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Software Developer – Middleware Modernization (Mid Level) – Manassas, VA

Gromelski & Associates
🇺🇸 United States
Mid level
2 days ago
$130,000 – $190,000
  • Integration Testing
  • gRPC
  • NATS
  • Java
  • C++
  • Linux
  • Configuration Management
  • Unix
  • TCP
  • UDP
  • Protocol Buffers
  • Gradle
  • CMake
  • Docker
  • OCI
  • Pub/Sub
  • TCP/IP
  • QoS
  • Kubernetes
  • CI/CD
2 days ago
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Software Developer – Middleware Modernization (Mid‑Level) – Manassas, VA

 

Gromelski and Associates, Inc. (GAI) partners with prime contractors to provide professional services. Key service areas include Engineering Design and Documentation; Software Development and Testing; System Integration, Testing and Evaluation; Lab Management and Field Installation; Integrated Logistics Support, Training Development and Delivery, Multimedia Support, and Technical System Support.

 

 

Software Developer – Middleware Modernization Job Description:

 

Gromelski & Associates is seeking a skilledSoftware Developer to lead the evaluation and migration of a legacy middleware platform to a modern, open‑source solution (e.g., gRPC, NATS, DDS). You will assess performance requirements, explore viable alternatives, prototype candidate technologies, and deliver a data‑driven recommendation for production implementation. This role blends deep Java/C/C++ expertise with hands‑on Linux system work in a DoD‑sensitive environment.

 

Software Developer – Middleware Modernization Key Responsibilities:

#

Responsibility

1

Analyze the existing middleware stack, document performance bottlenecks, latency, throughput, and scalability requirements.

2

 

Research and shortlist modern alternatives (gRPC, NATS, DDS, etc.), evaluating fit against functional and non‑functional criteria.

3

 

Prototype selected solutions on target hardware, measuring latency, CPU/memory usage, and integration effort.

4

 

Produce a comprehensive recommendation report, including migration path, risk assessment, and implementation plan.

5

 

Develop and integrate Java and C/C++ components in a Linux‑based laboratory environment, following established DoD processes (installation, recovery, checkout, testing).

6

Collaborate closely with software team leads, systems engineers, and test personnel; communicate findings clearly and promptly.

7

 

Document all work artifacts (designs, test results, build scripts, deployment guides) in accordance with configuration‑management standards.

8

 

Support off‑shift and overtime activities when required to meet critical milestones.

 

Software Developer – Middleware Modernization Required Qualifications & Skills:

Category

Details

Technical Expertise

• 3+ years of professional experience inJava andC/C++ development.
• StrongLinux/Unix system administration and shell‑scripting.
• Proven experience withsocket programming (TCP/UDP, Unix domain sockets).

Middleware & Messaging

• Hands‑on experience withgRPC andGoogle Protocol Buffers.

 

•NATS messaging system experience (publish/subscribe, request/reply, streaming, JetStream, clustering).
• Exposure toDDS or similar data‑distribution middleware is a plus.

Software Integration

 

• Laboratory‑environment integration, hardware‑in‑the‑loop testing, and troubleshooting.
• Ability to follow and execute detailed procedures (installation, recovery, checkout, test).

Development Infrastructure

 

• Familiarity with modern build tools –Gradle,CMake, and containerization (Docker, OCI).
• Knowledge of common design patterns in Java and C++.

 

 

Education & Clearance

• Bachelor’s degree in Computer Science, Software/Computer Engineering, Electrical Engineering, or a related field (or equivalent experience).
• Ability to obtain and maintain aDoD Secret Clearance (U.S. citizenship required).

Professional Traits

 

• Self‑motivated, task‑driven, and able to work independently.
• Strong team player who takes ownership and cultivates collaborative relationships.
• Flexible schedule with willingness to work overtime or off‑shift as needed.

 

Software Developer – Middleware Modernization Highly Desirable (Preferred) Skills:

 

  • AdvancedLinux/Unix socket programming and low‑level networking.
  • Experience designingpub/sub communication patterns and event‑driven architectures.
  • Familiarity withcomputer networking protocols (TCP/IP, QoS, multicast).
  • Exposure tocontainer orchestration (Kubernetes, Docker Swarm) and CI/CD pipelines.
  • Prior work withinDoD/Defense or other high‑security environments.

 

Ready to modernize legacy middleware and shape the next generation of mission‑critical communications?
Apply today and bring your expertise inJava, C/C++, Linux, gRPC, and NATS to a dynamic, security‑focused team!

Job: Full-Time Employee, 40 hours/week 

Benefits:   We offer a competitive benefit package. 
Click hereCareers | GAI (e-gai.com) for more information.

Salary Range:$130,000 - $190,000

Start Date: Negotiable 

Job Location:  Manassas, VA. (Relocation Assistance Available) 

Gromelski and Associates is an equal opportunity employer and does not discriminate in employment on the basis of race, color, religion, sex, pregnancy, national origin, political affiliation, sexual orientation, marital status, disability, genetic information, age, membership in an employee organization, retaliation, parental status, military service or other non-merit factor.

 

Software Developer – Middleware Modernization (Mid Level) – Manassas, VA · Gromelski & Associates

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