Senior Software Developer - React, Node.Js, Python, CI/CD Scripts - Outside IR35

Boost Talent; Greater London; Hybrid; GBP 80,000 - 100,000; Full time

Job summary

A forward-thinking tech company in Greater London is seeking a Senior Software Developer for a 3-month contract. The role involves designing and implementing API security testing solutions while ensuring best practices across coding and documentation. The ideal candidate should excel in React, Node.js, and Python with a strong grasp of Infrastructure-as-Code and secure coding practices. This position is primarily remote with occasional on-site requirements, presenting a fantastic opportunity to contribute to critical security solutions.

Qualifications

• Deep expertise in one or more primary languages: React, Node.js, Python.
• Strong knowledge of Infrastructure-as-Code tools.
• Proven experience with secure coding practices.

Responsibilities

• Develop high-quality, production-ready code for API security testing solutions.
• Ensure code meets best practices for automated CI/CD deployment.
• Produce detailed architectural diagrams and design documents.

Skills

React

Node.js

Python

CI/CD Scripting

Infrastructure-as-Code

GitHub

AWS hosting

Tools

Terraform

CloudFormation

Job description

Senior Software Developer (Contract)

Duration: 3 months
Rate: Outside IR35
Location: 90% Remote (occasional on-site as required)

About the Role

We are seeking an experienced Senior Software Developer on a short-term contract. This role is ideal for a highly skilled professional who can deliver robust, secure, and scalable solutions with minimal supervision. You will play a key role in designing and implementing API security testing solutions and ensuring best practices across architecture, coding, and documentation.

Key Responsibilities

• Develop high-quality, production-ready code for API security testing solutions, including comprehensive unit and integration tests.
• Ensure code meets modern best practices and passes all quality checks for automated CI/CD deployment.
• Produce detailed architectural diagrams, ADRs, design documents, runbooks, and onboarding guides.
• Implement secure coding practices (OWASP, threat modelling) and ensure resilience and scalability in all solutions.
• Collaborate on infrastructure automation using Infrastructure-as-Code tools (Terraform, CloudFormation).
• Manage version control and workflows using GitHub.
• Contribute to UI development and AWS-hosted environments.

Required Skills & Experience

• Deep expertise in one or more primary languages: React, Node.js, Python, and CI/CD Scripting.
• Strong knowledge of Infrastructure-as-Code (Terraform, CloudFormation).
• Proven experience with secure coding practices and threat modelling.
• Ability to produce high-quality technical documentation for architecture and implementation guidance.
• Familiarity with AWS hosting and modern deployment pipelines.

What We're Looking For

• A proactive developer who can work independently and deliver results quickly.
• Excellent problem-solving skills and attention to detail.
• Strong communication skills for documentation and collaboration.

Interested?

Apply now and help us build secure, scalable, and resilient systems.