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Jose J. LaraJJ

Jose J. Lara

Automation, AI, and Cybersecurity

€250/day
Madrid, ES
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Jose J.

I help companies and professionals save time, reduce errors, and improve the security of their digital processes through automation, API integration, applied AI, backend development, data analysis, and custom technical solutions.

I work on projects involving repetitive tasks, scattered data, manual processes, Excel/CSV/PDF sheets, manual reporting, internal tools, dashboards, bots, legal scraping, web security reviews, hardening, backups, and exposure analysis.

I can also practically integrate AI into real workflows: internal assistants, document classification and summarization, information extraction, task automation, data analysis, report generation, and connection with existing tools via APIs.

My profile combines programming, cybersecurity, pentesting, systems, and IT. I have developed advanced tools such as financial analysis infrastructure and algorithmic trading with real-time data processing, backtesting, walk-forward validation, risk metrics, commission/slippage modeling, and pipelines prepared for financial analysis and machine learning.

I also created Web Ninja, my own framework for bug bounty and security research with a web dashboard, database, direct integration with Burp Suite via a Java extension, subdomain modules, scanning, alert management, and evidence collection. Its modular design allows for adding new modules to analyze endpoints and test different types of vulnerabilities from a centralized interface.

I analyze problems, detect risks, simplify processes, and deliver useful, maintainable, and documented solutions.

Available for remote projects in Spain and Europe.

Available for occasional in-person meetings in Madrid when the project justifies it and is planned in advance.
  • Spanish

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Independent projects
    Python Automation & Security Tooling Developer
    CONSULTING AND AUDITS
    September 2024 - Today (1 year and 9 months)
    Madrid, Spain
    • Built custom Python automation tools for APIs, data processing, dashboards and internal workflows.
    • Developed Web Ninja, a modular bug bounty framework with Burp Suite integration, database backend and web dashboard.
    • Built crypto market data, backtesting and walk-forward validation infrastructure with risk and execution cost modelling.
    Python Automation API Integration Data Processing Cybersecurity
  • Bug Bounty Hunter | Python Automation & Cybersecurity
    Freelancer
    VIDEO GAMES AND ANIMATION
    September 2024 - Today (1 year and 9 months)
    Madrid, Spain
    Web application security research focused on authorized bug bounty programs and public scopes.

    I perform manual testing, reconnaissance, vulnerability validation and clear technical reporting.

    My work includes analysing authentication flows, access control issues, exposed attack surface, business logic weaknesses and misconfigurations.

    I also develop custom automation and tooling for recon, subdomain discovery, endpoint collection, evidence management and Burp Suite-assisted testing.
    Pentesting Burp Suite Web Security Python Bug Bounty
  • Wise Security Global (via Hays)
    Ethical Hacker
    BANKING AND INSURANCE
    January 2023 - August 2023 (7 months)
    Madrid, Spain
    Manual web and infrastructure pentesting across real corporate environments, including banking applications under continuous development.

    I work on vulnerability discovery, exploitation, impact analysis and remediation-focused reporting.

    My experience includes web application testing, network and service review, Active Directory-related security checks, reverse engineering with GDB and Ghidra, and practical communication with technical teams to help validate and fix security issues.
    Pentesting Cybersecurity Reverse Engineering Burp Suite Ghidra

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Education

  • Master's Specialist in Computer and Information Security
    University of Castilla-La Mancha
    2018
    Master's Specialist in Computer and Information Security
  • Certified Ethical Hacker (CEH)
    EC-Council
    2018
    Certified Ethical Hacker (CEH)

Certifications

  • Certified Ethical Hacker
    EC-Council
    2019
    https://aspen.eccouncil.org/Verify
    Ethical Hacking Burp Suite Hacking Linux Network Security Programming Cybersecurity Reverse Engineering Pentesting Ethical Hacking

Skill set

Categories