Full Stack Engineer -

Infoplus Technologies UK Ltd; United States; Remote; USD 90,000 - 130,000; Full time

Benefits offered by this job

Health insurance

401(k) plan

Job summary

Infoplus Technologies UK Ltd is seeking a skilled full-stack engineer to develop and maintain scalable web and mobile applications.

Collaborate with cross-functional teams to deliver high-performance software, implement RESTful APIs, and ensure robust security and scalable architecture using Java, Spring, React, and modern tooling. A strong emphasis on code quality and performance will drive success in this role.

Qualifications

• Backend: strong Java and Python with Spring/Spring Boot.
• Frontend: HTML5, CSS3, JavaScript (ES6+).
• React: hands-on with React.js and related state tools.
• APIs: RESTful services and integration.
• Architecture: MVC, patterns and DI; security with JWT/OAuth2.
• Databases: SQL mastery across MySQL, PostgreSQL, Oracle.

Responsibilities

• Develop and maintain scalable frontend and backend applications.
• Collaborate with designers, product managers, and engineers to build software.
• Write clean, efficient code and adhere to best practices.
• Implement APIs and ensure seamless frontend-backend integration.
• Test, debug, and optimise for performance and scalability.
• Participate in code reviews and uphold quality standards.

Skills

Java

Python

Frontend fundamentals

React

React Hooks

Redux

MVC architecture

Design patterns

Dependency injection

RESTful APIs

Security concepts

SQL

MySQL

PostgreSQL

Oracle

Java testing

Mockito

JUnit

Jest

Cypress

Playwright

Education

Bachelor's degree in Computer Science or related field

Tools

Spring Framework

Spring Boot

HTML5

CSS3

JavaScript (ES6+)

React.js

React Hooks

Redux

Context API

NgRx

JWT/OAuth2

MySQL

PostgreSQL

Oracle

NoSQL (MongoDB)

AWS

Azure

GCP

Docker

Kubernetes

Kafka

RabbitMQ

JUnit

Mockito

Jest

React Testing Library

Cypress

Playwright

Job description

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.

Must Have

• 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.

Nice to Have

• 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