Quantitative Developer (C++ / Python) vs Core Banking Systems Specialist (Temenos / Mambu): Salary & Career Benchmarks in New Zealand

In New Zealand, Quantitative Developer (C++ / Python) roles typically command a higher median salary than Core Banking Systems Specialist (Temenos / Mambu) positions. According to our 2026 live benchmark data, a mid-level Quantitative Developer (C++ / Python) earns a median salary of NZ$158K, whereas a Core Banking Systems Specialist (Temenos / Mambu) brings in roughly NZ$140K (a gap of NZ$18K at the median).

Seniority, tech stack, and location all move this gap. Senior practitioners in either discipline can exceed the upper range through specialist skills. See the skills premium section below for the specific certifications and tools that push offers to the top of the range.

While both positions are vital to a modern tech organisation, Quantitative Developer (C++ / Python) and Core Banking Systems Specialist (Temenos / Mambu) have fundamentally different daily workflows.

Quantitative Developer (C++ / Python) focuses primarily on building the pricing, risk, and execution libraries that quantitative trading and risk teams rely on, bridging research code in Python with production-grade C++ systems. Day-to-day work revolves around translating research prototypes into production C++ libraries, optimising numerical code for performance, building Python bindings for quant research teams, and validating pricing models against market data.

Core Banking Systems Specialist (Temenos / Mambu) focuses on configuring, customising, and maintaining core banking platforms such as Temenos or Mambu that handle account, ledger, and product processing for banks. Their time is spent configuring product and account rules in Temenos or Mambu, managing core banking upgrades and patches, integrating the core with payment and channel systems, and supporting regulatory reporting extracts.

Transitioning between these two paths is achievable but requires targeted upskilling.

Moving from Quantitative Developer (C++ / Python) to Core Banking Systems Specialist (Temenos / Mambu):

Moving from Core Banking Systems Specialist (Temenos / Mambu) to Quantitative Developer (C++ / Python):

Neither path requires starting from scratch. Professionals in both roles share underlying technology fluency; the gap is usually domain knowledge and specific tooling rather than core engineering fundamentals.

In New Zealand in 2026, both roles are seeing demand, but with different drivers.

Quantitative Developer (C++ / Python) demand is high, particularly in Core banking and payments teams at ANZ New Zealand, ASB, Westpac NZ, and BNZ, alongside fintech scale-ups like Sharesies and Worldline New Zealand (formerly Paymark), New Zealand's dominant EFTPOS payments processor.. Core Banking Systems Specialist (Temenos / Mambu) demand is high, concentrated in Core banking and payments teams at ANZ New Zealand, ASB, Westpac NZ, and BNZ, alongside fintech scale-ups like Sharesies and Worldline New Zealand (formerly Paymark), New Zealand's dominant EFTPOS payments processor..

Workspace flexibility significantly impacts total compensation value in New Zealand.

Quantitative Developer (C++ / Python) roles score 35% on our remote-friendliness index (Moderate). This is because platform and integration work is largely tool-driven, though the big four banks generally require staff working on regulated payment rails to be based in New Zealand even when the role is remote-friendly day to day. Where in-office attendance is required, it is typically driven by regulatory and compliance touchpoints with the Reserve Bank of New Zealand's payments oversight, which ANZ, ASB, Westpac NZ, and BNZ push toward a Auckland or Wellington office presence.

Core Banking Systems Specialist (Temenos / Mambu) roles score 40% (Moderate). Platform and integration work is largely tool-driven, though the big four banks generally require staff working on regulated payment rails to be based in New Zealand even when the role is remote-friendly day to day is the primary driver of flexibility. When office days are required, it is usually for regulatory and compliance touchpoints with the Reserve Bank of New Zealand's payments oversight, which ANZ, ASB, Westpac NZ, and BNZ push toward a Auckland or Wellington office presence.