Title: Senior Software Engineer (TypeScript andamp; Ruby) Rate: Up to £450 Per Day Outside IR35 (3 months) Remote!Are you an experienced Senior TypeScript Engineer looking for your next contract opportunity? if so iO Associates are exclusively working with mission-driven technology company that''s transforming how people experience financial recovery. Our client is on a journey to change the debt resolution space with a radically empathetic, AI-powered platform that puts people first, helping individuals regain control of their financial health while enabling businesses to recover debt with integrity and insight.Following strong growth and recent acquisition by Europe''s largest credit management service, they''re expanding into 17 European markets. To support this exciting growth phase, our client is looking for a Senior Software Engineer to join their team! The Opportunity:You''ll join a product-focused team working across the full stack - primarily with TypeScript, Ruby, and AWS - to build and scale systems that underpin our international growth. From API design to infrastructure, you''ll own meaningful projects and contribute to a platform that impacts millions.This is a high-impact individual contributor role with opportunities to lead technically, mentor others, and shape engineering best practices as we scale.Their Tech Stack:Backend: TypeScript (Node.js), Ruby on RailsFrontend: TypeScript, React, Hotwire (Turbo/Stimulus)Infrastructure: AWS (Lambda, Fargate, Aurora, C