Senior Software Engineer

Date Posted: 2026-06-24

Country: United Kingdom

Location: Gloucester, South Gloucestershire

Position Role Type: Onsite

At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world.

Raytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.

Raytheon UK have a full time, permanent opportunity for a Senior Software Engineer to join our team on our Manchester or Gloucester sites.

You'll be part of our experienced software dev function, working in a cross-functional team, delivering and deploying critical software across a variety of business areas.

Due to the interesting work we do and the sector this team is working in, we require all candidates to be willing to attain an eDV clearance.

In this area of the business we prove DevSecOps at scale, Artificial Intelligence, Machine Learning, cyber and geospatial intelligence capabilities to support the defence, intelligence and cyber sectors. Collaborating with customers and suppliers to deliver secure, mission critical systems using the latest technologies and innovations.

Responsibilities

Design and build software using industry best practice
Collaborate with stakeholders and other engineers
Contribute to the completion of milestones associated with your project
Contribute to continuous improvement within your team
Collaborate with your peers on technical direction within your team

Desired Skills and Experience

Core Software Engineering

JavaScript frameworks (React, NextJS)
TypeScript
Python
Java
REST API development
OpenAPI / Swagger

Cloud & Infrastructure

Cloud services (AWS or Azure)
Containerisation & Orchestration (Docker, Kubernetes, OpenShift)
Infrastructure as Code (Terraform, Ansible)

Data & Search Technologies

Relational Databases (e.g. PostgreSQL)
Elasticsearch / Opensearch

Testing & Quality

Unit testing and automation
Testing frameworks (e.g. Mocha, Jest, Cypress)

Delivery & Collaboration

Experience working in an Agile delivery team
Use of code repositories (e.g. GitLab); familiarity with branching strategies, pull requests and merge processes

Please ensure the role type defined below is appropriate for your needs before applying to this role. This position is classified as:

Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products.]

Hybrid: Employees who are working in Hybrid roles will work regularly both onsite and offsite. Ratio of time working onsite will be determined in partnership with your leader.

Remote: Employees who are working in Remote roles will work primarily offsite (from home). If you live within a reasonable commute of an RTX site with other colleagues you interact with, your manager will discuss whether there is a degree of onsite presence associated with this role.

Candidates will learn more about role type and current site status throughout the recruiting process. For onsite and hybrid roles, commuting to and from the assigned site is the employee’s personal responsibility.

Requires advanced knowledge of work area typically obtained through advanced education combined with experience. May have practical knowledge of project
management. Practical to substantial knowledge of RTX projects, programs or systems with the ability to make enhancements and leverage in daily work.

Typically requires: A University Degree or equivalent experience and minimum 5 years prior relevant experience, or An Advanced Degree in a related field and minimum 3 years experience

Engineering/Other Technical Positions: Typically requires a degree in Science,Technology, Engineering or Mathematics (STEM) and a minimum of 5 years of prior relevant experience unless prohibited by local laws/regulations.

RTX adheres to the principles of equal employment. All qualified applications will be given careful consideration without regard to ethnicity, color, religion, gender, sexual orientation or identity, national origin, age, disability, protected veteran status or any other characteristic protected by law.

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