Scraping & Automation Developer

Summary

Join Leadtech, a company that prioritizes growth and work-life balance, offering a flexible career path with personalized training and an annual budget for external learning. This role focuses on web scraping and browser automation expertise, not a specific programming language. You will design and implement robust automation flows, develop high-performance web scrapers, and write clean, modular code. Strong JavaScript knowledge is highly preferred, while familiarity with PHP and NoSQL databases is a plus. Leadtech provides competitive salaries, full-time permanent contracts, top-tier private health insurance, flexible schedules, and unique perks like a Barcelona office with stunning views and free amenities.

Requirements

• Strong JavaScript knowledge
• Experience in web scraping and browser automation
• Knowledge in bot adaptability and resilience measures

Responsibilities

• Design and implement robust automation flows using Puppeteer, Selenium, or Playwright
• Simulate real user interactions: mouse movements, clicks, scrolling, keyboard input, drag-and-drop, and more
• Automate authentication workflows, including handling login forms, multi-factor authentication (2FA), token-based systems, and session persistence
• Handle navigation across multi-step processes, complex flows, and conditional branching in UI behavior
• Manage browser contexts, incognito modes, and session isolation for concurrent scraping tasks
• Optimize automation speed and reliability by managing network throttling, timeouts, and request interception
• Use request/response interception to modify payloads, inject headers or capture API data mid-session
• Debug and trace issues in automation flows using built-in tools (e.g., Chrome DevTools Protocol) and custom logging
• Develop high-performance web scrapers for static and dynamic websites, with focus on modularity and reuse
• Analyze and interpret complex HTML structures, including nested elements, tables, and non-semantic markup
• Handle dynamic behaviors like infinite scroll, AJAX-loaded content, delayed rendering, and embedded frames (iframes)
• Implement resilient scraping strategies for sites with frequent structural changes
• Work with structured (JSON, XML) and unstructured data, including cleaning, parsing, and transforming it into usable formats
• Handle cookies, session storage, and authentication headers to maintain access to gated content
• Build scrapers that are production-ready, fault-tolerant, and easy to debug and monitor
• Write clean, modular code following SOLID principles and clean architecture
• Work with containerized environments using Docker
• Strong problem-solving and debugging skills under tight deadlines
• A mindset of continuous learning and keeping up with industry trends

Preferred Qualifications

• Familiarity with Puppeteer, Selenium, or Playwright
• Experience with NoSQL databases: Redis, Elasticsearch/OpenSearch
• Knowledge of async messaging tools like RabbitMQ
• Additional Backend languages: PHP, Python or TypeScript
• Familiarity with AWS stack service (EC2,Lambda,S3,ECS,ECR,SQS)
• Agile methodologies like Scrum knowledge

Benefits

• Competitive salary, full-time permanent contract, and top-tier private health insurance (including dental and psychological services)
• 25 days of vacation plus your birthday off, with flexible vacation options—no blackout days!
• Flexible schedule with flextime (7 - 9:30 a.m. start, 3:30 - 6 p.m. end) and the option of working full remote or from our Barcelona office
• Free Friday afternoons with a 7-hour workday, plus a 35-hour workweek in July and August
• Free coffee, fresh fruit, snacks, a game room, and a rooftop terrace with stunning Mediterranean views
• Ticket restaurant and nursery vouchers, paid directly from your gross salary