Sr. Software Engineer I (Integrations) at Pakistan Single Window Karachi 2026

About the Job

Pakistan Single Window (PSW) is a national government initiative under the Ministry of Commerce, Government of Pakistan. PSW is building a unified digital platform to streamline cross-border trade by enabling seamless data and document exchange between traders, customs authorities, shipping lines, and regulatory agencies. The integration layer connecting these diverse systems is central to PSW's ability to function at national scale, making the integrations engineering team a critical component of the entire platform.

PSW is hiring a Sr. Software Engineer I (Integrations) (Job Code: TS Core 016) based in Karachi, Sindh. This is a full-time, on-site role within the Technology Solutions department. The Senior Software Engineer will design, build, and maintain enterprise integration solutions on IBM ACE/MQ, develop and test integration workflows and APIs, provide technical leadership to junior engineers, and create operational documentation and SOPs for the integrations team.

Job Details

Responsibilities

• Write code to create and maintain integration solutions on IBM ACE/MQ and its support, including data mapping, transformation, LSQL, queues and connectors, and can lead juniors technically
• Develop and implement integration workflows, scripts, and APIs using relevant integration technologies and programming languages
• Plan and conduct testing of integration solutions to identify and address issues, ensuring the reliability and performance of the integration
• Create and maintain documentation for integration solutions, including specifications and configurations
• Provide regular reports on the status of integration projects and activities
• Develop and maintain good working relationships with vendors, customers, and internal stakeholders
• Research and address integration-related issues and challenges by conducting root cause analysis and implementing effective solutions
• Create SOPs, troubleshooting guides for Support and maintenance activities and Handover to operations

Requirements

• Bachelor's/Master's degree in a related field (e.g. Computer Science, Software Engineering, IT)
• 3-5 years of experience in integration development
• Highly proficiency and hands-on technical leadership in the following technologies:
  • Middleware: IBM App Connect
  • Understanding of API Management
  • Message Queue: IBM MQ 9.x
  • Enterprise Applications: EAI, SOA, Microservices, Containers, Service orchestration
  • Database: SQL Server or Oracle
  • Programming Languages: Any programming language or framework (Java/.Net)
  • Other: Eclipse, IFHUB, Git, GitFlow, Linux
• Strong interpersonal, written, and verbal communication skills
• Ability to perform comfortably in a fast-paced, deadline-oriented, agile environment
• Self-motivated, quick learner, and a responsive team player with solid Leadership, Problem-solving, debugging, and analytical skills

Benefits

• Competitive salary
• Fuel Card
• Health benefits
• Professional development opportunities
• Inclusive work culture & much more

How to Apply

• Apply online via the Workable portal
• Job Code: TS Core 016
• Last Date: 30 June 2026
• Pakistan Single Window, Karachi, Sindh, Pakistan

How to Prepare for This Role

1. This role is centered on IBM middleware and enterprise integration, not general software engineering. PSW's integration layer connects customs authorities, shipping lines, traders, and regulatory agencies at a national scale. Prepare by focusing on the specific technologies listed, not broad programming skills.
2. IBM App Connect and IBM MQ 9.x are the core technical requirements and will almost certainly be tested. Be ready to walk through how you have built integration flows, configured message queues, handled LSQL message transformation, and managed error handling and dead-letter queues in a production environment.
3. Review enterprise integration patterns including EAI, SOA, Microservices, and Service Orchestration. Interviewers expect architecture-level discussion, not just implementation steps. Be able to explain when to use a message queue versus a direct API call, and how you have handled container-based service orchestration.
4. Brush up on your Java or .Net integration code, Git and GitFlow branching workflows, Eclipse IDE usage, and Linux command-line operations. These are all explicitly listed in the requirements and signal day-to-day tooling in this role.
5. The role requires creating SOPs and troubleshooting guides for handover to operations teams. Highlight any technical documentation, runbooks, or operational guides you have authored in previous positions. This demonstrates the production-readiness and junior mentorship mindset PSW expects at the senior engineer level.
6. Prepare examples where you led technical problem-solving under deadline pressure in an agile environment, as the requirements call out fast-paced, deadline-oriented agile experience alongside leadership and debugging skills.