{"id":2022609,"url":"https://alion.io/job/seqino-senior-backend-engineer","title":"Senior Backend Engineer","company":{"id":2293733,"name":"SEQINO","domain":"seqino.com","url":"https://alion.io/company/seqino","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Welcome to the Jungle","truth_index":null},"role":"Backend","role_family":"Backend","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":["Puteaux, France","France"],"countries":["FR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":47000,"max_usd":79000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":182},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-09-04T16:52:02Z","employer_posted_date":"2026-10-07","last_verified_at":"2026-11-06T15:38:19Z","board_verified":true,"closed_at":null,"days_open":63,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":63},"description":"Rejoins notre équipe en tant que Senior Backend Engineer. Tu seras responsable de la conception, du développement et de la fiabilisation de nos services backend, tout en élevant le niveau de qualité du code et des pratiques au sein de l'équipe. Tu travailleras en étroite collaboration avec le CTO, le lead backend et les équipes produit, dans une ambiance saine et exigeante.\nMissions\nLivrer des fonctionnalités de production de haute qualité, en veillant à ce que le code soit propre, testé, documenté et observable.\nTraiter des sujets complexes, de la conception à la mise en production, en assurant le suivi post-release.\nAssurer la qualité runtime des services, y compris le monitoring, les logs, les alertes et les corrections proactives.\nProfil recherché\nUne personne **autonome, curieuse et proactive**, qui voit le backend comme **un levier de transformation produit**.* Expérience confirmée en **développement backend** dans un environnement exigeant.\n* Maîtrise des **API, HTTP, services distribués et bases de données**.\n* Sensibilité forte à la **performance, fiabilité, sécurité et observabilité**.\n* Autonome, rigoureux·se et capable de **prendre des décisions techniques importantes**.\n* Goût pour la collaboration et la **transmission des bonnes pratiques**.\nUne expérience dans des environnements **financiers** ou **réglementés** est un vrai plus.","description_format":"text","description_chars":1366,"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":[{"language":"French","level":"Advanced (C1)","optional":false}]},"benefits":[],"hiring_locations":[{"name":"France","iso":"FR","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Software","Billing & Subscription Management","Accounting & Bookkeeping Services"],"lifecycle":[{"event":"open","at":"2026-10-07T13:23:18Z"}],"visa":[],"liveness":{"score":15,"band":"cold","label":"Long shot","p_open":1,"p_active":0.529,"p_room":0.28,"age_days":62,"expected_fill_days":29,"reasons":["conf:3","win:tail","crowd:"],"computed_at":"2026-11-06T05:58:05Z"},"pay":null,"html_url":"https://alion.io/job/seqino-senior-backend-engineer","json_url":"https://alion.io/job/seqino-senior-backend-engineer.json","meta":{"generated_at":"2026-11-06T19:45:01Z","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":3347,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-07T00:00:00Z"}},"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":2293733},"rest":"https://alion.io/mcp/rest/get_company?id=2293733"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fseqino-senior-backend-engineer"},{"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%2Fseqino-senior-backend-engineer"},{"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%2Fseqino-senior-backend-engineer"},{"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/seqino-senior-backend-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fseqino-senior-backend-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":2022609}},{"tool":"search_jobs","arguments":{"company":"seqino.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":2022609},"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. 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