Software Engineer III - Flexible Hours, Scalable Web Apps

RX Global; Greater London; On-site; GBP 70,000 - 100,000; Full time

Job summary

RX Global seeks a Software Engineer III to deliver production-quality software within well-defined components, guided by senior engineers. You will contribute to secure, maintainable systems and help improve engineering quality, operations, and collaboration.

You will work with React, .NET, and PostgreSQL, in an Agile team, applying SOLID principles and modern web technologies, including AWS, CI/CD, and observability tools. RX Global values secure, scalable software and team growth.

Qualifications

• Proficient in C# (.NET), JavaScript/TypeScript (React) and SQL (PostgreSQL).
• Experience in Agile cross-functional product development teams.
• Ability to translate ambiguous requirements into scalable solutions.
• Knowledge of SOLID, design patterns, API design, DDD and event-driven architectures.
• Experience building modern web apps with React, Vite, REST and GraphQL.
• Experience on AWS with testing, DevSecOps, CI/CD (GitHub Actions).
• Familiar with observability tools like Splunk and Mixpanel and AI-assisted development tooling.

Responsibilities

• Produce clear technical documentation using RX architectural principles.
• Build software with performance, resilience, extensibility, and security foundations.
• Apply testing strategies aligning with deployment and operational guidelines.
• Contribute to incremental code quality and workflow improvements.
• Write clean, maintainable code and participate in peer reviews.
• Support operational health including monitoring, diagnostics, and incident response.
• Maintain runbooks and knowledge for owned components; help reduce technical debt.
• Share knowledge and mentor junior engineers where appropriate.

Skills

C# (.NET)

JavaScript/TypeScript (React)

SQL (PostgreSQL)

Agile

Requirements analysis

SOLID

Design patterns

API design

DDD

Event-driven architectures

React

Vite

REST

GraphQL

AWS

GitHub Actions

DevSecOps

Observability tools (Splunk, Mixpanel)

AI-assisted development (GitHub Copil)

Tools

React

Vite

REST

GraphQL

GitHub Actions

AWS

Splunk

Mixpanel

GitHub Copilot

Amazon Bedrock

Job description

RX Global seeks a Software Engineer III to deliver production-quality software within well-defined components, guided by senior engineers. You will contribute to secure, maintainable systems and help improve engineering quality, operations, and collaboration.

You will work with React, .NET, and PostgreSQL, in an Agile team, applying SOLID principles and modern web technologies, including AWS, CI/CD, and observability tools. RX Global values secure, scalable software and team growth.