ISI

What ISI does

ISI (Independent Systems Integrators Pty Ltd) is a privately held, 100% Australian-owned IT services company founded in 1991 and headquartered in Sydney, with additional offices in Melbourne and Brisbane. The firm is a single-vendor mainframe specialist that delivers managed services, consulting, hardware and software resale, migration services, and short-term skills provision for IBM Z, LinuxOne, IBM Power Systems and IBM Storage environments. Its client base is concentrated among Australian federal and state government agencies (including the Department of Defence, Department of Home Affairs, ASIC, ACIC and NSW Police) and large commercial enterprises in financial services, insurance and other industries (such as the Reserve Bank of Australia, Bendigo Bank, IAG and Nissan).

The company's technology stack is anchored on IBM Z mainframe infrastructure with hybrid cloud integration, SAP HANA on IBM Power Systems, and proprietary tooling including the ISI Mainframe Reference Architecture and automated legacy language conversion technology that re-platforms mainframe applications to contemporary environments such as C# or Java. ISI also operates an in-house SCEC-certified Secure Operations Centre, which is a meaningful differentiator given the PROTECTED-level classified workloads of its federal clients. The firm is the only accredited IBM Z Series Software & Infrastructure Platinum Partner in ANZ and an IBM Global Storage Specialty Programme member, providing it with privileged access to IBM's mainframe and storage roadmaps.

ISI's commercial model spans managed services billed on a predictable, volume-based subscription (annual cadence), multi-year professional services consulting engagements, transactional hardware and software sales (including IBM Z, LinuxOne, Power Systems, Storage and tape infrastructure) and pay-as-you-go Skills on Demand. Go-to-market is sales-led and consultative, combining enterprise field sales targeting federal/state agencies and large commercial accounts with partner referrals from IBM, Accenture and Leidos, supported by a content marketing engine built around mainframe thought leadership.

Name

ISI

Legal name

Independent Systems Integrators Pty Ltd

Website

https://isi.com.au

Company type

Private

Founded year

1991

Operating status

Operating

Headcount range

11–50 employees

Short description

ISI is a 100% Australian-owned, IBM Z Platinum mainframe specialist delivering managed services, consulting, migration and cloud-modernisation to Australian federal/state government agencies and large commercial enterprises across financial services, insurance and other industries.

Ownership category

akta.pro rank

Product category

Mainframe Managed IT Services

NAICS

Computer Facilities Management Services (541513), Computer Systems Design Services (541512), Custom Computer Programming Services (541511)

SIC

Services-Computer Integrated Systems Design (7373), Services-Computer Programming, Data Processing, Etc. (7370), Services-Computer Programming Services (7371)

akta.pro primary industry

ITSM Managed Services (Run/Operate/Optimize) (BPAEAJAN)

akta.pro secondary industries

Application Maintenance & Support (AMS) (BPAEAFAC), IT Asset Discovery, Inventory & CMDB Services (BPAEAOAE), ITIL/ITSM Process Consulting & Implementation (BPAEAJAB)

Keywords

• Mainframe managed services
• IBM Z infrastructure
• Mainframe modernization
• Hybrid cloud migration
• Enterprise IT consulting

Headquarters

HQ city

Sydney

HQ country

Australia

HQ region

Oceania

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Supply Chain

Revenue model

1. Managed Services: Complete operating system and infrastructure management including mainframe (z/OS, z/VM, Linux on z) and mid-range (AIX, Linux) services. Operations management providing unmatched flexibility and customisation. Predictable, volume-based pricing model.
2. Consulting Services: Accredited SME consulting services for application and platform modernisation, digital transformation, performance engineering, systems management, analytics, security and compliance, multi-cloud management and containerisation.
3. Hardware and Software Sales: Design, configuration, build and sale of IBM Z, Linux on Z (LinuxOne), IBM Power hardware, IBM Storage infrastructure, storage switches and fabric, and IBM tape infrastructure. Sale of associated mainframe software licenses.
4. Skills on Demand: Short-term mainframe talent and skills provision including system programming, security configuration, storage management, automation coding, database administration, and project management.
5. Migrations: Hardware and software migration services including Z Systems hardware upgrades, mainframe software migrations, datacentre migrations, and cloud migration of onsite mainframe applications to private, public or hybrid cloud.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels5 records

Core offering

ISI delivers mainframe-focused managed services, professional consulting, hardware/software design and supply, and migration services built around IBM Z, LinuxOne, IBM Power, and IBM Storage platforms. Its two top-level offerings are Optimised Mainframe Services (managed operations, skills on demand, migrations, cost optimisation, monitoring, security) and Cloud Solutions for Mainframe (cloud-native enablement, containerisation, business systems modernisation, enterprise storage). Services are sold to federal and state government agencies and large commercial enterprises across Australia, with a small set of proprietary assets including the ISI Mainframe Reference Architecture, automated language conversion technology, and a SCEC-certified Secure Operations Centre.

Product overview

ISI is a 100% Australian owned and operated IT services company that is not a product company but rather offers a comprehensive portfolio of mainframe-focused professional and managed services. The core offerings consist of Optimised Mainframe Services (covering managed services, skills on demand, migrations for hardware/software/datacentre/cloud, cost optimisation, operational monitoring, health checks, integration services, and security assurance) and Cloud Solutions for Mainframe (enabling hybrid cloud integration with cloud native experience, process automation, containerisation, business systems modernisation, and enterprise storage strategy). As an IBM Platinum Business Partner, ISI specialises in IBM Z, LinuxOne, and IBM Power Systems infrastructure, offering expertise in SAP HANA deployments on IBM Power Systems and IBM Z hybrid cloud platforms. The company provides end-to-end services from infrastructure design and configuration to managed operations, supporting federal and state government agencies and commercial enterprises across Australian industries.

Differentiator

Problem solved

Functional benefit

Brands

• Mainframe Expert Hub: A platform for mainframe professionals to join ISI's team and access career opportunities in mainframe expertise, cloud enablement, and application modernisation

Products and services

• Optimised Mainframe Services Umbrella managed mainframe services offering covering performance management, secure operations, cost and risk optimisation, application transformations, and consulting services for z/OS, z/VM, and Linux on Z environments. Sold to federal and state government agencies and large commercial enterprises across Australia.
• Cloud Solutions for Mainframe Hybrid cloud enablement for mainframe workloads covering cloud-native experience, process automation, cloud enablement with containerisation, services modernisation, and enterprise storage strategy, allowing mainframe applications to integrate with private, public, or hybrid cloud environments.
• Managed Services Complete operating system and infrastructure management for mainframe (z/OS, z/VM, Linux on z) and mid-range (AIX, Linux) environments with predictable volume-based pricing designed to reduce OPEX and CAPEX for clients.
• Skills on Demand Short-term provision of specialist mainframe talent covering system programming, security configuration, storage management, automation coding, batch scheduling, database administration, network management, and project management on a pay-as-you-go basis.
• Hardware Migrations Hardware migration services for IBM Z, IBM P, IBM, EMC and HDS storage, SAN fabric and replication switches, including Z Systems hardware upgrades, end-to-end workload transitions, and enterprise tape migration.
• Software Migrations Mainframe software migrations across all major vendors covering z/OS, z/VM, Linux on z platforms, automation tools, batch processing, storage management, network communications, security, middleware, databases, and file transfer systems.
• Datacentre Migration Migration of mainframe and associated infrastructure from one datacentre to another, enabling hot failover, disaster recovery, and third-copy solutions for Australian enterprise clients.
• Cloud Migration Migration of onsite mainframe applications and infrastructure to private, public or hybrid cloud environments, including advisory and support integration to cloud platforms.
• Consulting Services Accredited SME consulting for application and platform modernisation, digital transformation, performance engineering, systems management, analytics, security and compliance, multi-cloud management, containerisation, and roadmap advisory using the ISI Mainframe Reference Architecture.
• Operational Monitoring 24x7x365 operational monitoring and support across all mainframe disciplines delivered from ISI's SCEC-certified Secure Operations Centre (SOC), which is cleared to handle classified data up to PROTECTED level.
• Health Checks Hardware, software, security, and performance health checks for IBM Z, IBM, EMC, and HDS storage platforms and z/OS and z/VM operating systems.
• Integration Services Integrated mainframe hardware platform design and implementation, software stack evaluation, security product integration, cloud solutions integration, and service management toolset integration for enterprise clients.
• Security Assurance Security tools installation, configuration review, alerting implementation, and compliance assessment for z/OS and z/VM operating systems, including SIEM integration for security event management.
• IBM Z / LinuxOne / Power Hardware Design and Build Design, configuration, and build of hardware infrastructure for IBM Z, Linux on Z via LinuxOne, and IBM Power systems, plus supply of associated mainframe software licenses.
• IBM Storage Infrastructure Design and provision of IBM Storage infrastructure, with architects and engineers ensuring successful end-to-end transition to new storage infrastructure for clients.
• IBM Tape Infrastructure Support for all IBM tape storage, both physical and virtual, remote and local, including tape migration from existing infrastructure to state-of-the-art tape technologies.
• SAP HANA on IBM Power Systems Expert SAP HANA database implementation on IBM Power Systems providing flexible, resilient, and high-performance infrastructure for big data workloads, supporting up to 16 production logical partitions on a single physical server.

Quantifiable outcome

• Significant flexibility and customisation not available from larger global players
• +2 more outcomes

Named customers12 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Six partnerships are on record, tiered secondary and core.

• Red HatsecondaryTechnology or Integration · 1 January 2010Fully endorsed Red Hat partner for over a decade. Red Hat is at the forefront of open-source software development. ISI assists in all manner of engagements regarding Red Hat solutions including Red Hat Enterprise Linux.
• IBMcoreTechnology or Integration · 1 January 1995IBM Platinum Business Partner since 1995. ISI is the only accredited IBM Z Series Software & Infrastructure Platinum Partner in ANZ. Provides access to all IBM products and services including IBM Z, LinuxOne, Power Systems, and Storage. Appointed to IBM's Global Storage Specialty Programme - an elite group of Business Partners with advanced skills in architecting, deploying and managing storage solutions.
• Leidos AustraliasecondaryImplementation/ SI/ Consulting PartnerSuccessful partnership over 5 years delivering ICT Operational Services to Australian Federal Government agencies. Leidos provides excellence in ICT Services and Innovative ICT Solutions to solve business needs.
• HCL SoftwaresecondaryTechnology or IntegrationPartnership with HCL Software provides innovative and mission-critical software solutions for Mainframe Modernisation, Optimisation or Transformation Journey. HCL Software develops, markets and supports over 30 product families in Customer Experience, Digital Solutions, DevSecOps, and Security and Automation.
• AccenturesecondaryImplementation/ SI/ Consulting PartnerStrategic partnership to help clients embark on and navigate the Mainframe Transformation Journey. Accenture's deep industry expertise combined with ISI's ICT Operational Services and Mainframe Systems Modernisation and Optimisation services delivers mission-critical transformation projects.
• AdvancedsecondaryStrategic or Co-development PartnerStrategic partnership primarily delivering mainframe language conversion ready for hybrid cloud enablement. Advanced is a leading international provider of application modernisation services with unique expertise in the legacy modernisation market and over 500 modernisation projects completed worldwide.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Tectrade: Tectrade is a UK-headquartered specialist in mainframe storage, data protection and IBM Spectrum Protect services. It overlaps directly with ISI's IBM Storage, tape infrastructure, and hybrid-cloud data management offerings. ISI even publishes a Tectrade case study on its website.
• Advanced: Advanced is an ISI strategic partner and a leading international mainframe modernisation provider with 500+ modernisation projects. It directly overlaps with ISI's language-conversion and modernisation services, and is both a partner and a competitor for mainframe modernisation engagements.
• Skaylink: Skaylink is a Germany-based specialist mainframe and hybrid cloud services provider with strong ties to IBM. It competes head-to-head with ISI for IBM Z managed services and modernisation projects, particularly in regulated European markets.
• Mainline Information Systems: Mainline is a US-based IBM Platinum Business Partner focused on enterprise IT infrastructure including IBM Z, Power, and storage. It is comparable to ISI as a mid-sized specialist Platinum partner delivering managed infrastructure services to enterprise and government clients.
• Sirius Computer Solutions: Sirius is a large US enterprise infrastructure integrator with deep IBM partnerships and hybrid cloud practices. It is comparable to ISI's IBM Z and hybrid cloud integration offerings, though at materially larger scale.

Broad incumbents

• Micro Focus: Micro Focus (now OpenText) is a major mainframe software tools vendor offering application modernisation, COBOL development and DevOps for IBM Z. It overlaps with ISI's modernisation tooling and language-conversion capabilities at the software layer.
• DXC Technology: DXC Technology is a global IT services major with significant mainframe managed-services and modernisation capabilities inherited from CSC and HP Enterprise Services. It is a comparable broad incumbent competing for large enterprise and government mainframe contracts.
• HCL Technologies: HCL is a global IT services major with a dedicated mainframe modernisation practice through HCL Software (ISI's partner). It competes for large mainframe modernisation and managed-services mandates and represents broad-incumbent competition across ANZ.
• Kyndryl: Kyndryl is the IBM-managed infrastructure services spin-off and the largest pure-play mainframe services provider globally. It directly competes with ISI for IBM Z managed services engagements across ANZ and represents both the primary competitive threat and a potential strategic acquirer.

Regional players

• Leidos Australia: Leidos is ISI's federal-government delivery partner for ICT Operational Services to Australian federal agencies. It is comparable as both an indirect competitor (delivering mainframe-adjacent services to the same federal client base) and a key channel partner.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/independent-systems-integrators-pty-ltd
• Facebookfacebook.com/ISI_Technology-127565110654375

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ISI