skip navigation
skip mega-menu

Senior Software Developer - Companies House - HEO

Government Digital & Data -

Full-time (Permanent)
The basic salary is £40,398 with an additional, non-pensionable digital allowance of up to £11,000.
Published on
15 May 2025
Deadline
26 May 2025

Job summary

  • 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!

Watch this video to find out more about working in Digital at Companies House

The majority of our teams are primarily based in our Cardiff head office. The teams are a mix of hybrid and fully remote workers. We are offering this role on a hybrid/remote basis, aligned to the Cardiff office.   

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%.   

Find out more about what a great place Companies House is to work

Job description

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

Person specification

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

Experience 

  • You'll have extensive software engineering experience, with excellent technical skills and the ability to complete detailed design. A degree in computing or similar would be an advantage
  • You are patient and have proven experience to help support and mentor others with different degrees of expertise to maximise their potential – including through techniques such as pair programming
  • You'll have a passion for high quality, well-crafted code, and associated tooling
  • You embrace continuous integration and have a continuous delivery mindset
  • You have excellent communication skills and can help explain complicated technical issues to individuals who don’t share the same technical experience
  • Recent experience as a Java or JavaScript/Node developer in an agile software engineering environment
  • Experience of developing software throughout the delivery lifecycle
  • You ideally have experience designing and building RESTful APIs and supporting them in a live production environment

Technical experience 

  • Have a STEM degree with a programming element or equivalent commercial software development experience (we'll ask for evidence of this)
  • Strong knowledge of programming tools, frameworks, and techniques in at least one of the following ecosystems: Java and/or Node (you will be expected to learn the other once in post as required according to business needs)
  • Application of good working practices such as test-driven and behaviour-driven development (TDD/BDD), pair programming, version control/branching strategies, and application of design patterns
  • Knowledge of all key full stack web technologies, including use of relational and noSQL databases
  • Knowledge of any of the following technologies/approaches are beneficial: Golang, TypeScript, Kafka, Deployment pipeline tooling (e.g. Concourse), Infrastructure as Code, Elasticsearch, MongoDB, cloud-first micro-service driven architecture
  • Knowledge of WCAG 2.1 accessibility guidelines is desirable

What it is like to work in Companies House

Inclusive and diverse teams are important to us. Wherever possible we offer flexible working arrangements. We'll support you to meet other commitments and help you strike a better work-life balance. We’re keen to create an environment that works for everyone, and we particularly encourage applications from different underrepresented demographics.

Half a day a week is devoted to Innovation time where everyone in digital can work on whatever they choose, be that building new applications, trying new technologies or working towards certifications, it’s up to you. In addition to this we offer lots of opportunities to have training as and when it is needed. We trust and empower our staff to work in a way which best suits them.

Companies House is an award-winning employer, with an Investors in People Platinum Award we are at the forefront in ensuring our staff reach their full potential in building brilliant services on cutting-edge technology. You’ll be joining our Software Engineering Profession at a time of transformation and you will be a part of shaping the future of our department. We use Agile Methodologies and promote a culture of continuous improvement.

Qualifications

Have a STEM degree with a programming element or equivalent commercial software development experience (evidence is required)

Behaviours

We'll assess you against these behaviours during the selection process:

  • Changing and Improving
  • Making Effective Decisions
  • Developing Self and Others

Technical skills

We'll assess you against these technical skills during the selection process:

  • Systems Integration
  • Development Process Optimisation
  • User Focus
  • Programming and Build
  • System Design


More jobs at Government Digital & Data

Lead Business Analyst-Department for Transport
£51,997
Full-time (Permanent)
Technical Architect Vehicle Certification Agency-SEO
£57,400
Full-time (Permanent)
Software Engineer - ONS - HEO
£32,452
Full-time (Permanent)
IT Support Engineer - Met Office - EO
£26,954 - £29,531
Full-time (Permanent)
DDaT Senior BI Design & Integration Manager - MoD - SEO
£43,080
Full-time (Permanent)
Lead Applied AI Engineer (i.AI) - CO - G6
£67,126 - £103,924
Full-time (Permanent)
DDAT Lead Technical Architect - MoD - G7
£57,670 - This post is eligible for a Digital Skills Allowance of up to £15,300 per annum
Full-time (Permanent)
Interaction Design Industrial Placement 2025 - Met Office - AO
£25,606
Full-time (Permanent)
Lead DevOps Engineer - DWP - G6
£72,664 - £89,995
Full-time (Permanent)
Software Development Engineer In Test (Automation Test Engineer
Full-time (Permanent)
Software Developer in Test - HM Courts and Tribunals Service - SEO
£41,463 - £52,040 location dependant. Offers above will be an additional GDD allowance based on experience.
Full-time (Permanent)
Software Developer in Test - HM Courts and Tribunals Service - SEO
£41,463 - £52,040 location dependant. Offers above will be an additional GDD allowance based on experience.
Full-time (Permanent)
Software Developer - HM Courts and Tribunals Service - SEO
The national salary range is £41,463 - £45,276, London salary range is £47,657 - £52,040.
Full-time (Permanent)
Interaction Designer - Planning Inspectorate - SEO
£45,219 - £49,462
Full-time (Permanent)
Security Architect - NS&I - G7
National minimum £57,500 London minimum £66,000
Full-time (Permanent)
Defence Business Services (DBS) CSM-CDSDefHrs Application Lead - MoD - G7
The base salary for this grade is £59,690. Offers above this will be made up of DSA , Digital Skill allowance of up to £15,300
Full-time (Permanent)
Data Engagement Lead - GDS - G7
The base salary of this grade is £61,005 for London and £55,403 for other locations.
Full-time (Permanent)
Principal Data Architect IBCA Data Platform - CO - G6
£67,126 - £71,795
Full-time (Permanent)
Senior Enterprise Architect (Data) - HMRC - G7
National Minimum £56,344 Maximum £62,590 - London Minimum £63,397 Maximum £70,422
Full-time (Permanent)
Senior Software Developer - HM Land Registry - SEO
£46,058 - £50,715 Government Digital and Data Pay Framework Eligible
Full-time (Permanent)
Principal Software Developer - Companies House - SEO
Base salary is £51,854 - £55,717 with an additional DDaT allowance of £4,350 - £10,000 available
Full-time (Permanent)
Software Developer - HM Land Registry - HEO
£41,100 - £44,400 HMLR Digital and Data Pay Supplement
Full-time (Permanent)
Senior Java Developer (National) - Insolvency Service - SEO
National: £44,812 - £50,213 (London- only open to Internal Candidates) £46,926 - £52,583 This post attracts an R&R supplement of £5,150.
Full-time (Permanent)
Junior DevOps Engineer - IPO - EO
£31,783 - £33,055
Full-time (Permanent)
Senior DevOps Engineer (WebOps & Cloud Application Support) - Companies House - HEO
Base salary is £40,398 with an additional DDaT allowance of £4,350 - £11,000 available.
Full-time (Permanent)
Lead WebOps Engineer (WebOps/DevOps) - Companies House - SEO
Base salary is £41,571 with an additional DDaT allowance of £4,350 - £11,000 available.
Full-time (Permanent)
Lead Data Architect - Planning Inspectorate - G7
£59,644 - £66,120
Full-time (Permanent)
Army Business Innovation Architect (Digital) - MoD - SEO
£44,590
Full-time (Permanent)
Test Engineer - DVLA - HEO
£34,233
Full-time (Permanent)
Interaction Designer - DWP - SEO
£42,614 - £45,081
Full-time (Permanent)
Senior Interaction Designer - DBT - SEO
London: £44,942 to £49,459 / National: £41,156 - £45,754 (including allowance)
Full-time (Permanent)
UX Interaction Designer - Ofgem - G7
National £47,895 - 58,519 London £50,748 - 62,699
Full-time (Permanent)
Senior Software Developer - HM Land Registry - SEO
£46,058 - £50,715 Government Digital and Data Pay Framework Eligible
Full-time (Permanent)
Digital, Information & Technology (DIT) Senior Software Developer - MoD - SEO
The base salary for this grade is £44,590, Offers above this will be made up of DSA , Digital Skill allowance of up to £11,400
Full-time (Permanent)
Defence Business Services (DBS) - Technical Architect - MoD - SEO
The base salary for this grade is £44,590, Offers above this will be made up of DSA , Digital Skill allowance of up to £11,400
Full-time (Permanent)
DevOps Engineer - DWP - SEO
£42,614 - £58,347
Full-time (Permanent)
DevOps Engineer AI Operations - Met Office - HEO
£33,794
Full-time (Permanent)
DevOps Site Reliability Engineering (SRE) - HO - SEO
National: £44,720 - £47,850 London: £48,720 - £52,130 includes allowances
Full-time (Permanent)
Senior Service Transition Manager - Crown Commercial Service - G7
£57,954 - £65,400
Full-time (Permanent)
Service Designer - Welsh Government - HEO
£35,787 - £43,759
Full-time (Permanent)
Defence Digital IT Service Transition Lead - MoD - SEO
£44,590
Full-time (Permanent)

Subscribe to our newsletter

Sign up here