Principal Engineer in London

Energy Jobline ZR; Greater London; Hybrid; GBP 135,000 - 165,000; Full time

Job summary

Energy Jobline ZR in London is seeking a hands-on Principal Engineer to build new digital fintech products from the ground up. You will lead an engineering squad, shape architecture, and make key technical decisions while mentoring engineers and staying hands-on.

The role requires 7-8+ years in software engineering with strong system design, APIs, microservices, and AI integration into the SDLC. Hybrid work in a modern tech stack including Java/Spring Boot, React/TypeScript, Azure, Kubernetes,

Qualifications

• 7-8+ years of software engineering experience, with leadership at principal/staff/tech lead level.
• Strong system design and technical leadership demonstrated.
• Full-stack experience across modern web tech stacks.

Responsibilities

• Lead an engineering squad, shape architecture and key technical decisions.
• Mentor engineers and stay hands-on building digital fintech products.
• Drive greenfield fintech product development in a regulated environment.

Skills

Java/Spring Boot

React/TypeScript

Azure

Kubernetes

Terraform

CI/CD

APIs & Microservices

Event-driven architecture

AI in SDLC

Full-stack

Tech leadership

Job description

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 , 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 , 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.