Participate in research, whitepapers, system re-architecture planning, design reviews, and technical deep-dives with government and program stakeholders.

Essential Skills

Bachelor's degree in Computer Science or related field.
5+ years of experience in software development with C++ and/or Java.
Experience working in Linux environments and socket programming.
Experience with gRPC, Google Protocol Buffers, or related middleware frameworks.
Eligibility for Secret Clearance.

Additional Skills & Qualifications

Experience with publish-subscribe architectures and distributed systems.
Understanding of computer networking principles.
Experience with containerization and modern build systems (Gradle, CMake).
Prior experience supporting Navy or DoD programs.
Experience with legacy system modernization and system-of-systems integration.
Experience with CI/CD pipelines and DevSecOps practices.

Work Environment

This role will be 100% on-site at the secure lab facility in Manassas, VA. While the labs are secure, they feature windows for a pleasant working environment. Personal phones are not permitted within the labs.

Job Type & Location

This is a Contract position based out of Manassas, VA.

Pay And Benefits

The pay range for this position is $70.00 - $90.00/hr.

Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following:

Medical, dental & vision
Critical Illness, Accident, and Hospital
401(k) Retirement Plan – Pre-tax and Roth post-tax contributions available
Life Insurance (Voluntary Life & AD&D for the employee and dependents)
Short and long-term disability
Health Spending Account (HSA)
Transportation benefits
Employee Assistance Program
Time Off/Leave (PTO, Vacation or Sick Leave) Workplace Type This is a fully onsite position in Manassas,VA. Application Deadline This position is anticipated to close on Jan 30, 2026.

About Actalent

Actalent is a global leader in engineering and sciences services and talent solutions. We help visionary companies advance their engineering and science initiatives through access to specialized experts who drive scale, innovation and speed to market. With a network of almost 30,000 consultants and more than 4,500 clients across the U.S., Canada, Asia and Europe, Actalent serves many of the Fortune 500.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

If you would like to request a reasonable accommodation, such as the modification or adjustment of the job application process or interviewing due to a disability, please email actalentaccommodation@actalentservices.com for other accommodation options.

About the Company

Actalent is a global leader in engineering and sciences services and talent solutions. We help visionary companies advance their engineering and science initiatives through access to specialized experts who drive scale, innovation and speed to market. With a network of almost 30,000 consultants and more than 4,500 clients across the U.S., Canada, Asia and Europe, Actalent serves many of the Fortune 500.  Our expertise spans capabilities in engineering including product and manufacturing, systems and software, construction ma... Know more