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Phantom is the modern money app used by tens of millions around the world. Our product combines everything people need to manage, spend, and grow their money in one simple, intuitive experience. Phantom brings all the control and flexibility of crypto-powered finance, without unnecessary complexity, into mainstream consumer finance.

By combining industry-leading security with thoughtfully designed tools, Phantom makes powerful financial tools feel approachable and easy to use. This focus on speed, control, and user experience has fueled rapid growth, with a community of 20M+ people, reaching #1 in the Google Play Store finance category, and consistently ranking as a Top 50 app across all categories, alongside some of the most recognizable consumer technology platforms in the world.

The Role

We're looking for an SDET who thinks like an engineer and tests like one too. You won't be writing test cases in a spreadsheet. You'll be designing and owning test infrastructure for financial-grade systems — payment flows, KYC pipelines, card transaction handling, and the compliance rails that underpin them.

This is not a QA role. It's an engineering role that happens to own quality as its primary output surface. You will work embedded in a team that ships production financial software at startup velocity. That means your job is to make speed and correctness coexist — not to be the brake pedal.

What You'll Own

• Test automation platform for Money Movement: end-to-end tests, API contract tests, integration test suites covering funding rails, card transactions, KYC flows, and Cash account operations.

• CI/CD quality gates: design, implement, and maintain test pipelines that run on every PR and block regressions from reaching production.

• Failure mode coverage: model the real failure modes — duplicate charges, partial KYC completions, webhook replay, idempotency violations, provider outages — and build tests that catch them before users do.

• Performance and load testing: validate that payment flows hold up under peak load; identify latency regressions before they hit p95 in production.

• Test data and environment infrastructure: own the tooling that makes tests repeatable, isolated, and fast.

• Observability for test quality: track test coverage, flakiness rates, bug escape rates, and regression detection latency as real metrics with real owners.

Qualifications

Core engineering:

• Strong proficiency in at least one of: Python, TypeScript/JavaScript, Go

• Experience designing and building test frameworks from scratch (not just adding tests to an existing suite)

• Deep familiarity with API testing — REST, webhooks, idempotency, retry behavior, edge cases at integration boundaries

• Working knowledge of databases (SQL) and the ability to write test data seeding/cleanup logic correctly

Financial systems (strong preference, will train for the right engineer):

• Experience testing payment flows, ledger systems, or compliance pipelines

• Understanding of idempotency, double-spend prevention, and eventual consistency in distributed systems

• Familiarity with webhook-based event systems and out-of-order delivery scenarios

CI/CD and infrastructure:

• Experience integrating test suites into CI pipelines (GitHub Actions, GitLab CI, or similar)

• Ability to instrument tests for flakiness detection, coverage tracking, and runtime performance

• Comfort operating in a cloud environment (AWS, GCP) and reading service logs/traces

Operational mindset:

• You can define what "this test passing" actually means in production terms

• You've contributed to or owned an incident post-mortem with concrete prevention steps

• You understand canary deployments, feature flags, and how to write tests that survive staged rollouts

What You'll Work On (Day 1 Context)

The Money Movement team's current test coverage has gaps in areas that matter most: KYC state machine transitions, on-ramp provider failure paths, and card authorization edge cases. These aren't nice-to-haves. They're reliability debt that creates customer impact and slows engineering velocity.
Your first 90 days will likely include:

• 30 days: map current test coverage against known failure modes; identify the top 3 gaps; ship at least one meaningful test suite that catches a real class of bugs

• 60 days: own CI quality gates for at least one pod's test suite; establish baseline metrics (coverage %, flakiness rate, regression detection latency)

• 90 days: reduce bug escape rate measurably; present a test infrastructure roadmap to the team

How We Measure Success

• Bug escape rate (regressions caught in test vs. caught in production)

• Time-to-detection for regressions (commit to test failure)

• Test flakiness rate (< 2% target)

• Manual testing time eliminated via automation

• CI pipeline reliability and run time

Red Flags We Screen For

• Test suites that only cover the happy path

• No incident ownership story ("QA doesn't do oncall")

• Can't reason about failure modes, retries, or idempotency at the code level

• Treats test coverage % as the goal rather than a signal

Cannot explain the business impact of a quality gap

What We Offer

• Work on infrastructure that handles real money for millions of users

• A team that treats quality as a first-class engineering problem, not a compliance checkbox

• Competitive salary, equity, and benefits

• Remote-friendly with a distributed, high-ownership engineering culture.

Benefits

• Competitive salary and equity

• Comprehensive insurance (medical/dental/vision) — 100% covered

• Stipend for your ideal remote / WFH set-up: laptop, headphones, and any other work gear you may need

• Flexible hours and a long-standing, supportive remote environment

• Unlimited vacation: Take time when you need it (and we really mean it!)

• 401(k) retirement plan

• Wellness benefit

We strongly encourage candidates of all different backgrounds to apply. We believe that our work is stronger with a variety of perspectives, and we’re eager to further diversify our company. If you have a background that you feel would make an impact at Phantom, please consider applying. We’re committed to building an inclusive, supportive place for you to do the best work of your career.

By submitting your resume and application materials, you acknowledge and agree that Phantom may use automated tools, including AI systems, and may engage trusted third-party service providers to process your application and ensure an efficient hiring process. Phantom does not sell your information and your materials will be handled securely and in accordance with applicable data protection laws.