AI-First Full Stack Engineer – Fintech & Cloud

Hackajob Ltd; Greater London; Hybrid; GBP 61,000 - 101,000; Full time

Benefits offered by this job

28 days annual leave

Private health insurance

Equity after probation

Enhanced pension

Dental and optical cover

Online GP service

Life assurance

Hybrid work including abroad

Job summary

Monument in London seeks a capable Full Stack Engineer to own mobile and web platforms, building scalable, secure apps with a strong AI-first approach. You will work across front-end and back-end, partner with Product and Data teams, and contribute to a regulated financial services environment.

You will design, implement and monitor solutions with modern tooling, leveraging React, Node.js, TypeScript, GraphQL and AWS, while focusing on performance and compliance.

Qualifications

• Proven full-stack experience delivering production-ready apps using React, Node.js and AWS.
• Hands-on mobile development experience (iOS/Android) or React Native for mobile-first work.
• Strong knowledge of RESTful and GraphQL APIs, serverless architectures and CI/CD pipelines.
• Comfort with TypeScript and modern JS tooling, cloud-native ecosystems.
• Track record of using data/experimentation to guide technical and product decisions.
• Experience with AI-powered engineering tools and applying AI first approaches.

Responsibilities

• Build, deploy and scale mobile apps across front-end and back-end with ownership from architecture to production monitoring.
• Collaborate with Product, Design and Data to define problems and ship solutions quickly.
• Apply AI-first engineering using tools like GitHub Copilot and AI agents to speed development while ensuring quality.
• Instrument systems to track performance and user behavior for data-driven decisions.
• Contribute to product strategy by identifying opportunities for tech innovation and automation.
• Ensure reliability, scalability and compliance in a regulated financial services environment.
• Help define engineering standards and practical patterns for the team as it grows.
• Champion simple, intuitive designs and robust interfaces for clients.

Skills

Full-stack engineering

TypeScript

JavaScript

AI tools

Agile teams

Tools

AWS

React

Node.js

GraphQL

PostgreSQL

DynamoDB

CI/CD

Job description

Monument in London seeks a capable Full Stack Engineer to own mobile and web platforms, building scalable, secure apps with a strong AI-first approach. You will work across front-end and back-end, partner with Product and Data teams, and contribute to a regulated financial services environment.

You will design, implement and monitor solutions with modern tooling, leveraging React, Node.js, TypeScript, GraphQL and AWS, while focusing on performance and compliance.