Senior Software Engineer

Evantis Technology; Remote; GBP 125,000 - 150,000; Full time

Job summary

A fast-moving tech company is seeking a Senior Backend / Full Stack Engineer to join their integrations-focused engineering team. This fully remote role emphasizes building scalable solutions using Node.js and TypeScript, while designing and implementing partner integrations. Ideal candidates should have strong backend engineering experience and enjoy operating autonomously in a dynamic environment. Join a greenfield project and own features end-to-end while collaborating closely with product teams.

Qualifications

• Strong hands-on backend engineering experience at a senior level.
• Deep practical experience with Node.js and TypeScript.
• Experience integrating with external systems or third-party APIs.

Responsibilities

• Build backend services and APIs using Node.js and TypeScript.
• Design and implement partner integrations like REST APIs and webhooks.
• Collaborate with product teams while remaining a builder-first IC.

Skills

Node.js

TypeScript

REST APIs

Cloud platforms

CI/CD pipelines

External system integration

Job description

Senior Backend / Full Stack Engineer (Contract) – Integrations Team

Outside IR35 / B2B | Fully Remote

Evantis is partnering with a fast-moving tech company that’s expanding a newly formed integrations-focused engineering team , responsible for how external partners connect into their platform.

We’re looking for hands‑on backend engineers who enjoy building and delivering real production systems — people who are comfortable owning features end to end rather than operating at a purely architectural level.

This is a greenfield scope , with a strong emphasis on delivery and implementation.

What you’ll be doing

• Building backend services and APIs using Node.js and TypeScript
• Designing and implementing partner integrations (REST APIs, webhooks, lightweight plugins)
• Owning end‑to‑end flows including validation, queuing, retries, processing, and responses
• Working with cloud‑native services (GCP environment) to deliver scalable solutions
• Collaborating with principals and product teams while remaining a builder‑first IC
• Operating in a startup‑style environment where priorities can evolve week to week

What we’re looking for

• Strong hands‑on backend engineering experience (senior IC level)
• Deep practical experience with Node.js, TypeScript, REST APIs
• Comfortable explaining and delivering implementation detail , not just high‑level design
• Experience integrating with external systems or third‑party APIs
• Familiarity with cloud platforms and CI / CD pipelines
• Exposure to CMS or partner integrations (WordPress, Shopify, Zapier, etc.) is a bonus , not a requirement
• Enjoys working autonomously and shipping working software

Details

• Location : Fully Remote (UK or EU timezone overlap)
• Engagement : Outside IR35 / B2B
• Start : January
• Interview Process : Single‑stage technical interview (whiteboard + implementation discussion)

If this sounds like a good fit, please apply or reach out directly for more information.