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: 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