Senior Software Engineer, Core team at SE Ranking

<h2><strong>Duties and Responsibilities</strong></h2> <ul> <li>The development and long-term maintenance of web <strong>crawlers and scrapers </strong>— this will be the <strong>primary and strategic focus</strong> of the role</li> <li>Design, write, and maintain high-quality, efficient, and maintainable code in accordance with team standards and best practices</li> <li>Analyze, optimize, and significantly improve existing functionality with an eye toward performance, scalability, and reliability</li> <li>Drive technical decisions, evaluate trade-offs, and introduce new technologies and approaches when appropriate</li> <li>Solve complex, non-standard problems and take a proactive role in defining robust technical solutions</li> <li>Collaborate closely with other engineers, share expertise, and contribute to improving overall engineering quality</li> </ul> <h2><strong>Skills and Experience</strong></h2> <ul> <li>Proven experience building and maintaining production-grade web crawlers, scrapers, and parsers (HTML parsing, HTTP protocol internals, and 'polite' scraping principles: understanding real-user behavior and smart navigation, deep knowledge of what is perceived as aggressive bot crawling behavior by sites/Cloudflare-like firewalls to avoid this behavior and being efficient in getting data at the same time)</li> <li>7+ years of professional software development experience, including work on complex production systems</li> <li>Deep understanding of browser internals and lifecycle: мulti-process architecture (Browser, Renderer, GPU); сritical Rendering Path, page lifecycle events, and performance timings; сlient-side storage (Cookies, LocalStorage, IndexedDB) and caching strategies.</li> <li>Deep understanding of modern software development principles, architectural patterns, and best practices</li> <li>Experience containerizing and deploying applications using Docker</li> <li>Linux background and confidence writing and maintaining scripts in Linux environments</li> <li>Strong feedback skills and the ability to contribute constructively to code reviews.</li> <li>Ability to work effectively with incomplete or ambiguous requirements.</li> <li>Proactivity: The ability to foresee and mitigate potential issues before they escalate into incidents.</li> </ul> <h2><strong>Nice to Have</strong></h2> <ul> <li>Experience designing or working with high-load systems and large-scale data processing</li> <li>Hands-on experience with browser automation libraries: Puppeteer, Playwright, Selenium and others</li> <li>Experience with Kubernetes (k8s) in production environments</li> <li>Python skills (used for tooling, data processing, or scraping)</li> <li>Experience with TypeScript</li> <li>Familiarity with Redis</li> </ul> <h2>What we offer</h2> <ul> <li>22 days of paid time off, plus your local national holidays</li> <li>Flexible work hours and a culture that trusts you to manage your time</li> <li>Private medical insurance or a medical allowance (depending on your location)</li> <li>Extended paid sick leave so you can fully recover without worry</li> <li>Career map with growth opportunities</li> <li data-stringify-indent="0" data-stringify-border="0">Support for wellbeing and L&amp;D</li> <li>Best hardware for your work (team Apple)</li> <li>An award-winning product loved by thousands of customers worldwide</li> <li>A transparent, flexible culture with people at the core of everything we do</li> <li>Events that are actually fun</li> </ul>