---
title: 'AI-Driven Software Engineer (Node.js & C++) at arsys EN'
canonical: 'https://feeny.ai/job/ai-driven-software-engineer-node-js-c-arsys-en-valencia-apn51hd5xz1z'
type: 'job'
last_seen: '2026-09-06'
---

# AI-Driven Software Engineer (Node.js & C++) at arsys EN

- **Company:** arsys EN
- **Location:** Valencia, Spain
- **Posted:** 2026-04-28
- **Last confirmed live:** 2026-09-06
- **Apply:** https://job-boards.eu.greenhouse.io/arsys/jobs/4853201101

## Job description

We offer you the opportunity to join the leading Spanish company in the IT sector, with more than 25 years of experience and one of the most solid track records as a provider of technological solutions for companies.

We are a growing company with more than 400 employees and offices in Logroño, Madrid, Barcelona, Seville, Bilbao and Valencia.

Since August 2013, we have been part of the IONOS Group, Europe's leading digitalisation partner for small and medium-sized companies.

In short, we are a multicultural team that’s passionate about technology, bringing our professional experience from over a dozen countries: Germany, Argentina, Spain, the United States, France, the Philippines, Italy, Poland, Portugal, the United Kingdom, Romania...

Mission

Act as the execution engine of the team, transforming architectural specifications into robust, efficient, and production-ready code. You will work on building and optimizing a hybrid Node.js–C++ system, leveraging AI tools as a key accelerator to maximize development speed without compromising quality.

Responsibilities:

- Develop backend components in Node.js and high-performance integrations with C++
- Translate technical specifications into functional solutions and accurately
- Use AI tools to accelerate development, validation, and code improvement
- Apply test-driven approaches to ensure robustness and stability
- Manage and optimize build environments (Docker, Make, CMake)
- Analyze system performance and identify bottlenecks, especially in Node.js ↔ C++ interactions
- Refactor legacy code into clean, maintainable, and high-performance solutions
- Collaborate closely with architecture roles to continuously improve the system

## Requirements

Technical:

- Strong experience with Node.js development
- Ability to read, understand, and debug C++ code
- Experience working in Linux environments
- Familiarity with build tools and containers (Docker, Make, CMake)

AI & Development:

- Hands-on experience with AI-assisted development tools (e.g., Cursor, Claude, or similar)
- Ability to use AI as a productivity multiplier in software development
- Experience with iterative development, testing, and validation workflows

Profile:

- Strong English communication skills, as you will be working in an international team
- Execution-driven mindset with strong focus on quality and results
- Comfortable working in fast-paced environments
- Strong interest in performance optimization and continuous improvement

What We Offer:

- Hybrid work model (in any of our offices in Alcobendas, Valencia, Barcelona, Sevilla, or Logroño)
- Flexible working hours
- Flexible compensation package
- Discounts on Arsys products
- Discounts on technology brands
- Challenging technical environment with real high-performance system problems
- Access to advanced AI tools with no usage restrictions
- Close collaboration with senior profiles and a strong culture of continuous improvement
- Personalized training and development plans
- Biannual team events

## About arsys EN

## Company Overview
- **One-liner**: Arsys is Spain’s leading provider of web hosting, cloud infrastructure, and digital presence solutions for businesses and professionals, and is a subsidiary of the IONOS Group.
- **Entity Type**: Private (subsidiary of IONOS Group, which is part of publicly traded United Internet AG).
- **Headquarters**: Logroño, Spain, with additional offices in Madrid, Barcelona, Seville, Bilbao, and Valencia.
- **Founded**: 1996 (based on company history references) [arsys.net](https://www.arsys.net/about)
- **Founders**: Not publicly available

## Core Business
- **Primary industry**: IT services, web hosting, cloud computing, and managed infrastructure.
- **Target customers**: B2B – small and medium businesses (SMBs) and enterprises seeking digital transformation, web presence, and cloud solutions.
- **Mission or purpose statement**: “Drive digital transformation and provide businesses with access to the full benefits of the Cloud.” [arsys.net](https://www.arsys.net/about)

## Products & Services
- **Domain Registration & Email**: Domain name registration and professional email hosting.
- **Web Hosting & Online Shops**: Shared hosting, CMS hosting, and e-commerce platforms.
- **Managed Hosting**: Fully managed server solutions with support and maintenance.
- **Cloud Infrastructure (Public/Private/Hybrid)**: Flexible cloud servers, virtual desktops, storage, backups, and custom architecture design.
- **ICT Solutions**: Enterprise services including teleworking projects, SAP deployments, managed security, and custom cloud migrations. [arsys.net](https://www.arsys.net/)

## Market Standing
- **Valuation/Market Cap**: Not disclosed (subsidiary, parent IONOS Group is part of United Internet AG).
- **Key Metric**: Total Funding – N/A; Annual Revenue – Not publicly available; however the company reports **1.2 million active services** and **over 250,000 clients**. [arsys.net](https://www.arsys.net/)
- **Notable Investors/Partners**: IONOS Group (Europe’s leading digitalisation partner for SMBs), United Internet AG. Since August 2013 Arsys has been part of IONOS. [arsys.net](https://www.arsys.net/about)
- **Growth Signals**: 400+ employees; offices in six Spanish cities; 30 years of operation; 36% of staff dedicated to 24/7 customer support resolving 620,000+ queries per year; data centres powered by 100% renewable energy; ISO 50001, 14001, 9001, 27001, and Tier III certified. [arsys.net](https://www.arsys.net/about/team) | [united-internet.de](https://www.united-internet.de/en/brands/arsys.html)

## Competitive Advantages
- **Own data centres in Spain**: Two advanced facilities (main in Logroño, 6,000 m²) with 100% renewable energy, high energy efficiency, and Tier III reliability.
- **Localised 24/7 support**: Multichannel customer service (phone, chat, social, client area) delivered in Spanish from Spain.
- **Comprehensive compliance**: ISO 9001, ISO 27001, National Security Framework (ENS) certifications.
- **Strong track record**: Pioneer in European cloud hosting since 2010; part of IONOS Group with global reach (32 data centres worldwide).
- **Sustainability commitment**: Ongoing carbon footprint reduction, green IT practices. [arsys.net](https://www.arsys.net/) | [united-internet.de](https://www.united-internet.de/en/brands/arsys.html)

## Strategic Focus
- Drive digital transformation for SMBs through customised cloud migrations, managed security, and scalable infrastructure.
- Continue investing in innovation, renewable energy, and green IT to differentiate in the hosting market.
- Expand managed services and enterprise-level solutions (SAP deployments, teleworking platforms) while maintaining strong local support.

## Why Work Here
- **Culture**: Multicultural team of over 400 employees from a dozen countries (Spain, Germany, USA, UK, France, Italy, Argentina, etc.). Average age is 34 – a mix of experienced professionals and young talent. [arsys.net](https://www.arsys.net/about/team)
- **Work Environment**: Passionate about technology, with a focus on continuous learning and professional development. Offices in Logroño, Madrid, Barcelona, Seville, Bilbao, and Valencia.
- **Remote/Hybrid Policy**: Not explicitly stated; current job listings specify office locations (Alcobendas, Valencia, Logroño, Barcelona, Seville), suggesting on-site or hybrid presence. [job-boards.greenhouse.io](http://job-boards.eu.greenhouse.io/arsys)
- **Notable Perks**: 24/7 customer service exposure, hands-on work with cutting-edge cloud and Linux platforms, career growth within IONOS Group, and commitment to sustainability.

## Sources
1. [arsys.net](https://www.arsys.net/)
2. [arsys.net/about](https://www.arsys.net/about)
3. [arsys.net/about/team](https://www.arsys.net/about/team)
4. [job-boards.greenhouse.io](http://job-boards.eu.greenhouse.io/arsys)
5. [united-internet.de](https://www.united-internet.de/en/brands/arsys.html)

## Other roles at arsys EN

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- [Linux/Unix System Engineer](https://feeny.ai/job/linux-unix-system-engineer-arsys-en-alcobendas-2xs42z1hjbz9) — Alcobendas, Spain
- [Staff DevOPS Engineer (f/m/d) (EN)](https://feeny.ai/job/staff-devops-engineer-f-m-d-en-arsys-en-logrono-5885gty3rskf) — Logroño, Spain
- [Staff DevOPS Engineer (f/m/d) (EN)](https://feeny.ai/job/staff-devops-engineer-f-m-d-en-arsys-en-valencia-y9z3k8rap7k8) — Valencia, Spain
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- [AI-Driven Software Engineer (Node.js & C++)](https://feeny.ai/job/ai-driven-software-engineer-node-js-c-arsys-en-logrono-ag68nea2m03z) — Logroño, Spain
- [AI-Driven Software Engineer (Node.js & C++)](https://feeny.ai/job/ai-driven-software-engineer-node-js-c-arsys-en-alcobendas-r0e1n5shr5vx) — Alcobendas, Spain
- [Commercial General Manager (f/m/d)](https://feeny.ai/job/commercial-general-manager-f-m-d-arsys-en-logrono-qk95wexb7kgt) — Logroño, Spain