Middleware Modernization Engineer (Java/C++)

Gromelski & Associates, Inc.; Manassas (VA); On-site; USD 95,000 - 135,000; Full time

Benefits offered by this job

Relocation assistance

Job summary

Gromelski & Associates, Inc. (GAI) seeks a mid‑level Software Developer to migrate a legacy middleware stack to a modern open‑source solution (e.g., gRPC, NATS, DDS). You will evaluate performance, prototype technologies, and deliver a data‑driven production plan.

The role blends Java/C/C++ development with Linux work in a DoD‑sensitive setting. You will analyze bottlenecks, prototype candidates, and produce a comprehensive migration plan, while collaborating with software leads, systems

Qualifications

• 3+ years of Java and C/C++ development.
• Strong Linux/Unix administration and shell scripting.
• Proven experience with socket programming (TCP/UDP).
• Hands‑on experience with gRPC and Google Protocol Buffers.
• NATS messaging experience (publish/subscribe, request/reply).
• Familiarity with Gradle, CMake, Docker and Kubernetes.

Responsibilities

• Analyze the existing middleware stack, document performance bottlenecks, latency, throughput, and scalability requirements.
• Research and shortlist modern alternatives (gRPC, NATS, DDS), evaluating fit against criteria.
• Prototype selected solutions on target hardware, measuring latency and resource usage.
• Produce a comprehensive recommendation report with migration path and plan.
• Develop and integrate Java and C/C++ components in a Linux lab environment per DoD processes.
• Collaborate with team leads, systems engineers, and test personnel; communicate findings clearly.
• Document all work artifacts in accordance with CM standards.
• Support off-shift and overtime activities when required.

Skills

Java & C/C++

Linux admin

Socket programming

gRPC & Protobuf

NATS messaging

Education

Bachelor's degree in CS/EE

Tools

Gradle

CMake

Docker

Kubernetes

Job description

Gromelski & Associates, Inc. (GAI) seeks a mid‑level Software Developer to migrate a legacy middleware stack to a modern open‑source solution (e.g., gRPC, NATS, DDS). You will evaluate performance, prototype technologies, and deliver a data‑driven production plan.

The role blends Java/C/C++ development with Linux work in a DoD‑sensitive setting. You will analyze bottlenecks, prototype candidates, and produce a comprehensive migration plan, while collaborating with software leads, systems