{"id":1270564,"url":"https://alion.io/job/alinia-back-end-engineer","title":"Back-End Engineer","company":{"id":2196424,"name":"Alinia","domain":"alinia.ai","url":"https://alion.io/company/alinia","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Gem","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"middle","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Barcelona, Spain"],"countries":["ES"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":41000,"max_usd":109000,"period":"year","method":"role_seniority_country_cell","sample_n":9},"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"FastAPI","optional":false},{"name":"GCP","optional":false},{"name":"ISO 27001","optional":false},{"name":"LLM","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"SOC 2","optional":false},{"name":"Kubernetes","optional":true},{"name":"Pulumi","optional":true},{"name":"Terraform","optional":true}],"status":"live","first_seen_at":"2025-09-10T14:43:00Z","employer_posted_date":"2025-09-10","last_verified_at":"2026-09-25T23:56:20Z","board_verified":true,"closed_at":null,"days_open":380,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":380},"description":"About the Role\nAs Alinia’s Back-End Engineer, you will play a foundational role in shaping the core infrastructure and backend systems powering our platform. We're building critical safety and governance infrastructure for generative AI, and as one of the first engineers, you’ll be instrumental in ensuring that our backend is fast, scalable, secure, and enterprise-ready. This is a hands-on, high-impact role for someone who thrives in a fast-paced startup, can wear multiple hats, and wants to help define how the backend of AI-powered products should be built.\nResponsibilities\nMaintain, scale, and secure our Python FastAPI backend and microservices\n Serve and optimize large language models (LLMs) via performant, cost-aware inference endpoints\nDesign and build robust, scalable APIs to support product and customer use cases\nSet up and manage CI/CD pipelines, observability, and monitoring to ensure system reliability\nManage cloud infrastructure and optimize spend, balancing performance and cost\nImplement security best practices and support compliance with frameworks like SOC 2 and ISO 27001\nWork closely with product and front-end engineers, translating user and product needs into scalable backend architecture\nCollaborate with technical vendors, AI providers, and cloud platforms on integrations and deployments\nTriage and resolve backend bugs or incidents, especially those affecting customer experience\nSupport post-sales technical implementation and onboarding for enterprise customers\nRequirements\n3+ years as a backend engineer working on production systems\nStrong proficiency in Python and experience building with FastAPI or similar frameworks\nDeep experience with RESTful APIs, PostgreSQL, and Docker\nSolid understanding of backend infrastructure, including deployment, CI/CD, observability, and debugging\nExperience working with or integrating LLM inference pipelines\nFamiliarity with cloud platforms (e.g. AWS, GCP, or Azure)\nStrong understanding of security, data privacy, and compliance in an enterprise SaaS context\nClear communicator and cross-functional collaborator\nComfortable working in a startup environment with shifting priorities and open threads\nNice to have:\nExperience building and scaling systems to support LLM-serving infrastructure\nExposure to infrastructure-as-code (e.g. Terraform, Pulumi) and Kubernetes\nPrior experience with SOC 2, ISO 27001, or similar audits\n0→1 startup experience and ability to navigate ambiguity with ownership\nDevOps mindset: build, monitor, fix, and improve continuously\nWhy Join Alinia?\nCutting-edge tech: Work on one of the most important challenges in AI-alignment, safety, and trust\nHigh ownership & growth: Be a core part of the early engineering team with massive upside\nFlexible work: Hybrid or remote work, with preference for CET time zone\nCollaborative culture: Small, experienced, mission-driven team\n Impact: Directly shape the technical foundation of an AI governance platform adopted by enterprises","description_format":"text","description_chars":2983,"description_truncated":false,"requirements":{"experience_years_min":3,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Flexible schedule"],"hiring_locations":[{"name":"Spain","iso":"ES","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Artificial Intelligence","LLM & Generative AI","AI Agents"],"lifecycle":[{"event":"open","at":"2026-09-25T23:56:20Z"}],"liveness":{"score":6,"band":"cold","label":"Long shot","p_open":1,"p_active":0.221,"p_room":0.28,"age_days":380,"expected_fill_days":23,"reasons":["conf:2","win:tail","crowd:"],"computed_at":"2026-09-26T02:22:44Z"},"pay":null,"html_url":"https://alion.io/job/alinia-back-end-engineer","json_url":"https://alion.io/job/alinia-back-end-engineer.json","meta":{"generated_at":"2026-09-26T02:22:44Z","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":2420,"day_limit":5000,"remaining_today":2580,"minute_limit":60,"resets_at":"2026-09-27T00:00:00Z"}}}