Senior IBMi Engineer

ARK Solution; Warszawa; On-site; PLN 180,000 - 240,000; Full time

Job summary

ARK Solution in Poland is seeking a Senior IBMi Engineer based in Poland (Warsaw/Krakow/Gdansk) for an on-site contract role to design, implement, and manage Zero Trust security transformations on IBM i environments.

You will lead migration of legacy security to Zero Trust, enforce least-privilege, configure IBMi security features, and collaborate with security architects to ensure availability and performance while guiding operational teams through migration plans.

Qualifications

• Strong knowledge of IBMi platform, RPG, and CL programming.
• Proficiency in database management, SQL, and query optimization on the IBMi system.
• Experience in troubleshooting, diagnosing, and resolving system issues.
• Understanding of system integration, architecture, and communication protocols.
• Excellent problem-solving skills and attention to detail.
• Ability to collaborate with cross-functional teams and adapt to dynamic environments.
• Familiarity with system upgrades, patches, and migrations.
• Experience with SDLC and project management methodologies is advantageous.

Responsibilities

• Design Zero Trust security architecture for IBMi environments.
• Implement least-privilege access principles on IBMi systems.
• Migrate from traditional perimeter-based security to the Zero Trust model.
• Configure zone-based segmentation for IBMi workloads.
• Harden IBMi operating systems (OS/400, IBM i) according to Zero Trust standards.
• Configure and manage IBMi security features (User Profiles, Authorization Lists, Object Authorities).
• Design and enforce granular access policies for databases, applications, and system functions.
• Integrate IBMi with modern Identity and Access Management (IAM) solutions.
• Implement network segmentation for IBMi environments.
• Configure exit points and network security controls.
• Design secure API gateways for IBMi applications.
• Deploy VPN and Zero Trust Network Access (ZTNA) solutions.
• Monitor and analyze network traffic to/from IBMi systems.
• Collaborate with security architects, network teams, and application owners.
• Document Zero Trust architecture, configurations, and procedures.
• Train operational teams on Zero Trust principles and IBMi security management.
• Develop migration plans with minimal business disruption.

Skills

IBMi platform

RPG

CL programming

SQL

Troubleshooting

System integration

SDLC

Project management

Education

Bachelor’s degree in Computer Science / IT or related field

Job description

Description

This is a contratual, on-site role for a Senior IBMi Engineers based in Poland (Warsaw/ Krakow/ Gdansk). The Senior IBMi Engineers will design, develop, and maintain software solutions on the IBMi platform. We are seeking an experienced IBMi Engineer to lead and execute the migration of IBMi (AS/400) environments to a Zero Trust security architecture. The successful candidate will be responsible for designing, implementing, and managing the transformation from traditional IBMi security models to a modern Zero Trust architecture, ensuring enhanced security while maintaining system availability and performance. Key responsibilities include:

Key Responsibilities

• Design Zero Trust security architecture for IBMi environments
• Implement least-privilege access principles on IBMi systems
• Migrate from traditional perimeter-based security to the Zero Trust model
• Configure zone-based segmentation for IBMi workloads
• Harden IBMi operating systems (OS/400, IBM i) according to Zero Trust standards
• Configure and manage IBMi security features (User Profiles, Authorization Lists, Object Authorities)
• Design and enforce granular access policies for databases, applications, and system functions
• Integrate IBMi with modern Identity and Access Management (IAM) solutions
• Implement network segmentation for IBMi environments
• Configure exit points and network security controls
• Design secure API gateways for IBMi applications
• Deploy VPN and Zero Trust Network Access (ZTNA) solutions
• Monitor and analyze network traffic to/from IBMi systems
• Collaborate with security architects, network teams, and application owners
• Document Zero Trust architecture, configurations, and procedures
• Train operational teams on Zero Trust principles and IBMi security management
• Develop migration plans with minimal business disruption

Requirements

• Strong knowledge of IBMi platform, RPG, and CL programming
• Proficiency in database management, SQL, and query optimization on the IBMi system
• Experience in troubleshooting, diagnosing, and resolving system issues
• Understanding of system integration, architecture, and communication protocols
• Excellent problem-solving skills and attention to detail
• Ability to collaborate with cross-functional teams and adapt to dynamic environments
• Familiarity with system upgrades, patches, and migrations
• Bachelor’s degree in Computer Science, Information Technology, or a related field; relevant work experience may be considered
• Experience with software development life cycle (SDLC) and project management - methodologies is advantageous