Quality Assurance Automation Engineer

Cumberland Labs

Quality Assurance Automation Engineer at Cashen, creating QA infrastructure for financial platform. Collaborating with CTO and development team to ensure software correctness across multiple layers.

Posted 7/8/2026full-timeRemote • 🇺🇸 United StatesMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

CypressJavaScriptJestReactTypeScript

About the role

Key responsibilities & impact

You own quality and test automation at Cashen.
You will build the QA infrastructure from the ground up — automated test suites, CI integration, regression coverage, and release validation — for a platform where bugs have financial consequences.
You work directly with the CTO and the development team to ensure that every release meets the correctness bar required for institutional financial software.
As the platform expands from off-chain marketplace to on-chain DAML smart contracts, you will extend test coverage across both layers.

Requirements

What you’ll need

3–5 years in QA engineering or test automation, with experience building test infrastructure — not just running manual test plans
Strong TypeScript and JavaScript proficiency — the backend is NestJS, the frontend is React, and your test tooling must integrate with both
Experience with API testing, integration testing, and end-to-end test frameworks (Playwright, Cypress, Jest, or equivalent)
Background in fintech, financial services, or any system where numerical precision and state machine correctness matter
Familiarity with CI/CD pipelines — you will wire automated tests into the deployment process
Comfortable reading and reasoning about financial logic: interest calculations, LTV thresholds, settlement sequences, and multi-party deal flows
Build the automated test suite from scratch: integration and end-to-end coverage across backend APIs and frontend application
Design test frameworks for financial logic validation — interest accrual precision, state machine transition completeness, margin call trigger accuracy
Integrate automated tests into CI/CD pipelines so that every pull request and deployment is validated before reaching production
Build and maintain test data fixtures and environment management for repeatable, isolated test execution
Own the release validation process — define what “release-ready” means and enforce it
Collaborate with engineers during development to identify testability gaps and advocate for testable architecture
Extend test coverage to DAML smart contracts and on-chain/off-chain integration as the platform moves to Canton
Document test plans, coverage maps, and known gaps so the team has visibility into quality posture at all times

Benefits

Comp & perks

Build from zero: You design the entire QA infrastructure for an institutional financial platform
Real financial stakes: Your work directly protects institutional counterparties from incorrect deal execution
Canton ecosystem: Backed by Ergonia and Cumberland, with direct access to Canton Foundation and ecosystem partners
Lean team, high leverage, fast-paced: Every test you write guards real capital. Quality is not an afterthought here

ATS Keywords

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Hard Skills & Tools

Test Infrastructure BuildingAutomated Test SuitesIntegration TestingEnd-to-End TestingFinancial Logic ValidationRegression CoverageRelease ValidationTest Framework DesignTest Data ManagementDAML Smart Contracts

Soft Skills

CollaborationAdvocacy for Testable Architecture