Senior Software Engineer - Javascript / Typescript with (C++ / Java / C#) London

Senior Software Engineer - Javascript / Typescript with (C++ / Java / C#) London Location: London (Hybrid - WFH 2 days) Salary: £150,000 - £200,000 (Permanent) Contract Rates: £700 - £900/day (Outside IR35) Are you ready to be part of a groundbreaking journey in developer tools? Join a pioneering company transforming how global enterprises leverage data through state-of-the-art JavaScript data grids. In just nine years, their community-driven product has skyrocketed to over 1 million weekly downloads , with the Enterprise version trusted by 10,000+ companies , including nearly all Fortune 500 giants and major financial institutions. Why This Role? Lead Innovation : Become a core member of an elite team, driving the future of industry-leading products. Shape the Future : Contribute to the evolution of their Data Visualisation or DataGrid libraries, the backbone of their flagship products. Ownership and Impact : Take complete ownership of features, from ideation to execution, ensuring your work makes a global impact. Global Reach : Your contributions will shape products used by millions worldwide. What They’re Looking For: Expertise in JavaScript & TypeScript and proficiency in other programming languages (C++, C#, Java, or Python). Deep experience with JavaScript frameworks like React, Angular, or Vue and a strong understanding of software design principles. Strong command of design patterns and algorithms . Passion for clean, maintainable code and a commitment to open-source principles. What They Offer: Developer-Centric Environment : Work in a space crafted by engineers for engineers, where your voice and ideas matter. Career Growth : Be part of projects that make a difference on a massive scale. Competitive Compensation : Receive a salary and benefits package that truly reflects your expertise. Flat Hierarchy : Enjoy a work culture where your contributions directly influence the company’s direction. If you’re a top-tier software engineer passionate about pushing the boundaries of technology, I want to hear from you! Apply now to be part of this exciting journey.