Senior Software Engineer

Unity Enterprise; København; On-site; DKK 639,000 - 799,000; Full time

Benefits offered by this job

Comprehensive health insurance

Commuting subsidy

Employee stock ownership

Retirement/pension plans

Generous vacation and personal days

Parental leave support

Office snacks

Mental health programs

Employee resource groups

Training programs

Volunteer matching

Job summary

Unity is seeking an experienced engineer to design unified APIs across platforms, contribute to the codebase, and ensure robust API design with high‑quality C++/C# coding practices. The role emphasizes collaboration across teams, API abstraction for multi‑platform support, and long‑term ownership through thoughtful documentation and refactoring.

You will work on cross‑platform features, potentially including native plugin work, while maintaining a focus on scalable APIs and testable

Qualifications

• Experience in C# and developing Unity-based games and extending the Unity editor.
• Ability to abstract platform requirements into a cohesive API surface.
• Experience with native development on at least one platform (desktop/mobile/console).
• Contributed to cross‑team projects from start to finish.
• Knowledge of writing native plugins for Unity and API design/ asynchronous paradigms.
• Demonstrates long‑term ownership through documentation of decisions and code APIs.

Responsibilities

• Craft unified APIs for features across platforms in a single, testable way.
• Contribute API implementations to the Unity codebase, including unit tests.
• Advocate unification of platform implementations into simple abstractions.
• Deliver a stable product by applying robust API design and high‑quality C# and C++ coding practices.
• Refactor existing code to improve efficiency and maintainability, addressing user feedback.

Skills

C#

Unity

API design

Cross‑platform

Native plugins

Async programming

Code documentation

Job description

The opportunity To achieve this mission, we are looking for an experienced engineer to join us. A successful developer in this role will be a one who has the desire to investigate and understand how similar features are implemented across various platforms, then use that knowledge to design unified APIs that can be used across platforms. This will require deep cooperation with teammates as well as the willingness to build relationships with technical teams across Unity. We strive for an environment in which the best ideas win by encouraging and respecting the input of all team members, taking into account different communication styles and experiences.

What you'll be doing

• Crafting unified APIs that implement features of various target platforms in a single, unified and testable way
• Contributing the implementations of these APIs to the Unity codebase, including unit tests
• Advocate for the unification of disparate platform implementations into simple abstractions across Unity
• Deliver a stable quality product that the team is proud of by exemplifying robust API design methodologies along with high-quality C# and C++ coding practices
• Refactoring existing code to be more efficient and maintainable, responding to user feedback and solving user issues with the codebase

What we’re looking for

• Experience in C# and developing Unity-based games and extending the Unity editor
• Experience abstracting the requirements of different platforms into a simple, cohesive API surface-area
• Knowledge of native development on at least one desktop, mobile or console platform with the curiosity to work with additional platforms
• Experience contributing to cross-team projects from initiation to completion
• Knowledge of writing native plugins for Unity and/or experience with API design and asynchronous coding paradigms
• Long term code ownership mentality by being diligent with documentation on thought processes, decisions made and code API

Salary

Salary: 639,400.00 - 799,300.00 Dkk annual This range reflects the anticipated base salary for this position. Beyond base salary, this role may be eligible for equity awards and participation in our company incentive plans (such as annual discretionary bonuses or sales commissions). The final offer amount will depend on several factors, including geographic location and the candidate's relevant experience, professional background, and skill set.

Benefits

• Comprehensive health, life, and disability insurance
• Commute subsidy
• Employee stock ownership
• Competitive retirement/pension plans
• Generous vacation and personal days
• Support for new parents through leave and family-care programs
• Office food snacks
• Mental Health and Wellbeing programs and support
• Employee Resource Groups
• Global Employee Assistance Program
• Training and development programs
• Volunteering and donation matching program

Life at Unity

Unity [NYSE: U] is the world's leading game engine, powering play for more than 3 billion consumers each month.

The top mobile games in the world, the most played PC indie titles, the most innovative console games, and virtually all of the top XR and Web Games are developed, deployed, and grown in Unity.

Unity also enables teams across industries like automotive, manufacturing, and healthcare to design, simulate, and collaborate in 3D - closing the gap between ideas and reality.

Unity is a proud equal opportunity employer. We are committed to fostering an inclusive, innovative environment and celebrate our employees across age, race, color, ancestry, national origin, religion, disability, sex, gender identity or expression, sexual orientation, or any other protected status in accordance with applicable law. Our differences are strengths that enable us to support the growing and evolving needs of our customers, partners, and collaborators.

If you have a disability that means there are preparations or accommodations we can make to help ensure you have a comfortable and positive interview experience, please fill out this form to let us know.

This position requires the incumbent to have a sufficient knowledge of English to have professional verbal and written exchanges in this language since the performance of the duties related to this position requires frequent and regular communication with colleagues and partners located worldwide and whose common language is English.

This posting is intended to fill an existing vacancy, and we are committed to providing applicants with updates throughout the hiring process in accordance with applicable law.

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At Unity, we are committed to creating a workplace that fosters collaboration and teamwork that allows you to harness your unique skills.

Learn more about our culture and values, and get a head start by reading about how our hiring process works.