Senior Software Engineer

A product-led SaaS business is hiring a

**Senior Back End Engineer**

to help build and evolve its platform, with a strong focus on modern AI-assisted development workflows.

This is a hands-on role suited to someone who is already leveraging AI engineering tools day to day to improve speed, quality, and output. The environment is

**TypeScript / JavaScript heavy**

, with some legacy

**PHP**

, so you will be working across both modern and existing systems while helping move the platform forward.

**Role:**

Senior Back End Engineer

**Salary:**

Up to £70,000

**Location:**

Fully remote, UK-based

**What you’ll be doing:**

• Building and maintaining backend APIs and services across a modern TS / JS stack
• Working alongside legacy PHP systems, helping evolve and modernise the platform
• Using AI engineering tools to accelerate development, debugging and delivery
• Designing scalable services and clean system boundaries
• Integrating third-party APIs including AI, analytics and external services
• Collaborating closely with product and UX teams to shape features early
• Contributing to architecture decisions and technical direction

**What you’ll need:**

• Strong commercial backend engineering experience
• Solid experience with TypeScript and JavaScript in production environments
• Experience working with or alongside PHP systems
• Active, hands-on use of AI engineering tools such as Claude, ChatGPT or similar in your development workflow
• Strong API development skills and understanding of system design
• Experience integrating third-party services and APIs
• Comfortable working in fast-moving product environments

**What’s on offer:**

• Salary up to £70,000
• Fully remote working within the UK
• Opportunity to work in an AI-forward engineering environment
• High ownership role with influence on technical direction
• A modern product environment with ongoing platform evolution

This role would suit an engineer who is already embedding AI into their development workflow and wants to work in a team where that approach is expected, not optional.