Principal Software Engineer

About the role

Cesium, as part of Bentley Systems, is setting the standard for 3D geospatial technology across diverse industries, from construction and engineering to defense and aerospace. With a thriving open-source community and millions of downloads, we are at the forefront of innovation. We are seeking a visionary Principal Engineer to join our Cesium Native squad.

Responsibilities

• Architect, develop and shape the future of the core Cesium Native C++ libraries, focusing on performance, modularity, and clean API design to support our integrations with Unreal Engine, Unity, and NVIDIA Omniverse.
• Drive the research and implementation of novel 3D graphics algorithms, tackling the most challenging problems in large-scale geospatial visualization.
• Enhance our runtimes capabilities for high-performance streaming, level-of-detail selection, and efficient decoding of massive geospatial datasets.
• Profile and debug the engine to identify and eliminate performance bottlenecks, ensuring a smooth experience for end-users on a variety of platforms.
• Set the standard for engineering excellence within the team and the open-source community through exemplary code, insightful reviews, and strategic technical guidance.
• Mentor and grow other senior engineers on the team, fostering a culture of technical innovation and continuous improvement.
• Partner with product management and engineering leadership to define and execute the multi-year technical roadmap for the Cesium Native ecosystem.

Qualifications

• Over 12 years of professional experience in 3D runtime or game engine development.
• Expert-level C++ development skills (C++17/20/23), with a strong focus on API design, modular architecture, and high performance.
• Recognized expertise in modern graphics APIs (Vulkan, DirectX 12, Metal) and advanced 3D graphics algorithms.
• Proven experience leading the technical design and implementation of core engine components for platforms like Unreal Engine, Unity, or NVIDIA Omniverse.
• Solid understanding of graphics algorithms, spatial data structures, and 3D mathematics.
• Experience debugging, profiling, and optimizing complex, multi-threaded graphics applications.
• Familiarity with geospatial concepts and data formats such as photogrammetry, point clouds, terrain, and open standards like glTF and 3D Tiles.
• Excellent written and verbal communication skills, with experience collaborating with both internal teams and external communities.
• Demonstrated ability to influence and lead cross-functional teams and effectively mentor other senior engineers.
• BS or MS in Computer Science, Software Engineering, or a related field, or equivalent industry experience.