Available to hire
I’m Yuki Mori, a Senior AI Engineer focused on retrieval-augmented generation (RAG), NLP, and workflow automation. I build production-grade data pipelines and AI systems that improve accuracy, reduce latency, and automate operations in cloud environments. I thrive on turning complex problems into robust, scalable solutions that deliver measurable business impact.
I enjoy solving hard problems by combining LLMs, vector databases, and automation to create reliable, extensible AI systems. I’m passionate about clear instrumentation, security, and thoughtful UX in AI-powered applications.
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Language
English
Fluent
Polish
Fluent
Work Experience
Full Stack Engineer at Ad Astra
June 3, 2025 - May 20, 2026I am a full-stack developer with 6+ years of
experience focusing on building clean, scalable, and
intuitive apps. I am skilled in React, experience
designing simple yet powerful merchant TypeScript,
Node.js, and MongoDB, and have experiences. I am
skilled in API integrations and app architecture, and
work across departments to transform product
ideas into high-quality development compatible
features.
Senior Full Stack & Shopify Developer
January 20, 2024 - PresentDesigned and developed merchant-centric Shopify apps using React, TypeScript, and Polaris components. Engineered robust REST and GraphQL integrations with Shopify Admin APIs and external services. Built a modular backend with Node.js, Express.js, and MongoDB to support flexible merchant data models. Implemented real-time data updates via webhooks and background job processors. Wrote unit and integration tests to ensure reliability across deployments. Collaborated in a cross-functional squad including product managers and UI designers.
Senior Full Stack Developer
August 20, 2021 - PresentCreated internal tools and Shopify-like dashboards using React, Express, and MongoDB. Developed automated workflows for inventory management and custom report generation. Connected store data via secure API endpoints and streamlined data handling pipelines. Enhanced user experience by implementing form validation, auto-complete inputs, and modal UX for merchants. Built reusable RESTful APIs and data models to support scalable features.
AI Developer Intern at Narrates Limited
March 1, 2018 - March 1, 2019Assisted in developing an RAG prototype combining LLMs with a vector database to deliver context-aware internal search and more reliable answers. Built eight new workflows to automate data ingestion, embedding, retrieval, and inference with retrievers, backoffs, and alerting to streamline demos. Tuned prompts and retrieval parameters, and performed targeted evaluation with golden sets to improve relevance and stability across queries.
AI Developer at Bilby
November 1, 2019 - May 1, 2022Shipped production Retrieval-Augmented Generation pipelines combining LLMs with FAISS/Pinecone and hybrid BM25+ vector retrieval with cross-encoder ranking. Built and maintained eight autonomous workflows for ingestion, embedding, retrieval, and inference with retrievers, backoffs, and alerting for high reliability. Tuned prompts, retrieval parameters, and query rewriting logic to strengthen precision, recall, and throughput at scale. Established robust evaluation and observability frameworks with golden sets, A/B testing, and dashboards for continuous optimization. Implemented CI/CD integration with production guards, ensuring 99.95% uptime and <0.20% error rate across services.
Backend Engineer (AI Voice Platform) at Merlin Digital Hero
August 1, 2020 - November 1, 2021Built backend services in Node.js/Express to orchestrate multiple LLM engines and enforce user subscriptions/entitlements. Integrated real-time search and summarization: on any visited page, Merlin extracts context, calls model APIs, generates summaries, and renders results in an in-page overlay. Ensured security and privacy by implementing robust authentication (OAuth flows), encryption at rest/in transit, and GDPR-aligned safeguards.
Backend Engineer at Merlin Digital Hero
May 1, 2022 - February 1, 2023Implemented production-grade backend services in Node.js/Express to orchestrate multiple LLM engines and enforce user subscriptions/entitlements. Tuned prompts, retrieval parameters, and query rewriting logic to improve accuracy, recall, and throughput across large-scale evaluations. Established robust evaluation and observability frameworks with golden sets, A/B testing, and cost/performance dashboards for continuous optimization. Implemented CI/CD pipelines and runtime guardrails to achieve 99.95% uptime and <0.2% error rate across services.
Education
Bachelor of Science at Lodz University of Technology
September 1, 2023 - September 1, 2025Bachelor of Science in Computer Science (Machine Learning Concentration) at Lodz University of Technology
September 1, 2016 - August 1, 2019Qualifications
Industry Experience
Software & Internet, Media & Entertainment, Professional Services, Other
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
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