Middle AI Agent Engineer

Langate is an award-winning provider of web development services in 3 main categories: business, healthcare, and education. At Langate , we're passionate about crafting digital solutions that make a real impact. We take immense pride in our strong collaboration with the U.S. We're here to shape the future of technology, one milestone at a time. In addition to technical expertise, we value strong communication, autonomy, and a high level of business orientation. This role requires close collaboration with stakeholders, proactive requirement discovery, and the ability to work effectively in a fast-changing environment without waiting for fully documented inputs. To thrive in this role, we’re seeking candidates with 2–3+ years of commercial engineering experience, hands-on experience building AI agent solutions, strong Python and/or TypeScript fundamentals, and the ability to design custom tool-using agent loops from scratch. Experience with agent frameworks, evaluation systems, and observability tooling will be a strong advantage. About the project : The project is focused on building production-grade AI agent capabilities for the U.S. healthcare domain. The engineer will work on agentic product features, legacy-system integrations, and supporting components such as scrapers and tool layers, helping automate complex workflows in an environment with significant real-world business impact. Requirements: 2–3+ years of commercial engineering experience Ability to build a tool-using agent loop from scratch, including tool calling, structured outputs, stop reasons, parallel tool use, and error recovery Strong understanding of context engineering, including what to write, select, compress, and isolate Hands-on experience with modern agent frameworks or SDKs such as LangGraph, Claude Agent SDK, OpenAI Agents SDK, or Pydantic AI Working knowledge of Model Context Protocol (MCP) Experience building or extending evaluation harnesses, solid Python and/or TypeScript skills, and Upper-Intermediate English Responsibilities: Design and implement agentic features end-to-end, from prototype to production. Build and maintain agent loops, tool layers, context management, persistence, sub-agent orchestration, observability, and safety hooks. Define quality standards for agent performance by creating golden datasets, writing evaluations, and setting up regression checks. Instrument agents with proper tracing and telemetry, and investigate production behavior using real execution traces. Work directly with client stakeholders to elicit and refine requirements, translate them into technical scope, and align on expected outcomes. Make pragmatic build-versus-import decisions when selecting frameworks, tools, and external components. Participate in architecture discussions and code reviews, contributing to scalable and production-ready engineering decisions. Move between projects and priorities as needed, taking ownership of delivery in a fast-changing environment with a high degree of autonomy. Schedule : 5/2, 8-hour working day (40 hr per week), flexible schedule. Hiring process : HR interview + tech specialists We offer: Competitive compensation B2B contract , paid sick leave, 20 days of paid vacation Free English lessons Flexible work schedule Official Ukrainian holidays are non-working days Paid courses and certifications С oach / psychologist consultation Workshops Career development plan Mentoring Education Medical Health Insurance Why Choose Us? What Do We Offer that's Exceptional? Cutting-Edge Technologies on Real Projects: At Langate, you'll work with the latest technologies on live projects. We're a dynamic, fast-growing company, so you'll find a minimal amount of legacy systems and plenty of opportunities to implement new technologies. Work-Life Balance with Benefits: We value work-life balance and offer paid time off, including vacation days and sick leave. Remote work options and hearty life are part of the package too. Investment in Your Growth: We're committed to your professional development. You can expect training programs, courses, and opportunities to enhance your English language skills. Team Building and Unity: We know that a happy team is a productive team. That's why we organize team-building events and group activities to foster strong bonds and a sense of belonging. When you choose us, you're choosing a company that values innovation, invests in its employees, and provides a supportive and engaging work environment. Join us in shaping the future of technology! Need more information? Welcome!