Microsoft Teams App Developer / Microsoft 365 Solutions DeveloperOutside IR35 Contract Hybrid - High WycombeContract: Outside IR35Location: Hybrid (High Wycombe - on-site as required)Start: ASAPDuration: Initial contract with extension potentialThe OpportunityWe are looking for an experienced Microsoft Teams App Developer to deliver a custom real-time meeting, microphone, and voting system built directly into Microsoft Teams.This project replaces traditional dedicated conference and voting hardware with a modern, software-based solution. You''ll be building both the delegate-facing Teams app used in live meetings and the administrative control systems used to manage speakers, microphones, and voting in real time.This is a specialist contract role requiring deep Microsoft Teams platform experience, real-time systems knowledge, and strong enterprise UX instincts.What You''ll Be Working OnDelegate-Facing Teams ApplicationDesign and build a custom Microsoft Teams meeting app / tabDevelop a clear, intuitive UI for live meetings, including:Microphone request and speaker queue indicatorsLive "Mic On / Mic Off" statusDynamic voting interfaces (2-5 buttons depending on vote type)Deliver real-time visual feedback:Vote open / closed statesConfirmation of submitted votesSecret vs non-secret voting behaviourEnsure the app is reliable, accessible, and easy to use in high-pressure live meeting environmentsAdministrative Control and Backend SystemsBuild backend services allowing administrato