AI Engineer at vacancies

About the company: United Tech is a global IT product company shaping the future of real-time social connection. With millions of users across North America, Europe, LATAM, and MENA, we build next-gen mobile and web apps for live-streaming and social networking. Our platforms enable connection at scale fast, interactive, and deeply engaging. The market is projected to exceed $206B by 2030, and we are already leading the evolution. Founded in Ukraine, scaling worldwide About your role: We’re looking for an AI Engineer who wants to build production-grade AI systems, not just experiment with demos. This is a high-ownership, greenfield role where you’ll help build our AI platform from scratch, working directly with the Head of AI.  You’ll own initiatives end-to-end — from discovery and architecture decisions to production delivery — and play a key role in shaping how AI is used across the company. You’ll work with a modern AI stack including Claude/OpenAI/Bedrock, RAG pipelines, eval frameworks (Promptfoo, Ragas, LangSmith), and agentic patterns. This role is ideal for someone who enjoys autonomy, strong engineering ownership, and proactively identifying the next highest-leverage opportunity to drive into production. In this role, you will • Design and build RAG and automation workflows inside our VPC environment. • Create integrations across engineering, communication, and knowledge-management systems (Jira, Confluence, Slack, Google Drive, Git). • Develop AI-powered pipelines for code quality checks, ticket auto-classification, documentation updates, release notes, and meeting summaries. • Work on prompt engineering, model selection and routing (Haiku / Sonnet / Opus), and workflow optimization. • Build evaluation and regression frameworks for AI workflows to prevent model-upgrade regressions. • Create lightweight dashboards for engineering leads to surface delivery patterns and bottlenecks. • Own initiatives end-to-end: scope → design → ship → measure → iterate. It’s all about you • 5+ years of production experience with Python (services, async, API integrations, clean and testable code). • Hands-on experience with LLM APIs in production: Anthropic Claude (Opus/Sonnet/Haiku), OpenAI, AWS Bedrock. • Strong understanding of RAG systems: chunking, embeddings, hybrid search, re-ranking, grounding/citations. • Prompt engineering + structured outputs + tool/function calling. • Experience with eval/regression frameworks: Promptfoo, Ragas, LangSmith, or custom evaluation harnesses. • Agentic patterns: ReAct, function-calling loops, fallbacks. • Vector databases: pgvector, Pinecone. • Workflow orchestration: n8n, Airflow, or custom orchestration systems. • Observability: token-spend tracing, latency monitoring, model routing. • Solid AWS fundamentals: IAM, Lambda, S3, CloudTrail — comfortable deploying inside VPC environments independently. • CI/CD + pipeline hooks (GitLab/GitHub), webhooks, event-driven architectures. • Basic SQL skills for analytical queries and metrics dashboards. • Driver mindset: proactively identifies the highest-leverage opportunity and drives it to production • B2 English level Would be a plus • Real REST integrations with 2–3+ APIs • Experience with workflow orchestration tools. • Prompt evaluation tooling such as LangSmith is nice to have • Experience with Docker • RAG experience: embeddings and vector stores (pgvector, Pinecone, or similar) for knowledge base use cases What we offer • 20 paid vacation days, 15 sick days, and 6 additional days off for family events • Up to 10 additional days off for public holidays • 100% medical insurance coverage • Sports and equipment reimbursement • Team building events, corporate gifts, and stylish merch • Financial and legal support • Maternity recovery support allowance • Position retention and support for those who join the Armed Forces of Ukraine • Participation in social initiatives supporting Ukraine Comfortable working environment: • Work from our Kyiv hub or remotely with a flexible schedule • Modern equipment or depreciation of your own tools Investment in your future: • Collaborate with a highly-skilled team of Middle & Senior professionals, sharing practical cases and expertise in the social networking niche • 70% of our heads and leads have grown into their roles here – so can you! • Performance-oriented reviews and Individual Development Plans (IDPs) • Reimbursement for professional courses and English classes • Corporate library, book club, and knowledge-sharing events Hiring process • Intro call • Technical Interview • Final Interview • Reference check • Offer