Software Engineer

SOUTHWORKS
Full-time Mar del Plata, Buenos Aires Other-General
Posted:
February 28, 2026
Location:
Mar del Plata, Buenos Aires, Argentina

Job Description

Type:
Contract, per-project.

Location:
Remote - alignment with North America is preferred (ideally Pacific Time, acceptable PT-ET).

Availability:
Contractor (40 hours per week)

We're looking for a highly capable Software Engineer to join our Powered team and help build the core libraries behind every Speedtest client, as well as the SDKs used by device manufacturers and third-party application developers worldwide.

You'll work on low-level networking features, platform-specific implementations and cross-platform SDKs that directly impact how millions of users measure and understand their Internet performance.

What you'll do

  • Design and build core SDK and library features used by Speedtest clients and third-party partners
  • Develop network testing functionality using Kotlin and Kotlin Multiplatform
  • Build and maintain performance-critical components using C++
  • Maintain and support legacy SDK products built ...

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Job Overview

Job Type: Full-time
Location: Mar del Plata, Argentina
Posted: February 28, 2026
Deadline: April 09, 2026