Job description
We’re not hiring for a specific programming language — we’re hiring for expertise in web scraping and browser automation.
Key Responsibilities
Browser Automation
- 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.
- Knowledge in bot adaptability and resilience measures
Web Scraping & Data Extraction
- 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.
Code Scalability, Maintenance & Architecture
- Write clean, modular code following SOLID principles and clean architecture.
- Bonus if you’re familiar with Hexagonal Architecture, DDD, or CQRS.
Infrastructure & DevOps
- Work with containerized environments using Docker.
- Familiarity with AWS stack service (EC2,Lambda,S3,ECS,ECR,SQS) is a plus.
Collaboration & Growth
- Strong problem-solving and debugging skills under tight deadlines.
- A mindset of continuous learning and keeping up with industry trends.
- Agile methodologies like Scrum knowledge is a plus
Whether you come from a Python background using Scrapy, Selenium or Playwright, or you’re deep into JavaScript and Puppeteer, what truly matters is your ability to navigate the complexities of dynamic web data extraction and automation.
That said, we do work primarily with Puppeteer, and most of our scraping infrastructure runs on Node.js — so strong JavaScript knowledge is highly preferred and will give you a faster ramp-up.
Also, having some basic familiarity with PHP (we use it in parts of our BackOffice) would be a small bonus — but it’s absolutely not a requirement and won’t be a dealbreaker at all.
Nice to Have
- Experience with NoSQL databases: Redis, Elasticsearch/OpenSearch.
- Knowledge of async messaging tools like RabbitMQ.
- Additional Backend languages: PHP, Python or TypeScript.
Why should you join us?
Growth and career development
- At Leadtech, we prioritize your growth. Enjoy a flexible career path with personalized internal training and an annual budget for external learning opportunities.
Work-Life balance
- Benefit from a 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. Enjoy free Friday afternoons with a 7-hour workday, plus a 35-hour workweek in July and August so you can savor summer!
Comprehensive 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!
Unique Perks
- If you wish to come, in our office in Barcelona you’ll find it coplete with free coffee, fresh fruit, snacks, a game room, and a rooftop terrace with stunning Mediterranean views.
- Additional benefits include ticket restaurant and nursery vouchers, paid directly from your gross salary.
Join us in an environment where you’re free to innovate, learn, and grow alongside passionate professionals. At Leadtech, you’ll tackle exciting challenges and be part of a vibrant team dedicated to delivering exceptional user experiences
Equal Employment Opportunity Employer:
Leadtech is an Equal Employment Opportunity (EEO) Employer, which means we encourage applications from people with different backgrounds, interests, and personal circumstances. Our team welcomes applicants regardless of their race, gender, age, religion, nationality, sexual orientation, and/or disabilities. All we need is your high energy, skills, and willingness to be a part of a great project!
Location
You’ll have the flexibility to choose whether you’d like to come to the office every day, from time to time, or work fully remote. We want you to find the best combination for you.
If you prefer to be surrounded with amazing people, our exceptional office is in Barcelona’s Blue Building, located right on the city’s seafront. Besides our stunning views, you’ll enjoy our office perks such as free fruit, snacks, and coffee and you’ll also be able to take part in our Mario Kart and table tennis competitions.
The personal data you provide will be processed in order to manage your candidacy for the corporate selection processes that fit your profile. If you wish, you can exercise your rights of access, rectification or cancellation by writing to our address (Avenida Litoral, 12-14, 5ta planta. Barcelona. 08005) or to the email address [email protected], attaching to your request a document that can validate your identity.
