Founding Fullstack Engineer (AI)

Pragmatike

15h•Remote

About The Position

Pragmatike is recruiting on behalf of an early-stage, venture-backed startup in Europe building an AI-native B2B SaaS product. The company is developing a data-driven platform powered by modern AI technologies, with a strong focus on scalability, product experience, and intelligent automation. The product is already live, and the team is now focused on scaling, improving core features, and strengthening its technical foundation. The environment is fast-paced, product-driven, and highly collaborative. We’re looking for a Fullstack Engineer who is a strong builder and comfortable working across the stack, with a modern AI-assisted development workflow (e.g. Cursor, Claude Code, or similar tools). This is a hands-on, product-focused role — you’ll be shipping features end-to-end, contributing to both frontend and backend systems, and leveraging AI tools to move fast and build efficiently. You’ll work closely with the founders to scale the platform, improve user experience, and integrate AI-driven capabilities into the core product.

Requirements

3–8+ years of experience in software engineering (fullstack or backend-leaning)
Strong ability to build and ship products end-to-end
Comfortable working across the stack (language-agnostic mindset)
Experience using modern AI coding tools (e.g. Cursor, Claude Code, Copilot, etc.)
Experience integrating or building AI/LLM-powered features
Solid understanding of APIs, system design, and scalable architectures
Experience with cloud environments (AWS or similar)
Familiarity with data pipelines and third-party integrations
Strong ownership, autonomy, and product mindset
Ability to thrive in a fast-paced startup environment
Fluent English required

Nice To Haves

Experience with graph-based systems or recommendation engines
Exposure to Graph RAG, knowledge graphs, or AI agents
Experience in fintech, marketplaces, or data-heavy products
Experience with CRM, email, or LinkedIn integrations
Background in early-stage or startup environments
Track record of shipping products from 0 → 1 or scaling early products

Responsibilities

Build and ship end-to-end product features across frontend and backend
Develop scalable backend services and APIs
Contribute to frontend applications with a strong focus on UX and performance
Integrate AI-powered features into the product (LLMs, workflows, automation)
Use AI coding tools (Cursor, Claude Code, etc.) to accelerate development and productivity
Improve and maintain data pipelines (email, LinkedIn, CRM integrations)
Optimize onboarding flows and drive fast “aha moments” for users
Collaborate on system design, architecture, and technical decisions
Ensure performance, reliability, and scalability of the platform
Work closely with founders on product direction and iteration cycles