> Markdown version of [/jobs/ext/3732330-design-engineer-ii-in-seminole](https://www.wearedevelopers.com/jobs/ext/3732330-design-engineer-ii-in-seminole). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Design Engineer II in Seminole - **Company:** Energy Jobline - **Location:** Seminole, TX, United States - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** 3d Models, Computer-Aided Design, Microsoft Outlook, SolidWorks (CAD), Microsoft Office, Microsoft Project, Test Data, Autodesk Autocad - **Published:** October 14, 2026 - **Apply:** https://www.energyjobline.com/job/design-engineer-ii-seminole-31938567 ## About the Role * B.S. Degree in Mechanical Engineering, Aerospace Engineering, or a related field required. * 2 - 4 years of experience in developing aerospace environmental control system components and systems. * Experience with RTCA/DO-160 standards and awareness of aerospace Supplemental Type Certification (STC) process . * Proficiency with 3D modeling and drawing tools such as SolidWorks or AutoDesk; certification is a plus. * Working knowledge of CAD design and analysis tools. * Experience with environmental control systems and aerospace components. * Familiarity with aerospace industry standards and documentation practices. * Proficiency in MS Office suite, including MS Project and Outlook. * Ability to work onsite in Seminole, OK, and travel domestically and internationally up to 5%. * Strong problem-solving skills and attention to detail. * Effective communication and team collaboration skills. ## Description Job Title: Design Engineer II Location: Seminole, OK Type: Direct Hire Work Model: Onsite Responsibilities * Design new product and support all phases of the product lifecycle, including development, testing, and manufacturing. * Analyze customer requirements and develop engineering solutions to meet project specifications. * Prepare and review technical documentation, including drawings, test plans, and reports. * Support DFX efforts, focusing on design to cost, manufacturability, and reliability. * Conduct testing in research and development labs, and analyze test data to validate designs. * Communicate project status and technical issues effectively with stakeholders. * Assist in proposal preparation and customer presentations, interacting with clients and suppliers on technical matters. * Maintain proper documentation and project files in accordance with company guidelines. * Provide technical support to manufacturing, quality, and business development teams. * Make recommendations for design, process improvements, or cost reductions based on testing and analysis. * Support existing product lines and contribute to continuous improvement initiatives.