STX Group, Amsterdam
- Senior Software Engineer2024 - present
- Software Engineer2019 - 2024
Key techTypeScript · React · Vue.js · Node.js · OpenSearch · Postgres · AWS CDK · Kafka
Technical leadership
Joined when engineering was around 3 people and stayed through growth to 80+. Built STX's first frontend team, hiring and onboarding four engineers.
Introduced Vue.js and drove TypeScript adoption alongside other engineers, replacing fragmented, hard-to-maintain vanilla JavaScript with reusable components. Mentored engineers and participated in technical interviews across the wider engineering organisation.
Bid & Offer
Co-architected the application and remain a core technical owner. Rebuilt a tool traders were bypassing into a product they use daily, handling hundreds of daily entries across three continents.
Reworked query paths, pagination and rendering to eliminate browser crashes on grids with 20k+ records and reduce loading from roughly minutes to seconds. Improved adoption restored collection of the bid/offer and spread data analysts had been missing.
Sales Margin
Own the service company-wide, from discovery through implementation, rollout, training and production support. Replaced fragmented spreadsheet and file-based calculators with structured multi-leg pricing and P&L capture, giving trading, sales and management a unified view.
Own the APIs, event handlers and snapshot correctness when trade data changes after capture. In the first four months after launch, 4,100+ unique trades were priced across four legal entities and 13 currencies.
Counterparty KYB
Lead architecture and cross-team implementation across HubSpot, internal pre-trade services, Trulioo, webhooks and core counterparty and approval systems. Stay hands-on while guiding junior and mid-level engineers.
The integrated workflow is still in development, addressing manual data transfer, fragmented approvals and poor onboarding-status visibility. Business target: 50% less processing time, with a projected 2,500 company onboardings annually.
Platform modernisation
Built the pricing, proxy product and reference-data frontends from scratch as part of the monolith-to-microservices migration. Contributed to architecture decisions across the new applications.