Software Development Engineer in Test

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Software Development Engineer in Test in Others new

Mapbox
Full time
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11/13/2026
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Helsinki, Finland

Responsibilities

Build and maintain unit, integration, and functional test architecture for a C++17 library.
Develop CMake and CI pipelines for the test infrastructure.
Convert real-world location recordings into regression tests and define quality metrics for map matching, routing, and route following.
Improve test-signal speed and reliability by eliminating flaky tests, running sanitizer and performance builds, and tracking coverage.
Build AI-driven tooling for test generation, dogfooding, triage, and pull-request review.
Partner with feature engineers on testability and review designs for verification.

Requirements

Demonstrate solid C++17 proficiency, including writing test code and tooling, reading production code, and debugging with sanitizers and profilers.
Use Python or a similar language for test harnesses and analysis.
Have proven experience building test infrastructure for a large native codebase, including test frameworks, CMake, and CI systems.
Define metrics and build measurement tooling to support data-driven quality decisions.
Diagnose hard-to-reproduce failures such as flaky tests, platform-specific behavior, and memory or threading bugs.
Communicate test results, risks, and trade-offs effectively in English.
Familiarity with navigation concepts, replay or simulation testing using sensor and GPS data, AI- or agent-based developer tooling, coverage or benchmarking tools, or SDK testing through generated bindings is preferred.

Benefits

Hybrid or remote work options, with the ability to work from home or periodically from an applicable office.
Private health, dental, and income protection plans tailored to regional statutory benefits.
Family care, maternity, and paternity leave policies.
Lifestyle spending account contributions for health, wellness, and personal growth.
Mental health support for employees and dependents.
Paid time away, company holidays, and generous absence policies.
Dedicated paid volunteering time in addition to standard paid time off.

Mapbox

At Mapbox, innovation and customer satisfaction are at the center of our mission to deliver impactful business solutions.

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