{"id":2006032,"url":"https://alion.io/job/skill-expert-1-developpeur-senior-backend-engineers-python","title":"1 développeur / Senior Backend Engineers Python","company":{"id":3908422,"name":"Skill Expert","domain":"skill-expert.fr","url":"https://alion.io/company/skill-expert","size_band":"11-50","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":"freelance","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Paris, France"],"countries":["FR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":51000,"max_usd":86000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":163},"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Alembic","optional":false},{"name":"Amazon S3","optional":false},{"name":"Bash","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"FastAPI","optional":false},{"name":"Git","optional":false},{"name":"GitLab CI","optional":false},{"name":"Kubernetes","optional":false},{"name":"Linux","optional":false},{"name":"MATLAB","optional":false},{"name":"MQTT","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Pydantic","optional":false},{"name":"Pytest","optional":false},{"name":"Python","optional":false},{"name":"RabbitMQ","optional":false},{"name":"Rest API","optional":false},{"name":"SQLAlchemy","optional":false}],"status":"live","first_seen_at":"2026-10-07T09:14:15Z","employer_posted_date":null,"last_verified_at":"2026-10-07T09:14:15Z","board_verified":false,"closed_at":null,"days_open":10,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":10},"description":"Nous recherchons 1 développeur / Senior Backend Engineers Python, avec minimum 8 ans d’expérience en développement backend Python, pour intervenir sur la réalisation d’une plateforme technique intégrant APIs, traitements asynchrones, messagerie et orchestration de moteurs d’exécution.\nMissions principales\nDévelopper les services backend en Python / FastAPI / Pydantic.\nConcevoir et maintenir les API REST versionnées et contrats OpenAPI.\nGérer la validation des paramètres et fichiers transmis par le portail.\nGarantir la cohérence entre base de données et messages avec les patterns transactional outbox, idempotence, optimistic locking, retry, circuit breaker et timeout.\nMettre en œuvre les traitements asynchrones et événementiels.\nPublier et consommer des messages via AMQP / MQTT, avec ACK, retries, dead-letter queues et déduplication.\nOrchestrer les traitements longs et gérer les reprises après incident.\nDévelopper les adaptateurs vers Python, MATLAB, DSS Automation et ArcGIS / ESRI.\nPiloter les conteneurs via Docker / Kubernetes et gérer les entrées/sorties, journaux, erreurs et résultats.\nMettre en œuvre les mécanismes de sécurité, les tests automatisés et l’observabilité.\nProfil recherché\nCompétences indispensables\nPython 3 avancé : typage, async, concurrence, gestion des erreurs.\nFastAPI, Pydantic, OpenAPI.\nAPI REST.\nPostgreSQL / SQL92.\nSQLAlchemy / Alembic.\npytest : tests unitaires, intégration et contrats.\nGit / GitLab CI/CD.\nDocker / OCI.\nLinux / Bash.\nArchitectures distribuées et asynchrones.\nObservabilité : logs structurés, métriques, traces, correlation IDs.\nSécurité : OAuth2, OpenID Connect, JWT, RBAC, gestion des secrets.\nCompétences appréciées\nKubernetes.\nAMQP / RabbitMQ.\nMQTT.\nS3 / stockage objet.\nMATLAB.\nDataiku DSS Automation.\nArcGIS / ESRI.","description_format":"text","description_chars":1785,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-07T12:33:56Z"}],"visa":[],"liveness":{"score":78,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.779,"p_room":1,"age_days":9,"expected_fill_days":30,"reasons":["seen:9","velocity","win:early"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/skill-expert-1-developpeur-senior-backend-engineers-python","json_url":"https://alion.io/job/skill-expert-1-developpeur-senior-backend-engineers-python.json","meta":{"generated_at":"2026-10-17T20:51:56Z","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":5115,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"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":3908422},"rest":"https://alion.io/mcp/rest/get_company?id=3908422"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fskill-expert-1-developpeur-senior-backend-engineers-python"},{"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%2Fskill-expert-1-developpeur-senior-backend-engineers-python"},{"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%2Fskill-expert-1-developpeur-senior-backend-engineers-python"},{"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/skill-expert-1-developpeur-senior-backend-engineers-python\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fskill-expert-1-developpeur-senior-backend-engineers-python"}]}