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19 network performance engineer jobs at 13 companies in Illinois

1mo
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Implementations/Activations Network Engineer II
Scott Air Force Base, Illinois, United States
$121k-$205k/yr OnsiteFull Time
BAE Systems
BAE SystemsLSE: BA.: Global defense, aerospace, and security technology.
2+ YOEPerform network activations and testing, manage service orders and TSOs, configure network devices, validate DISN requirements, and hold DoD-8570 IAT Level 2 certification; BS degree with 2–4 years experience required.
BGP, ISIS, DHCP, DNS, TCP/IP, WAN, VPN, VLAN, VRF, SharePoint
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2mo
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Network Telecom Engineer
Chicago, Illinois, United States
OnsiteFull Time
Humboldt Park Health
Humboldt Park Health: Nonprofit 200-bed acute care hospital serving Chicago’s West Side with patient-centered healthcare and community wellness programs.
5+ YOE5+ years experience administering LAN/WAN/VLAN networks, configuring and securing network systems, performing backups and disaster recovery, administering user accounts and VPN, and providing technical training and oversight.
LAN, WAN, VLAN, VPN, firewalls
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2mo
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Distinguished Engineer - Global Payment Network
McLean or Richmond or Plano or Riverwoods
$245k-$307k/yr OnsiteFull Time
Capital One
Capital OneNYSE: COF: A technology-driven bank providing diverse financial services.
7+ YOEBachelor's degree, 7+ years software engineering, 5+ years designing distributed systems and public cloud experience; strong coding experience in common languages; payments and high-performance systems experience preferred.
Java, Python, Go, JavaScript, TypeScript, Swift
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3w
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Distinguished Engineer - Global Payment Network
McLean or Richmond or Riverwoods or Dallas
$245k-$307k/yr OnsiteFull Time
Capital One
Capital OneNYSE: COF: A technology-driven bank providing diverse financial services.
7+ YOEBachelor's degree, 7+ years of software engineering, 5+ years designing distributed systems, and 5+ years with public cloud technologies. Strong expertise in performance, reliability, scalability, and operability required.
agentic AI, Java, Python, Go, JavaScript, TypeScript, Swift, PCI-DSS
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Product Engineer 1
Libertyville, Illinois, United States
HybridFull Time
AHEAD
AHEAD: AHEAD builds platforms and solutions for digital business.
3+ YOEImplement enterprise-level configurations; collaborate with cross-functional teams; perform power-on, firmware updates, OS images; document configurations; support quotes and customer needs.
Linux, Windows, Hypervisor, Automation, Networking, Storage, Dell, Supermicro, HPE, Lenovo, BOM, PLM, IP addressing, VLAN
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3w
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Senior iOS Engineer
Chicago or San Francisco
$150k-$210k/yr HybridFull Time
Brick
Brick: Private digital wellness making physical smartphone app-blocking devices and companion apps for consumers.
5+ YOE5+ years of professional iOS engineering experience with Swift; expertise in iOS architecture, SwiftUI, UIKit, concurrency, networking, persistence, performance, debugging, and collaborative technical leadership.
Swift, SwiftUI, UIKit, NFC, Bluetooth, websockets, ManagedSettings, BLE, Claude Code, Codex
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6d
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High-Performance Storage Architect, NVIS
California or Colorado or Illinois
$124k-$236k/yr RemoteFull Time
NVIDIA
NVIDIANASDAQ: NVDA: Computing platform for AI and accelerated graphics.
5+ YOERequires 5+ years supporting, deploying, and validating storage products; Linux administration, networking, scripting, and storage technology expertise; and a four-year technical degree or equivalent experience.
Linux, SDS, NFS, S3, NVMeoF, Lustre, GPFS, RMDA, RoCEv2, InfiniBand, FIO, IO500, IOR, HPL, NCCL, MLPerf, Bash, Python, Ansible, Ceph, Weka.io, Vast, DDN, Spectrum-X Ethernet, NVLink Switch
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6d
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High-Performance Storage Architect, NVIS
Santa Clara or Colorado or Illinois
$124k-$236k/yr RemoteFull Time
NVIDIA
NVIDIANASDAQ: NVDA: Computing platform for AI and accelerated graphics.
5+ YOERequires 5+ years supporting, deploying, and validating storage products; Linux administration, networking, scripting, storage technologies, customer support, and a four-year technical degree or equivalent experience.
Linux, SDS, NFS, S3, NVMeoF, Lustre, GPFS, RMDA, RoCEv2, InfiniBand, FIO, IO500, IOR, HPL, NCCL tests, MLPerf storage, Bash, Python, Ansible, Ceph, Weka.io, Vast, DDN, Spectrum-X Ethernet, NVLink Switch
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3w
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Senior iOS Engineer
San Francisco or Chicago
$150k-$210k/yr HybridFull Time
Brick
Brick: Private digital wellness making physical smartphone app-blocking devices and companion apps for consumers.
5+ YOERequires 5+ years of professional iOS experience, Swift expertise, iOS architecture, SwiftUI/UIKit, networking, concurrency, persistence, performance profiling, debugging, and strong collaboration skills.
Swift, SwiftUI, UIKit, NFC, Bluetooth, backend APIs, websockets, ManagedSettings framework, BLE, Accessibility Services, Claude Code, Codex
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Senior Systems Engineer
Chicago, Illinois, United States
OnsiteFull Time
VAST Data
VAST Data: The data platform for the AI era.
5+ YOE5+ years supporting enterprise storage sales to large IT organizations; knowledge of distributed storage, DAS/NAS/SAN, virtualization, high-performance networking, and enterprise security; strong presentation and communication skills; ability to work in unstructured environments.
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Platform Engineer Intern
Chicago, Illinois, United States
$175k/yr OnsiteInternship
DRW
DRW: Global proprietary trading firm investing across diverse asset classes.
Pursuing BS/MS/PhD in CS/EE/CE/physics/math or related; exposure to networking, Linux/Unix, systems performance, capacity planning, Kubernetes, Docker, CI/CD; scripting in Python and Bash; understanding of distributed systems.
Kubernetes, Docker, CI/CD, Python, Bash, Linux/Unix
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Research Engineer, Pre-Training
Chicago or London or New York City
$300k-$350k/yr OnsiteFull Time
Jump Trading
Jump Trading: Privately held proprietary trading firm using research and technology to trade global financial markets.
Expert in large-scale distributed training, HPC or distributed systems, GPUs/TPUs and high-performance networking, Python and PyTorch/JAX; published research and advanced degree (MS/PhD) or equivalent industry experience.
GPUs, TPUs, NVLink, InfiniBand, Kubernetes, Slurm, Python, PyTorch, JAX, CUDA, Triton, Pallas, CuTe, XLA, FPGA, ASIC
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Software Engineer | Market Data Systems
Chicago, Illinois, United States
$200k-$250k/yr OnsiteFull Time
Jump Trading
Jump Trading: Privately held proprietary trading firm using research and technology to trade global financial markets.
5+ YOE5+ years building production software in performance-critical environments; strong C++ and Rust experience; real-time streaming and low-latency systems expertise; concurrency, memory, and network programming skills.
C++, Rust, TCP, UDP, multicast, Linux
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Trading Strategy Software Engineer
Chicago, Illinois, United States
HybridFull Time
BlackEdge Capital
BlackEdge Capital: Private proprietary trading firm making markets in options and providing liquidity in financial markets.
Strong command of modern C++ for performance-critical, low-latency systems; deep OS/memory/concurrency knowledge; ability to co-design with FPGA hardware; collaborative communication skills. FPGA, kernel-bypass networking, ML, or market microstructure experience preferred.
C++, FPGA, HLS, ef_vi, OpenOnload, DPDK
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1mo
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Senior Software Developer (Shared Services)
Chicago, Illinois, United States
$160k/yr HybridFull Time
Eagle Seven
Eagle Seven: Privately held proprietary trading firm providing liquidity to global financial markets with its own capital.
5+ YOE5+ years building high-performance distributed systems, strong C++ experience, SQL/Postgres, Linux networking, and debugging/observability tools; BS in CS or related required.
C++, Postgress, GDB, Wireshark, tcpdump, Linux, Unix, SQL, TCP/IP, UDP, sockets
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3w
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HPC Middleware Developer
Santa Clara or Colorado or Illinois or Holmdel or California or Boulder
$152k-$288k/yr HybridFull Time
NVIDIA
NVIDIANASDAQ: NVDA: Computing platform for AI and accelerated graphics.
5+ YOERequires 5 years of C/C++ programming, 3 years in Linux environments and tools, networking protocol expertise, computer architecture and operating systems knowledge, performance optimization experience, and an MSc or equivalent experience.
C, C++, Linux, InfiniBand, Ethernet, MPI, RDMA
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2mo
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Senior Low Latency C++ Developer
New York or London or Chicago
$200k-$300k/yr OnsiteFull Time
Balyasny Asset Management
Balyasny Asset Management: Global multi-strategy investment firm.
Expert C++ (C++20/23), strong Python or Rust experience, solid algorithms/data-structures and distributed systems knowledge, networking and Linux systems programming, performance profiling, CI/CD familiarity, on-call participation.
C++, C++20, C++23, Python, Rust, TCP/UDP, multicast, Linux, FPGA, RDMA, Kubernetes, Docker, CI/CD
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4d
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Intern/Co-op - Refining Electrical Engineering (Fall 2027)
Findlay or El Paso or Anacortes or Wilmington or Martinez or Canton or Mandan or Salt Lake City or Robinson or Detroit or St. Paul Park or Catlettsburg or Garyville or Texas City or Kenai
$33-$42/hr OnsiteFull Time, Internship
Marathon
MarathonNew York Stock Exchange: MPC: Public U.S. downstream and midstream energy refining crude oil, transporting fuels, and marketing Marathon/AR products.
Electrical Engineering major with strong academic performance, current enrollment in a degree program, U.S. work authorization without sponsorship, and a valid driver's license.
Project Request Forms (PRF), electrical analysis software, control system programming, communication networks
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5d
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Intern/Co-op - Refining Electrical Engineering (Summer 2027)
Findlay or El Paso or Anacortes or Wilmington or Martinez or Canton or Mandan or Salt Lake City or Robinson or Detroit or St. Paul Park or Catlettsburg or Garyville or Texas City or Kenai
$33-$42/hr OnsiteFull Time, Internship
Marathon
MarathonNew York Stock Exchange: MPC: Public U.S. downstream and midstream energy refining crude oil, transporting fuels, and marketing Marathon/AR products.
Electrical Engineering major with strong academic performance, valid driver's license, US work authorization without sponsorship, enrollment in a degree program, and availability for multiple work terms preferred.
Project Request Forms (PRF), electrical analysis software, control system programming, communication networks
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