Senior Back-end Developer

Who We Are | Ko wai mātou
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.
About the Role | Mō tēnei tūranga mahi
We’re looking for a Senior Back-End Developer to join our Digital Practice. In this role, you’ll design and build scalable, secure, and high-performing server-side enterprise solutions using the Microsoft stack and cloud-native technologies.
What You’ll Do | Ngā haepapa
- Design, develop, and maintain robust back-end systems and APIs using.NET Core and C#
- Build cloud-native solutions using Microsoft Azure
- Collaborate with front-end developers to ensure seamless integration and performance
- Implement secure, scalable, and maintainable architectures
- Automate builds, tests, and deployments using CI/CD pipelines
- Participate in code reviews, Agile ceremonies and contribute to continuous improvement initiatives
- Troubleshoot and resolve technical issues across environments
- Mentor junior developers and contribute to knowledge sharing within the team

What You’ll Bring | Ngā pūkenga me ngā wheako
**Must-Have**:

- Strong experience with.NET Core, C#, and relational or NoSQL databases (e.g., SQL Server, PostgreSQL, or Cosmos DB)
- Experience designing, building and consuming RESTful APIs
- Hands-on experience with Azure services (e.g., Azure App Services, API Management, Azure SQL, Cosmos DB)
- Understanding of software architecture, design patterns, and security best practices
- Experience working in Agile environments (Scrum/Kanban)
- Excellent communication and collaboration skills

**Nice-to-Have**:

- Experience with message-based architectures (e.g. using Azure Service Bus, Event Grid)
- Familiarity with containerisation (e.g., Docker, Kubernetes)
- Familiarity with CI/CD pipelines and build automation tools (e.g., Azure DevOps, GitHub Actions)
- Knowledge of DevOps principles and Infrastructure as Code (e.g., Bicep, Terraform)
- Experience with automated testing.
- Exposure to AI tools (e.g., GitHub Copilot, Cursor, Windsurf, Claude Code or Roo Code) to support development
- Microsoft certifications (e.g., AZ-204, AZ-400)

About us | Mō mātou
Our team of 280+ experts span software development, data and insights, cloud transformation, integration, cyber security, and more. We’re proud to be a Microsoft and AWS partner, and we’re deeply committed to inclusivity, sustainability, and Te Ao Māori.
**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 of 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
Theta offers a family friendly work environment with flexible work hours where practical; especially relevant for caregivers.
We embrace gender equality and are committed to providing a supportive, diverse and inclusive work environment throughout our workplace.
Theta is committed to giving back to the community and are avid supporters of Cure Kids. We compete in various adventure races and do many other things to raise money for Cure Kids. And we make time for the fun things in life
We currently provide the following benefits to ensure your professional development and personal wellbeing:

- Professional growth and learning opportunities
- A 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
- We are also an accredited employer with INZ

**Please note**: Potential employees will be required to consent to a Ministry of Justice check (and potentially a credit check)
Ready to take your career to the next level? We would love to hear from you