Principal Engineer

Harvey Nash Group; Greater London; Hybrid; GBP 90,000 - 150,000; Full time

Job summary

Harvey Nash Group in London is seeking a Principal Engineer to build new digital fintech products from the ground up, with hands-on leadership to guide an engineering squad, shape architecture and mentors engineers while staying actively involved in coding.

The role focuses on production ownership, modern engineering practices, APIs and microservices, event-driven designs and AI-driven SDLC integration within a regulated fintech environment, with hybrid working and a salary up to £150k.

Qualifications

• 7-8+ years of software engineering with principal/staff/tech-lead experience.
• Strong system design and technical leadership.
• Full-stack experience across front-end and back-end tech.
• Experience with APIs, microservices and event-driven architecture.
• Production ownership and modern engineering practices.
• Experience using AI integrated into the SDLC.

Responsibilities

• Lead an engineering squad and shape architecture.
• Make key technical decisions and mentor engineers.
• Stay hands-on with engineering digital fintech products.

Skills

System design & technical leadership

Full-stack engineering

Production ownership

AI in SDLC

Architectural governance

Tools

Java/Spring Boot

React/TypeScript

React Native

Azure

Kubernetes

Terraform

CI/CD

Kafka

ArgoCD/GitOps

Job description

Principal Engineer | Financial Services | London | Permanent | Hybrid | up to £150k

I'm working on an exciting opportunity for a Principal Engineer to build new digital fintech products from the ground up (Greenfield).

This is a genuinely hands-on Principal role - you'll lead an engineering squad, shape architecture, make key technical decisions, mentor engineers and stay hands on engineering digital products.

Required:

• 7-8+ years' software engineering experience, with experience leading as a principal, staff level or tech lead.
• Strong system design & technical leadership
• Full-stack experience
• Key Technologies: Java/Spring Boot, React/TypeScript and React Native, Azure (AWS or GCP is fine), Kubernetes, Terraform & CI/CD
• APIs, microservices & event-driven architecture.
• Production ownership & modern engineering practices.
• Experience using AI - integrated into the SDLC.

The environment is seriously modern: Java, React/TypeScript, React Native, AKS, Kafka, Temporal, Databricks, Terraform, ArgoCD/GitOps, Azure AI Foundry & more.

We're open to exceptional engineers from Banking, Financial Services and other regulated environments (a strong fit from a SaaS, technology, e-commerce will also be considered). If you're a Principal, Staff or Lead Engineer who wants to build new greenfield digital fintech products - I'd love to speak with you.