17 offensive security jobs at 15 companies in Illinois

4w
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Lead, Offensive Security
Louisville or New York City or Dallas or Charlotte or Tampa or Miami or Washington or Chicago or Boston or Atlanta or Nashville
$142k-$196k/yr RemoteFull Time
Humana
HumanaNYSE: HUM: Provides health insurance plans and clinical healthcare services.
6+ YOE6+ Mgmt6+ years in red team/penetration testing with leadership experience; production Python engineering; built or operated agentic AI/LLM applications; experience attacking AI/ML systems; production cloud experience (AWS, GCP, or Azure).
Python, PyRIT, Garak, MITRE ATLAS, OWASP Top 10 for LLM Applications, NIST AI Risk Management Framework, AWS, GCP, Azure, Hack The Box Pro Labs
1mo
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WebApp Offensive Security Engineer
United States or Chicago
$196k-$242k/yr RemoteFull Time
Horizon3.ai
Horizon3.ai: Autonomous penetration testing platform for continuous security assessment.
Extensive hands-on web application penetration testing experience, ability to reproduce and validate edge-case exploits, strong communication, proxy tool experience (Burp Suite), scripting (Python), and history of security research or bug bounty contributions.
NodeZero, Burp Suite, Python, Nuclei, sqlmap, LangChain, LangFlow, Postgres, Neo4j, Jira, Model Context Protocol (MCP)
2mo
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Security Engineer
Chicago, Illinois, United States
$145k-$195k/yr OnsiteFull Time
Coinflow
Coinflow: Enables instant global payments using stablecoins and blockchain technology.
4+ YOE4+ years in security engineering or DevSecOps; hands-on offensive and defensive security; SIEM; code experience in TS/Node; vulnerability management; AI-native tooling.
Datadog, Splunk, Elastic, Panther, TypeScript, Node.js, Rust, Go, Python, Claude Security, Claude Code, SAST, DAST, CI/CD
1mo
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Senior Product Security Engineer II
United States or California or New York or Connecticut or New Jersey or Washington or Oregon or Delaware or Maine or Massachusetts or Maryland or New Hampshire or Rhode Island or Vermont or District of Columbia or Pennsylvania or Virginia or Colorado or Texas or Illinois or Hawaii or Canada
$192k-$243k/yr RemoteFull Time
Instacart
InstacartNasdaq: CART: Provides grocery delivery and retail technology solutions.
37+ YOEExperienced security engineer/penetration tester able to design and run offensive security engagements, conduct threat modeling and assessments, prioritize security initiatives, and create technical documentation for cross-functional teams.
3mo
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Sr. Info Security Specialist
Chicago, Illinois, United States
$122k-$157k/yr OnsiteFull Time
Cboe
CboeBATS: CBOE: Operates global market infrastructure and provides tradable financial products.
5+ YOE5+ years red teaming or offensive security; bachelor’s degree or equivalent; strong attacker tradecraft; hands-on in endpoint, identity, cloud; knowledge of EDR, SIEM; purple team; communications.
Python, PowerShell, Bash, EDR, SIEM, Cloud security tools, Threat modeling tools
3w
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Lead Penetration Test Engineer
Boston or Chicago or Dallas or Houston or Englewood or Raleigh or Princeton or New York or Southfield or Washington or Toronto or Calgary or Boulder
$135k-$200k/yr HybridFull Time
S&P Global
S&P GlobalNYSE: SPGI: Provides financial data, analytics, and credit ratings worldwide.
8+ YOEBachelor's degree or equivalent, minimum 8 years information security experience focused on penetration testing, expertise with offensive techniques, cloud/app security, scripting, and at least one offensive security certification.
Burp Suite, Nessus, Metasploit, Nmap, DAST, SAST, SCA, CI/CD, Bash, Python, Go, PowerShell, JavaScript, MITRE ATT&CK, OWASP Top 10, CVE, CVSS, CWE
2w
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Senior Penetration Testing Engineer
Chicago, Illinois, United States
$93k-$144k/yr HybridFull Time
Alliant Credit Union
Alliant Credit Union: Provides digital banking, consumer loans, and mortgage lending services.
3+ YOEBachelor's in CS/related or 6 years' equivalent; minimum 3 years penetration testing/offensive security; preferred offensive security certifications; strong communication and reporting skills.
3w
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Senior Red Team Operator
Minneapolis or Atlanta or Cincinnati or Cupertino or Portland or New York or Chicago or Englewood or Charlotte or Irving
$133k-$157k/yr HybridFull Time
U.S. Bank
U.S. BankNYSE: USB: Provider of personal, business, and institutional financial services.
8+ YOEBachelor's degree or equivalent, 8+ years in information security with offensive security/Red Team experience; expertise in exploit development, offensive tooling, and scripting; strong communication and leadership.
Cobalt Strike, Metasploit, Mythic, Sliver, Python, PowerShell, C/C++, C#, Go, Shell, EDR, XDR, Infrastructure as Code (IaC)
1mo
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Staff Attack Engineer, OCI
Chicago or United States
$247k-$275k/yr RemoteFull Time
Horizon3.ai
Horizon3.ai: Autonomous penetration testing platform for continuous security assessment.
10+ YOE10+ years engineering or offensive security experience, hands-on OCI offensive security experience, strong cloud attack path knowledge, Python coding, web and cloud pentesting experience, strong research and documentation skills.
Python, NodeZero, Oracle Cloud Infrastructure (OCI), Oracle Kubernetes Engine (OKE), Kubernetes, AWS, Azure, GCP
1w
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AI Penetration Tester
Florida or Arizona or Texas or Illinois
$122k-$228k/yr RemoteFull Time
BMO
BMOTSX: BMO: Provides personal and commercial banking, investment, and wealth services.
7+ YOE7+ years in information security with offensive testing experience, expertise assessing AI/LLM/GenAI systems, strong scripting (Python), knowledge of OWASP/API security and cloud security, and multiple industry security certifications.
Python, OWASP Top 10, API Security Top 10, NIST Cyber Security Framework (CSF), ISO 27001, ISO 27002
1mo
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Principal Red Team Operator
Johnston or Boston or Iselin or Pittsburgh or Cleveland or Chicago or Philadelphia or Manchester
$120k-$210k/yr HybridFull Time
Citizens Financial Group
Citizens Financial GroupNYSE: CFG: Provides retail, commercial, and private banking services to customers.
4+ YOE4+ years hands-on offensive security experience with red/purple team operations, adversary emulation, campaign-based testing; Bachelor's preferred or equivalent experience; OSCP/OSEP/CRTO/CRTP or similar; AI security exposure; strong communication.
3w
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Associate Principal, Adversarial Red Team
Chicago, Illinois, United States
$122k-$197k/yr HybridFull Time
Options Clearing Corporation
Options Clearing Corporation: Clearing and settlement for equity derivatives and options.
5+ YOE5+ years in cybersecurity with 3+ years penetration testing; strong offensive security skills (OSINT, red team, C2, evasion), programming/scripting, cloud testing (AWS/Azure), EM/EDR familiarity, excellent communication, and security certifications preferred.
AI/LLM, Model Context Protocol (MCP), AWS, Azure, Crowdstrike, Carbon Black, Kali, Armitage, Metasploit, Cobalt Strike, Nighthawk, Nmap, Qualys, Nessus, Burp Suite, Wireshark, Recon-NG, Ettercap, Bettercap, Hashcat, Bloodhound, Ida Pro, Ghidra, Sublist3r, Rubeus, Mimikatz, CrackMapExec, Exploitdb, Yersinia, Impacket, MSSQL, DB2, MySQL, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Visio, Microsoft SharePoint, ServiceNow, DMS, PolicyTech
3mo
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Penetration Tester
Washington or San Antonio or Cleveland or California or Colorado or Hawaii or Illinois or Maine or Maryland or Massachusetts or Minnesota or New Jersey or New York or Vermont or Virginia or Washington
$126k-$243k/yr HybridFull Time
Accenture Federal Services
Accenture Federal ServicesNYSE: ACN: Provides technology and consulting services to U.S. federal agencies.
2+ YOE2+ years penetration-testing experience across at least two domains (network, cloud, web app, identity, containers); proficiency with offensive-security tools and producing technical reports; experience with Rules of Engagement.
Burp Suite, Cobalt Strike, Metasploit, BloodHound
3w
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Lead Penetration Test Engineer
Princeton or Boston or Chicago or Dallas or Houston or Englewood or Raleigh or New York or Southfield or Washington or Toronto or Calgary
$135k-$200k/yr HybridFull Time
S&P Global
S&P GlobalNYSE: SPGI: Provides independent credit ratings, market benchmarks, and financial analytics.
8+ YOEBachelor's or equivalent, 8+ years in information security with penetration testing focus; hands-on with Burp Suite, Nessus, Metasploit, Nmap; scripting (Bash, Python, Go, PowerShell, JavaScript); offensive cert (OSCP or similar).
Burp Suite, Nessus, Metasploit, Nmap, MITRE ATT&CK, OWASP Top 10, DAST, SAST, SCA, CVE, CVSS, CWE, Bash, Python, Go, PowerShell, JavaScript, CI/CD
3w
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Forward deployed engineer Chicago
Chicago, Illinois, United States
FieldFull Time
Aikido Security
Aikido Security: Developer-first security platform for code, cloud, and runtime.
Strong infrastructure and networking fundamentals (Docker, DNS, TLS), Linux debugging, ability to read Go/TypeScript/Python, familiarity with enterprise networks, basic offensive security knowledge, strong communication; must live in Chicago.
Docker, Postgres, Go, TypeScript, Python, Linux, AWS, Azure, GCP, SSO, IdP, PKI, DNS, TLS
1mo
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Penetration Tester
New York or Washington or Chicago or Wilmington or Jersey City or Brooklyn or Tampa or Atlanta or McLean or Plano or Houston or Columbus
$152k-$260k/yr OnsiteFull Time
JPMorgan Chase
JPMorgan ChaseNYSE: JPM: Global financial services firm providing banking and investment solutions.
5+ YOE5+ years penetration testing experience across web, API, cloud, infrastructure, thick-client, and mobile; strong manual testing skills, reporting ability, and knowledge of OWASP/NIST frameworks; relevant offensive security certifications preferred.
Burp Suite, Nmap, Metasploit, AWS, Azure, GCP, OWASP Top Ten, NIST Cybersecurity Framework, Python, Java, Rust, Android, iOS, Windows, Unix
1mo
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Cyber Purple Team Operator
Chicago or Tempe
$100k-$169k/yr HybridFull Time
Northern Trust
Northern TrustNASDAQ: NTRS: Financial services for individuals, families, and global institutions.
3+ YOE3+ years in cybersecurity with purple/red/blue teaming experience; strong MITRE ATT&CK knowledge; coding/scripting (Python/PowerShell/Bash); SIEM/EDR; cloud security; offensive security tools; AI automation; cloud environments; AD/EntraID; OSI/networking concepts; EDR evasion payloads; relevant certifications.
Cobalt Strike, Metasploit, Caldera, Mythic, Breach and Attack Simulation, Python, PowerShell, Bash, Azure, AWS, EntraID, Active Directory, EDR, SIEM