Principal Engineer

Harvey Nash
London, United Kingdom
Last month
£100,000 – £150,000 pa
Applications closed

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Posted
9 Sep 2026 (Last month)

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.

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What Is an AI Forward Deployed Engineer? The Fastest-Growing Job in AI for 2026

If you have been watching AI job boards over the past year, one title keeps surfacing again and again: the forward deployed engineer, or FDE. It has gone from a niche term known mainly to Palantir alumni to arguably the hottest role in the entire AI hiring market. Job postings for forward deployed engineers have exploded, salaries have climbed past levels most software engineers will ever see, and the biggest names in AI — OpenAI, Anthropic, Google, Salesforce, Databricks and Palantir — are all competing for the same small pool of talent. So what exactly is an AI forward deployed engineer, why has demand surged so dramatically, and how do you position yourself to land one of these roles? This guide breaks it all down for AI engineers, software engineers and data scientists looking at their next move.