Principal Back End Engineer | Node.js | up to £120,000

JR United Kingdom; City Of London; Hybrid; GBP 100,000 - 120,000; Full time

Job summary

A leading scale-up in the UK healthcare FinTech sector is seeking a Principal Back End Engineer proficient in Node.js. You will lead a talented team, tackling new challenges to transform healthcare delivery through innovative solutions. The role offers competitive salary, hybrid working, a strong bonus structure and additional benefits.

Benefits

10% bonus

Up to 10% pension

28 days holidays + bank holidays

Health cash plan

4x Life Assurance

Qualifications

• Experience leading a small team of Node.js Engineers.
• Strong understanding of scalable, high-performing systems.
• Experience in healthcare or finance domains.

Responsibilities

• Lead Back End initiatives and coach a team of Node.js Engineers.
• Ensure systems are scalable and deliver real value.
• Work with cross-functional teams to tackle challenges.

Skills

Leadership

Effective communication

Collaboration

Cloud-based architecture

Understanding of security best practices

Tools

AWS

Docker

Terraform

Job description

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Principal Back End Engineer | Node.js | up to £120,000, london (city of london)

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Client:

RedCat Digital

Location:

london (city of london), United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Views:

3

Posted:

16.06.2025

Expiry Date:

31.07.2025

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Job Description:

I am looking for a Principal Back End Engineer (Node.js) to join a scaleup on a mission to transform UK healthcare with their innovative FinTech solutions. At a time when the healthcare system is evolving rapidly, you would be pivotal in building products that focus is on accessibility and affordability for their customers.

As a high-growth start-up, they have launched their initial flagship product and are picking up speed to scale their next phase. It is important to mention that the organisation is part of a larger group meaning that you have all the agility and pace of joining a scale-up but with the stability and security of an established player (who are also a purpose driven B-corp).

What You’ll Do:

• Lead the Back End initiatives as well as coach, guide and inspire a talented team of Node.js Engineers
• Work alongside Product, Design, Operations, and Growth teams to prioritize and tackle customer-facing and internal challenges.
• Ensure systems that are being built are scalable, extensible, sustainable, and high-performing that deliver real value.
• Experience of leading a small and growing team of amazing Enigneers
• Effective communication, collaboration and leadership skills
• Strong understanding of cloud-based application architecture and stack, preferably including AWS
• Good understanding of Docker and experience with CI/CD tooling
• Good understanding of security and observability best practices and tooling

What else?

• Experience building and maintaining high-traffic server-side web applications
• Experience with infrastructure-as-code tools such as Terraform or CloudFormation
• Experience of working in a fast-paced product-focussed environment
• Good understanding of other programming languages such as Java, C#, C++, Rust, Go or Python
• Experience in healthcare or finance domains

Other stuff

Salary up to £120,000 basic

10% bonus

Hybrid working – 3 days in London (Tues-Thurs) – some flex if needed on times

Up to 10% pension

28 days hols + bank hols

Health cash plan and 4x Life Assurance.

If you are looking to work with some of the best Engineers for a mission led high growth scale-up then please hit “apply”.