Full Stack Engineer

Project overview

Full Stack Engineer

3 Month contract initially + Extensions

Based: Hybrid - Max 3 days p/w onsite in London

Nice to have

This is an excellent opportunity on a great project of work, If you are looking for your next exciting opportunity, apply now for your CV to reach me directly, we will respond as soon as possible.

LA International is an award-winning partner of choice for many of the world's most influential companies and government organisations. Holding Enhanced Government Security Accreditation, we are recognised as the European market leader in the delivery of Security Cleared talent to organisations that demand the very highest levels of security, compliance and assurance.

A multiple award-winning organisation, having secured the prestigious Queens Award for Enterprise: International Trade over consecutive years. We are committed to fostering an inclusive, equitable and accessible workplace where everyone feels valued and supported. We welcome applications from all individuals, regardless of background or identity, and we encourage candidates who may not meet every listed requirement to still apply. If you require any adjustments or support during the recruitment process, please let us know and we will work with you to ensure a fair and accessible experience.

Please Note: If a high volume of applications is received, only candidates shortlisted will be contacted.

• Knowledge of NoSQL databases (MongoDB, DynamoDB)
• Exposure to Generative AI and LLM integration (OpenAI, Claude, Bedrock) in enterprise applications, including building RAG solutions with embeddings and vector databases.
• Familiarity with Spring AI or LangChain/LangChain4j, prompt engineering best practices, and streaming LLM responses to React UIs.
• Microservices architecture and messaging systems (Kafka, RabbitMQ)
• Cloud platforms (AWS, Azure, or GCP) and containerization (Docker, Kubernetes)
• Testing: JUnit and Mockito on the Back End; Jest, React Testing Library, and Cypress or Playwright on the Front End

Project details

£400 - £450 p/d - (via Umbrella company)

We have a great opportunity with a world leading organisation where you will be provided with all of the support and development to succeed. A progressive organisation where you can really make a difference. We have a great opportunity for a Full Stack Engineer to join the team.

Key Responsibilities

Developing and maintaining scalable Front End and Back End applications for web and mobile platforms.

Collaborating with designers, product managers, and other engineers to build user-friendly, high-performance software.

Writing clean, efficient, and maintainable code while adhering to best practices in software development.

Implementing APIs and ensuring seamless integration between Front End and Back End systems.

Testing, troubleshooting, debugging, and optimising existing/new systems for performance and scalability.

Participating in code reviews, providing constructive feedback, and maintaining quality standards.

Key Skills/knowledge/experience:

• Backend: Strong Java/Python skills with Spring and Spring Boot
• Frontend fundamentals: Strong HTML5, CSS3, and JavaScript (ES6+)
• Modern Front End framework: Hands-on experience with React Js
• Component architecture and state: Component-based design and state management (React Hooks, Redux, Context, or NgRx)
• Responsive UI: Building responsive, cross-browser compatible applications
• APIs: Developing RESTful APIs
• Architecture and design: MVC architecture, design patterns, and dependency injection
• Security: Authentication and authorization (JWT, OAuth2)
• Databases: Hands-on SQL with MySQL, PostgreSQL, or Oracle. This includes complex queries, joins, indexing, and query optimization.
• Start: ASAP
• Duration: 3 months
• Location: London, UK, GB
• Rate: 50-56 EUR/h