Senior Software Engineer
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Job Summary
Job description
Job Title: Senior Software Engineer
Band:5
Salary: 59877- 66869 (plus allowance up to 9000 per annum depending on technical assessment)
Location:Liverpool Norwich Newport Birmingham
Contract Type:Permanent
Hours:Full time/ Compressed
Closing Date:
Interview Date(s): 567th August 2026 (subject to change)
Watch our Webinar on the above link and gain valuable insight into GCA and our recruitment processes.
Call to action
Are you ready to use your Software Engineering skills to untangle complex data bottlenecks and build the high-performance apps that powers our nations most critical public services Are you ready to look beyond ordinary code and engineer resilient systems that helps our nations digital infrastructure and improve the daily lives of millions
Job Summary
In this role you will join a cross-functional squad of four engineers working within a high-trust ego-free engineering culture where we process over 2 Billion in annual procurement for critical public services. Operating with a continuous-deployment mindset our mission is to build robust intelligent platforms that optimize national spending and deliver tangible value to the nation. We favor strong opinions weakly held peer code reviews and an open environment where diverse perspectives and honest feedback are the foundation for delivering exceptional software.
Key Accountabilities:
Feature Delivery: Own the design build and deployment of scalable features for our core procurement platform.
System Reliability: Take accountability for the performance and security of systems processing high-volume public sector data.
AI Tooling Adoption: Lead the practical integration of Agentic AI coding practices into our teams daily development workflow
Write and Review Code: Ship clean secure and well-tested code while participating in constructive peer reviews.
Coach and Mentor: Guide fellow team members sharing technical knowledge and supporting their development through regular honest feedback and pair programming.
Collaborate Across Functions: Work closely with product managers and UX designers to translate complex public sector needs into technical solutions.
Improve Practices: Champion high engineering standards from refining our CI/CD pipelines to minimizing technical debt.
Essential Criteria (to be assessed at application stage):
Python Expert: Extensive experience in backend software engineering with Python.
Claude Code Experience: Practical experience adopting and integrating Agentic AI coding practices (such as Claude Code) and LLM workflows into daily development to improve workflow efficiency while managing token consumption and API costs.
UML Modeling Experience: Proven capability in translating high-level architecture into detailed low-level designs using UML modeling techniques such as sequence class or component diagrams to align engineering squads and mitigate technical risk.
SOLID Craftsmanship: Deep understanding of clean code and SOLID principles with a demonstrated ability to practically apply these standards during peer code reviews to spot design anti-patterns and improve system reliability.
Test-Driven Expert: Advanced expertise in Test-Driven Development (TDD) and structuring robust unit and integration tests to ensure that high-volume microservices can be safely and continuously deployed without risking production downtime.
Success Profiles (to be assessed at interview):
Behaviours:
Making effective decisions
Leadership
Delivering at pace
Technical:
Information security
Modern development standards
Systems design (Lead Success Profile - to be assessed via test during interview)
(A link to the Civil Service Success Profiles Framework is provided below)
Valuing our people:
Competitive salary
Generous pension scheme
A discretionary non-contractual performance related bonus
Working remotely in addition to working in advertised office location
Flexi time scheme (available for B1-B6)
Minimum 25 days annual leave to a maximum service related 30 days excluding bank holidays
Want to make a difference Find out more about the rewarding work that we do in our candidate pack.
The Civil Service is committed to attract retain and invest in talent wherever it is found. To learn more please see the Civil Service People Plan and the Civil Service D&I Strategy.
We want to make our recruitment process accessible to everyone so if there is any way that we can support you please contact
Working flexibly delivering outcomes
GCA operates a smarter working model that balances flexibility with collaboration. Successful candidates are expected to spend at least 26 days per quarter (approximately 2 days per week pro-rata) at their contracted office another GCA site or off-site for meetings. For the remainder of the time you may work from home or another suitable location that meets business needs.
Artificial Intelligence
Artificial Intelligence can be a useful tool to support your application however all examples and statements provided must be truthful factually accurate and taken directly from your own experience. Where plagiarism has been identified (presenting the ideas and experiences of others or generated by artificial intelligence as your own) applications may be withdrawn and internal candidates may be subject to disciplinary action. Please see our candidate guidance for more information on appropriate and inappropriate use.
Selection Process
A reserve list may be held for up to 12 months which the Civil Service may use to fill future suitably similar vacancies across government for candidates who are considered appointable following interview. Should you be placed on a reserve list and want to be removed please contact .
Please note that as part of this recruitment process if you are unsuccessful at the interview stage but are close to the benchmark score you may be considered for and offered a role at a lower pay band within the same job family.
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Complaints Procedure
Our recruitment processes are underpinned by the principle of selection for appointment on merit on the basis of fair and open competition as outlined in the Civil Service Commissions Recruitment Principles details of which can be found at you feel your application has not been treated in accordance with the Recruitment Principles and you wish to make a complaint you should contact in the first instance.
If you remain unsatisfied with the response you receive you can then contact the Civil Service Commission at
Internal candidates should apply using their Workday account. Please use the careers hub for your application.
Required Experience:
Senior IC
