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Fernando Cueto

@fernandocueto

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Full Stack Engineer specializing in AI-native systems and LLM-powered products.

Germany

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What I'm looking for

I seek roles building AI-native or LLM-powered products where I can drive product impact, mentor teams, and deliver scalable, production-grade systems.

I am a Full Stack Engineer with 10+ years building and scaling production web platforms, specialized in AI-native and AI-augmented systems. I design and implement LLM-powered solutions—RAG pipelines, prompt orchestration, and evaluation-driven iteration—using a strong JavaScript/TypeScript and Node.js background complemented by Python for AI workflows.

I have delivered measurable impact across high-traffic e-commerce and enterprise applications, driving a +12% conversion uplift and faster feature delivery through reusable components, TDD, and CI practices. I mentor distributed teams, work across AWS/Azure and containerized environments, and continuously extend projects with LLM-powered features to improve user experience and operational efficiency.

Experience

Work history, roles, and key accomplishments

Current

Senior Full Stack Engineer

Current

Neatstack

Jul 2024 - Present (1 year 6 months)

Implemented AI-powered features using LLMs as core components, building RAG pipelines to enhance data access and decision-making workflows.

TypeScript React Python MongoDB LLM Docker

Senior Full Stack Developer

Oceans Apart

May 2023 - Dec 2024 (1 year 7 months)

Led feature delivery for a high-traffic e-commerce platform serving 50k+ users, driving a 12% conversion uplift and improving SEO and accessibility.

PHP Laravel WordPress Vue.Js Docker SEO

Senior Frontend Developer

Krieger Digital

Sep 2022 - Mar 2023 (6 months)

Developed React-based e-commerce interfaces and APIs, reducing feature delivery time by ~17% through reusable components and CI-driven testing.

React TypeScript Component Libraries CI CD Docker API Integration

Senior Full Stack Developer

Gorilla Logic

Sep 2020 - Sep 2022 (2 years)

Oversaw feature delivery for enterprise web applications, shortening delivery time by 9% and improving reliability via TDD and legacy-to-modern transitions.

.NET C++React Docker Kafka TDD