At **ONEtoONE Corporate Finance**, a leading firm in mergers and acquisitions (M\&A) advisory, technology is not just support—it's our engine. We've internally developed an ecosystem of tools that positions us at the forefront of the industry, and now we're looking to expand our Technology team. We are seeking a **Full Stack Development and IT Support Specialist** to join our team in Madrid. You will become part of a small team of two highly experienced professionals—the architects of our solutions—offering a unique opportunity to learn, grow, and work on high-impact business code. 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 be your main responsibilities?** **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 using our core technology stack: **PHP, MySQL, and JavaScript (Full Stack)**. * You will collaborate directly with the senior team throughout the full software development lifecycle. * **Infrastructure and User Support (\~30%):** * You will perform comprehensive maintenance of the office’s technological infrastructure, ensuring operational continuity. * You will provide technical support to end users regarding hardware setup and configuration (PCs, printers) and resolve daily technical issues. * 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 kind of candidate are we looking for? (Requirements)** **Essential:** * Proven experience of at least 2\-3 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 are 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 skills, and excellent communication abilities. * Ability to work independently while also being a collaborative member within a small and tightly-knit team. * **Highly desirable:** * Experience with Vibe Coding environments. * Experience with Node.js. * 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 a 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. * Permanent contract and a stable long-term project. * Office located in central Madrid. * Competitive salary commensurate with your experience and qualifications. **Do you think you’re the person we’re looking for?** Apply now and let’s talk! Job type: Full-time, Permanent contract Salary: €22,000.00\-€28,000.00 per year Benefits: * Reduced working hours during summer Work Location: On-site