This job posting is anticipated to remain open for 30 days, from 18-May-2026. The posting may close early due to the volume of applicants. Team Overview. The Engineer III, System Security Engineer plays a key role in protecting the firms enterprise computing environment by designing, implementing, and operating foundational security controls across endpoints, operating systems, and device access. This is a hands-on engineering position within the System Security team, partnering closely with infrastructure, identity, risk, and application teams to reduce risk while enabling the business. Engineers in this role work on initiatives aligned to modern security strategies such as zero trust, endpoint protection, device authentication, and system hardening, while continuing to deepen their technical expertise and broaden their impact across the enterprise. What Youll Do Design, implement, and operate enterprise system security controls that protect endpoints, operating systems, and device access. Contribute to security initiatives such as zero trust, endpoint protection, system hardening, and device authentication. Partner crossfunctionally with infrastructure, identity, application, and risk teams to embed security into technology solutions. Identify security risks and recommend pragmatic improvements that balance protection, usability, and business needs. Provide operational support for critical security platforms to ensure availability, resilience, and rapid issue resolution. Lead moderatecomplexity security initiatives and contribute to larger, crossteam security efforts. Mentor and support junior engineers through knowledge sharing, technical guidance, and best practices. What Experience You'll Need. Bachelors degree in Information Systems, Cybersecurity, Engineering, or a related field or equivalent practical experience .6 years of experience in systems engineering, security engineering, or a closely related technical role. Handson experience implementing or supporting system security controls (e.g., endpoint protection, OS hardening, device access). Working knowledge of Windows and/or Linux environments, including basic security configuration and hardening concepts. Experience collaborating with crossfunctional technical teams to deliver securityfocused solutions. Strong troubleshooting and problemsolving skills, with the ability to assess risk and recommend practical remediation. Ability to learn new security tools, platforms, and domains through handson experience. What Could Set You Apart. Experience with endpoint security platforms, device authentication, or zerotrustaligned technologies. Exposure to PKI, certificate lifecycle management, or certificatebased authentication. Familiarity with Active Directory, Group Policy, or similar configuration management tools. Experience with scripting or automation (e.g., PowerShell, Python, shell scripting) for efficiency or troubleshooting. Knowledge of CIS benchmarks, vulnerability remediation practices, or system hardening standards. Industry certifications (e.g., Security , SSCP, CISSP, or similar). Current INTERNAL home-based associates: While this role is posted as hybrid, if selected and accepted, you may retain your home-based status. Edward Jones intends in good faith to continue offering the role as home-based, though future business or regulatory needs may require on-site work. - - Candidates that live within a commutable distance from our Tempe, AZ and St. Louis, MO home office locations are expected to work in the office four days per week effective June 1, 2026. Before June 1, 2026, candidates that live within a commutable distance from our Tempe, AZ and St. Louis, MO home office locations are expected to work in the office three days per week, with preference for Tuesday through Thursday. - -