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Date Added: Fri 27/02/2026

Senior Systems Developer

Nationwide, BB7, UK
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Company: GAINHAM RECRUITMENT

Job Type: Permanent, Contract, Full Time

Salary: £60000 - £80000/annum

Senior Systems Developer
A dynamic global Fintech company is seeking a Senior Systems Developer to join their team. This is a fully remote role, full time hours and the position is open to both contractors for short term contract work and PAYE candidates. The firm is based both in and out of the UK.
Hours: Monday - Friday 9am - 5.00pm
Salary Range: £60,000 - £80,000 per annum
Responsibilities to include:
• Design and implement large-scale, high throughput event-driven systems for financial transaction processing and telecommunications infrastructure
Requirements:
• Advanced proficiency in C programming, deep understanding of POSIX standards and system calls, expert level Linux / Unix
• Extensive experience with TCP / IP socket programming
• Experience with ISO 8583 message processing and codec implementation
• Advanced Makefile development skills
• Advanced proficiency in data structure implementation
• Understanding of unit testing framework development
If you have the above skills and are able to demonstrate deep technical knowledge through code samples, project descriptions and technical discussions please email your up to date CV to Sian at Gainham Recruitment
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