{"id":4096303,"url":"https://alion.io/job/g-research-network-security-engineer-contract","title":"Network Security Engineer (Contract)","company":{"id":445185,"name":"G-Research","domain":"gresearch.com","url":"https://alion.io/company/g-research","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"A","score":94,"open_postings":58,"ghost_share":0.017,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":97,"computed_at":"2026-11-11T05:49:22Z"}},"role":"Security","role_family":"Security","seniority":null,"employment_type":"contractor","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":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"DNS","optional":false},{"name":"TCP/IP","optional":false}],"status":"live","first_seen_at":"2026-11-11T21:08:12Z","employer_posted_date":"2026-11-11","last_verified_at":"2026-11-11T21:08:12Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"We tackle the most complex problems in quantitative finance, by bringing scientific clarity to financial complexity.\nFrom our London HQ, we unite world-class researchers and engineers in an environment that values deep exploration and methodical execution - because the best ideas take time to evolve. Together we’re building a world-class platform to amplify our teams’ most powerful ideas.\nAs part of our engineering team, you’ll shape the platforms and tools that drive high-impact research - designing systems that scale, accelerate discovery and support innovation across the firm.\nTake the next step in your career.\nThe role\nWe’re looking for an experienced Network Security Engineer who’s passionate about building and maintaining high-performance, scalable and resilient network infrastructure.\nYou’ll be part of a team that designs, automates and supports a global environment, which underpins cutting-edge research and technology operations, and drives the success of G-Research.\nKey responsibilities of the role include:\nDesigning and implementing security systems\nDelivering high-quality designs and ensuring successful roll-out of strategic initiatives\nPartnering closely with Security Architecture to drive security roadmaps\nWorking closely with wider core infrastructure teams to ensure alignment on infrastructure goals and configurations\nConducting regular network security audits and ensuring compliance with internal standards and best practices\nBeing the point of contact for escalations from the operations team\nImplementing change requests\nIf you’re motivated by solving complex problems, automating at scale and working in a collaborative, high-performance environment, we’d love to hear from you.\nWho are we looking for?\nYou’ll thrive in this role if you bring a mix of deep technical expertise, problem-solving instinct and a passion for modern network security engineering.\nWe’re looking for someone who can think strategically, automate intelligently and deliver reliably at scale.\nThe ideal candidate will have the following skills and experience:\nKnowledge of security frameworks such as NIST, CIS or similar\nExperience configuring and operating enterprise firewalls, including Fortinet and Palo Alto\nExperience with Web proxy technologies and traffic inspection\nFamiliarity with F5 technologies, including LTM, ASM and APM\nStrong understanding of deep packet inspection, core security engineering principles and modern attacker techniques\nSolid knowledge of networking fundamentals, including TCP/IP, routing, switching and DNS\nExperience with automation and scripting\nKnowledge of privileged access management solutions\nPlease note that contract applications for London based roles at G-Research are handled by one of our third-party recruitment partners, so your application will be managed through them.\nWhy join us?\nHighly competitive compensation \nLunch provided (via Just Eat for Business) and dedicated barista bar\nInformal dress code and excellent work/life balance\nMonthly company events\nG-Research is committed to cultivating and preserving an inclusive work environment. We are an ideas-driven business and we place great value on diversity of experience and opinions.\nWe want to ensure that applicants receive a recruitment experience that enables them to perform at their best. If you have a disability or special need that requires accommodation please let us know in the relevant section","description_format":"text","description_chars":3432,"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":["Company events"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Network Security","Machine Learning","Hedge Funds & Alternative Investments"],"lifecycle":[{"event":"open","at":"2026-11-11T21:08:12Z"}],"visa":[{"country":"GB","licensed_sponsor":true,"adverts_offering_sponsorship_24m":0,"sanctioned_now":false,"evidence":"Licensed UK visa sponsor (Skilled Worker)","filings_12m":null,"filings_prev_12m":null,"green_card_filings_12m":null,"median_offered_wage_usd":null,"route":"Skilled Worker","cap_exempt":false,"checked_at":"2026-11-11T07:38:50+00:00","sources":["UK Home Office: register of licensed sponsors (workers)"],"filings_for_role_12m":0}],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":97,"reasons":["conf:3","win:early"],"computed_at":"2026-11-12T00:37:03Z"},"pay":null,"html_url":"https://alion.io/job/g-research-network-security-engineer-contract","json_url":"https://alion.io/job/g-research-network-security-engineer-contract.json","meta":{"generated_at":"2026-11-12T00:37:03Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":1419,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-13T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.1,"usd":0.01,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":445185},"rest":"https://alion.io/mcp/rest/get_company?id=445185"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fg-research-network-security-engineer-contract"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":2,"usd":0.2},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fg-research-network-security-engineer-contract"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.1,"usd":0.01},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fg-research-network-security-engineer-contract"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/g-research-network-security-engineer-contract\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fg-research-network-security-engineer-contract"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":4096303}},{"tool":"search_jobs","arguments":{"company":"gresearch.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":4096303},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. Docs: https://alion.io/developers"}}