Senior QA Engineer (Financial Apps)

Visa Hunt; Poland; On-site; PLN 298,000 - 447,000; Full time

Job summary

Fireblocks is seeking a quality-focused QA engineer who can own end-to-end quality, combining thorough manual testing with automation across full-stack Web3 flows. You will leverage AI tools to accelerate coverage and velocity, while digging into logs (Datadog, Sentry) to isolate root causes. The role blends testing with a product mindset and collaboration with engineering teams.

You will design tests, execute plans, and contribute to automation efforts in a fast-paced, crypto-driven environment.

Qualifications

• 3+ years in Manual QA with hands-on automation across the full stack, TypeScript preferred.
• Solid grasp of blockchain fundamentals, transaction lifecycle, and DeFi concepts like staking and bridging.
• AI-native approach, using AI tools daily to move faster and solve complex errors.
• Fast learner who thrives in a rapidly changing crypto/FinTech environment.
• Data-driven debugger who analyzes logs and monitoring outputs to root cause issues.

Responsibilities

• Own the quality of the product end-to-end, analyzing specs and suggesting improvements.
• Design and execute thorough manual test plans across complex financial and Web3 flows.
• Leverage AI agents to accelerate workflow, expand coverage, and ship faster without sacrificing depth.
• Dive into logs/monitoring tools (Datadog/Sentry) to understand failures and root causes.
• Contribute to automation across backend APIs and frontend interfaces in a fast-paced setting.
• Collaborate with product teams, acting as an engineer with a product mindset.

Skills

Manual QA

Automation

TypeScript

Exploratory testing

Tools

Datadog

Sentry

Job description

Fireblocks is the company bringing global finance onchain. Backed by over $1 billion in capital, we are the premier digital asset infrastructure provider trusted by thousands of industry-defining financial institutions, including banks, payment providers, fintechs, and global corporates such as BNY Mellon, BNP Paribas, ANZ Bank, Western Union, Stripe, and Revolut. Built for institutional scale and security, our enterprise-grade platform and network have powered over $14 trillion in digital asset transfers worldwide.

About Fireblocks

Fireblocks is the institutional standard for digital asset security and settlement. We enable banks, fintechs, and exchanges—like BNY Mellon, Revolut, and ANZ—to securely navigate the blockchain economy. Our platform and network provide the simplest and most secure way for companies to work with digital assets.

The Mission: Quality

The Financial Apps unit builds the critical infrastructure that connects institutions to the digital asset economy. Our products cover everything from staking and yield to on-ramps, exchange integrations, and Web3 connectivity (e.g. WalletConnect).

In this role, you'll manually test all flows that need validation, and contribute to building out our automation the rest of the time. We need someone who treats quality as a holistic product challenge, takes pride in rigorous manual testing, and is eager to help grow our automation—using AI to move faster at every stage.

What You'll Do

• Holistic Quality Ownership: You own the quality of the product end-to-end. You don't just test against a spec; you analyze the spec, find the logical gaps, and suggest improvements to ensure a better final product.
• Hands-On Manual QA: You design and execute thorough manual test plans across complex financial and Web3 flows.
• AI-Powered Velocity: You leverage AI agents (e.g., Claude Code) to accelerate your workflow, expand coverage, and ship faster without sacrificing depth.
• Deep-Dive Analysis: You are comfortable digging into logs and monitoring tools (Datadog/Sentry) to understand why something broke. You aren't afraid to get your hands dirty in the backend to find the root cause.
• Contribute to Automation: When you're not running manual flows, you help build and maintain automation across backend APIs and frontend interfaces in a fast-paced environment.
• Product Partnership: You don't see yourself as "just a tester." You are an engineer with a product mindset who actively works to improve the systems you are checking.

Who You Are
You take real pride in finding what others miss — exploratory testing and edge-case hunting genuinely excite you, and you'd rather break something today than let a user break it tomorrow. You do both automation and manual testing, and treat both as core parts of the role.

• 3+ years in Manual QAwith hands-on automation experience across the full stack (TypeScript preferred).
• Solid grasp of blockchain fundamentals, the transaction lifecycle, and DeFi logic like staking and bridging.
• AI-native - you already use AI tools daily to move faster and cut through complex errors.
• Fast learner - new domains don't slow you down; you keep pace in an industry that moves at the speed of crypto.
• Data-driven debugger - when something breaks, logs are your first move, not your last resort.

Fireblocks's mission is to enable every business to easily and securely access digital assets and cryptocurrencies. In order to do that, we strongly believeour workforce should be as diverse as our clients, and this is why weembrace diversity and inclusion in all its forms.

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