Junior software engineer Work, Jobs in Harwell, Oxf (with Salaries)

Junior Frontend Engineer (Ground Segment)
Open Cosmos —Didcot
- Hybrid work
- APIs
Junior Software Engineer
Pragma —Newbury
- Java
- SQL
- AWS
Junior Software Engineer
Gamma —Newbury
- Full-time
- Java
- SQL
- AWS
Quick apply
Junior Backend Engineer (50012)
InfoSum —Basingstoke
- Full-time
- Hybrid work
- Linux
- Python
- Annual leave
- Employee assistance programme
Quick apply
Senior Software QA Engineer - Rock Physics Applications
Halliburton —Abingdon
- Full-time
- Engineering
- Bachelor's degree
- Software development
14d
Senior Software Engineer - Rock Physics Applications
Halliburton —Abingdon
- Full-time
- Azure
- Computer Science
- Engineering
14d
Junior Application Support Engineer
DXC Technology —Reading
- Full-time
- Hybrid work
- Azure
- Windows
- Microsoft Office
- Life insurance
1d
Senior Flight Software Engineer
Open Cosmos —Didcot
- Hybrid work
- English
- C++
Senior Software Engineer
VoCoVo —Chipping Norton
- £70,000 - £78,000 a year
- Remote
- Azure
- SQL
- JavaScript
- Employee assistance programme
- Sick pay
Junior Embedded Engineer (RTOS)
Lumai —Oxford
- Full-time
- Hybrid work
- Engineering
- C++
- Bachelor's degree
Quick apply
3h
DevOps Engineer, Trident
AWS EMEA SARL (UK Branch) —Thames Valley
- Full-time
- Java
- AWS
- Computer networking
Lead Quality Engineer
Preservica —Abingdon
- Hybrid work
- Azure
- Engineering
- SharePoint
Senior Software Engineer
Wireless Logic mdex GmbH —Reading
- Hybrid work
- System design
- Machine learning
- APIs
- Employee assistance programme
- Employee discount
Java Engineer (50009)
InfoSum —Basingstoke
- Full-time
- Hybrid work
- Azure
- Java
- AWS
- Annual leave
- Employee assistance programme
Quick apply
Senior Backend Software Engineer (50008)
InfoSum —Basingstoke
- Full-time
- Hybrid work
- Azure
- Java
- AWS
- Annual leave
- Employee assistance programme
Quick apply
Senior Engineer - Software Integration Test
Fortescue —Kidlington
- Childcare
- Software development
- Employee assistance programme
Senior Research Software Engineer
Infleqtion —Kidlington
- Full-time
- Hybrid work
- Engineering
- SQL
- Bachelor's degree
Quick apply
Senior Java Engineer (50007)
InfoSum —Basingstoke
- Full-time
- Hybrid work
- Azure
- Java
- AWS
- Annual leave
- Employee assistance programme
Quick apply
Senior Blockchain Development
JPLoft —Basingstoke
- Computer Science
- Master's degree
- AWS

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Junior Frontend Engineer (Ground Segment)
Open Cosmos —Didcot
Clear, collaborative communication — able to partner effectively with designers, product owners, and backend engineers.
Junior Software Engineer
Pragma —Newbury
With enhanced maternity and paternity pay, we support you at every stage of life. Familiarity with ReactJS for front-end development.

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junior software engineer jobs near harwell, oxf

Junior Frontend Engineer (Ground Segment)

Open Cosmos -
Didcot

Apply Now

Job details

Qualifications

Go
React
Kubernetes
PostgreSQL
Terraform
Redux
APIs
TypeScript

Full job description

Aim high, go beyond!

At Open Cosmos we are solving the world’s biggest challenges fro space, providing businesses, governments and researchers access to more readily available information than ever before - ready for the challenge? Then read on…

Working in our Chief Technology Office (CTO)

The CTO division is where Open Cosmos technology comes to life. Covering engineering, product development, and technical innovation, the team designs, builds, and operates the satellites, systems, and platforms that make our missions possible. It’s a highly collaborative environment where ideas become real hardware, software, and data solutions that deliver impact from space.

Our Ground Segment team builds and runs the software that powers Open Cosmos missions. From our cloud-native Mission Operations Centre (MOC) to customer-facing tools, they design, deploy, and operate the systems that keep multi-satellite constellations flying.

Working with modern technologies — microservices, Kubernetes, Go, RabbitMQ, Postgres, and Terraform — they follow an agile, DevOps-driven approach. Every engineer owns their work end-to-end, from design and code to testing and operations, with plenty of space to suggest improvements and shape how they work.

What You'll Be Doing

As a Junior Front End Engineer, you’ll design, build, and optimise the mission operations user interface that powers Open Cosmos satellite missions. You’ll write and ship production-ready React code, implementing features that improve usability, performance, and scalability.

You’ll work closely with operators, designers, and product owners to turn requirements into clear, intuitive user interfaces. You’ll review code, champion React best practices. As our software grows, you’ll tackle performance challenges, improve reliability, and continuously enhance our tools, processes, and CI/CD workflows.

What You’ll Bring

We care more about what you can do than where you learned it — if you’re excited by the mission, we’d love to hear from you even if you don’t tick every box.

To thrive in this role, you’ll bring:

Programming skills in React and TypeScript, with a focus on building clean, maintainable, and scalable applications.
Exposure of working with state management solutions like Redux, Zust and, or Context API.
The ability to write and maintain unit and integration tests to keep components reliable.
A understanding of front-end performance optimisation techniques and when to apply them.
Working with CI/CD pipelines to support smooth and reliable deployments.
The ability of promoting React-specific best practices and improving front-end workflows.
Clear, collaborative communication — able to partner effectively with designers, product owners, and backend engineers.

For this role you can be based in any of our locations:

Harwell, UK
Barcelona, Spain
Porto, Portugal
Athens, Greece
Tenerife, Canaries

To apply, you must have the legal right to work in your chosen location.

Why Open Cosmos?

Work at the cutting edge of space technology with customers around the globe.
A mission-driven company making space accessible to help solve real-world challenges.
A diverse, ambitious, and supportive team.

Apply Now

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junior software engineer jobs in harwell, oxf

Junior Frontend Engineer (Ground Segment)