Senior Full-Stack Engineer (C++/Python) – Hybrid, DV Cleared

Addition Solutions LTD; Bath; Hybrid; GBP 72,000 - 88,000; Full time

Benefits offered by this job

Annual bonus

Private healthcare

Birthday off

Development budget

Accommodation provided

Hybrid work

AI / data projects

Laptop choice

Team socials

Autonomy in projects

Job summary

Addition Solutions LTD in Corsham is seeking a Senior Full-Stack Developer (C++/Python) to design and deliver scalable software across government and defence projects. You will build backend APIs, data pipelines and modern front-end interfaces, deploying in cloud environments and mentoring teammates.

A hybrid role with on-site presence in Corsham is essential. You will work across technologies like C++, Python, TypeScript/JS/React, Docker, Linux and SQL, with opportunities to influence

Qualifications

• Strong commercial experience with either C++ or Python.
• Full-stack development with TypeScript, JavaScript and React.
• Backend APIs using FastAPI, Node.js, Express.js or Next.js.
• Proficient in HTML, CSS, and modern UI/UX concepts.
• Hands-on Docker, Linux and SQL databases.
• Cloud deployment in Azure or Google Cloud Platform.
• Experience with Git, GitHub and CI/CD in teams.
• Sound software engineering principles, data structures and algorithms.
• Good communication and ability to mentor others.
• Active UKSV DV clearance is required.

Responsibilities

• Designing, developing and maintaining scalable full-stack applications across challenging projects.
• Building backend services, APIs and data pipelines with C++ or Python.
• Developing intuitive front-end applications with strong UX focus.
• Working with cloud, databases and containerized environments.
• Collaborating with engineers and stakeholders to implement solutions.
• Reviewing code and improving engineering standards; supporting automated testing and deployment.
• Mentoring junior developers and sharing knowledge across teams.
• Troubleshooting complex technical challenges and improving systems.
• Contributing to technical architecture and project planning.

Skills

C++

Python

TypeScript

JavaScript

React

Docker

Linux

SQL

Git

CI/CD

UI/UX

Tools

FastAPI

Node.js

Express.js

Next.js

Azure DevOps

GitHub

Job description

Addition Solutions LTD in Corsham is seeking a Senior Full-Stack Developer (C++/Python) to design and deliver scalable software across government and defence projects. You will build backend APIs, data pipelines and modern front-end interfaces, deploying in cloud environments and mentoring teammates.

A hybrid role with on-site presence in Corsham is essential. You will work across technologies like C++, Python, TypeScript/JS/React, Docker, Linux and SQL, with opportunities to influence