AI/Fullstack Engineer - Python, React, Claude/CoPilot

Harvey Nash Group; Belfast City District; On-site; GBP 74,000 - 120,000; Full time

Benefits offered by this job

Hybrid work

Job summary

Harvey Nash Group is seeking Product Engineer (AI-Augmented & Full-Stack) in Belfast, UK. The role focuses on building modern financial technology products with AI-assisted workflows, combining frontend and backend engineering with cloud-native infrastructure.

You will work across multiple levels from engineers to senior leaders, designing, building and delivering production-ready software with high standards for security and architecture. Hybrid work is offered.

Qualifications

• 2-8+ years of professional software engineering experience.
• Hands-on across the full software development lifecycle.
• Ability to translate business problems into engineering solutions.

Responsibilities

• Design, build and ship full-stack applications from concept to production.
• Develop frontend interfaces using React, TypeScript and JavaScript.
• Build scalable backend services and APIs using Python with FastAPI/Flask/Django.
• Leverage AI-assisted tools to accelerate prototyping and delivery.
• Design robust architectures, data models and API contracts.
• Work with cloud-native infra, including AWS, PostgreSQL and Terraform.
• Own automated testing, CI/CD, code reviews and deployments.
• Evaluate AI-generated code for security and performance issues.
• Collaborate with PMs, designers and stakeholders on solutions.
• Contribute to engineering standards and reusable components across teams.

Skills

Full-stack development

Problem solving

Collaborative mindset

Security & quality focus

Tools

React.js

TypeScript

JavaScript

Python

AWS

PostgreSQL

Job description

Product Engineer (AI-Augmented & Full-Stack Systems)

Location: Belfast, Northern Ireland - Titanic Quarter
Rate: £400-£650 per day, Inside IR35
Working Model: Hybrid - 3 days per week in the office
Contract Type: Contract
Openings: Multiple headcounts
Experience: 2-8+ years, depending on level

The Opportunity

We are seeking talented Product Engineers to join a leading global investment bank's technology organisation in Belfast.

This is an exciting opportunity to work within autonomous engineering teams, building and delivering modern financial technology products from initial concept through to production.

The focus is on combining strong full-stack engineering fundamentals with modern AI-assisted development workflows. You'll be hands-on throughout the development lifecycle, using tools such as Claude Code and GitHub Copilot to accelerate delivery while maintaining high standards of code quality, security and architecture.

We are recruiting across multiple levels, from experienced engineers to senior technical leaders who can help shape engineering standards and influence product direction.

Key Responsibilities

• Design, build and ship full-stack applications from concept through to production.

• Develop modern, responsive user interfaces using React, TypeScript and JavaScript.

• Build scalable backend services, APIs and microservices using Python and frameworks such as FastAPI, Flask or Django.

• Leverage AI-assisted development tools to accelerate prototyping, coding, testing and delivery.

• Design robust system architectures, API contracts and data models.

• Work with cloud-native technologies and infrastructure, including AWS, PostgreSQL and Terraform.

• Take ownership of automated testing, CI/CD pipelines, code reviews and production deployments.

• Critically evaluate AI-generated code, identifying security vulnerabilities, architectural issues and potential performance bottlenecks.

• Collaborate closely with Product Managers, designers and technical stakeholders to translate business problems into effective engineering solutions.

• Contribute to technical standards, reusable components and best practices across engineering teams.

Essential Technical Skills

Frontend Development

• React.js, TypeScript and JavaScript.

• Functional components, hooks and state management.

• Responsive UI development and modern component libraries.

Backend Development

• Python, ideally using FastAPI, Flask or Django.

• RESTful APIs, authentication and asynchronous processing.

• Microservices and scalable backend architecture.

Cloud & Infrastructure

• AWS, including services such as Lambda, S3, CloudFront and API Gateway.

• PostgreSQL, relational database design and query optimisation.

• Terraform and Infrastructure as Code.

• Git, CI/CD and automated deployment pipelines.

AI-Augmented Engineering

• Practical experience using AI-assisted development tools such as Claude Code, GitHub Copilot or Devin AI.

• Ability to direct, review, test and validate AI-generated code.

• Understanding of the limitations, security risks and architectural considerations associated with AI-assisted development.

Experience & Candidate Profile

We are interested in engineers with approximately 2-8+ years of professional software engineering experience, with responsibilities and seniority aligned to their technical capability.

Successful candidates will demonstrate:

• Strong hands-on engineering and problem-solving skills.

• The ability to take ownership of features and deliver measurable outcomes.

• Product thinking and an understanding of user needs.

• Confidence working across the full software development lifecycle.

• Strong technical judgement, attention to detail and a commitment to maintainable code.

• A collaborative mindset and the ability to communicate technical decisions effectively.

Why Apply?

• Competitive contract rates of £400-£650 per day, Inside IR35.

• Multiple opportunities across different engineering levels.

• Work on high-impact technology within a global financial services environment.

• Exposure to modern AI-assisted engineering workflows and cloud-native technologies.

• Join collaborative, autonomous engineering teams with a strong focus on product outcomes.

• Hybrid working, with three days per week in Belfast