{"id":116920,"url":"https://alion.io/job/nebulock-senior-software-engineer-agents","title":"Senior Software Engineer - Agents","company":{"id":43751,"name":"Nebulock","domain":"nebulock.io","url":"https://alion.io/company/nebulock","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":["US"],"hiring_countries_total":1,"salary":{"min":160000,"max":210000,"currency":"USD","period":"year","gross":null,"usd_annual":210000},"salary_estimate":null,"experience_years_min":4,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"AWS","optional":false},{"name":"Embeddings","optional":false},{"name":"GCP","optional":false},{"name":"Go","optional":false},{"name":"Java","optional":false},{"name":"LLM","optional":false},{"name":"Python","optional":false},{"name":"RAG","optional":false},{"name":"Rust","optional":false},{"name":"Semantic Search","optional":false},{"name":"Semantic Search","optional":false},{"name":"Crowdstrike","optional":true}],"status":"live","first_seen_at":"2026-08-20T22:43:29Z","employer_posted_date":"2026-08-20","last_verified_at":"2026-10-18T00:32:16Z","board_verified":true,"closed_at":null,"days_open":58,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":58},"description":"Senior Backend Engineer - Agents\nLocation: Remote (US) or Hybrid (Boston)\nAbout Us\nNebulock builds hunt-first, behavior-first security operations. Enterprise security teams use us to find attackers already inside their environment by spotting behavior that's abnormal for that organization, rather than by matching signatures of attacks someone has already seen. Attackers rotate tooling constantly and it costs them almost nothing; changing how they behave is much harder.\nSeries A, $34M total raised led by FirstMark, with Bain Capital Ventures, Decibel, Zetta, Step Function, and In-Q-Tel. Founding team out of CrowdStrike, Palo Alto Networks, and Arctic Wolf.\nThe platform is a closed loop:\nA per-customer behavioral system of record that learns what normal looks like in a specific environment and gets more useful the longer it runs\n\nDetections built from that context, re-baselining as environments shift, maintained by a detection engineering team rather than shipped and forgotten\n\nAutonomous hunting agents that work from a hypothesis instead of an alert, and write the detection when they establish root cause\n\nDetection engineering agents that take the context of threat hunts run to build, test, validate and deploy behavioral detections for Nebulock customers.\n\nPosition Overview\nAs a Senior Backend Engineer - Agents at Nebulock, you will work on the agent infrastructure and platforms upon which our agents are built, as well as the agents that power our product. You’ll co-own our TRACE Graph and other knowledge stores, ensuring our agents continuously adapt to feedback and learn. This role is ideal for engineers who are relentless about iterating and improving upon non-deterministic, agentic systems. This role will collaborate closely with our detection engineers and threat hunters to ensure that we are encoding their domain expertise into our agents.\nExpected Impact\nContinuous iteration, evaluation, and cross-team collaboration to ensure that our agents are behaving like the expert detection engineers and threat hunters on staff at Nebulock\n\nDesign, build, and maintain scalable data structures that are optimized for our agents (our TRACE graph, embeddings, semantic search etc.)\n\nEnsure that our agents are behaving safely and as expected\n\nBuild and maintain automated evaluations and benchmarks for our agents to ensure that we can iterate quickly while not having regressions\n\nProvide feedback and guidance to other engineers who are working on agents at Nebulock\n\nStep in to work on additional backend systems as needed (we are a startup and flexibility is key to our success)\n\nQualifications\n4+ years software engineering experience with 1+ years building customer-facing agentic systems in production\n\nStrong backend software engineering fundamentals\n\nProficiency in Python, Java, Go, Rust, or similar\n\nStrong understanding of agentic architectures and their tradeoffs\n\nExperience designing, building, and evaluating production RAG systems\n\nStrong experience with agent evals and agent observability\n\nExperience with either AWS or GCP\n\nAbility to adapt, iterate, and ship quickly\n\nHunger for growth and the desire to work in a low-ego environment\n\nAble to stay up to date with the newest advancements in the LLM and agent space while maintaining a relentless focus on delivering customer value\n\nNice to Haves\nCybersecurity experience\n\nStartup experience\n\nExperience with graph databases\n\nExperience evaluating the performances of different LLMs\n\nCompensation\nWe offer a competitive compensation package comprised of a base salary, equity and comprehensive benefits. The base salary for this role is $160,000 - $210,000. Compensation packages are determined based on a number of factors including but not limited to, role related experience, skillset, and geographic location.\nBenefits\nHealth, dental, and vision coverage\n\nUnlimited PTO\n\nRemote working flexibility\n\nLife Insurance\n\n401k","description_format":"text","description_chars":3922,"description_truncated":false,"requirements":{"experience_years_min":4,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["401k plan","Equity","Life insurance","Unlimited PTO"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Threat Intelligence","Security Operations"],"lifecycle":[{"event":"open","at":"2026-08-20T22:43:29Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 3","filings_12m":3,"filings_prev_12m":0,"green_card_filings_12m":0,"median_offered_wage_usd":182500,"route":null,"cap_exempt":false,"checked_at":"2026-10-15T11:24:14+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)"],"filings_for_role_12m":3}],"liveness":{"score":25,"band":"fade","label":"Fading","p_open":1,"p_active":0.564,"p_room":0.45,"age_days":57,"expected_fill_days":35,"reasons":["conf:0","win:tail"],"computed_at":"2026-10-17T05:46:00Z"},"pay":{"stated_usd_annual":210000,"is_top_pay":true},"html_url":"https://alion.io/job/nebulock-senior-software-engineer-agents","json_url":"https://alion.io/job/nebulock-senior-software-engineer-agents.json","meta":{"generated_at":"2026-10-18T02:17:17Z","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":3750,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-19T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"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":43751},"rest":"https://alion.io/mcp/rest/get_company?id=43751"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fnebulock-senior-software-engineer-agents"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"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%2Fnebulock-senior-software-engineer-agents"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"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%2Fnebulock-senior-software-engineer-agents"},{"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/nebulock-senior-software-engineer-agents\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fnebulock-senior-software-engineer-agents"}]}