Principal Software Engineer - API & Microservices Leader

Dex; United Kingdom; On-site; GBP 120,000 - 180,000; Full time

Job summary

Dex partners with a fast-growing company building the definitive API for global tax automation. You will join a lean engineering team, co‑own the roadmap with product, and operate what you build in production.

The work centers on designing, building, and operating mission‑critical REST APIs powering enterprise compliance. You’ll ship across the stack—Node.js/TypeScript, Go, and ReactJS—and drive architecture decisions to scale with the business.

Qualifications

• Proven experience designing and scaling microservices in high-growth environments.
• Owns code quality, testing, and production readiness with a builder mindset.
• Fluent in English, strong communication across teams.
• Expertise with Node.js/TypeScript, Go or ReactJS on full-stack roles.

Responsibilities

• Design, build, and operate mission‑critical REST APIs powering global tax compliance.
• Take full ownership of products from ideation through delivery and iteration.
• Ship across the stack from backend to customer-facing interfaces.
• Drive architectural decisions to ensure scalability and reliability.
• Promote continuous delivery, shipping fast with high quality standards.

Skills

Node.js/TypeScript

Go

ReactJS

REST APIs

Microservices

Job description

Dex partners with a fast-growing company building the definitive API for global tax automation. You will join a lean engineering team, co‑own the roadmap with product, and operate what you build in production.

The work centers on designing, building, and operating mission‑critical REST APIs powering enterprise compliance. You’ll ship across the stack—Node.js/TypeScript, Go, and ReactJS—and drive architecture decisions to scale with the business.