Full Stack Engineer

Explore Group; United Kingdom; On-site; GBP 65,000 - 100,000; Full time

Job summary

Explore Group is seeking an experienced Full Stack Engineer to help build and scale its lending platform in the UK fintech space. You will own features end to end, from design to production, across the full stack using React, Next.js, Node.js and TypeScript.

Join a fast-moving early-stage startup rebuilding property lending infrastructure, starting with bridging finance and expanding into specialist term loans.

Qualifications

• 4+ years of commercial software engineering experience across frontend and backend development.
• Strong experience with React, Next.js, Node.js and TypeScript.
• Experience building and maintaining production grade web applications and REST APIs.
• Understanding of relational databases, SQL, data modelling and application security.
• Experience with Git, code reviews, automated testing and CI/CD pipelines.
• Strong understanding of software architecture, performance and maintainable code.
• Comfortable working in an early stage startup where requirements evolve and engineers take ownership.
• Excellent communication skills and the ability to collaborate across technical and non technical teams.
• A degree in computer science, software engineering or a relevant subject is essential.
• Experience in fintech, lending, banking or other regulated environments.
• Familiarity with PostgreSQL, Docker, Kubernetes or Google Cloud Platform.
• Experience with Playwright, automated testing and production monitoring.
• Knowledge of authentication systems such as Keycloak and OpenID Connect.
• Experience using AI assisted development tools such as Claude Code or Cursor.
• Blockchain or early stage startup experience.

Responsibilities

• Build and maintain full stack applications using React, Next.js, Node.js and TypeScript.
• Develop responsive, accessible frontend interfaces and reusable React components.
• Build backend services, APIs and integrations supporting lending workflows and financial processes.
• Work with databases, data models and business logic to ensure reliable and secure applications.
• Write automated tests, participate in code reviews and maintain high engineering standards.
• Contribute to technical architecture, infrastructure and CI/CD workflows.
• Collaborate with product and commercial stakeholders to translate business requirements into effective technical solutions.
• Take ownership of features from design and development through to deployment and ongoing improvement.

Skills

React

Next.js

Node.js

TypeScript

Playwright

CI/CD

REST APIs

Software architecture

Education

Bachelor's in CS or related

Tools

PostgreSQL

Docker

Kubernetes

Google Cloud Platform

Job description

An early stage fintech is looking for an experienced Full Stack Engineer to help build and scale its lending platform.

The business is rebuilding UK property lending infrastructure, starting with bridging finance and expanding into specialist term loans. Its platform connects lenders, capital providers, brokers and borrowers, using technology to improve automation, transparency and efficiency across the lending lifecycle.

This is an opportunity to take ownership across the full stack, working with React, Next.js, Node.js and TypeScript to build a technically complex financial product from an early stage.

You will work closely with product and engineering teams, contributing to technical architecture, building new features and taking ownership from initial concept through to production.

Key Responsibilities

• Build and maintain full stack applications using React, Next.js, Node.js and TypeScript.
• Develop responsive, accessible frontend interfaces and reusable React components.
• Build backend services, APIs and integrations supporting lending workflows and financial processes.
• Work with databases, data models and business logic to ensure reliable and secure applications.
• Write automated tests, participate in code reviews and maintain high engineering standards.
• Contribute to technical architecture, infrastructure and CI/CD workflows.
• Collaborate with product and commercial stakeholders to translate business requirements into effective technical solutions.
• Take ownership of features from design and development through to deployment and ongoing improvement.

Requirements

• 4+ years of commercial software engineering experience across frontend and backend development.
• Strong experience with React, Next.js, Node.js and TypeScript.
• Experience building and maintaining production grade web applications and REST APIs.
• Understanding of relational databases, SQL, data modelling and application security.
• Experience with Git, code reviews, automated testing and CI/CD pipelines.
• Strong understanding of software architecture, performance and maintainable code.
• Comfortable working in an early stage startup where requirements evolve and engineers take ownership.
• Excellent communication skills and the ability to collaborate across technical and non technical teams.
• A degree in computer science, software engineering or a relevant subject is essential.
• Experience in fintech, lending, banking or other regulated environments.
• Familiarity with PostgreSQL, Docker, Kubernetes or Google Cloud Platform.
• Experience with Playwright, automated testing and production monitoring.
• Knowledge of authentication systems such as Keycloak and OpenID Connect.
• Experience using AI assisted development tools such as Claude Code or Cursor.
• Blockchain or early stage startup experience.

Frontend: React, Next.js, TypeScript

Testing: Playwright, unit and integration testing

CI/CD: GitHub Actions

What the Opportunity Offers

• Ownership across the full technology stack.
• The opportunity to influence architecture and engineering standards from an early stage.
• Close collaboration with founders, product and engineering teams.
• The chance to build a modern fintech platform tackling complex financial workflows.

About the Business

The business is rebuilding UK property lending infrastructure, starting with bridging finance and expanding into specialist term loans.

Its platform connects lenders, capital providers, brokers and borrowers, using automation, auditability and real time visibility to create a more transparent and efficient lending experience.