Job Description Senior Backend Developer UK Remote (going to the London Office 1 x per month) £90,000 - £120,000 Equity, Remote Working, Flexible Hours, Progression & Autonomy Exciting opportunity for a Senior Backend developer to join an exciting Y Combinator startup. This exciting startup combine VoIP technology and AI to create a secure and collaborative communication system for SMEs. It’s a great time to join as they are offering equity and are growing exponentially (by 10-30% each month). In this role you will be working on the architecture design for new features as well as working on their existing analytics portal and softphone products. You will participate in architectural design for DevOps and AI integration. The perfect candidate will have experience with .Net, C# and Azure. You will have experience designing and working on large systems with high uptime requirements. You will a self starter who understands that in a startup environment you will work collaboratively. If you are a Senior FullStack Developer looking to progress their career in a role offering autonomy and flexibility, please do reach out. Role Overview: Remote working - going to the London Office 1 x per month Must have experience with C#, .Net & Azure Joining the CTO, two Senior BackEnd Developers, a junior front-end developer & a mobile app developer Opportunities exist to work on innovative projects involving NLP and VoIP Familiarity with React, Kotlin, or Swift is advantageous Their stack: Front End React, Next, Node (or similar JS framework), BackEnd .Net6/7/8 & C# 4 Stages of Interview all held remotely – 1 st stage is a technical test mustard is a creative recruitment consultancy and is committed to fostering an inclusive and diverse workplace. We encourage individuals of all backgrounds, experiences, and perspectives to apply. Our recruitment process is free from discrimination and bias and we welcome the opportunity to work with you. If you require any accommodations during the application process, please let us know. We appreciate the unique skills and experiences each candidate brings, and we are dedicated to creating an environment where everyone feels valued and respected.