AI Engineer

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:
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Design and build RAG and automation workflows inside our VPC environment.

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Create integrations across engineering, communication, and knowledge-management systems (Jira, Confluence, Slack, Google Drive, Git).

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Develop AI-powered pipelines for code quality checks, ticket auto-classification, documentation updates, release notes, and meeting summaries.

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Work on prompt engineering, model selection and routing (Haiku / Sonnet / Opus), and workflow optimization.

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Build evaluation and regression frameworks for AI workflows to prevent model-upgrade regressions.

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Create lightweight dashboards for engineering leads to surface delivery patterns and bottlenecks.

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Own initiatives end-to-end: scope → design → ship → measure → iterate.

It’s all about you:
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5+ years of production experience with Python (services, async, API integrations, clean and testable code).

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Hands-on experience with LLM APIs in production: Anthropic Claude (Opus/Sonnet/Haiku), OpenAI, AWS Bedrock.

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Strong understanding of RAG systems: chunking, embeddings, hybrid search, re-ranking, grounding/citations.

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Prompt engineering + structured outputs + tool/function calling.

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Experience with eval/regression frameworks: Promptfoo, Ragas, LangSmith, or custom evaluation harnesses.

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Agentic patterns: ReAct, function-calling loops, fallbacks.

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Vector databases: pgvector, Pinecone.

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Workflow orchestration: n8n, Airflow, or custom orchestration systems.

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Observability: token-spend tracing, latency monitoring, model routing.

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Solid AWS fundamentals: IAM, Lambda, S3, CloudTrail — comfortable deploying inside VPC environments independently.

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CI/CD + pipeline hooks (GitLab/GitHub), webhooks, event-driven architectures.

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Basic SQL skills for analytical queries and metrics dashboards.

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Driver mindset: proactively identifies the highest-leverage opportunity and drives it to production

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B2 English level

Would be a plus

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Real REST integrations with 2–3+ APIs

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Experience with workflow orchestration tools.

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Prompt evaluation tooling such as LangSmith is nice to have

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Experience with Docker

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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

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• Comfortable working environment:

• Work from our Kyiv hub or remotely with a flexible schedule

• Modern equipment or depreciation of your own tools

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• 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:
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Intro call

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Technical Interview

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Final Interview

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Reference check

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Offer