Senior Test Automation Engineer / SDET (Crypto)

Senior Test Automation Engineer / SDET

Company

Cyclops

Conditions

6 days agoLead Remote. EU, USA, Argentina, Brazil Remote Contract Engineering Jobs by Cyclops

Job for Web3 Beginners

Skills

Ai Api Testing Ci/Cd Contract Testing Crypto Custody Gitlab Ci Idempotency Integration Testing Kyb Kyc Load Testing Mocking Pact Parallelization Performance Testing Playwright Reconciliation Screening Sdet Settlement Stablecoin State Machine Stubbing Test Automation Test Framework Test Harness Test Infrastructure Test Pipeline Testrail Typescript

Candidate Availability

Remote · Argentina · Required Remote · Brazil · Required Remote · Europe · Required Remote · United States · Required Required and preferred rules are kept separate and reflect the wording in the original posting.

About the Role

You build the test infrastructure for a crypto payment platform, including vendor mocks, simulators, contract tests, test data tooling, CI pipelines, reliable test suites, and production-adjacent checks. You create reusable testing frameworks, eliminate flaky tests, coach engineers on effective testing, and support testing across custody, AML, screening, and stablecoin settlement systems.

Requirements

• 5+ years as a software engineer with substantial test-infrastructure ownership
• Strong TypeScript skills
• Experience building test frameworks and harnesses from scratch
• Hands-on experience with Playwright or a modern automation framework
• Experience designing CI/CD test stages with parallelization and selective test execution
• API testing and mocking or stubbing of third-party services
• Daily use of AI coding tools and ability to review AI-generated code critically
• Ability to build a working understanding of crypto and stablecoin payment flows on the job
• High agency and independent prioritization
• Written and verbal communication in English
• Understanding of idempotency, reconciliation, and state machines
• Experience with contract testing tooling such as Pact
• Performance and load testing experience
• Experience in a regulated environment
• Experience with TestRail or similar test management tooling

Responsibilities

• Design and build stateful mocks and simulators for third-party vendor APIs
• Implement contract tests against real vendor sandboxes
• Build test data and environment tooling
• Own the CI test pipeline and optimize feedback, integration suites, parallelization, and test execution
• Eliminate flaky tests through quarantine, statistics, and root-cause analysis
• Create test-writing scaffolding, helper libraries, fixtures, and object builders
• Document test patterns for AI-assisted test generation
• Coach engineers on writing effective tests through reviews and pairing
• Build post-deploy smoke tests and synthetic transactions
• Automate verification before traffic switches to a service

Benefits

• Flexibility to determine how and when work is delivered
• Company-issued laptop
• Technology accessories
• Annual in-person full-team meetup

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