TL;DR

Senior Fullstack Java/React Engineer: Modernizing large-scale, complex software systems, reducing technical debt, and improving delivery speed and reliability with an accent on modern development practices and AI-assisted engineering techniques. Focus on designing and delivering Java/React applications within complex environments, improving development workflows, and supporting the decomposition of monolithic systems.

Location: Hybrid (London 1x a week)

Salary: £9,000–£12,000 per month (Outside IR35)

Company

%hirify_global% is seeking a contract Senior Full Stack Engineer to work as an engineering consultant within a Solutions Engineering team, focused on modernising client software systems.

What you will do

Design and deliver modern Java/React applications within complex environments.
Improve development workflows, testing approaches, and overall developer productivity.
Support the decomposition of monolithic systems into well-defined services.
Apply Domain-Driven Design principles to improve maintainability and system clarity.
Collaborate with platform and test engineers to deliver end-to-end solutions.
Act as a senior consultant, influencing engineering best practices and adoption of modern tooling.

Requirements

Strong experience with React and modern front-end development.
Strong experience with Java backend development (Spring, MongoDB).
Solid grounding in Domain-Driven Design (DDD) and experience with microservice-based architectures.
Full-stack awareness and the ability to collaborate across disciplines.
Confidence working directly with clients and guiding technical decisions.
Hybrid work: attendance required in London 1x a week.

Nice to have

Interest or experience in AI-assisted development to improve code quality and delivery speed.

Culture & Benefits

We are an equal opportunities employer and welcome applications from all suitably qualified persons regardless of their race, sex, disability, religion/belief, sexual orientation or age.