Senior Developer

Senior Software Developer – Data & AI

NZ-based agri-fintech platform • September 2025 – Present

• Works across data, AI/ML, and platform layers to make prompt-driven AI systems reliable, observable, and cost-efficient
• Built internal AI developer tooling enabling data scientists to rapidly test and iterate on prompts via Python notebook-based workflows
• Designed and deployed scale-to-zero infrastructure on Google Vertex AI, cutting model hosting costs by thousands of dollars per month
• Integrated Langfuse into the LLM execution layer, providing real-time visibility into prompt performance, failures, and production usage

Senior Backend Engineer

NZ-based investment management scaleup • July 2023 – August 2025

• Integrated and unified user authentication across two distinct backend systems using Auth0, AWS Step Functions, and Lambdas, achieving zero downtime for tens of thousands of monthly active users
• Developed API integrations with Salesforce and multiple third-party services using AWS Lambdas and Step Functions, processing over 70 million API calls per month
• Built a Step Function to re-drive failed and cancelled executions, reducing manual intervention and leveraging DynamoDB for state management
• Employed AWS CDK to deploy and manage multiple stacks, DynamoDB tables, API Gateways, and Lambdas
• Implemented an EventBridge event bus integrated with Salesforce, enabling automatic event processing via Step Functions
• Wrote comprehensive tests using Vitest and MSW to validate API interactions

Lead Engineer

NZ-based cryptocurrency platform • December 2021 – July 2023

• Led full platform development including third-party integrations for buying/selling crypto and fiat currency, rate capture, and financial system data writes for cost basis calculation
• Architected a state machine to transition transactions through type-specific flows, with states processed via message queue
• Built frontend components in React and Next.js including buying/selling UI, withdrawals, and deposits
• Managed several contract developers and collaborated closely with product to deliver features
• Wrote comprehensive test coverage using PHPUnit (unit and feature tests)

Senior Engineer

NZ-based buy-now-pay-later fintech • March 2021 – November 2021

• Optimised database queries, reducing database load by 50% and resolving all related alerts
• Implemented a new payment gateway integration via REST API, with full PHPUnit test coverage
• Implemented the latest Shopify Payments API using OAuth and GraphQL to replace a deprecated version

Senior Full Stack Engineer

NZ-based e-commerce technology consultancy • September 2019 – February 2021

• Built IoT message processing systems to track keg locations and dwell times using React/TypeScript frontends and custom APIs
• Developed a post-sale order profitability reporting system with stock management API integration
• Built a referral system including referral code generation, store credit allocation, and customer notifications
• Developed configurable upsell product systems built with React

Fullstack Tech Lead

NZ-based agri-fintech platform • May 2017 – August 2019

• Led a team of three developers building a financial scenarios tool for tracking assets, liabilities, income, and expenses
• Led development response to multiple critical data issues
• Built a Terms and Conditions module with full admin customisation
• Developed a large-scale data copy tool using message queues with real-time progress feedback via WebSockets

Fullstack Tech Lead | Senior Full Stack Engineer

NZ-based e-commerce platform • August 2012 – February 2017

• Built registration, account management, and subscription selling systems including order capture and processing
• Developed site search and browse functionality including Solr document indexing
• Oversaw development of new sites launched from the same platform
• Built a helpdesk system integrating Gmail/IMAP for in-platform email replies
• Integrated POS system via Vend API and developed profitability reporting per cart and period

Lead Engineer

NZ-based group buying e-commerce platform • June 2010 – December 2010

• Built customer email system using Symfony, developed My Account section, and added multi-tenancy support for Australian launch

Engineer

NZ-based online marketplace • January 2009 – June 2010

• Developed seller-facing API, performed SQL and memcache performance optimisations for a high-traffic televised event, and integrated a vehicle fuel data API

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