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// DELTA TANGO TECH ADVISORY

Own the systems
your organisation runs on.
Stop renting them by the seat.

We design and build custom business systems for organisations that have outgrown a patchwork of SaaS subscriptions. You get one system that fits how you work, private AI that runs on your own hardware, and data that stays in your custody.

SEE WHAT WE DO COMPARE THE RISKS

Running dozens of platforms across a large organisation? See how an enterprise programme runs

01 // DATA CUSTODY
100% Yours
Your data stays on dedicated hardware that you control.
02 // ATTACK SURFACE
Zero Open Ports
Systems connect out through encrypted tunnels, so nothing is exposed to the public internet.
03 // RESPONSE TIME
< 20ms Response
Processing runs on edge servers located close to your users.
04 // LICENSING
No Seat Fees
You own the core system, so there are no per-user licence fees.
// SYSTEM STATUS
[BOOT] Running system check...
[OK] Encrypted outbound tunnel connected. Open inbound ports: 0.
[OK] Edge servers online.
[AUDIT] Shared SaaS platforms: not used. Client data stays in client custody.
"Off-the-shelf SaaS is priced to grow the vendor's recurring revenue, not to fit the way your organisation works. We build custom systems that bring your data together, automate routine work, and run private AI on infrastructure you control."
[TELEMETRY] Satellite communications link: normal.
[STATUS] Private AI models running on-premise. No data sent externally.
// WHY OWN YOUR SYSTEMS

Where subscription software falls short.

Off-the-shelf subscription software is quick to start with, but the costs and risks build up over time. Fees rise with headcount, your data sits on someone else's infrastructure, and the vendor decides what changes and when.

COMMERCIAL SAAS
Per-seat fees that keep growing
Every new hire adds to the licence bill. Prices tend to rise each year, while the features you rely on change on the vendor's schedule, not yours.
Less control over data in AI tools
Prompts and confidential queries may be processed by AI models shared with other customers, which can put commercial confidentiality and government data residency obligations at risk.
Dependence on the vendor's uptime
Cloud outages, discontinued integrations, and slipping vendor roadmaps can stop critical work, and you have little say in the fix.
A DELTA TANGO CUSTOM BUILD
No per-seat licensing
We build lean systems that you own, hosted on infrastructure you control. Your team can grow without the licence bill growing with it.
AI that runs on your premises
Language models run on dedicated hardware inside your environment. Prompts, queries, and intellectual property stay within your boundaries.
Designed to keep running in an outage
Systems run on local and edge servers with a local fallback, so essential functions can keep working when public networks or cloud providers go down.
// RISK COMPARISON

Compare how each approach handles three common risks

Pick a scenario to see how a typical SaaS stack and a Delta Tango build would each respond.

Typical SaaS stack HIGH RISK

Many SaaS vendors process customer prompts and usage data on shared cloud infrastructure. Depending on the contract, that data can end up training third-party AI models.

Control of your data25%
Resilience to disruption35%
Delta Tango custom build 100% ON-PREMISE

We run private language models on dedicated hardware at your site, with no open inbound ports. Prompts and usage data stay inside your network.

Control of your data100%
Resilience to disruption95%
// FIVE-YEAR COST COMPARISON

What is your SaaS stack really costing you?

Tick the systems your organisation pays for today and set your number of users. The calculator puts your five-year subscription cost next to the cost of one custom system, built for your operations and owned by you.

Step 01 // Choose your current systems

Step 02 // Number of users

50 licensed users
COMMERCIAL SAAS STACK
$0 Annual SaaS Spend
$0 5-Year Cost
0 Separate Vendor Systems
Costs usually rise each year through vendor price increases, extra seats, and paid add-ons. Your data stays split across separate systems that do not share information easily.
ONE CUSTOM SYSTEM
$0 One-Off Build Cost
$0 5-Year Total (Build + Maintenance)
$0 5-Year Saving vs SaaS
Break-even: ~33 months
One shared source of data in place of separate vendor databases
Workflows built around how your team works, rather than a vendor's generic template
Private AI assistants that help staff across the whole system, not inside one product
Your data in your custody: no vendor usage tracking, no lock-in, no open inbound ports
// SECURITY BY DESIGN

Built by people with national security experience.

Delta Tango Advisory was founded by people with backgrounds in national security and government systems advisory. We design security into a system from the first day, rather than adding it at the end.

Most commercial software vendors prioritise speed to market over security. On multi-tenant platforms, thousands of organisations share the same servers, storage, and increasingly the same AI models. A weakness in one customer's account can expose others on the same platform.

We bring the security discipline from our government and critical infrastructure work to every system we build. That means zero-trust access, where every user and device is checked on every request; isolated data stores; encrypted tunnels with no open inbound ports; and private AI models that keep data inside your environment.

National security background Founded by advisers with direct experience on national communications and critical infrastructure programmes.
No open inbound ports Our systems connect out through encrypted tunnels only. There are no open ports or public endpoints for attackers to target.
Data kept where you decide Client data stays within boundaries you control. No shared tenancy, no offshore copies, no vendor usage tracking.
// Common SaaS risks Industry Overview
AI training on customer data: Some large SaaS providers have confirmed using customer prompts and usage data to train shared models, in some cases without explicit consent.
Shared platform breaches: In shared cloud environments, attackers have used a single compromised account to reach data belonging to thousands of organisations.
Supply chain attacks: Compromised third-party components inside SaaS platforms have let attackers run code in customer environments at scale.
Data residency breaches: Organisations using offshore SaaS have found their data copied to other countries, in breach of Australian data sovereignty requirements.
// Our approach

Every system we build uses dedicated hardware, isolated data stores, and private AI. Your data is not held in a shared environment, your prompts do not train anyone else's model, and your systems have no publicly reachable endpoints.

// CAPABILITIES

Specialist work on complex, critical systems.

We work with organisations that want control of their own technology. Our work covers satellite and telecommunications engineering, high-assurance cyber security, and custom business systems with private AI.

CAPABILITY 01 // TELECOMS & AEROSPACE

Satellite & Space Systems Engineering

Technical advice on satellite payloads, ground network integration, and multi-band telecommunications design. We work with tier-1 prime contractors on major national communications programmes, providing systems analysis and breaking high-level requirements down into testable specifications.

Core Domain: Satellite Telemetry & Comms
Governance: Tier 1 Prime Contractor Standards
Verification: Requirements Traceability
CAPABILITY 02 // CYBER SECURITY

Security Architecture & Assurance

Security assurance, zero-trust architecture, and alignment with regulatory frameworks. We provide vCISO advice (a part-time chief information security officer), cloud security automation, and ongoing security checks for organisations where privacy and compliance matter most.

Standard: High-Assurance Frameworks
Architecture: Zero-Trust Cloud Access
Execution: Automated Security Checks
CAPABILITY 03 // CUSTOM SYSTEMS & AI

Custom Systems & Private AI

We design and build custom systems that run on edge networks and dedicated on-premise hardware. Private AI models run locally, so you avoid public AI subscriptions, keep data in-house, and get responses in milliseconds.

Explore our AI Advisory practice, from team models to bespoke enterprise builds →

Compute Mode: On-Premise & Global Edge
Inference: Private, Isolated Language Models
Inbound Ports: None Open
// OUR PRACTICE

Senior people on every engagement.

Our technical practice is led by experienced enterprise architects, principal systems engineers, and specialist practitioners. They design and build systems for technology companies, tier-1 telecommunications providers, and large digital organisations.

PROGRAMME DIRECTORS // SPACE & SATCOM

Space & Satellite Systems Advisory

Leading system-of-systems engineering, technical risk management, requirements traceability, and operational validation on major national satellite communications programmes.

0 Active Engagements
TIER 1 Prime Contractor Work
0% Audits Passed to Date
Capability: Systems Governance for Tier 1 Primes & Satcom Architecture
TECHNICAL DIRECTORS // CYBER & INFRASTRUCTURE

High-Assurance Cyber Security Architecture

Leading zero-trust implementations, data isolation design, and automated compliance auditing for organisations in tightly regulated environments.

ZERO Breaches to Date
vCISO Service Model
24/7 Monitoring
Capability: Security Architecture & vCISO Services
ENTERPRISE ARCHITECTS // DIGITAL TRANSFORMATION

Operating Models & Capability Uplift

Designing modern cloud-native systems to replace fragile legacy vendor stacks, and building lasting technical capability inside client engineering teams.

0% Avg SaaS Cost Reduction
SOVEREIGN Data Residency
0% Platform Uptime
Capability: Edge Systems & Skills Transfer to Client Teams
0 Custom Systems Delivered
0 Senior Engineering Engagements Completed
0% Client Retention Rate
ZERO Security Incidents to Date
// CAREERS

Want to build systems, not manage tickets?

We are hiring software engineers, systems analysts, and technical researchers who would rather build real capability than chase vendor support tickets. Choose your area of focus below to see matching roles on our careers site.

Step 01 // Choose your focus

// YOUR FOCUS MATCH SCORE: 98%

Focus area: Edge Systems & Private AI Engineering

This focus covers infrastructure development, secure cloud tunnels, and private AI models running on local hardware: the same kind of work Waverley Prather does.

Next step: our careers site, filtered to your focus area. You will not need to fill in a separate form here.

VIEW OPEN ROLES
// OUR PEOPLE

Senior mentors, real responsibility, faster growth.

Engineers develop fastest when they work directly with senior leaders and carry real responsibility on client programmes. At Delta Tango, early-career engineers do not spend their days on ticket queues or internal slide decks. From their first week, they work alongside practice directors, building production systems for clients.

Waverley Prather, Software Engineer TALENT SPOTLIGHT // EDGE & AI

Waverley Prather

Software Engineer, Sovereign Edge Infrastructure

Waverley works within our senior infrastructure practice, with hands-on architectural responsibility for production edge networks and dedicated on-premise compute clusters. Alongside senior directors and enterprise architects, she designs zero-trust security systems and private AI pipelines for enterprise clients.

Zero-Trust Tunnels Edge Compute Private AI Models Serverless Services CI/CD Pipelines
Client Capability Delivered: Built encrypted zero-trust tunnels linking cloud services to on-premise compute clusters, with no inbound ports open; set up serverless database connections at the edge; and ran private AI models supporting client digital assurance work.
“At Delta Tango, you are not kept on the sidelines. Senior architects mentor you closely, trust you with real architectural work on client-facing production systems, and value your opinion.”
Simon Bolger, Systems Analyst TALENT SPOTLIGHT // SYSTEMS ENGINEERING

Simon Bolger

Systems Analyst, Strategic Advisory Practice

Simon works where complex systems engineering meets executive advice, alongside senior programme directors and enterprise architects on major national telecommunications engagements. He is responsible for breaking down requirements, structured risk analysis, and technical audit on tier-1 client engagements.

Systems Engineering Risk Frameworks Requirements Traceability Technical Audit Satcom Architecture
Client Capability Delivered: Broke down multi-layered telecommunications engineering specifications for tier-1 satellite primes; wrote structured risk registers and operational audits that validated data pathways in high-trust environments.
“Working alongside senior directors on nationally significant programmes gave me more systems engineering experience in months than I would have gained in years at a conventional organisation.”
Waverley and Simon are two members of our team. Our wider technical practice includes programme directors, principal engineers, and senior systems architects working across several client engagements at once. Meet the full team →
// HOW WE WORK

From one system to an enterprise estate, delivered in stages.

Whether you are replacing three subscriptions or modernising the platforms a large organisation runs on, the work follows the same pattern. Each stage delivers something useful on its own and ends with a decision point, so you only commit to the next step when you are ready.

  1. STAGE 01 · 2 TO 4 WEEKS Discovery and business case We map your current systems, costs, data flows, and risks, then recommend what to keep, replace, or build, with a costed plan.
  2. STAGE 02 · 6 TO 12 WEEKS Design and first build A working first system or module on your infrastructure, built with your people and tested against agreed outcomes.
  3. STAGE 03 · ONGOING Migration, rollout, and support Data migration, staff onboarding, security hardening, and a support arrangement that suits how you operate.
  4. STAGE 04 · 6 TO 18 MONTHS Enterprise programme For large organisations: a portfolio roadmap, integration with core platforms, multi-site resilience, and governance reporting to your executive and board.
Start with a confidential conversation. Tell us what you are working on and we will come back with a view on where to start. If private AI is part of the picture, our AI Advisory practice joins the conversation.
AI Advisory Request a briefing
// TALK TO US

Tell us what you are working on.

Whether you want to replace a stack of SaaS subscriptions with one custom system, modernise systems across a large organisation, run AI privately on your own hardware, or get specialist help with a space communications programme, we would be glad to talk.

How we work

We work with executives, prime contractors, and government stakeholders who need clear technical advice. Every engagement is handled with discretion, and our findings are backed by evidence you can check.

Direct access to senior people Senior practice leaders run every engagement, supported by specialist engineers.
Clear rates and scopes Predictable pricing and clearly defined scopes, set to the standards tier-1 primes expect.
Documentation ready for audit Every deliverable is written to stand up to board, regulatory, and technical review.
A clear next step After a first conversation you receive a short written summary and a proposed scope for discovery.