Sr. 3D C++ Software Engineer (On-site)

Job Description: About the Team: The software team is part of the Global Manufacturing Engineering (GME). Alongside GME’s Hardware Controls, Manufacturing Process, and Automated Quality Control teams, we build the geometrical compiler behind Spark Clear Aligners: the math-heavy software stack that turns digital treatment intent into physical parts at production scale. Our systems decide how geometry gets transformed, nested, validated, and translated into instructions that run across a global factory footprint producing more than 100,000 unique parts per day. This is not generic application development. Our code drives scanners, printers, mills, and other fab equipment. Physical reality is the unit test. When the math is wrong, parts are wrong. Job Summary: We are hiring a Sr. 3D C++ Software Engineer who is genuinely strong in applied math, understands the physics behind manufactured parts and processes, and can turn that reasoning into production-grade C++. You will work on the core algorithms and services that bridge CAD to CAM: geometry processing, numerical optimization, physical constraint modeling, and the software interfaces that let those models run reliably in production. You should be comfortable moving from formulating a problem from first principles to shipping the implementation without handholding. If deriving a normal from three points on a triangle, reasoning about numerical stability, or solving a nonlinear equation numerically feels outside your daily toolkit, this is likely not the right role. At this production volume, a solver running at 99.9% reliability still generates roughly 100 support escalations per day. Correctness isn’t a quality bar — it’s a throughput constraint. This is a full-time and on-site five days/week engineering role in Pomona, CA. Rapid development here depends on being next to the hardware and the people using it. You will work directly with R&D equipment such as scanners, 3D printers, CNC systems, and metrology tools, shortening the loop between idea, code, experiment, measurement, and revision from weeks to days. Essential Duties and Responsibilities: Build the mathematical core: Formulate, design, and implement algorithms for 3D geometry processing, numerical optimization, spatial reasoning, and CAD/CAM translation in a production manufacturing environment. Model physical constraints in software: Turn real-world process behavior, machine limits, material effects, and measurement data into robust computational models that survive contact with actual hardware. Write expert-level C++: Develop high-performance, maintainable C++20 systems for compute-heavy workloads where correctness, numerical robustness, and runtime behavior all matter. Prototype with purpose: Use Python, NumPy, SciPy, and related tools when they speed up discovery, then harden the right ideas into production services. Run tight hardware-software loops: Work side by side with R&D and Operations to test algorithms on equipment, inspect outputs, understand failure modes, and iterate quickly based on measured results. Ship math in real systems: Package algorithms behind gRPC and Protobuf interfaces, operate within Bazel- and Conan-based builds, and make sound choices about how compute-heavy services run in Docker and AWS Kubernetes environments. Any duties or tasks assigned by Manager. Examples of the Work: Detect geometry with no downward path to the build plate and automatically generate support structures that prevent mid-print failure — without adding unnecessary material or obstructing neighboring parts. Given a hollow 3D-printed part with non-uniform structural loading, compute the wall thickness profile it actually needs — then implement the custom offset surface that produces it. Register a 3D scan of a printed mold against its digital blueprint, segment the surface into regions by structural importance, and produce a localized devtaion map that flags quality failures at production scale. Given a 5-axis CNC toolpath, find the velocity profile that keeps every drive within its speed and acceleration limits without unnecessarily slowing the overall cut. Job Requirements: Basic Qualifications Bachelor’s degree in computer science, a related technical field, or equivalent practical experience. 5+ years of professional software development experience, including substantial work in large modern C++ codebases. Deep fluency in 3D geometry, linear algebra, numerical methods, and optimization. You should be able to reason from first principles. Experience in the physics that sit underneath geometric or manufacturing problems, with the judgment to translate continuous models into stable discrete implementations. Demonstrated ability to formulate and implement mathematically demanding algorithms in production-quality C++ with attention to correctness, performance, memory behavior, and maintainability. Experience building software for computational geometry, CAD/CAM, scientific computing, graphics, robotics, simulation, or another domain where math and physical constraints materially shape the solution. Must reside within a commutable distance to Pomona, CA. This is not a remote or hybrid opportunity. Preferred Qualifications Hands-on experience with libraries such as CGAL, Eigen, Embree, VTK, or Draco. Experience with ICP or point cloud registration is a strong plus. Strong command of modern C++20, including the engineering judgment to build reliable abstractions around complex numeric code. Experience using Python for fast numerical prototyping and using Go where backend integration benefits from it. Familiarity with gRPC, Protobuf, Bazel, Conan, Docker, Helm, and AWS Kubernetes for shipping compute-heavy services. Experience instrumenting production systems with OpenTelemetry, Prometheus, Loki, Clickhouse, or Grafana. Direct work with manufacturing or lab equipment such as CNC machines, 3D printers, scanners, vision systems, or metrology tools. Abilities: Basic project management experience, good organization, and prioritization skills Must possess excellent communication (technical, oral, written) and the ability to describe complex technical issues clearly. Able to follow instructions and guidelines set forth by the Manager. Driven and motivated individual with demonstrated critical thinking and analytical skills. Ability to discern trends and analyze operational and financial reports. Under general supervision, plan, conduct, lead, and report on significant projects. Review progress, evaluate results, and inform company management on assigned project direction and status. A team player that can work well under constrained deadlines and communicate effectively with technical and non-technical personnel. Follows directions well and is a self-starter in identifying what is critical to the success of the project. Ability to communicate complex technical concepts clearly to software, manufacturing, R&D, and operations stakeholders. Ability to reason from first principles and make sound engineering judgments in math-heavy software systems. Ability to prioritize technical work in a production manufacturing environment where correctness, reliability, and throughput matter. Ability to work independently on ambiguous technical problems and drive them from formulation through implementation and validation. Ability to collaborate effectively with cross-functional teams, including R&D, Manufacturing Engineering, Operations, and Quality. Ability to follow applicable safety, quality, regulatory, and compliance procedures when working near R&D or manufacturing equipment. Ability to travel at least 10% of the time to various manufacturing sites, both domestically and internationally, to oversee process implementation and provide on-site support. Physical Demands: Working hours and shifts will vary and are dependent upon business needs. The noise level in the office environment is low, but moderate to loud in manufacturing areas. The employee must follow applicable safety procedures when working near manufacturing equipment. Ability to stand and/or sit for long periods of time as required by business needs. Occasional bending, reaching, or handling of lightweight parts or test artifacts may be required. Occasionally push, pull, lift and/or bend as required. Must be able to lift up to 10 pounds. Target Market Salary Range: Actual compensation packages take into account a wide range of factors that are unique to each candidate, including but not limited to geographic location; skill sets; relevant education and certifications; depth of experience; performance; and other business and organizational needs. The disclosed reasonable estimate has not been adjusted for the applicable geographic differential associated with the location at which the position may be filled. At Envista, it is not typical for an individual to be hired at or near the top of the range for their role and compensation decisions are dependent on the facts and circumstances of each case. The total compensation package for this position may also include an annual performance bonus, medical/dental/vision benefits, 401K match, and/or other applicable compensation plans. $168,300 - $205,700 Operating Company: Ormco Ormco is a global leader and innovator of high-quality orthodontic products and solutions, including brackets and wires. For more than 60 years, our team has partnered with the orthodontic community to help create over 20 million smiles in more than 140 countries. We build trusted relationships. Each one is rooted in respect and understanding. We take that approach when we help orthodontists achieve their clinical and practice management objectives. We take the same approach when we help our team bring their personal best to work each day, ready to make a difference and reach their full potential. Equal Employment Opportunity (EEO) Statement Envista and all Envista Companies are equal opportunity employers that evaluate qualified applicants without regard to race, color, national origin, religion, sex, age, marital status, disability, veteran status, sexual orientation, gender identity, or other characteristics protected by law. The “EEO is the Law” poster is available at: #J-18808-Ljbffr Ormco