Senior Informix Developer – 24/7 Core Systems Expert

Company: Post Office Ltd
Apply for the Senior Informix Developer – 24/7 Core Systems Expert
Location: London
Job Description:

Post Office Ltd seeks a Core Systems Informix Developer to join the Core System Team in Greater London. This role involves maintaining a complex financial system that processes 36 million transactions annually, and requires deep technical expertise, problem-solving skills, and independent work within a small team.

The ideal candidate will collaborate with development teams and key stakeholders, ensuring project delivery within committed timescales, and effectively supporting mission-critical systems in a 24/7 environment.

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Posted: June 25th, 2026