3D C++ Software Engineer

Department: Research & Development

Location: US-North Carolina-Raleigh

Description

Join us in transforming digital orthodontics for over 212,000 doctors and 12.2 million patients worldwide. As a 3D C Software Engineer, you will design and develop the core algorithms and systems behind our next‑generation 3D applications, directly enabling innovative orthodontic devices. In this dynamic research and development environment, you will apply advanced C , 3D computational geometry, and mathematical methods to solve complex problems at scale, working closely with cross‑functional teams including biomechanics, manufacturing, and product engineering. This role offers the opportunity to contribute from early research through production, shaping the future of 3D orthodontic technology.

Role expectations

• Design and develop C implementations of 3D geometry algorithms, working directly with triangle meshes and derived geometric representations used in research and production software, including pipelines that translate design intent into manufacturing‑ready representations.
• Apply computational geometry and mesh processing techniques to analyze real‑world requirements, including constraints arising from additive manufacturing processes, evaluating accuracy, robustness, and performance trade‑offs, and implement solutions that behave correctly across edge cases.
• Translate product and technical requirements into clear designs and reliable implementations, selecting appropriate methods and tools.
• Collaborate with clinical, biomechanical, manufacturing, and product partners to translate domain constraints into concrete geometric behavior, validating assumptions through implementation and iteration.
• Deliver high quality, maintainable, and testable code, contributing to the ongoing improvement of a large and evolving codebase in a regulated environment.
• Participate in an agile R&D team, supporting feature delivery, issue resolution, and coordinated releases with globally distributed teams.
  
  

What We're Looking For

• BS in mathematics, computer science, engineering, or equivalent degree; PhD and master’s degree are preferred, or equivalent years of experience.
• 5 years of directly related professional experience developing software for technical or scientific applications.
• Strong proficiency in modern C , including tools such as Git, Visual Studio, Jira, and Confluence.
• Strong foundation in linear algebra, geometry, or numerical methods as applied to 3D problems.
• Ability to clearly describe previous 3D or geometry‑related work, including the problem being solved, the approach taken, and the trade‑offs involved.
• Strong analytical and problem‑solving skills, with the ability to understand, structure, and reason about complex technical problems.
• Experience translating requirements into robust, maintainable implementations within a collaborative development environment.
  
  

Desirable

• Familiarity with software development best practices, including code reviews, testing, and documentation.
• Experience in a research, R&D, or startup‑like environment.
• Working knowledge of common development tools such as Git, Visual Studio, Jira, and Confluence.
• Experience developing or deploying software on Linux.
• Exposure to cloud services (e.g., AWS) or large‑scale workflows.
  
  

Pay Transparency

If provided, base salary or wage rate ranges are the range in which Align reasonably expects to set a candidate’s pay for the posted position. Actual placement depends on the individual skills and experience level of a candidate plus the total compensation and equity across team members. For other locations outside of the primary location, the base salary range will be adjusted geographically.

For Field Sales roles, the salary listed is the base pay only and does not include the applicable incentive compensation plan. A cost of living adjustment may be added to base pay for higher cost areas in the U.S.

Our internship hourly rates are a standard pay determined based on the position and your location, year in school, degree, and experience.

General Description Of All Benefits

We are pleased to provide a general description of the benefits Align offers to full-time employees in this position.

Benefits

Family Benefits. Align offers employees and their eligible dependents medical (with a Health Savings Account option for some plan offerings), dental, and vision in accordance with those plans. Align also offers to employees:

• Discounts on Invisalign and Vivera to employees and their eligible dependents after 90 days of employment
• Back-up Child/Elder Care and access to a caregiving concierge
• Family Forming Benefits – Available to Employees, and their spouse or domestic partner, covered under one of Align’s health plans
• Breast Milk Delivery and Lactation Support Services
• Employee Assistance Program
• Hinge Health Virtual Physical Therapy – Available to all employees and eligible dependents (age 18 ) enrolled in an Align medical Plan
• Employee benefits. Align offers its employees:
• Short-term and long-term disability insurance in accordance with those plans.
• Basic Life Insurance and Accidental Death and Dismemberment. Voluntary Supplemental Life Insurance for Employee, Spouse/Domestic Partner, and Child(ren) are available for purchase in accordance with those plans.
• Flexible Spending Accounts – Employees may be eligible to participate in a health care account (including a limited health FSA if enrolled in a HDHP), dependent care account, and a pre-tax commuter benefit plan.
• 401k plan (with a discretionary Company match of 50% up to 6% of eligible earnings up to a maximum match of 3%.). Employer match vests after two years – 25% year one and 100% at year two. Align offers traditional, Roth, and after-tax options.
• Employee Stock Purchase Program (Employees must work 20 hours or more and be employed on purchase date to be eligible).
• Paid vacation of up to 17 days during the first full year of employment (currently accrued at the rate of 5.24 hours each pay-period), which carries over to a maximum cap of 30 days. Annual paid vacation time accrual increases based on tenure. Both exempt and non-exempt employees who work 32 hours or more per week receive prorated vacation accrual based on their regularly scheduled work hours and tenure.
• Sick time is accrued throughout the year at the rate of one hour for every thirty worked. Employees can carry over unused sick leave each year, up to a maximum balance of 80 hours.
• 11 Company-designated paid holidays throughout the year.
• If employed for at least 12 consecutive months, Align will grant up to 6 weeks of paid Parental Leave. If employed for less than 12 consecutive months, Align will grant up to 4 weeks of paid Parental Leave. All parental leave must be completed within one year of the birth or placement of the child. Parental leave is in addition to any state and/or local parental leave benefits. Three days of paid bereavement leave. In some cases, due to travel the amount of paid leave may be extended to 5 paid days off. To the extent applicable state or local law offers more generous benefits, Align complies with any such law.
• Non-exempt employees will receive full pay for up to 10 days of jury duty. Exempt employees will receive their full salary during any week they serve and perform any work. Other insurance such as legal, critical illness, voluntary accident, long-term care, auto, home and pet insurance are available for purchase.
• To the extent applicable state or local law offers more generous benefits, Align complies with any such law.
  

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Equal Opportunity Statement

Align Technology is an equal opportunity employer. We are committed to providing equal employment opportunities in all our practices, without regard to race, color, religion, sex, national origin, ancestry, marital status, protected veteran status, age, disability, sexual orientation, gender identity or expression, or any other legally protected category. Applicants must be legally authorized to work in the country for which they are applying, and employment eligibility will be verified as a condition of hire.