System Performance Engineer Jobs In Mclean, Illinois - 351 Job Positions Available

Communications and Wireless Systems Engineer The Opportunity: Specializes in tools, techniques, systems, and procedures for developing, deploying, or analyzing wired or wireless transmission of signaling data. Applies advanced advisory skills or extensive technical expertise with full industry knowledge. Develops

SUMMARY: Under limited supervision, the Systems Engineer II responsible for the design and build of custom automation systems. The Systems Engineer II collaborates with other employees to provide follow-up and engineering assistance on defined problems. The Systems Engineer II effectively communicate system solutions, and

General information Requisition # R69645 Locations USA-VA-McLean Posting Date 07/29/2026 Security Clearance Required TS/SCI w/ Poly Remote Type Onsite Time Type Full time Description & Requirements Unlock the secrets of intelligence with MANTECH! Join a dynamic

Systems Engineer Department: Data Analysis and Technology Services Employment Type: Full Time Location: McLean, VA Compensation: $130,000 - $260,000 / year Description REQUIRED: Active TS/SCI with Full Scope Polygraph LOCATION: Full-time, onsite in McLean, VA Ardent Principles is

Information System Security Engineer The Opportunity: You will lead cybersecurity engineering efforts across the full system lifecycle for DoD collateral, SAP, and SCI environments. This role ensures security requirements are integrated into system architectures, designs, development, testing, and sustainment activities,

Systems Engineer Department: Data Analysis and Technology Services Employment Type: Full Time Location: McLean, VA Compensation: $130,000 - $260,000 / year Description REQUIRED: Active TS/SCI with Full Scope Polygraph LOCATION: Full-time, onsite, McLean, VA area We are seeking

Fuel System Engineer – Storage (Expert), McLean JOB DESCRIPTION Fuel is looking for a Storage Systems Engineer. The Storage Engineer will apply expertise to the full life cycle of storage area network (SAN) administration, architecture, and support. The engineer will be responsible

Amentum is seeking a highly experienced Senior Systems/Infrastructure Engineer with advanced technical expertise supporting complex enterprise environments to join our team and support our McLean, VA customer. We are looking for team members who are passionate about making

This position requires office presence of a minimum of 5 days per week and is only located at customers site. AT&T Global Public Sector is a trusted provider of secure, IP enabled, cloud-based, network solutions and

Lead Software Engineer, Full Stack Do you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive, and iterative delivery environment? At Capital One, youll be part

Lead Software Engineer, Full Stack (Golang, Python, GenAI) (Cloud Operations Resilience Engineering) If you love building, pioneering in the technology space, and solving complex business problems in a fast-paced, collaborative, and iterative environment, you will thrive at

Lead Software Engineer, Back End (Enterprise Platforms Technology) Do you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive, and iterative delivery environment? At Capital One,

Senior Lead AI Engineer (MLX, Agentic AI, Gen AI platform Services) Overview: At Capital One, we are creating responsible and reliable AI systems, changing banking for good. For years, Capital One has been an industry leader in using

DevOps Engineer The Opportunity: Are you looking for an opportunity to leverage your DevOps and Platform Engineering expertise in a high impact role? Booz Allen is building next generation of products in Cybersecurity. We’re modernizing systems with Artificial

Overview In today’s rapidly evolving technology landscape, an organization’s data has never been a more important aspect in achieving mission and business goals. Our data exploitation experts work with our clients to support their mission and

At Johnson & Johnson,we believe health is everything. Our strength in healthcare innovation empowers us to build aworld where complex diseases are prevented, treated, and cured,where treatments are smarter and less invasive, andsolutions are personal.Through our

Lead Software Engineer, Front End EPTech’s Enterprise Consumer Products team transforms customer experiences, and the platforms that enable them, at the optimal time through the preferred channel, to empower 100+ million customers on their financial journeys and

Lead Software Engineer Do you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive, and iterative delivery environment? At Capital One, youll be part of a

Lead Software Engineer (Go, AWS) Do you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive, and iterative delivery environment? At Capital One, youll be part