About Us Longbridge is a leading next-generation social brokerage service provider, dedicated to redefining the global trading experience through cutting-edge technology. We bridge the gap between social networking and financial services, providing users with a seamless, high-speed, and secure platform to engage with global markets. At Longbridge, we don’t just follow industry standards—we set them. Our engineering culture thrives on innovation, technical excellence, and the use of modern systems programming languages to solve complex financial challenges at scale. Join us as we build the future of fintech. The Role As a Senior Backend Developer, you will be at the heart of our trading ecosystem. You won’t just be writing code; you will be architecting the high-performance foundations that power real-time securities trading. You will tackle challenges related to massive concurrency, ultra-low latency, and distributed systems reliability. Key Responsibilities: • Architect & Build: Design, implement and maintain the core infrastructure platform that supports our US securities trading system. • Collaborate: Partner with cross-functional business and product teams to translate complex trading functionalities and business requirements into scalable technical solutions. • Optimize for Performance: Continuously refine code and system architecture to achieve micro-millisecond latency and high throughput, ensuring our traders have a competitive edge. • Ensure Resilience: Maintain and improve system stability and high availability, implementing robust monitoring and failover strategies. • Modernize: Contribute to the evolution of our tech stack, advocating for best practices in systems programming and infrastructure-as-code. What You’ll Bring • Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a related technical field. • At least 5 years experience in backend development. • CS Mastery: A rock-solid understanding of computer science fundamentals, including complex data structures, algorithms, operating systems and networking. • Systems Expertise: Proven professional experience with Rust. We are also open to experts in Go or C++ who are eager to master Rust in a production environment. • Operational Mindset: Experience with Linux internals, performance profiling, and debugging complex distributed systems. • Soft Skills: An innovative mindset with a "built-to-last" philosophy. You are a fast learner who stays ahead of the curve in a rapidly changing tech landscape. Bonus Points • Deep experience with Functional Programming (e.g., OCaml, Erlang, Elixir, or Haskell). • Prior experience in trading platform (FinTech or Financial Services). Job Location: the preferred job location is Dallas or New York on hybrid working mode. But we are open to candidates from other locations (remote).