Senior Automation QA Engineer (Manual expertise) at Nix

N-iX is a global software development service company that helps businesses across the globe create next-generation software products. Founded in 2002, we unite 2,400+ tech-savvy professionals across 40+ countries, working on impactful projects for industry leaders and Fortune 500 companies. Our expertise spans cloud, data, AI/ML, embedded software, IoT, and more, driving digital transformation across finance, manufacturing, telecom, healthcare, and other industries. Join N-iX and become part of a team where your ideas make a real impact. Company Overview Our client is a leading, fully regulated US-based digital asset trading platform. They provide secure, low-latency access to cryptocurrency markets, acting as a bridge between traditional finance and the Web3 ecosystem. About This Role The Senior Software Engineer, QA is part of the Engineering team and reports to our Manager, Engineering - Blockchain. As Senior Software Engineer, QA, you will be responsible for ensuring the quality, reliability, and scalability of our blockchain products through robust testing strategies, automation, and continuous improvement of our QA processes. As Senior Software Engineer, QA you will partner with software engineers and product managers, to deliver high-quality, secure, and performant products while improving the efficiency and effectiveness of our release lifecycle. Key Responsibilities • Executing and managing test cases and results, reporting on test and defect metrics. • Estimating, prioritizing, planning and coordinating testing activities. • Identifying, recording, documenting thoroughly and track bugs. • Performing thorough regression testing when bugs are resolved. • Designing, developing and executing automation scripts using internal automation framework and system. • Developing and applying testing processes for new and existing products to meet client needs. • Acting as a strong advocate for quality in the product development and engineering process including test tooling improvements and automation. • Working with engineers to determine where the bottlenecks are in the existing release process. • Staying up-to-date with new testing tools and test strategies. Required Qualifications • Bachelor’s or Master’s degree in Computer Science or related field. • ~8 years of hands-on manual and automated testing, or ~6 with an advanced degree. • Experience working in Agile / Scrum environments with rapid iteration cycles and CI/CD-driven release processes. • Strong proficiency in Java (primary automation language, aligned with the backend stack) and/or Python. • Hands-on experience designing, building, and maintaining test automation frameworks from the ground up — not just executing pre-built scripts. • Proven experience testing across mobile (iOS / Android) and web platforms. • Hands-on with UI automation tools such as Selenium, Playwright, Cypress, Appium, XCUITest, or Espresso. • Strong API / backend testing experience — REST Assured, Postman, pytest + requests, or equivalent; including contract testing, mocking, and test data management. • Experience with performance and load testing tools (JMeter, k6, Gatling, or Locust) — including defining KPIs, running tests, and analyzing results. • Familiarity with security testing fundamentals (OWASP Top 10, XSS, CSRF, SQL injection, authentication / authorization flows). • Experience integrating automated tests into CI/CD pipelines (Jenkins, GitHub Actions, GitLab CI, or CircleCI). • Familiarity with containerization (Docker) and orchestration (Kubernetes) for spinning up test environments. • Hands-on with databases — both SQL (MySQL, PostgreSQL) and NoSQL (Redis, MongoDB) — for test data validation. • Experience with message queues / streaming systems (Kafka, RabbitMQ) and validating asynchronous data flows. • Proficiency with Git and modern source control workflows. • Experience with test management and bug tracking tools (JIRA, TestRail, Zephyr, Xray, or equivalent) and clear bug reporting practices. • Strong collaboration and communication skills, with proven ability to partner closely with developers, product managers, and DevOps engineers in a fast-paced cross-functional environment. • Self-driven, problem-solving mindset — enjoys breaking things and finding the "why," not just the "what." • Experience working in FinTech, banking, trading, or other highly regulated environments — with awareness of security and compliance best practices. • Hands-on experience or strong demonstrable interest in blockchain, crypto, or Web3 products (this role reports into the Blockchain Engineering Manager). Familiarity with concepts such as wallets, transactions, gas, confirmations, smart contracts, testnets, and on-chain data validation tools (e.g., Etherscan, block explorers) is a strong plus. We offer*: • Flexible working format - remote, office-based or flexible • A competitive salary and good compensation package • Personalized career growth • Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more) • Active tech communities with regular knowledge sharing • Education reimbursement • Memorable anniversary presents • Corporate events and team buildings • Other location-specific benefits *not applicable for freelancers