Full Stack Engineer

Company: Mentmore

Location: London

Posted: April 11th, 2026

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This range is provided by Mentmore. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

Full Stack Engineer

DESCRIPTION

As a scale up, the engineering organisation will grow considerably by end FY24/25. To start, we adapted an existing platform to address a new market opportunity and prove our commercial thesis. With this achieved, we secured funding to support our expansion and have embarked on an ambitious scaling of our product engineering team that will rapidly evolve our platform using the latest cloud-native and full-stack technologies to achieve a leadership position in our selected markets. We seek ambitious product engineers (not just software developers) with experience in cloud-native approaches that can shape our platform strategy and accelerate our product development plans.

THE ROLE

As a Full Stack Product Engineer for our client, you will play a pivotal role in developing new product solutions and features within our modern product squad. You will utilise your skills in React, TypeScript, C#, and .Net to deliver comprehensive and innovative solutions. You will create new products and features that drive our platform forward and contribute to the ongoing complex modernisation and migration from our .Net Framework platform to a microservices architecture based on .Net Core.

You will work closely with the product owner, lead engineers, stakeholders, and customers to refine requirements and deliver high-quality solutions. Your contributions will enhance our cloud-based treasury management system, fostering rapid innovation and improving both user experience and platform capabilities.

As an experienced or regular engineer, you are expected to work independently, delivering high-quality solutions to our stakeholders. Within a squad environment, you will translate complex requirements into engineered solutions. Joining a team of ambitious product experts, your contribution will be pivotal in establishing a world-class engineering organization and cementing our leadership in the marketplace.

YOUR RESPONSIBILITIES

Requirements

Seniority level

Mid-Senior level

Employment type

Full-time

Job function

Information Technology

Industries

Insurance and Financial Services

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