Senior Full-Stack Engineer

Job Location WARSAW PLANT & GO Job Description We are building an AI-powered data platform at P&G that transforms how individuals/teams interact with their data by moving beyond static dashboards to a conversational, action-oriented experience. The platform enables users to "chat with their data" against Power BI semantic models, Databricks, and other enterprise data sources. We are looking for a Senior Engineer to own the technical architecture and development of this platform from the React/TypeScript frontend to the LLM integration layer. You will also mentor junior developers and help grow the team's capabilities in modern web development and applied AI. Job Responsibilities: Architect and build a production-grade web application using React, TypeScript, and TanStack (Router, Query) as the unified interface for conversational data exploration and actionable workflows, Design and implement "chat with your data" features using LLMs (Azure OpenAI), streaming chat interfaces (e.g., Vercel AI SDK), and structured context management strategies to maintain accuracy across multi-turn conversations, Build LLM orchestration layers that manage context injection, prevent context degradation, and ensure high-quality responses as conversation complexity grows, Develop API services and server-side logic (TypeScript/Node.js, Python a plus) that orchestrate between the frontend, LLM providers, and enterprise data sources, Implement agentic AI patterns, function calling, tool use, and multi-step reasoning, to enable intelligent data exploration beyond simple Q&A, Translate business requirements into technical solutions by collaborating with analytics teams, data engineers, and business stakeholders, Lead and mentor junior developers, establish coding standards, code review practices, and a culture of continuous learning, Champion engineering best practices: CI/CD, Git-based workflows, testing, and secure development — ensuring the platform is reliable, scalable, and maintainable. Job Qualifications Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field, Experience with building production web applications with React and TypeScript, Experience with Power BI, semantic models, DAX, Power BI Embedded, or REST APIs, Hands-on experience with LLM integration, prompt engineering, context window management, multi-turn conversation orchestration, and streaming chat interfaces, Proficiency with LLM frameworks and tools: Vercel AI SDK, LangChain, Azure OpenAI / OpenAI APIs, or similar, Strong understanding of context management strategies, preventing context degradation over extended conversations through structured prompting, summarization, and selective context injection, Strong backend skills in Node.js and/or Python, building APIs, async workflows, and service integrations, Experience with state management and server-state patterns (TanStack Query, SWR, or similar), Demonstrated ability to lead and mentor junior engineers, Strong problem-solving skills and ability to work autonomously in ambiguous, fast-moving environments, Excellent communication skills, able to explain technical concepts to non-technical stakeholders. Nice to Have Experience with Databricks, Spark, or similar data platforms, Experience with TanStack Start or similar full-stack React meta-frameworks (Next.js, Remix), Knowledge of vector databases (Pinecone, Weaviate, Azure AI Search) for retrieval-augmented workflows, Experience with Azure cloud services (Azure Containerized Apps, Azure App Service, Azure AI), Background in data engineering, pipelines, ETL, SQL. What we offer Responsibilities as of day 1. You will have project ownership and autonomy to deliver change and results from the beginning. Dynamic and encouraging work environment. At P&G our employees are at the core, we value every individual and encourage initiatives, promoting agility and work/life balance. Continuous mentoring, you will work with hardworking people and receive ongoing coaching and mentoring from your line manager and other colleagues. Corporate and functional training will enable you to succeed and develop from day one. Industry Certifications (ITIL, DevOps, MS portfolio etc), full additional benefit program like private health care, P&G Dynamic Living programs like sport cards, in-office fitness center, PG stock options, saving plans, lunch subsidy, regular salary increases and possible promotions, flexible work arrangements, mentoring programs & trainings. Big Picture understanding of P&G IT and Product Supply organization and its Services in global multi-functional teams with several locations across continents. At P&G we strive to build a culture where everyone feels welcome, included, and able to bring their full selves to work. We ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process. Please click here if you require an accommodation during the application process. Please make sure to wait to hear back from us regarding your accommodation before proceeding with the online assessment, we thank you in advance for your patience. Kindly be advised that at P&G, employment is exclusively extended on the basis of "Umowa o Pracę" (Full-time Employment Contract). Apply only if you agree to these conditions. Job Schedule Full time Job Number R000142689 Job Segmentation Experienced Professionals P&G was founded over 180 years ago as a simple soap and candle company. Today, we're the world's largest consumer goods company and home to iconic, trusted brands that make life a little bit easier in small but meaningful ways. We've spanned three centuries thanks to three simple ideas: leadership, innovation and citizenship. The insight, innovation and passion of talented teams has helped us grow into a global company that is governed responsibly and ethically, that is open and transparent, and that supports good causes and protects the environment. This is a place where you can be proud to work and do something that matters.