**Applications without 2 years of experience as a systems technician and PHP, MySQL and JavaScript developer, with B2/C1 level English, will not be considered.** **\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_** At **ONEtoONE Corporate Finance**, a leading firm in mergers and acquisitions (M\&A) advisory, technology is not just a support function—it's our engine. We have internally developed an ecosystem of tools that positions us at the forefront of the industry, and now we are looking to expand our Technology team. We are seeking a **Full Stack Development and Support Specialist** to join our team in Madrid. You will join a core technology team of two highly senior professionals—the architects of our solutions—offering a unique opportunity to learn, grow, and work on high-impact code for the business. If you are proactive, passionate about problem-solving, and have a hybrid profile combining software development and systems support, this is your opportunity. **What will your main responsibilities be?** **Software Development and Maintenance (Primary Focus \~70%):** * You will play a key role in maintaining and evolving our internal applications, ensuring their performance and stability. * You will develop new features, perform updates, and handle bug fixes on our primary technology stack: **PHP, MySQL and JavaScript (Full Stack)**. * You will collaborate directly with the senior team throughout the complete software lifecycle. **Infrastructure and User Support (\~30%):** * You will carry out comprehensive maintenance of the office’s technological infrastructure, ensuring operational continuity. * You will provide technical support to end users regarding hardware installation and configuration (PCs, printers) and resolution of daily incidents. * You will assist in administering our **Debian** servers, supporting the maintenance of services such as **Apache, Nginx and MySQL**. * You will manage basic security measures, including access control and VPN maintenance. * You will create and keep updated technical documentation for systems, procedures, and solutions. **What profile are we looking for? (Requirements)** **Essential:** * Demonstrable experience of at least 2 years in a similar role combining development and support. * **Proficiency in the technology stack: PHP, MySQL (or MariaDB), and JavaScript (Full Stack)**. It is essential that you feel comfortable working with these technologies. * Basic knowledge of **Linux system administration (preferably Debian)**. * Familiarity with configuring and maintaining web servers such as **Apache or Nginx**. * Proactive attitude, strong problem-solving ability, and excellent communication skills. * Ability to work independently while also being a collaborative member within a small and highly cohesive team. * On-site work in Madrid city center. **Highly valued:** * Experience with Node.js and/or Vibe Coding environments. * Knowledge of version control with Git. * Basic experience in network and cybersecurity management. * Familiarity with virtualization or containerization tools (e.g., Docker). * Higher Vocational Training (DAW, DAM, ASIR) or Degree in Computer Engineering. **What do we offer?** * A unique opportunity to learn and grow professionally alongside a high-performance expert team in a meritocratic environment. * Direct involvement in developing and improving technological tools critical to our business success. * A professional, dynamic work environment where your contribution will be visible and valued from day one. * Indefinite contract and a long-term stable project. * Offices located in central Madrid. * Competitive salary commensurate with your experience and qualifications. Job type: Full-time Salary: €25,000.00\-€30,000.00 per year Benefits: * Reduced working hours during summer Work Location: On-site