Senior Engineer - Agentic Systems (Greenfield, Remote UK)

Next 15 Group Plc; Greater London; On-site; GBP 70,000 - 110,000; Full time

Benefits offered by this job

25 days leave

Life assurance

Healthcare plan

Cycle to work

Job summary

Next 15 Group plc is seeking a Senior Engineer for its Agentic Systems squad based in the UK. The role is fully remote across the UK with travel to London about once per month.

You’ll shape, build and operate an early-stage platform, taking ownership from shaping to production and mentoring other engineers. We expect you to turn ambitious visions into practical technical direction, make trade-offs, and deliver focused vertical slices that create real business value while maintaining security,

Qualifications

• Strong experience building production-grade software with TypeScript and Node.js.
• Proven ability to own ambiguous, greenfield initiatives from shaping to production.
• Experience designing and consuming third-party API integrations.
• Familiarity with authentication, permissions, identity and secure data handling.
• Mentoring or leading engineers in a product development environment.

Responsibilities

• Turn vision into practical technical direction in a greenfield setting.
• Own substantial parts of the platform from early shaping to production.
• Lead architectural decisions and trade-offs with partial information.
• Design secure, observable, and maintainable systems.
• Build production-grade TypeScript/Node.js services and integrations.
• Mentor other engineers and establish team practices.
• Collaborate with product to identify workflows worth solving.
• Deliver narrow, testable vertical slices creating real business value.
• Ensure tracing, logging and auditability.

Skills

TypeScript

Node.js

Production software

APIs & integrations

Mentoring engineers

Greenfield projects

Tools

LLM APIs

Tool call frameworks

Retrieval systems

Job description

Next 15 Group plc is seeking a Senior Engineer for its Agentic Systems squad based in the UK. The role is fully remote across the UK with travel to London about once per month.

You’ll shape, build and operate an early-stage platform, taking ownership from shaping to production and mentoring other engineers. We expect you to turn ambitious visions into practical technical direction, make trade-offs, and deliver focused vertical slices that create real business value while maintaining security,