Job Description

Base 24 Engineer

12 Month initial contract

Remote with weekly visits to site in Paddington

​​​​​​​£Negotiable/Market Rate (Inside IR35)

My client is looking for a skilled Base 24 Engineer to join their dynamic team for an initial 12 month contract. This role is integral to maintaining and developing robust, secure, and scalable transaction processing systems. The ideal candidate will have a strong understanding of Base24 Architecture, transaction processing, and HP NonStop systems, with a proven ability to troubleshoot, optimize, and implement complex financial systems.

Key Responsibilities

HP NonStop Architecture & Tools

Configuration of requester/server applications using Pathway/Pathcom.

Managing hierarchical database file structures with Enscribe.

Utilizing TMF (Transaction Monitoring Facility) for rollback/record locking.

File utility management using FUP.

Event monitoring with EMS, and batch control with Batchcom.

Base24 System Expertise

Designing and implementing Base24 systems to process ATM and Switch transactions.

Configuring and auditing Base24 components such as NCPCOM, NETADRD, and AFT Screens (CPF, IDF, PBF).

Integration and updates of institution data using Extract/Refresh.

Developing and maintaining ICE

for web services.

Card Payments & Interfaces

Comprehensive understanding of ISO8583 messaging for Visa/Link transactions, STM, PSTM, and tokens.

Working knowledge of payment interfaces, including PSD2, ApplePay, and tokenization.

POS and ATM authorization systems, including device handler configuration for ATM files.

Programming & Debugging

Strong command over languages including TACL, TAL, Cobol, C, C++, and Java.

Expertise in SQL programming, XML, JSON, and DDL.

Debugging of compiled code in real-time using Inspect.

Security & Risk Management

Implementation and maintenance of security controls with Safeguard and XYGATE.

Management of encryption keys and tools like TSS and ACI desktop.

Testing, Simulation, and Implementation

Utilizing simulators such as Iliad, Paragon, and Visa VTS for transaction testing.

Writing and executing Implementation Plans for transitioning changes into production environments.

Maintaining source code repository controls with RMS and adhering to RPQ methodology for source code standards.

Required Skills and Qualifications

Proven expertise in Base24 Architecture and HP NonStop systems.

Deep understanding of transaction processing standards, including ISO8583.

Proficiency in programming languages: TACL, Cobol, C/C++, Java, and SQL.

Experience with financial system integration, Visa interfaces, and ATM/POS authorization.

Familiarity with security controls and compliance frameworks in the banking sector.

Strong problem-solving skills and ability to debug real-time compiled code.

Excellent documentation and communication skills for writing detailed implementation plans.

Preferred Skills

Experience with simulators like Paragon

Knowledge of ICE

Web services configuration.

Familiarity with institution-specific data configuration and refresh processes.

Disclaimer:

This vacancy is being advertised by either Advanced Resource Managers Limited, Advanced Resource Managers IT Limited or Advanced Resource Managers Engineering Limited ("ARM"). ARM is a specialist talent acquisition and management consultancy. We provide technical contingency recruitment and a portfolio of more complex resource solutions. Our specialist recruitment divisions cover the entire technical arena, including some of the most economically and strategically important industries in the UK and the world today. We will never send your CV without your permission. Where the role is marked as Outside IR35 in the advertisement this is subject to receipt of a final Status Determination Statement from the end Client and may be subject to change