Siarhei Navadvorski

Senior Software Engineer @Canva

York, GB

Railway Demand ModellingLed the modernisation of a national-scale timetable modelling system supporting UK transport officials in optimising rail services for 380M+ annual passengers- Reduced report generation time by 83%(from 28h to 40min), enabling faster, data-driven decisions on multi-million-pound rail investments- Built a scalable analytics engine to process 50M+ row datasets using microservices and GCP infrastructure, supporting high-throughput modelling scenarios- Delivered the full project lifecycle — from stakeholder alignment to developer mentoring and system handover — ensuring long-term adoption and maintainability Train Monitoring SystemsDeveloped cloud-native systems to monitor and analyse real-time and historical train performance across 35k+ daily journeys throughout England- Enabled large-scale delay analytics and compliance reporting with tools based on five years of historical performance data- Designed resilient, event-driven infrastructure using AWS Lambda, CDK, and asynchronous queues — reducing deployment failures by ~40% and saving ~8 hours/week in manual ops- Contributed to securing four follow-on contracts through consistent delivery of client-facing features and platform reliability