Principal .NET Developer

Overview This range is provided by MRJ Recruitment. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.Direct message the job poster from MRJ RecruitmentPrincipal Back-End Developer – Lead, Build & Shape a High-Growth SaaS PlatformUp to £80,000 | C#, .NET, Azure, TDD | Manchester HQBonus scheme | Learning & development budget | Tech-focused cultureWe\’re working with a fast-growing, award-winning SaaS company that\’s creating products loved by businesses across the UK. As the business scales, they\’re seeking a Principal Back-End Developer to play a key role in shaping both the technology and the engineering culture.Here, technology isn\’t just a support function, it\’s the product itself . You\’ll be part of a collaborative, cross-functional team that thrives on brainstorming, hands-on coding, bold ideas, and continuous improvement.If you enjoy leading by example, designing architectures, mentoring colleagues, and staying close to the code , this could be the role you\’ve been looking for.What You\’ll Be Doing:Define and drive the technical direction across multiple productsBuild scalable, high-performance applications using .NET Core, Azure, and modern engineering practicesMentor engineers and elevate team capabilities through guidance and supportWork closely with Product, QA, Design, and Delivery teams — your input will influence key decisionsPromote high-quality software through TDD, CI/CD, and a culture of continuous improvementWhat You\’ll Bring:Proven expertise in C#, .NET Core, and cloud platforms such as AzureStrong understanding of TDD, CI/CD, and building scalable systemsStrategic thinking with the ability to make informed, practical technical decisionsExcellent interpersonal skills — whether mentoring, pair programming, or leading discussionsWhy This Role?Take ownership of a growing engineering team and influence the company\’s future directionWork in a collaborative environment where the best ideas come from team discussionJoin a tech-first company where engineering drives the business forwardThrive in a culture that encourages learning and supports experimentationBe part of a people-focused organisation with a 4.8 Trustpilot rating and a genuinely enjoyable cultureThis is your chance to lead from the front, stay hands-on with code, and shape the future of a high-growth SaaS business.Ready to make an impact? Apply today or get in touch to find out more.Seniority level Mid-Senior levelEmployment type Full-timeJob function Engineering and Information TechnologyIndustries IT System Custom Software Development

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