Senior BASE24 Application Support Engineer - Cards and Payments

DiceTek UAE; Abu Dhabi; On-site; AED 360,000 - 600,000; Full time

Job summary

Dicetek LLC is seeking a Senior BASE24 Application Support Engineer to support mission-critical Cards and Payments platforms in Abu Dhabi, UAE. The role covers production support, SRE practices, and integration with major card schemes, requiring deep BASE24 expertise and strong SQL skills.

The role emphasizes high-volume transaction processing, incident resolution and collaboration with multiple teams to ensure payment system resilience and uptime.

Qualifications

• 8-10 years of experience in banking and payments technology.
• Minimum 8 years in production support, application support, SRE or infrastructure support for card payment environments.
• Minimum 5 years supporting BASE24 Classic or BASE24-eps platforms.
• Strong SQL experience across MS SQL Server, Oracle and PostgreSQL.
• Knowledge of ISO8583 messaging, card schemes and 24x7 production operations.
• Experience with Visa, Mastercard, UAE Switch integrations or certifications.

Responsibilities

• Provide technical and functional production support for BASE24 platforms.
• Support ATM acquiring, debit card authorization, POS and e-commerce switching.
• Investigate authorization failures, routing issues and payment processing exceptions.
• Maintain BASE24 switch configuration and settlement processing.

Skills

BASE24

Payment switching

SRE

SQL development

PCI DSS

ISO8583

DevOps

Incident management

Tools

IBM MQ

Dynatrace

Splunk

Grafana

Jira

Confluence

ServiceNow

Python scripting

Shell scripting

Job description

Senior BASE24 Application Support Engineer - Cards and Payments

Role: Senior BASE24 Application Support Engineer - Location: Abu Dhabi, United Arab Emirates - Industry: I T and Services - Function: Systems Support - Experience: 8-10 years - Job Type: Full Time - Work Arrangement: On-site

Dicetek LLC is seeking an experienced Senior BASE24 Application Support Engineer to support mission-critical Cards and Payments technology platforms in Abu Dhabi, United Arab Emirates. The role focuses on production support, Site Reliability Engineering (SRE), payment switching, transaction processing, database troubleshooting and operational resilience across high-volume banking payment environments. The successful candidate will have strong hands-on experience with BASE24 Classic and/or BASE24-eps, ATM acquiring, debit card authorization, POS and e-commerce switching, and integrations with Visa, Mastercard and UAE Switch. Candidates should have 8-10 years of relevant experience in banking and payments technology, including a minimum of 5 years supporting BASE24 or BASE24-eps platforms. Strong SQL expertise across Microsoft SQL Server, Oracle and PostgreSQL, combined with knowledge of ISO8583 messaging, payment security and 24x7 production operations, is essential.

Job Details

Country: United Arab Emirates

City: Abu Dhabi

Industry: I T and Services

Function: Systems Support

Salary: Not disclosed

Gender: No Preference

Candidate Nationality: Not specified

Job Type: Full Time

Work Arrangement: On-site

Key Responsibilities

BASE24 Payment Switching and Application Support

• Provide technical and functional production support for BASE24 Classic and/or BASE24-eps payment switching platforms.
• Support ATM acquiring, debit card authorization, POS transactions and e-commerce payment switching.
• Investigate authorization failures, transaction routing issues and payment processing exceptions.
• Support BASE24 switch configuration, network interfaces and settlement processing.
• Analyse transaction flows across card issuing, acquiring and payment switching systems.
• Troubleshoot integration issues involving payment networks, card schemes and connected banking applications.
• Maintain reliable operation of high-volume, business-critical payment switching environments.

Cards and Payments Operations

• Support the end-to-end card transaction lifecycle, including authorization, clearing, settlement and reconciliation.
• Investigate issues involving ATM transactions, debit cards, POS terminals and e-commerce payments.
• Analyse EMV and contactless payment processing requirements.
• Support chargeback and dispute-related transaction investigations.
• Investigate transaction discrepancies affecting payment processing and settlement.
• Apply knowledge of tokenization and 3-D Secure within card payment environments.
• Collaborate with relevant teams to resolve operational and technical payment processing issues.

Payment Messaging and Scheme Integration

• Analyse ISO8583 messages and transaction processing flows.
• Investigate payment authorization requests, responses and transaction routing issues.
• Support integrations involving Visa, Mastercard and UAE Switch.
• Troubleshoot payment scheme connectivity and transaction processing failures.
• Support technical activities associated with payment scheme integrations and certifications.
• Analyse network interfaces and payment message exchanges between integrated systems.
• Coordinate with payment schemes, vendors and internal technical teams during issue investigation and resolution.

Database Development and Transaction Analysis

• Perform advanced SQL analysis and troubleshooting using Microsoft SQL Server, Oracle and PostgreSQL.
• Develop complex SQL queries, stored procedures, functions and database views.
• Analyse authorization transactions, settlement records and reconciliation data.
• Investigate transaction discrepancies using SQL-based analysis and reporting.
• Perform authorization trace analysis to identify transaction processing issues.
• Develop and maintain SQL scripts for operational investigation and performance analysis.
• Analyse database execution plans and identify inefficient queries.
• Apply indexing strategies and query optimization techniques to improve database performance.
• Troubleshoot database-related application errors and transaction processing delays.

Production Support and Site Reliability Engineering

• Support 24x7 high-volume, high-availability payment processing environments.
• Monitor production application health, transaction processing and operational performance.
• Investigate critical production incidents affecting payment switching and related systems.
• Apply Site Reliability Engineering principles to improve availability, resilience and operational stability.
• Conduct Root Cause Analysis (RCA) and support corrective and preventive actions.
• Identify opportunities for operational automation and improved monitoring.
• Support performance, capacity and production-readiness assessments.
• Coordinate with relevant teams to restore services and minimize disruption to payment operations.

Infrastructure and Middleware Support

• Troubleshoot application issues involving IBM MQ, APIs, web services and middleware.
• Support payment applications operating on Linux, Unix, AIX and Windows Server environments.
• Investigate application connectivity, middleware communication and load-balancing issues.
• Analyse technical dependencies across application, database, operating system and infrastructure components.
• Collaborate with infrastructure, networking and middleware teams to resolve complex production issues.
• Support reliable communication between BASE24 platforms and integrated enterprise applications.

Security and Payment Compliance

• Apply knowledge of Hardware Security Modules (HSMs) and payment cryptographic processes.
• Support payment security requirements involving Public Key Infrastructure (PKI), TLS/SSL and encryption standards.
• Understand cryptographic key management requirements within card payment environments.
• Follow applicable Payment Card Industry Data Security Standard (PCI DSS) requirements.
• Support security controls and operational compliance activities related to payment applications.
• Collaborate with relevant security and technology teams to investigate security-related application issues.

System Integration, Testing and Release Support

• Participate in requirements analysis and technical impact assessments.
• Support system integration activities involving payment switching and connected banking applications.
• Assist with System Integration Testing (SIT) and User Acceptance Testing (UAT).
• Support release management and production deployment activities.
• Conduct technical dependency assessments and production-readiness checks.
• Collaborate with application, infrastructure and vendor teams during planned changes.
• Support post-deployment validation of payment processing functionality and operational stability.

Monitoring, Automation and Operational Improvement

• Use Dynatrace, Splunk, Grafana or equivalent tools for application monitoring and observability.
• Analyse performance indicators, transaction processing behaviour and operational alerts.
• Develop automation scripts using Python or Shell scripting.
• Apply CI/CD and DevOps practices to support operational efficiency.
• Use Jira, Confluence and ServiceNow for incident tracking, documentation and team coordination.
• Identify recurring operational issues and opportunities for preventive improvements.
• Maintain technical documentation, incident records and operational procedures.

High Availability and Disaster Recovery

• Support High Availability (HA) and Disaster Recovery (DR) requirements for payment switching platforms.
• Apply knowledge of Recovery Time Objectives (RTO) and Recovery Point Objectives (RPO).
• Participate in operational resilience and recovery-readiness assessments.
• Support performance and capacity management for high-volume transactional systems.
• Identify technical risks affecting payment platform availability and recovery capabilities.
• Collaborate with infrastructure and application teams to strengthen production resilience.

Required Qualifications and Experience

• 8-10 years of relevant experience in banking and payments technology.
• Minimum 8 years of experience in production support, application support, Site Reliability Engineering or infrastructure support for card payment environments.
• Minimum 5 years of hands-on experience supporting BASE24 Classic or BASE24-eps platforms.
• Strong experience in ATM acquiring, debit card authorization and payment switching.
• Practical knowledge of card issuing, acquiring, clearing, settlement and reconciliation.
• Experience supporting Visa, Mastercard, UAE Switch and related payment scheme integrations or certifications.
• Strong understanding of ISO8583 messaging and the complete card transaction lifecycle.
• Proven experience supporting 24x7 high-volume and high-availability production systems.
• Strong hands-on experience with Microsoft SQL Server, Oracle and PostgreSQL databases.
• Ability to develop complex SQL queries, stored procedures, functions and views.
• Experience with transaction analysis, authorization tracing and settlement reconciliation using SQL.
• Strong understanding of query optimization, execution plans, indexing and database performance troubleshooting.
• Experience supporting system integration, SIT, UAT, release management and production readiness.
• Knowledge of PCI DSS, payment security, high availability, disaster recovery and capacity management.
• Strong experience working with business stakeholders, technology teams, external vendors and payment schemes.

Required Technical Skills

Payment Switching and Card Technologies

• BASE24 Classic.
• BASE24-eps.
• ATM acquiring.
• Debit card authorization.
• POS and e-commerce switching.
• Card issuing and acquiring.
• EMV and contactless payments.
• Authorization processing and transaction routing.
• Clearing and settlement.
• Transaction reconciliation.
• Chargebacks and disputes.
• Tokenization.
• 3-D Secure.

Payment Messaging and Networks

• ISO8583.
• Visa payment scheme integration.
• Mastercard payment scheme integration.
• UAE Switch.
• Payment network interfaces.
• Payment authorization message analysis.
• End-to-end card transaction processing.

Database Technologies

• Microsoft SQL Server.
• Oracle Database.
• PostgreSQL.
• Advanced SQL development.
• Stored procedures, functions and views.
• SQL execution plan analysis.
• Query optimization and indexing.
• Database performance troubleshooting.
• Transaction reconciliation reporting.
• Authorization trace analysis.
• Settlement data investigation.

Infrastructure and Middleware

• IBM MQ.
• APIs and web services.
• Linux.
• Unix.
• AIX.
• Windows Server.
• Enterprise middleware.
• Load balancers.
• Application and infrastructure troubleshooting.

Payment Security

• Hardware Security Modules (HSM).
• Public Key Infrastructure (PKI).
• TLS/SSL.
• Encryption standards.
• Cryptographic key management.
• PCI DSS.

SRE, DevOps and Operational Tools

• Site Reliability Engineering principles.
• Incident and problem management.
• Root Cause Analysis.
• Monitoring and observability.
• Performance and capacity management.
• Dynatrace.
• Splunk.
• Grafana.
• Python scripting.
• Shell scripting.
• CI/CD and DevOps.
• Jira.
• Confluence.
• ServiceNow.

Professional Competencies

• Strong analytical thinking and advanced technical troubleshooting.
• Ability to investigate complex payment transaction and database issues.
• Effective incident management and decision-making under operational pressure.
• Excellent technical documentation and reporting skills.
• Strong communication and stakeholder management capabilities.
• Ability to collaborate with payment schemes, vendors and cross-functional technology teams.
• Attention to detail when analysing authorization, reconciliation and settlement data.
• Strong ownership of production support responsibilities.
• Ability to work effectively in high-availability banking environments.

Candidate Profile

The ideal candidate will be a senior payment technology professional with extensive hands-on experience supporting BASE24 payment switching platforms and high-volume banking transaction systems. The role requires deep knowledge of ATM acquiring, debit card authorization, POS and e-commerce switching, ISO8583 messaging and card scheme integrations. Strong SQL development and database performance analysis skills are particularly important for investigating transaction processing, authorization and settlement issues. Candidates should demonstrate the ability to manage critical production incidents, troubleshoot complex application and infrastructure dependencies, and support reliable 24x7 payment operations while maintaining security, performance and operational resilience.