Define and evolve application architecture across a mixed .NET estate (Framework 4.x → modern .NET up to .NET 10), setting the modernisation roadmap and ensuring new work follows clean, sustainable patterns while legacy components are uplifted incrementally.
Lead frontend-focused architecture for Angular-based SPAs — defining and governing the API interaction model, ensuring frontend squads have well-designed, stable, and versioned contracts to build against.
Design and govern API contracts for internal first-party APIs and integrations with third-party services operating within the customer's environment.
Create and maintain a pragmatic technical debt remediation roadmap — identifying what to address, in what order, and how to do it without stalling live delivery.
Define and enforce engineering standards: DDD, clean architecture, automated testing, CI/CD, and code review practices.
Facilitate architecture workshops with engineering squads, product owners, and customer stakeholders; provide technical governance through sprint reviews and release gates.
Mentor senior engineers and junior architects — through pairing, design reviews, code feedback, and knowledge sharing. Build capability, not dependency.
Be the technical voice in customer-facing conversations — able to explain design decisions clearly to non-technical management and defend them with confidence.

Deep, hands-on experience with .NET Framework (4.x) and modern .NET (6 through 10) — and a track record of managing the gap between them in a live production environment.
Strong grasp of application modernisation patterns: strangler fig, anti-corruption layers, incremental migration — and knowing which to apply when.
Good knowledge of modern SPA frameworks (Angular preferred) — the confirmed frontend framework in this environment.
Sufficient depth to review component architecture, understand data-binding patterns, and collaborate meaningfully with frontend squads.
Strong API design and enterprise integration experience — REST, messaging patterns, and third-party API governance.
Experience designing and governing frontend-facing application architectures, including SPA/API interaction models and API contract management.
Azure-hosted application experience: App Services, Azure Functions, API Management, Azure SQL, Service Bus, and related PaaS tooling.
Solid grounding in web application security: authentication, authorisation, secrets management, and secure API design.
Proven ability to manage and incrementally reduce technical debt as part of an active delivery programme — not as a separate workstream.
Outstanding mentoring ability — a natural instinct to build up the people around you, not just solve problems yourself.
Strong client-facing communication — able to simplify technical complexity for non-technical executives and earn confidence through clarity.

Professional growth and learning opportunities.
Competitive salary (commensurate with experience).
Fully subsidised medical insurance for employees.
Heavily discounted medical insurance for immediate family of employees.
Enhanced parental leave payment – salary top-ups plus return-to-work incentive.
Hybrid working model (minimum 2 days in the office).
Volunteer days.
Internal Referral Incentive.
Staff Assistance Programme.
Annual Flu injections.
Sick leave from your first day on board.
Remote working options where practical and mutually agreed.
Daily fresh fruit basket, coffee machine, wide selection of teas and biscuits in all of our offices.

Only accepting applications from those already residing in Auckland with the relevant visas.
All potential employees will be required to consent to a Ministry of Justice criminal record check.

Theta is hiring an Application Architect (.NET & Azure)

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