CareerPlanSign in

Software Engineer, Level III

USA💼 Full-time🗓 2026-09-02 → 2026-10-02

Core

Architecting classified software systems, data platforms, and ML strategies for Army testing and simulation environments.

Role type

Senior IC Software Architect / Lead Engineer

Builds

Classified software applications, data pipelines, and ML models for defense testing

Domain

Defense / Military Simulation / Data Engineering

Required skills

Software architecture, C#, Python, Angular, GitLab CI/CD, REST API design, DevSecOps, STIG compliance, SQL, ETL/ELT, statistical modeling, machine learning, NLP, MLOps

Preferred skills

Zero-trust architecture, classified-enclave deployment, shared design systems, multi-domain data platforms

Technologies

C#, Python, Angular, GitLab, SQL, AWS, Azure, Databricks, Snowflake, Linux, Windows (via careerplan.io/jobs/16689-software-engineer-level-iii-at-seneca-holdings)

Responsibilities

Set technical direction and resolve cross-baseline architectural issues; Lead software integration and installation-package quality; Own shared user-interface architecture and front-end performance; Design and govern classified delivery pipelines and security workflows; Review junior engineers' work and maintain development-environment compatibility; Architect test-data collection, modeling, and cross-domain movement; Define ML strategies and model-validation approaches; Define cloud, network, and security architecture for hybrid services.

Seniority

Senior, hands-on IC with mentorship