Founding Full Stack Engineer — Build Critical Infra

Praetori; Haarlem; Hybrid; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Meaningful equity

Performance bonus

Hybrid work environment

Job summary

Praetori is hiring a Founding Full Stack Developer to own significant parts of the product end to end. You will design architecture, interfaces, data flows and performance, building scalable, legible systems that endure under pressure.

You’ll collaborate across product, design, and forward deployed engineers to ship production-ready features. Ideal candidates ship fast, care about UX and product outcomes, and demonstrate high ownership with strong English communication.

Qualifications

• You can point to a production system you built end to end that people use daily.
• Deep TypeScript expertise across the stack, with strong React and Next.js on the front end.
• Solid backend engineering in Node.js: APIs, data modelling and services built to last.
• A record of shipping production software that is genuinely fast, reliable and well-crafted.
• Sound architectural judgement. You keep systems simple as they scale.
• Real care for UX and product outcomes, not just code that compiles.
• High ownership and high standards, even under deadline. Fluent English.

Responsibilities

• 01 Design and build core product features end to end, from data model and API to interface.
• 02 Build interfaces in TypeScript, React and Next.js that stay clear and responsive under pressure.
• 03 Design backend services and APIs in Node.js that are correct, observable and fast.
• 04 Make architecture decisions that keep the system scalable and the codebase pleasant to build on.
• 05 Treat performance as a feature. Latency, responsiveness and reliability are part of the product.
• 06 Bring product thinking. Help decide what to build and why, not only how.
• 07 Work with design to turn complex operational workflows into interfaces that feel inevitable.
• 08 Harden field prototypes from forward deployed engineers into production-grade features.

Skills

TypeScript

React

Next.js

Node.js

Performance engineering

Architecture

UX focus

Fluent English

Job description

Praetori is hiring a Founding Full Stack Developer to own significant parts of the product end to end. You will design architecture, interfaces, data flows and performance, building scalable, legible systems that endure under pressure.

You’ll collaborate across product, design, and forward deployed engineers to ship production-ready features. Ideal candidates ship fast, care about UX and product outcomes, and demonstrate high ownership with strong English communication.