Engineering sovereign capability

Advanced technology. Sovereign outcomes.

SolStak is the cleared, Australian-owned team that builds, integrates and runs sovereign ICT — and stays hands-on from prototype to production. Cyber, AI, cloud and mission systems for Defence and critical enterprise, delivered by people who finish what they start. It’s why we’re also the team called in when someone else’s programme stalls.

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Digital globe — SolStak sovereign ICT for Australia

Australian Owned Sovereign · Secure · Trusted

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DISP Member

Defence Industry Security Program

NV1 / NV2 / PV

Cleared Personnel

IRAP Aligned

Assessment & Authorisation

Australian Owned

Operated & Sovereign

Defence Experience

Proven Capability Since 2018

What we do

Engineering that delivers.

Six capabilities, one team. We design, build, secure and run — and because the same people carry a programme end to end, the handoffs that usually break things never happen.

Sovereign Software Development

Mission-critical software on Australian soil by security-cleared full-stack engineers — sovereign, scalable, and ready from prototype through production.

Sovereign AI

Sovereign AI backed by our in-house Data Scientist — academia partnerships, rapid prototyping, GPU platforms, custom models, and end-to-end RAG.

Cyber & IRAP

NIL-cost IRAP assessment proposals, proven support for companies and vendors, and IRAP consultants, assessors, and advisers ready when you need them.

Systems Integration

Connect legacy, cloud, OT and mission platforms through secure integration layers — disciplined end-to-end design for Defence, government and enterprise.

Cloud Transformation

Cloud architects and engineers across AWS, Azure, GCP, OpenShift, OpenStack, and VMware — estate mapping, OSI assessment, and the 6 Rs.

Project Recovery

Combining industry insights with deep requirements analysis to assess, plan, implement, and monitor recovery actions — restoring stakeholder confidence.

Why SolStak

Built for delivery, not deckware.

Unlike tier-one consultancies such as Accenture, PwC, and Fujitsu, we are sized for speed—able to change direction quickly and stay hands-on from design through production, without the overhead, slideware, and committee layers that slow larger firms down.

We Engineer

We don't hand over PowerPoint and walk away.

We Recover

We are frequently engaged when programmes are already in distress.

We Operate

We understand production environments, not just design activities.

We Are Sovereign

Australian-owned, security-conscious, delivery-focused.

We Move Fast

SME agility without enterprise compromise—faster decisions, sharper pivots, and teams that stay in the work.

Government Panels

Approved government panel arrangements.

SolStak holds listings across Defence and government ICT panels. Approved categories for each arrangement are listed below.

Department of Defence

SON3520191 Information Communication Technology Provider Arrangement (ICTPA)

Application Services
Systems Integration Services
Strategy and Architecture
Change and Transformation
Development and Implementation
Delivery and Operations
Skills and Quality

Department of Defence

Bench Strength Panel — Defence Digital Group (DDG)

Engineering & Architecture Services ATL

BuyICT

Digital Transformation Agency Digital Marketplace 2 (DMP2)

Digital Marketplace 2 (DMP2) Professional and Consulting Services

About SolStak

ICT architecture, engineering & cyber — delivered with purpose.

SolStak is an Australian-owned ICT consultancy working in architecture, engineering, networks, cyber security, and assessments. We started as a project recovery practice — the team brought in when programmes were already in trouble — and grew into a sovereign consultancy that’s trusted when things are in distress and equally valued for greenfield design, build, and assurance across Defence, government, and enterprise.

The way we work is the point. Our people move fast, communicate plainly, and change direction when the mission demands it — without losing control of scope, security, or quality. Many of our leads bring 20+ years from the enterprise sector, and all of them share a bias for delivery over slideware. We stay hands-on from design through to production. We don’t hand over a deck and walk away.

As a Defence Industry Security Program (DISP) member, we support our people and sub-contractors through the clearances they need, and we work alongside Defence, DST, and leading consultancies across Australia.

Work With Us

Want a straight technical view before you commit to anything? We’ll give you frank advice, no obligation.

Collaborations