senior qa engineer

توضیحات آگهی

Wallex is a FinTech company providing a secure cryptocurrency exchange platform and digital asset payment solutions With a vision to become a leading global FinTech enterprise Wallex is recognized as one of the largest cryptocurrency exchange platforms in Iran supporting the online trading of over 130 cryptocurrencies We are seeking a Senior QA Engineer to join our Blockchain team and help ensure the reliability security and correctness of our blockchain related services and integrations In this role you will work closely with Backend Engineers Blockchain Engineers DevOps Product and other QA Engineers to validate complex systems involving blockchain networks wallets transactions deposits withdrawals and internal financial services We are looking for someone with a strong Quality Engineering background solid API and backend testing experience hands on automation skills and the ability to investigate complex blockchain related workflows at a technical level Responsibilities Design review and execute comprehensive test scenarios for blockchain related services and financial workflows Perform manual API integration regression exploratory and end to end testing across backend services and supporting applications Validate blockchain transaction flows including deposits withdrawals confirmations failed or rejected transactions pending transactions network delays reorganizations and other blockchain specific edge cases Test wallet functionality address generation transaction tracking and balance synchronization Validate integrations with blockchain nodes RPC providers third party blockchain services internal microservices and databases Verify data consistency across blockchain networks internal services databases and user balances Design implement and maintain scalable automated tests for APIs backend services integration flows and user facing functionality where applicable Write clear and maintainable test scenarios and acceptance criteria using Gherkin BDD syntax Analyze technical requirements to identify missing scenarios edge cases potential failures and quality risks before implementation Validate REST APIs RPC interfaces WebSocket based services asynchronous processes and event driven workflows Investigate staging and production issues using logs databases blockchain explorers monitoring tools and service responses Reproduce complex defects and provide engineers with detailed technical information to support root cause analysis and debugging Participate in code reviews and test reviews from a quality and testability perspective Review test coverage before releases and ensure critical blockchain and financial scenarios are properly validated Contribute to CI CD pipelines automated quality gates and the stability and maintainability of the automation suite Collaborate with engineering teams to improve system observability testability and overall software quality Mentor other QA Engineers and contribute to defining QA standards and best practices within the team Requirements Strong professional experience in Software Quality Assurance or Quality Engineering Strong hands on experience with API and backend testing Good understanding of REST APIs HTTP JSON authentication mechanisms status codes headers and client server architecture Hands on experience with API testing tools such as Postman Swagger OpenAPI tools or equivalent solutions Experience designing and implementing test automation using at least one programming or scripting language Experience with UI automation tools such as Selenium Playwright Cypress or similar frameworks Ability to design maintainable reusable and scalable automated test suites Experience writing test scenarios and acceptance criteria using Gherkin BDD Strong knowledge of functional integration regression exploratory and end to end testing Good understanding of asynchronous systems distributed architectures and event driven workflows Experience validating data using SQL databases and backend systems Experience with Git CI CD pipelines and modern software development workflows Ability to independently investigate complex technical issues and identify root causes Strong analytical thinking attention to detail communication and cross functional collaboration skills Good understanding of blockchain fundamentals including transaction lifecycle blocks and confirmations wallets and addresses network fees nodes and RPC interfaces Mainnet and Testnet environments token and native asset transfers transaction hashes and blockchain explorers Understanding of pending confirmed failed and dropped transactions as well as blockchain network latency and temporary consistency issues Conceptual understanding of public and private keys and the ability to investigate blockchain related issues without requiring deep blockchain development experience Nice to Have Previous experience working with cryptocurrency exchanges FinTech platforms wallets or blockchain products Experience testing integrations with networks such as Bitcoin Ethereum TRON or similar blockchains Experience working directly with blockchain RPC APIs and familiarity with Web3 concepts and tools Experience with TypeScript JavaScript or Node js for test automation Experience with Selenium Playwright Jest or similar testing frameworks Experience testing microservice based asynchronous and event driven systems Familiarity with message brokers such as Kafka or RabbitMQ Experience with Redis or NoSQL databases Familiarity with Docker and Kubernetes Experience with performance and load testing Familiarity with monitoring and observability tools such as Grafana Kibana or similar platforms Basic understanding of smart contracts and token standards such as ERC 20 We build not watch This is where you belong تهران تهران عباس آباد بهشتی تمام وقت گروه والکس کارشناس ارشد جنسیت تفاوتی ندارد سرمایه گذاری و مالی