Senior Systems Engineer

Apex Tk; Huntsville (AL); Hybrid; USD 120,000 - 170,000; Full time

Job summary

Apex TK is seeking a Senior Systems Engineer to lead digital ecosystem design, cloud architecture, and MBSE for DoD programs. You will coordinate API integrations, AI-enabled workflows, and secure data exchange across enterprise environments.

The role involves developing AI-ready data pipelines, integrating LLMs and AI frameworks, and delivering enterprise dashboards. A strong background in MBSE, SysML, cloud tech, and DoD experience is essential.

Qualifications

• MS in a STEM field required.
• 12+ years of related experience in software integration, systems engineering, or enterprise architecture.
• Experience with API design and integration.
• Working knowledge of MBSE and SysML.
• Experience building enterprise dashboards.
• Experience with cloud environments and container technologies.
• Active or Interim Secret clearance required.

Responsibilities

• Coordinate and accelerate delivery of operational capabilities using API integration, cloud architecture, and digital engineering.
• Lead onboarding and integration of external software, models, simulations, AI tools, and operational capabilities.
• Design and implement secure API-based integrations and data exchange architectures.
• Design and implement AI-enabled digital ecosystems supporting human-machine teamwork.
• Develop integration architectures linking APIs, data services, semantic layers, and AI orchestration frameworks.
• Implement semantic data models and ontologies to improve AI reasoning and data discoverability.
• Develop AI-ready data pipelines transforming structured and unstructured data into knowledge assets.
• Integrate LLMs, agentic AI frameworks, and workflow automation into enterprise environments.
• Develop enterprise dashboards and common operational pictures.
• Support MBSE activities using SysML diagrams and block diagrams.
• Develop common data models and integration standards.
• Support tactical interoperability including Link 16 and gateway architectures.
• Support DevSecOps pipelines and cloud-native deployments.
• Provide technical recommendations to government leadership.

Skills

API design & integration

MBSE & SysML

Enterprise dashboards

Cloud environments & containers

Security clearance

12+ years experience

Education

MS in STEM

Tools

Cameo

MagicDraw

Sparx EA

Rhapsody

Kubernetes

GitLab

Terraform

CI/CD

Job description

General Overview

APEX TK is looking for an amazingly talented Senior Systems Engineer to join our team! In this role you will get to provide digital ecosystem, cloud architecture, and Model-based System Engineering expertise in support of the Missile Defense Agency Chief Digital Officer (CDO) mission.

What You'll Be Doing:

• Able to combine expertise in API integration, cloud architecture, model-based systems engineering, dashboard development, DevSecOps, tactical interoperability, and digital engineering to coordinate and accelerate delivery of operational capabilities.
• Lead onboarding and integration of external software, models, simulations, AI tools, and operational capabilities.
• Design and implement secure API-based integrations and data exchange architectures.
• Design and implement AI-enabled digital ecosystems supporting human-machine teaming.
• Develop integration architectures connecting APIs, data services, semantic layers, knowledge graphs, and AI orchestration frameworks.
• Implement semantic data models and ontologies to improve AI reasoning and data discoverability.
• Develop AI-ready data pipelines that transform structured and unstructured data into consumable knowledge assets.
• Integrate Large Language Models (LLMs), agentic AI frameworks, and workflow automation services into enterprise environments.
• Develop enterprise dashboards and common operational pictures.
• Support MBSE activities using SysML, activity diagrams, and block diagrams.
• Develop common data models and integration standards.
• Support tactical interoperability including Link 16 and gateway architectures.
• Support DevSecOps pipelines and cloud-native deployments.
• Provide technical recommendations to government leadership.

What Required Skills You'll Bring:

• MS in STEM field.
• 12+ years related experience in software integration, systems engineering, or enterprise architecture.
• Experience with API design and integration.
• Working knowledge of MBSE and SysML.
• Experience building enterprise dashboards.
• Experience with cloud environments and container technologies.
• Active or Interim Secret clearance.

What Desired Skills You'll Bring:

• Experience supporting DoD programs.
• Experience with Cameo, MagicDraw, Sparx EA, or Rhapsody.
• Experience with Power BI, Tableau, Grafana, or Kibana.
• Experience with Kubernetes, GitLab, Terraform, and CI/CD pipelines.
• Knowledge of Link 16, tactical data links, and C2 architectures.
• Knowledge of AI-enabled workflows and digital engineering ecosystems to include Semantic Search, RAG Architectures, LLM Integration, Agentic AI Frameworks, AI Orchestration Platforms, and Data Fabric Architectures.