Senior Engineer

Senior Engineer - Ghana

Qualifications & Experience

BSc in Computer Science / Information Technology

5-8+ years experience as a Systems Administrator

SQL Certification (advantageous)

Project Management Certification (recommended)

Experience administering MS Windows Server environments

Experience with EFT & eCommerce payment systems

Proficient with ACIs Postilion EFT Transaction Switch suite :

Real-Time Framework (v4.x & 5.x)

Post Office, PostCard, Portal, TermApp, Postilion Active-Active

Knowledge of payment card tech (EMV, magnetic stripe, contactless)

Understanding of card types (debit, credit, pre-paid, gift cards)

Knowledge of Hardware Security Modules

Experience with Postilion upgrades, migrations, monitoring, maintenance

Strong understanding of ATM, POS & mobile transaction flows

Familiar with PCI DSS, PA DSS & ISO8583 protocol

Knowledge of 3rd party interfaces (Visa, Mastercard, UPI, Bankserv, etc.)

Key Responsibilities

System Configuration, Monitoring & Support

Maintain and configure Postilion EFT systems

Ensure SLA uptime targets are met

Implement system changes under change control

Monitor production systems and respond to alerts

Manage EFT software installations and fault call allocations

Define operational routines and service metrics

Conduct routine audits and system maintenance

System Release & Testing

Test and validate new system releases and updates

Ensure accuracy of release / upgrade testing

Security Compliance

Ensure full PCI and security task compliance

Execute recurring security tasks (e.g. encryption key changes)

Cross-Functional Support

Resolve customer queries and provide technical support

Assist operations with environment prep for patching

Specify, test, and implement new systems or upgrades

Conduct disaster recovery planning and testing

Documentation & Capacity Planning

Maintain up-to-date technical and DR documentation

Forecast and plan system capacity accurately

Quality Assurance & Supervision

Align test strategies with Postilion changes

Supervise and QA junior engineer work

Client Communication

Establish technical communication with clients

Provide clear and timely management / client feedback

Way of Work

Ensure proper formatting, spelling, and professionalism in all documents

Adhere to approval processes and meet all deadlines

Time-Sheet Management

Track time in Jira (Tempo), 8 hrs / day average

Use accurate project codes

Business Risk Management

Comply with company policies and procedures

Complete all mandatory training

Proactively raise business risks to manager