{"id":3454124,"url":"https://alion.io/job/applefy-premium-software-development-lead-ai-agent-developer-with-relevant-case-studies","title":"Lead AI Agent Developer with Relevant Case Studies","company":{"id":4486021,"name":"Applefy - Premium Software Development","domain":"applefy.tech","url":"https://alion.io/company/applefy-premium-software-development","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"AI/ML","role_family":"AI/ML","seniority":"lead","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":["Ukraine"],"countries":["UA"],"hiring_countries":["UA"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":35000,"max_usd":88000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":1286},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"FastAPI","optional":false},{"name":"Function Calling","optional":false},{"name":"GDPR","optional":false},{"name":"Hybrid Search","optional":false},{"name":"LLM","optional":false},{"name":"Python","optional":false},{"name":"RAG","optional":false},{"name":"Rest API","optional":false},{"name":"Langfuse","optional":true},{"name":"Notion","optional":true},{"name":"pgvector","optional":true},{"name":"PostgreSQL","optional":true}],"status":"live","first_seen_at":"2026-10-23T20:04:52Z","employer_posted_date":null,"last_verified_at":"2026-10-23T20:04:52Z","board_verified":false,"closed_at":null,"days_open":9,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":9},"description":"Applefy, a leading mobile and web development agency, is seeking an AI Engineer to join our team on an ongoing project.\nThe project is an AI customer-support agent for an e-commerce company. You will build the agent that answers customers from the client's own knowledge base, looks up live order and account data, and hands off to human agents in Zendesk with full context.\nThis suits an engineer who wants to ship production AI, not just prototypes, and who cares about accuracy and safety as much as speed.\n\nWhat We Offer:\n\nFlexible work schedule: Manage your own time and work at your own pace.\n\nFully remote: Work from anywhere in the world.\n\nComprehensive leave policy: All official holidays, 20 days of paid vacation, and 10 sick days without needing a doctor's note. [confirm]\n\nHands-on product work: You will work directly with the founder and the client team, with weekly syncs and a demo at the end of each milestone.\n\nKey Requirements:\n\n4+ years of backend engineering experience, with strong Python (FastAPI or similar)\n\nHands-on experience building LLM features in production, including tool calling, prompt design and output evaluation\n\nPractical RAG experience: chunking, hybrid search, source citations, and knowing when a model should decline to answer\n\nExperience integrating with third-party REST APIs, including authentication, retries and error handling\n\nAutomated testing discipline, with unit and integration coverage targets you can explain\n\nA working understanding of GDPR and of protecting personal data in logs and prompts \n\nStrong communication and soft skills\n\nProficiency in spoken and written English\n\nKeen attention to detail\n\nA desire to learn and grow professionally\n\nPreferred Qualifications:\n\nExperience with the Zendesk or Notion APIs\n\nExperience with LLM tracing and evaluation tools such as Langfuse\n\nExperience with prompt-injection defence or red-teaming\n\nExperience with EU cloud hosting and PostgreSQL with pgvector\n\nA React background for an embeddable chat widget\n\nHow to apply: Send a short note on the most relevant agent or RAG system you have built, a link to code or a demo if possible, and your availability.","description_format":"text","description_chars":2160,"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":["Flexible 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