Principal Software Engineer - End-to-End API Architect

Dex; United Kingdom; On-site; GBP 120,000 - 170,000; Full time

Job summary

Dex presents a principal-level opportunity with a partner company building a definitive API for global tax automation. You will co-own the roadmap with product, drive architecture, and operate what you build in production.

This is not a ticket-taker role; it defines the technical bar and shipping velocity across the full product lifecycle. You will ship across the stack with Node.js/TypeScript, Go, and ReactJS, owning scalability, reliability, and end-to-end delivery in a fast-growing

Qualifications

• Fluency with Node.js/TypeScript, Go, or ReactJS across the stack.
• Proven experience scaling and operating large-scale microservices in high-growth environments.
• A strong sense of ownership: ensure code is tested and production systems are clean.
• Builder mindset: ship fast, data-driven and iteratively.
• Full professional proficiency in written and spoken English.

Responsibilities

• Design, build, and operate mission-critical REST APIs powering global tax compliance for enterprises.
• Take ownership from ideation through delivery, gaining deep customer insight.
• Ship across the stack from Node.js/TypeScript and Go to ReactJS interfaces.
• Drive architectural decisions for scalability and reliability in a high-growth environment.
• Champion continuous delivery with high quality standards.

Skills

Node.js/TypeScript

Go

ReactJS

Job description

Dex presents a principal-level opportunity with a partner company building a definitive API for global tax automation. You will co-own the roadmap with product, drive architecture, and operate what you build in production.

This is not a ticket-taker role; it defines the technical bar and shipping velocity across the full product lifecycle. You will ship across the stack with Node.js/TypeScript, Go, and ReactJS, owning scalability, reliability, and end-to-end delivery in a fast-growing