Job Vacancy Senior Software Developer

United Kingdom

Companies House

Software Development LifeCycle (SDLC)

Job position Senior Software Developer

Permanent

As soon as possible

£40k-51k

< 2 years experience

Remote

United Kingdom

Published on 30/07/2025

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Please note:

Companies House cannot offer Visa sponsorship to candidates through this campaign.
Security Clearance is an essential requirement for this campaign. You'll need to have been in the UK for at least 3 out of the last 5 years to be eligible to apply for SC.
The majority of our teams are primarily based in our Cardiff head office. The teams are a mix of hybrid and fully remote workers. Remote contracts will only be offered to successful candidates who are not within a commutable distance to our Cardiff, Belfast or Edinburgh offices. If you are located in a reasonable distance to one our offices, you will receive a hybrid contract aligned to one of our offices.
The basic salary is £40,398 with an additional, non-pensionable digital allowance of up to £11,000. The final salary and allowance awarded will be based on an assessment of your skills and experience as demonstrated at interview. The pay advertised is the maximum that can be offered.
A with an employer contribution of 28.97%

As a Senior Developer you'll join one of our many Agile Software Development teams. A typical team is made up of an agile delivery manager, developers, testers, user researchers, analysts and a product owner.

You’ll be responsible for:

Designing efficient and maintainable solutions
Contributing and adhering to our technical standards
Mentoring software engineers in your team and the wider software development community
Maximising the automated test coverage to help move to continuous delivery
Ensuring code quality through code reviews

Candidate profile

We are looking for the following experience and skills which will be assessed at sift and interview.

Working knowledge of programming tools, frameworks, and techniques in at least one of the following ecosystems: Java/Spring or Typescript/Node.js (you will be expected to learn to become proficient in both once in post as required according to business needs).
Experience of developing software throughout the delivery lifecycle.
Knowledge of RESTful APIs. 
A passion for high quality, well-crafted code, and associated tooling.
A degree in computing or similar would be an advantage, or equivalent industry experience.
You embrace continuous integration and have a continuous delivery mindset.
You are patient and can help support and mentor others with different degrees of expertise to maximise their potential.
You have excellent communication skills and can help explain complicated technical issues to individuals who don’t share the same technical experience. 
Knowledge of any of the following technologies / tools: Concourse CI, Kafka, MongoDB, Oracle SQL, Docker, Terraform.
Knowledge of microservice driven architecture.
Knowledge of developing in the Cloud.

Working environment

Do you have a passion for delivering user focused digital services and using the latest technology to deliver solutions to a global audience of millions?

Are you enthusiastic about clean code, well designed software and mentoring others to enable them to work at their best?

If the answer to the above is yes, we would love you to join us and be part of our team to help us build the future of our Digital Services!

We are looking for Software Developers with Java/Spring and/or Typescript/Node.js experience. 

Our current technology stack is: Java, Spring, Typescript, Node.js, Kafka, MongoDB, Oracle, AWS, Docker. 

Companies House offers a flexible and welcoming culture that promotes a healthy work life balance as well as a proactive approach to wellbeing that allows us to be our best at work.  We recognise that people are the key to our success so offer a fantastic benefits package including flexible working with no core hours, 30 days annual leave, 8 bank holidays and 1 privilege day as well as enrolment into the Civil Service Pension scheme with a contribution rate averaging 28%.  

Discover Companies House

Cardiff, Wales, United Kingdom

> 1000 employees

IT services

At Companies House we drive confidence in the economy and make the UK a great place to start and run a business. We do this by registering company information and making it publicly and freely available. The data we hold informs business and consumer decisions, supports growth and helps disrupt economic crime. But we're more than just a government agency - we're a thriving community of professionals dedicated to driving innovation, fostering diversity, and making a meaningful impact - to the UK economy, and the lives of the people who live and work here. Our digital teams design innovative and accessible services, trusted by millions of businesses. What’s more, we value work-life balance, understanding the importance of having a career that is both fulfilling and flexible. We’re also committed to personal growth, offering two days each month for innovation time, as well as training resources and development opportunities. Whether you're an experienced professional or just starting your career journey, our dynamic and inclusive workplace could be the place for you.

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Senior Software Developer

Companies House