Senior Platform Engineer

Join to apply for the Senior Platform Engineer role at Gravity Sketch. About Us At Gravity Sketch, we are transforming how creative teams realize their vision. Our platform empowers entire teams to create, communicate, and collaborate spatially, breaking down the barriers of traditional workflows to make the design process more inclusive, efficient, and enjoyable. By enabling seamless, real‑time interaction in a shared 3D environment across VR, desktop, and web, we empower the world's most innovative companies to bring better products to life. Our Culture We’re a lean but ambitious team of 50+ spread across the globe. We may be geographically spread out, but we’re tied by our mission to help people bring better products to life Our focus is on output and getting the work done, not counting the hours you work. We appreciate that everyone has their own optimum setup, so provide flexibility in terms of when and where you get work done. Our Values Force Multiplier – Make everyone around you better / Raise the Bar / Deliver Results Owner mindset – Hold yourself and others accountable / Make every investment as if it were your own / Don’t let the egg drop Resourceful – Take calculated risks / Use what you/we have to deliver the most value / Stay Hungry Curiosity – Always be in learning mode / Go Deep: ask the why/why not / Explore and have fun Empathy – Put yourself in the shoes of your customer / Be genuinely caring and respectful / Act from a place of understanding/longing to understand About the Role As a Senior Platform Engineer, you will be a core contributor to the engine that powers our real‑time, multi‑user collaboration. You'll tackle complex challenges in networking, scalability, and performance to ensure a seamless, low‑latency experience for designers working together in intricate 3D environments. Your work will directly shape a platform that makes 3D creation more accessible, intuitive, and fun. What You’ll Tackle Scale our Core Networking Engine: Go deep into our real‑time networking engine, enhancing the infrastructure to support a growing user base and increasingly complex 3D models with stability and high performance. Build Robust, Scalable Infrastructure: Design and implement cloud‑native solutions (AWS, Kubernetes, Terraform) to handle thousands of concurrent users while optimizing for low latency and high availability. Unify the Cross‑Platform Experience: Solve the complex technical hurdles of delivering seamless, real‑time collaboration across our VR, desktop, and web clients. Create a World‑Class Development Environment: Develop specialized frameworks, diagnostic tools, and automated pipelines for monitoring, testing, and analyzing our unique 3D collaborative environment. Mentor and Elevate the Team: Champion engineering best practices, mentor other engineers, and foster a culture of learning from failures to improve our products and processes. Key Responsibilities Design, build, and maintain scalable, high‑quality code for our real‑time collaboration platform. Collaborate with product managers, designers, and other engineers to define and ship new features. Diagnose and resolve complex performance bottlenecks and bugs in our distributed systems. Lead by example through mentoring, driving best practices in code reviews, and improving our development processes. Own the architectural evolution of our platform, proactively addressing tech debt and planning for future growth. Drive product validation through rapid experimentation and a deep understanding of user needs. What You’ll Bring 5+ years of professional experience in backend or platform engineering. Strong proficiency in a modern backend language such as Go, Rust, Java, or C#. Deep experience with cloud infrastructure and container orchestration (AWS, Kubernetes, Terraform). Proven ability to design, build, and maintain scalable, distributed systems. Demonstrated experience mentoring other engineers and leading technical projects or discussions. A user‑centric mindset with a passion for building great products. Bachelor’s degree in Computer Science or a related field, or equivalent practical experience. Bonus Points Experience developing real‑time, low‑latency (