We are Theta, a New Zealand-owned technology consultancy helping organisations transform through technology. With offices in Auckland, Wellington, Christchurch, and Tauranga, we work with leading organisations across Aotearoa to deliver smart, pragmatic, and impactful digital solutions.

Lead the modernisation of a mission-critical platform for a major global customer

Take the next step in your career with a bold move to a highly regarded, New Zealand-owned technology company. We offer a creative and stimulating work environment and value and respect inclusivity and diversity. 

About this role | Mō tēnei tūranga mahi 

Role Overview 

Demand for our services has grown steadily, and we're expanding our team. 

We’re looking for a senior Technical Lead (Architecture Focus) – Full Stack to join a customer-facing delivery team supporting a major global customer in Auckland. This is a hands-on software architecture and leadership role focused on modernising a mixed .NET/Angular estate, shaping architecture patterns for Azure-hosted applications, and lifting engineering standards across the team.

You’ll work closely with engineers, solution architects, product stakeholders, and customer leadership to define a pragmatic path from legacy to modern. While a significant part of the role involves application architecture and technical direction, this is fundamentally a full-stack leadership role where you will work side-by-side with engineers and stay close to delivery.

Key Responsibilities

• Define and evolve application architecture across a mixed .NET estate, from legacy .NET Framework 4 through to modern .NET)
• Set the modernisation roadmap, ensuring new work follows clean, sustainable patterns while legacy components are uplifted incrementally. 
• Lead full-stack technical direction across backend, frontend and integration boundaries. 
• Shape SPA/API integration patterns, ensuring frontend squads have well-designed, stable and versioned contracts to build against.
• Facilitate workshops with engineering squads, product owners, and customer stakeholders, and provide technical guidance through sprint reviews and release gates. 
• Be the technical voice in customer-facing conversations — able to explain design decisions clearly and confidently to non-technical stakeholders. 

In your first 6-12 months, you will:

• Help define a pragmatic modernisation roadmap across the .NET estate
• Improve adherence to software development best practices, including API consistency, versioning, and integration governance
• Lift engineering standards across architecture, development, and CI/CD practices
• Help reduce priority technical debt without slowing delivery
• Become a trusted technical adviser to both the team and the customer

Skills and Experience | Ngā pūkenga me ngā wheako 

Must-have: 

• Deep, hands-on experience with modern .NET and legacy .NET Framework in a commercial environment 
• Strong full-stack experience (Angular emphasis), with the ability to work effectively across backend, frontend and integration concerns.
• Good knowledge of a mainstream SPA framework (preferably Angular). You do not need to be a frontend specialist but must be able to work effectively with Angular squads, review component architecture, understand data-binding patterns, and shape robust SPA/API integration patterns.
• Proven technical leadership across engineering teams, including mentoring, decision-making and setting delivery standards.
• Azure-based experience, including App Services, Azure Functions, API Management, Azure SQL, Service Bus, and related PaaS tooling. 
• Solid grounding in web application security and secure API design. 
• Strong client-facing communication skills and ability to communicate with executives and other non-technical stakeholders. 

Good to have, but not required: 

• Knowledge of Zero-Trust security, DevSecOps and FinOps. 
• Microsoft Certified: Azure Developer Associate or Azure Solutions Architect. 
• iSAQB Certified Professional for Software Architecture 

About us | Mō mātou 

We have over 30 years of experience as a New Zealand-owned technology consultancy. We take pride in our multicultural and diverse team of circa 280 skilled professionals, with offices in Auckland, Tauranga, Wellington, and Christchurch.

Working with clients across both the public and private sectors, we strive to deliver innovative solutions and enable smarter outcomes. Our company attracts some of the brightest minds in the industry, and we foster a culture of excellence, continuous learning, and pragmatic delivery. 

Our values are: 

• Our people are our greatest asset. 
• We conduct business ethically. 
• Invention, imagination and creativity are the foundation for growth. 
• We work with positive energy, enjoyment, humour and work/life balance. 
• Excellence is our passion, and we deliver what we promise – or more! 
• We strive to take a pragmatic approach to all our activities. 
• We value and appreciate our natural environment and seek to play our part to maintain it. 

Benefits of working at Theta | Ngā hua ka puta i te mahi ki Theta 

• Professional growth and learning opportunities 
• A competitive salary (commensurate with experience) 
• Hybrid working model (from a minimum of 2 days in the office)
• 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 
• 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. 

Please note:

We are only accepting applications from those already residing in Auckland with relevant visas.

All potential employees will be required to consent to a Ministry of Justice criminal record check. 

Apply now | Tono ināianei 

Ready to take your career to the next level? We would love to hear from you.