Senior Kotlin Multiplatform Engineer

Position: Sr Kotlin Multiplatform (KMP) Engineer

Location: Mississauga OR Montreal - Hybrid (at least 2 days to office)

Open for anyone willing to relocate to Montreal or Mississauga

Contract: 6+ Months

Job Details:

Design and own the initial architecture of a Kotlin Multiplatform codebase

Make pragmatic decisions that balance speed to MVP with long-term maintainability

Integrate and use Java components where appropriate within a KMP setup

Be hands-on in the codebase, especially early on, and continue contributing meaningful production code

Define development standards, tooling, and technical direction

Work directly with the founder, with direct access to technical decisions

Participate in hiring and mentoring additional engineers as the team grows

Qualification

Senior-level experience with Kotlin

Strong experience with Kotlin Multiplatform (KMP) or deep expertise in cross-platform architecture

Understanding of the KMP ecosystem (e.g., Ktor, SQLDelight, Compose Multiplatform, Decompose, Voyager)

Comfortable using Java within a KMP project (interop, integration, gradual evolution)

Experience building large or complex systems, ideally from early stages

Strong technical judgment and comfort with ambiguity and evolving requirements

Willingness to take ownership of problems end-to-end, including making pragmatic trade-offs