{"id":773639,"url":"https://alion.io/job/nexos-security-engineer-mid-senior","title":"Security Engineer | Mid - Senior","company":{"id":678801,"name":"Nexos","domain":"nexos.ai","url":"https://alion.io/company/nexos-3","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":null},"role":"Security","role_family":"Security","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Vilnius, Lithuania"],"countries":["LT"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":57000,"max_usd":128000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":1261},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"CI/CD","optional":false},{"name":"GitOps","optional":false},{"name":"Kubernetes","optional":false},{"name":"Red Teaming","optional":false},{"name":"Shift-Left","optional":false},{"name":"Shift-Left Security","optional":false},{"name":"Threat Modeling","optional":false},{"name":"Wiz","optional":false}],"status":"live","first_seen_at":"2026-09-11T10:19:01Z","employer_posted_date":"2026-09-11","last_verified_at":"2026-09-30T02:21:10Z","board_verified":true,"closed_at":null,"days_open":18,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":18},"description":"As a Security Engineer at nexos.ai you will own the security of the cloud and Kubernetes platform behind a live AI product - an environment where AI is both the product and the primary risk surface, and where AI-specific attack paths are part of the threat model, not an afterthought.\nYou will bring an attacker's mindset to defense, work closely with the SOC and DevOps teams, and act as the internal technical anchor that bridges cloud security, detection, and engineering, with the Information Security Lead as your strategic counterpart.\nMain Responsibilities:\nOwn the security of nexos.ai cloud and Kubernetes infrastructure - triage findings, set priorities, assess the impact of changes, drive remediation to completion within reasonable timeframes, and develop policies for an environment where AI is both the product and the attack surface.\n\nHarden Kubernetes and cloud infrastructure end-to-end - covering container security, network policies, identity, and secrets management.\n\nOwn the resolution of SOC-escalated alerts - investigating findings, making sound judgments on what requires action, and coordinating remediation with DevOps and engineering teams.\n\nContinuously identify security gaps across the environment - drive remediation, propose improvements, and engage the right teams and stakeholders based on the scope and impact of each issue.\n\nConduct cloud and AI-focused threat modeling and proactive threat hunting - identifying realistic attack paths and closing them before they can be exploited.\n\nEmbed security into CI/CD pipelines, infrastructure-as-code, and GitOps delivery - automated scanning, pipeline gates, and shift-left practices.\n\nBuild scripts and automation to eliminate repetitive security tasks and improve operational efficiency.\n\nCore Requirements:\nA solid foundation in security engineering - cloud, application, or infrastructure - with a demonstrated appetite for learning new domains and a track record of mastering them.\n\nSolid working knowledge of cloud environments, container security, or infrastructure-as-code - AWS experience is a strong plus.\n\nExperience in alert triage, incident investigation, or security operations; comfortable making judgment calls and driving findings to resolution.\n\nThreat modeling experience or a strong intuition for how attackers think - able to identify realistic attack paths and translate them into defensive action.\n\nAble to read and write scripts to automate security tasks and investigations.\n\nStrong collaborator, who works credibly with technical teams and communicates security risks clearly to leadership.\n\nThrives in a fast-moving startup environment, takes ownership, builds from scratch, and drives initiatives independently.\n\nBonus Point For:\nHands-on experience with a CNAPP platform (e.g. Wiz)\n\nFamiliarity with AI/ML infrastructure security\n\nOffensive background (penetration testing, red teaming, CTFs, or security research)\n\nRelevant certifications (AWS Security Specialty, CKS, OSCP, or equivalent)\n\nCommunity contributions (CVEs, bug bounty recognition, open-source tools, or security writing).\n\nSalary range:\nGross salary is from 4300 per month depending on your experience level.\nWhat We Offer\nProfessional growth. Internal and external events, online training, conferences, books - everything you need to reach your full potential.\n\nHealth benefits. Private health insurance, online & on-site workouts (LT) / online workouts & sports access card (PL), consultations - to feel and be your best.\n\nTeam spirit. Team buildings and parties with games, shows, tastings, food coupons, gifts - and it's on us.\n\nMore free time. Stay with us and additional vacation days will be added to your calendar.\n\nAdditional paid leave. Additional days are covered by us in cases of illness or special occasions.\n\nFlexibility. Flexible working time arrangement.","description_format":"text","description_chars":3848,"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":["Flexible schedule","Health insurance"],"hiring_locations":[{"name":"Lithuania","iso":"LT","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["LLM & Generative AI","AI Development Tools"],"lifecycle":[{"event":"open","at":"2026-09-11T22:14:36Z"}],"liveness":{"score":80,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.889,"p_room":0.9,"age_days":17,"expected_fill_days":46,"reasons":["conf:0","velocity","win:mid"],"computed_at":"2026-09-29T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/nexos-security-engineer-mid-senior","json_url":"https://alion.io/job/nexos-security-engineer-mid-senior.json","meta":{"generated_at":"2026-09-30T04:11:49Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":2838,"day_limit":5000,"remaining_today":2162,"minute_limit":60,"resets_at":"2026-10-01T00:00:00Z"}}}