{"id":2234842,"url":"https://alion.io/job/idelsoft-senior-backend-performance-engineer-node-js-europe","title":"Senior Backend Performance Engineer - Node.js (Europe)","company":{"id":4380985,"name":"iDelsoft","domain":"idelsoft.com","url":"https://alion.io/company/idelsoft","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":["US"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":87000,"max_usd":215000,"period":"year","method":"global_role_seniority_cell","sample_n":6426},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Node JS","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Redis","optional":false},{"name":"TypeScript","optional":false},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-10-10T22:39:40Z","employer_posted_date":null,"last_verified_at":"2026-10-10T22:39:40Z","board_verified":false,"closed_at":null,"days_open":1,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":1},"description":"We're hiring an engineer to build the backend infrastructure behind an exceptionally fast product — one that stays fast regardless of scale. The system is live and growing; your job is to drive latency down across every layer of the stack.\nThis is a high-ownership role: you'll own backend performance across the platform and build custom infrastructure wherever off-the-shelf solutions can't keep up.\nWhat You'll Do\nOwn backend performance across the platform — databases, APIs, queues, and background processing\n\nDesign advanced caching and data synchronization systems\n\nProfile production systems and eliminate latency bottlenecks at every layer\n\nBuild custom infrastructure where third-party solutions aren't fast enough\n\nImprove scalability while keeping response times low\n\nWork with feature teams to hit performance targets, and continuously benchmark against best-in-class SaaS products\n\nWhat We're Looking ForMust have:\n4+ years of backend engineering experience, including 4+ years building and scaling high-traffic production systems\n\nProven track record of optimizing large-scale backend systems\n\nDeep expertise in Node.js, TypeScript, PostgreSQL, Redis, networking, and distributed systems\n\nExtensive experience with database optimization, caching, asynchronous processing, and API performance\n\nExperience building custom infrastructure instead of relying solely on third-party solutions\n\nStrong computer science fundamentals, algorithms, and systems design knowledge; exceptional engineering standards and attention to detail\n\nExperience building products where latency and scalability were critical to the business\n\nNice to have:\nExperience with high-volume messaging or event-driven systems\n\nExperience at a startup or fast-moving product company\n\nFamiliarity with performance observability tooling (profilers, tracing, APM)\n\nOriginally posted on Himalayas","description_format":"text","description_chars":1872,"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":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Custom Software Development"],"lifecycle":[{"event":"open","at":"2026-10-10T23:28:30Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":1,"expected_fill_days":29,"reasons":["seen:1","win:early"],"computed_at":"2026-10-12T06:55:09Z"},"pay":null,"html_url":"https://alion.io/job/idelsoft-senior-backend-performance-engineer-node-js-europe","json_url":"https://alion.io/job/idelsoft-senior-backend-performance-engineer-node-js-europe.json","meta":{"generated_at":"2026-10-12T11:23:29Z","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":17646,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-13T00:00:00Z"}},"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":4380985},"rest":"https://alion.io/mcp/rest/get_company?id=4380985"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fidelsoft-senior-backend-performance-engineer-node-js-europe"},{"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%2Fidelsoft-senior-backend-performance-engineer-node-js-europe"},{"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%2Fidelsoft-senior-backend-performance-engineer-node-js-europe"},{"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/idelsoft-senior-backend-performance-engineer-node-js-europe\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fidelsoft-senior-backend-performance-engineer-node-js-europe"}]}