{"id":663001,"url":"https://alion.io/job/drw-network-security-engineer","title":"Network Security Engineer","company":{"id":58537,"name":"DRW","domain":"drw.com","url":"https://alion.io/company/drw","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":84,"open_postings":55,"ghost_share":0,"stale_share":0.455,"repost_share":0,"time_to_fill_p50_days":73,"computed_at":"2026-10-10T05:45:15Z"}},"role":"Security","role_family":"Security","seniority":null,"employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":82000,"max_usd":192000,"period":"year","method":"role_country_seniority_unknown","sample_n":128},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"VPN","optional":false}],"status":"live","first_seen_at":"2026-06-16T10:14:55Z","employer_posted_date":"2026-08-27","last_verified_at":"2026-10-11T23:53:51Z","board_verified":true,"closed_at":null,"days_open":117,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":117},"description":"DRW is a diversified trading firm with over 3 decades of experience bringing sophisticated technology and exceptional people together to operate in markets around the world. We value autonomy and the ability to quickly pivot to capture opportunities, so we operate using our own capital and trading at our own risk.\nHeadquartered in Chicago with offices throughout the U.S., Canada, Europe, and Asia, we trade a variety of asset classes including Fixed Income, ETFs, Equities, FX, Commodities and Energy across all major global markets. We have also leveraged our expertise and technology to expand into three non-traditional strategies: real estate, venture capital and cryptoassets.\nWe operate with respect, curiosity and open minds. The people who thrive here share our belief that it’s not just what we do that matters-it's how we do it. DRW is a place of high expectations, integrity, innovation and a willingness to challenge consensus.\nWe are seeking aNetwork Security Engineer to join the network security team to ensure that our infrastructure and networks are properly protected. They will design, coordinate and implement security controls, audit configurations, and design networks in a hybrid compute environment. A successful candidate will have an attention to detail, the ability to understand what impacts their changes have on the network and relevant associated services. \nWhat you’ll be doing:\nCollaborate with cross-functional security, technology, and trading teams to design and deploy innovative solutions that enhance both system integrity and trading performance.\nActively contribute to the design, implementation, and maintenance of mission-critical trading infrastructure that drives resilient and scalable market operations.\nImplement robust strategies to reduce network risks by leveraging micro-segmentation, port-based security, and other innovative methods.\nEvaluate, diagnose, and implement effective network security solutions such as firewalls, network detect and response, intrusion prevention systems (IPS), and VPN concentrators to improve our network security and ensure reliable remote access.\nLeverage automation, AI, and other emerging and innovative technologies to continuously enhance our ability to detect and respond to security events.\nPerform in-depth analysis of network packet captures to investigate security incidents and identify areas for improvement.\nContinuously seek opportunities to automate tasks and streamline security operations for improved efficiency and effectiveness.\nWhat we’re looking for:\nYou are passionate about network security\nYou are a network security engineer who thrives on designing, implementing, and supporting cutting-edge security systems that keep our network safe from emerging threats.\nYou are able to get your hands dirty with hands-on experience in firewalls, client VPNs, SASE, NDR, and IDS solutions.\nYou enjoy scripting and coding to automate processes and reduce repetitive work\nYou have a solid understanding of TCP, UDP, IP, the OSI Model, and Layer 1/2/3 principles.\nYou are a dedicated professional who isn’t afraid of stepping up for on-call duties-even if it means working nights or weekends\nYou are someone that continuously seeking innovative improvements to drive high-quality, state-of-the-art, and effective security solutions.\nYou are an effective communicator, able to translate complex technical insights into clear, actionable strategies that resonate with cross-functional teams.\nFor more information about DRW's processing activities and our use of job applicants' data, please view our Privacy Notice at https://drw.com/privacy-notice.\nCalifornia residents, please review the California Privacy Notice for information about certain legal rights at https://drw.com/california-privacy-notice.\n#LI-MM1","description_format":"text","description_chars":3809,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Network Security","Hedge 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