JOB-001SafePlay Engineering

SafePlay SDK Engineer

Build the Guardian SDK and the game-facing integration layer that lets developers adopt SafePlay without making their game architecture fragile.

RemoteFull-time or contractMid-level

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01About the role

SafePlay is KalyTrex's gaming-first safety platform. The immediate engineering focus is the Guardian SDK: a small, dependable integration surface for games that can enforce policy, report safety events and work with different age-assurance providers without coupling a game to one verification vendor.

You will work on the Unity integration first, including the C# package and its boundary with the platform-neutral core. The role is hands-on: API design, runtime behaviour, native interop, testing, example integrations and the developer documentation that makes the SDK practical to adopt.

We care about simple integration, predictable failure behaviour and clear ownership between the game, Guardian, the control plane and external assurance providers. Unreal and additional platform wrappers can follow once the core integration model is stable.

02What you will do

Design and implement the Guardian SDK integration surface for Unity
Build clear C# APIs and help evolve the platform-neutral/native core boundary
Implement SafePlay event, policy and fail-safe runtime behaviour
Create sample integrations and automated tests that reflect real game architectures
Work on provider-neutral interfaces for age-assurance and policy inputs
Document integration decisions, limitations and upgrade paths for game developers
Debug integration and performance issues inside the SafePlay demo environment

03What we look for

Strong C# engineering experience and practical Unity development
Experience designing maintainable libraries, SDKs, packages or reusable APIs
Good understanding of testing, debugging and backwards-compatible API design
Comfort reasoning about failure modes, security boundaries and external integrations
Clear written communication and willingness to maintain developer-facing documentation
C or C++ interop, native plugin or cross-platform SDK experience is useful but not required

04Apply

01 · Role

Selected vacancy

This application will be attached to the vacancy shown below.

Applying for

SafePlay SDK Engineer

SafePlay Engineering · Remote

02 · About you

Your details

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Your name *

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Portfolio, GitHub or LinkedIn (optional)

03 · Role evidence

Role-specific questions

Use concrete examples where possible. These questions help us understand the experience behind your CV.

Q01Required

Describe a reusable SDK, library or API you designed or integrated. What decisions made its public interface maintainable?

Use a concrete example. We are interested in API boundaries, testing, versioning and integration trade-offs.

Q02Required

A Unity game must remain playable when an external age-assurance or control-plane dependency is unavailable. How would you design the SDK behaviour?

Explain the runtime states, fallback behaviour and what the game developer should receive from the SDK.

Q03Optional

Which area best represents your strongest relevant experience?

04 · Final note

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This application

Applying for SafePlay SDK Engineer

The role is already selected, so you only need to tell us about your experience, relevant work and why this opportunity interests you.

Prefer email?

You can also send your CV and a short note directly to the KalyTrex team.

contact@kalytrex.com

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