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About the Role

We are seeking a visionary Principal Engineer to join our Cesium Native squad. This role is pivotal in advancing our core C++ libraries that power 3D geospatial applications and experiences within the world's leading game engines. You will be a leading voice in the technical direction of our open-source, cross-platform technology that enables developers to stream and visualize massive real-world 3D datasets.

Responsibilities

Architect, develop and shape the future of the core Cesium Native C++ libraries, focusing on performance, modularity, and clean API design to support integrations with Unreal Engine, Unity, and NVIDIA Omniverse.
Drive the research and implementation of novel 3D graphics algorithms, tackling challenging problems in large-scale geospatial visualization.
Enhance 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 various 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.
Requires sitting or standing at will while performing work on a computer.
No travel is required for this role.

Requirements

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.

Skills

C++17/20/23
API design
Modular architecture
High performance
Vulkan
DirectX 12
Metal
3D graphics algorithms
Unreal Engine
Unity
NVIDIA Omniverse
Graphics algorithms
Spatial data structures
3D mathematics
Debugging
Profiling
Optimization
Multi-threaded graphics applications
Geospatial concepts
Photogrammetry
Point clouds
Terrain
glTF
3D Tiles
Communication skills
Collaboration

Location

Philadelphia, PA

Work Type

Hybrid

Experience Level

Principal
12+ years

Education Level

BS or MS in Computer Science, Software Engineering, or related field, or equivalent industry experience

Benefits

An attractive salary and benefits package.

About the Company

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.
Around the world, infrastructure professionals rely on software from Bentley Systems to help them design, build, and operate better and more resilient infrastructure for transportation, water, energy, cities, and more. Founded in 1984 by engineers for engineers, Bentley is the partner of choice for engineering firms and owner-operators worldwide, with software that spans engineering disciplines, industry sectors, and all phases of the infrastructure lifecycle. Through our digital twin solutions, we help infrastructure professionals unlock the value of their data to transform project delivery and asset performance. www.bentley.com

Equal Opportunity

Bentley is an equal opportunity employer and considers all qualified applicants for employment without regard to race, color, sex, sexual orientation, gender identity, disability, pregnancy, protected veteran status, religion, national origin, age, genetic information or any other protected characteristic. This commitment extends to all aspects of employment, including, but not limited to, hiring, placement, promotion, compensation, and training.
As an Equal Opportunity Employer, Bentley is committed to providing reasonable accommodations to applicants with disabilities. We encourage you to request a reasonable accommodation if you are not able to fully use or access our online application system. You can make an accommodation request by calling 610-458-5000 or sending us an email at disabilityrequest@bentley.com