HP NonStop (Tandem) Developer
Location: Toronto, ON
Type: Contract
About the Role
We are seeking a Tandem Java Developer to provide Level 2/Level 3 production support, development, enhancement, troubleshooting, and maintenance for critical Capital Markets, Treasury, Payments, Processing, Settlement, and Reconciliation applications running on HP NonStop (Tandem) platforms.

The role requires strong hands‑on experience with HP NonStop/Tandem environments, Java/application support, databases, middleware, and production incident management.

Responsibilities

Provide Level 2/Level 3 support for business‑critical applications running on HP NonStop/Tandem platforms.

Perform hands‑on development, enhancements, troubleshooting, and maintenance of ATLAS applications.

Analyze and resolve production incidents, service disruptions, and application performance issues within defined SLAs.

Ensure stability, availability, and performance of high‑volume transaction processing systems.

Collaborate with business users, operations teams, architects, infrastructure, and engineering teams to resolve technical issues and implement improvements.

Perform root cause analysis (RCA) and implement preventive measures to minimize recurring incidents.

Support application deployments, releases, upgrades, and environment changes across development, testing, and production.

Participate in production release and change‑management activities.

Troubleshoot application, database, middleware, and infrastructure‑related issues within the NonStop environment.





HP NonStop / Tandem Platform Administration

Administer and support HP NonStop (Tandem) systems to maintain high availability and operational resilience.

Utilize TACL, FUP, SCF, OSS, SQL/MP, SQL/MX, and Enscribe for system administration, troubleshooting, and performance optimization.

Monitor NonStop system health, capacity, availability, and performance.

Support DSM/SCM activities, including software deployment, version control, and change management.

Work with infrastructure/SSHW teams to maintain operating system currency and implement recommended HPE NonStop SPRs and critical patches.

Participate in infrastructure maintenance, system upgrades, hardware refreshes, and disaster recovery activities.

Database & Storage Management

Support database creation, configuration, maintenance, troubleshooting, and optimization.

Manage SQL/MX, SQL/MP, and Enscribe database environments.

Ensure database availability, integrity, and performance for critical applications.

Assist with database replication and synchronization between NonStop and external environments.

Support storage planning, disk sizing, backup strategies, data retention, recovery testing, and restoration activities.





Coordinate with infrastructure and automation teams for storage housekeeping and SAVEABEND file management.

Communications & Middleware Support

Support communication subsystems and network connectivity within the HP NonStop/Tandem workplace.

Configure and troubleshoot SSH, SSL, and secure communication protocols.

Manage and support WebSphere MQ for NonStop, including integrations and message flows.

Support Secure DPS and comForte configurations for secure transaction processing.

Collaborate with network and security teams to maintain reliable connectivity and compliance.

Required Skills

Strong hands‑on experience with HP NonStop / Tandem

Java application development and/or production support experience

Level 2/Level 3 application support

Experience supporting Capital Markets / Treasury / Payments / Settlement / Reconciliation applications

TACL, FUP, SCF, OSS

SQL/MP, SQL/MX, Enscribe

Production incident management and troubleshooting

Root Cause Analysis (RCA)

Application deployment and release support

Database and storage management

Experience with high‑availability, mission‑critical transaction processing environments

Preferred Skills

WebSphere MQ for NonStop

Secure DPS

comForte

SSH / SSL

DSM/SCM

HPE NonStop SPRs and patching

Disaster recovery and business continuity

Hardware refresh and NonStop infrastructure upgrades

Capital Markets and financial transaction processing experience

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📌 HP NonStop (Tandem) Developer (Ontario)
🏢 Kardow
📍 Ontario