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Principal Software Engineer (worldwide remote, work anywhere)
Location
Spain
Posted
69 days ago
Salary
0
Seniority
Lead
Job Description
Principal Software Engineer (worldwide remote, work anywhere)
CloudLinux
CloudLinux is a global remote-first company. We are driven by our principles: do the right thing, employees first, we are remote first, and we deliver high-volume, low-cost Linux infrastructure and security products that help companies to increase the efficiency of their operations. Every person on our team supports each other and does what we can to ensure we all are successful. Check out our website for more information https://cloudlinux.com/ Imunify360 Security Suite is a product of CloudLinux Inc., the maker of the #1 OS in security and stability for hosting providers. Imunify is an innovative security solution designed specifically for shared and VPS/Dedicated servers. The automated, easy-to-use solution with the six-layer approach to security delivers comprehensive and complete attack prevention. We are seeking an experienced Principal Software Engineer for the Imunify360 IDS/IPS team. The team is responsible for Imunify360's web traffic security layer — the system that intercepts, classifies, and acts on every HTTP request before it reaches a web server. We work at the intersection of Linux networking, WAF engineering, and high-performance systems. Every engineer on the team owns features end-to-end — from product spec through implementation and production validation. There's no backlog of tickets to execute. There are problems to solve and outcomes to own. What You'll Work On The IDS/IPS team sits at the critical path of every web request Imunify360 handles. You'll work on hard, high-stakes problems — traffic classification, protocol-level enforcement, WAF evolution, performance at hosting scale — where the decisions you make affect millions of sites. The work is technically deep and product-relevant. You'll be expected to understand not just how to build something, but why it matters and what success looks like. How We Work We work AI-natively. That means using AI tools throughout the full engineering cycle: brainstorming approaches, writing specs, reviewing design decisions, generating and validating code. We expect every engineer to know how to get the most out of these tools — not as a shortcut, but as a force multiplier that lets one person deliver what used to take a team. If you're used to picking up tickets and closing them, this role isn't a fit. If you're used to owning outcomes and using every tool available to deliver them — including AI — we'd like to talk. Key Responsibilities: - Own features end-to-end: define the problem, shape the solution, ship it, validate it works - Architect server-side systems with a strong focus on performance, correctness, and operational simplicity - Write behaviour specs before implementation — define what "done" looks like in machine-verifiable terms before generating a line of code - Lead design and code reviews that raise the technical bar across the team - Identify and drive improvements to team processes, tooling, and engineering practices - Conduct root cause analysis on complex production issues — go deep, fix the right thing
Job Requirements
- Must have:
- 8 years of progressive experience in software development
- Fluency with AI-assisted development workflows — you use AI tools to brainstorm, spec, implement, and validate; this is how we work, not a nice-to-have
- Go — strong, production-proven proficiency; this is your primary language
- Hands-on experience with Linux in production environments (CentOS, Debian, or similar), particularly with the network stack
- Experience with BDD or similar behaviour-driven approaches to defining and validating software
- Product mindset: you think in outcomes, not in tasks
- Nice to have:
- Python, C, or Rust — familiarity or working experience is a strong plus
- Knowledge of network and web security (WAF, IDS/IPS, traffic analysis)
- Experience building AI-powered features or integrating ML into production systems
- Familiarity with hosting environments (cPanel, Plesk, nginx, Apache)
Benefits
- What's in it for you?
- A focus on professional development.
- Interesting and challenging projects.
- Fully remote work with flexible working hours, that allows you to schedule your day and work from any location worldwide.
- Paid 24 days of vacation per year, 10 days of national holidays, and unlimited sick leaves.
- Compensation for private medical insurance.
- Co-working and gym/sports reimbursement.
- Budget for education.
- The opportunity to receive a reward for the most innovative idea that the company can patent.
- By applying for this position, you consent to the processing of your personal data as described in our Privacy Policy (https://cloudlinux.com/candidate-privacy-notice), which provides detailed information on how we maintain and handle your data.
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CloudLinux is a global remote-first company. We are driven by our principles: do the right thing, employees first, we are remote first, and we deliver high-volume, low-cost Linux infrastructure and security products that help companies to increase the efficiency of their operations. Every person on our team supports each other and does what we can to ensure we all are successful. Check out our website for more information https://cloudlinux.com/ Imunify360 Security Suite is a product of CloudLinux Inc., the maker of the #1 OS in security and stability for hosting providers. Imunify is an innovative security solution designed specifically for shared and VPS/Dedicated servers. The automated, easy-to-use solution with the six-layer approach to security delivers comprehensive and complete attack prevention. We are seeking an experienced Principal Software Engineer for the Imunify360 IDS/IPS team. The team is responsible for Imunify360's web traffic security layer — the system that intercepts, classifies, and acts on every HTTP request before it reaches a web server. We work at the intersection of Linux networking, WAF engineering, and high-performance systems. Every engineer on the team owns features end-to-end — from product spec through implementation and production validation. There's no backlog of tickets to execute. There are problems to solve and outcomes to own. What You'll Work On The IDS/IPS team sits at the critical path of every web request Imunify360 handles. You'll work on hard, high-stakes problems — traffic classification, protocol-level enforcement, WAF evolution, performance at hosting scale — where the decisions you make affect millions of sites. The work is technically deep and product-relevant. You'll be expected to understand not just how to build something, but why it matters and what success looks like. How We Work We work AI-natively. That means using AI tools throughout the full engineering cycle: brainstorming approaches, writing specs, reviewing design decisions, generating and validating code. We expect every engineer to know how to get the most out of these tools — not as a shortcut, but as a force multiplier that lets one person deliver what used to take a team. If you're used to picking up tickets and closing them, this role isn't a fit. If you're used to owning outcomes and using every tool available to deliver them — including AI — we'd like to talk. Key Responsibilities: - Own features end-to-end: define the problem, shape the solution, ship it, validate it works - Architect server-side systems with a strong focus on performance, correctness, and operational simplicity - Write behaviour specs before implementation — define what "done" looks like in machine-verifiable terms before generating a line of code - Lead design and code reviews that raise the technical bar across the team - Identify and drive improvements to team processes, tooling, and engineering practices - Conduct root cause analysis on complex production issues — go deep, fix the right thing
CloudLinux is a global remote-first company. We are driven by our principles: do the right thing, employees first, we are remote first, and we deliver high-volume, low-cost Linux infrastructure and security products that help companies to increase the efficiency of their operations. Every person on our team supports each other and does what we can to ensure we all are successful. Check out our website for more information https://cloudlinux.com/ Imunify360 Security Suite is a product of CloudLinux Inc., the maker of the #1 OS in security and stability for hosting providers. Imunify is an innovative security solution designed specifically for shared and VPS/Dedicated servers. The automated, easy-to-use solution with the six-layer approach to security delivers comprehensive and complete attack prevention. We are seeking an experienced Principal Software Engineer for the Imunify360 IDS/IPS team. The team is responsible for Imunify360's web traffic security layer — the system that intercepts, classifies, and acts on every HTTP request before it reaches a web server. We work at the intersection of Linux networking, WAF engineering, and high-performance systems. Every engineer on the team owns features end-to-end — from product spec through implementation and production validation. There's no backlog of tickets to execute. There are problems to solve and outcomes to own. What You'll Work On The IDS/IPS team sits at the critical path of every web request Imunify360 handles. You'll work on hard, high-stakes problems — traffic classification, protocol-level enforcement, WAF evolution, performance at hosting scale — where the decisions you make affect millions of sites. The work is technically deep and product-relevant. You'll be expected to understand not just how to build something, but why it matters and what success looks like. How We Work We work AI-natively. That means using AI tools throughout the full engineering cycle: brainstorming approaches, writing specs, reviewing design decisions, generating and validating code. We expect every engineer to know how to get the most out of these tools — not as a shortcut, but as a force multiplier that lets one person deliver what used to take a team. If you're used to picking up tickets and closing them, this role isn't a fit. If you're used to owning outcomes and using every tool available to deliver them — including AI — we'd like to talk. Key Responsibilities: - Own features end-to-end: define the problem, shape the solution, ship it, validate it works - Architect server-side systems with a strong focus on performance, correctness, and operational simplicity - Write behaviour specs before implementation — define what "done" looks like in machine-verifiable terms before generating a line of code - Lead design and code reviews that raise the technical bar across the team - Identify and drive improvements to team processes, tooling, and engineering practices - Conduct root cause analysis on complex production issues — go deep, fix the right thing
• Build and maintain automated reports for funnels, paid media, subscriptions, and customer service • Develop and document clear SOPs for reporting processes • Set up and maintain integrations across customer databases • Analyze data trends to identify what’s working and where improvements can be made • Troubleshoot and improve existing dashboards and reporting systems • Building and managing subscription & paid advertising data
Founding Software Engineer, KI-Startup Köln, m/w/d
BestandsfaktorBestandsfaktor ist kein klassisches Tool und keine isolierte Kampagnenlösung, sondern ein strategisches Bestandsentwicklungs-System für Versicherungsmakler. Der Kerngedanke ist, den Bestand nicht als etwas zu Verwaltendes zu sehen, sondern als zentralen Vermögenswert, der systematisch entwickelt, veredelt und im Unternehmenswert gesteigert werden kann.
Wir suchen keinen CTO Engineer für ein Setup, in dem du Tickets verwaltest, Legacy pflegst oder in endlosen Abstimmungsschleifen hängst. Wir suchen jemanden, der Lust hat, ein relevantes Produkt fast von Grund auf technisch mit aufzubauen und dabei echte Gestaltungsfreiheit zu haben. Bei Bestandsfaktor entsteht gerade eine Plattform, die operative Prozesse, intelligente Routing-Logiken, Datenmodelle, Automatisierung und AI-gestützte Produktentwicklung zusammendenkt. Für dich heißt das: keine enge Box, kein enges Korsett, keine Rolle als „Lead Developer im bestehenden Organigramm“ sondern die Chance, Architektur, Produktlogik und technische Standards maßgeblich selbst zu prägen. Wenn du Spaß daran hast, technische Systeme mit echtem Hebel zu bauen, schnelle Entscheidungen zu treffen und Verantwortung nicht nur für Code, sondern für das gesamte Produkt zu übernehmen, dann könnte das hier sehr gut passen. Aufgaben - Die technische Gesamtarchitektur von Bestandsfaktor entwickeln und verantworten - Zentrale Systemlogiken für Daten, Trigger, Automatisierung und Routing entwerfen - Die Plattform so bauen, dass sie schnell weiterentwickelt werden kann, ohne im Chaos zu enden - Technische Entscheidungen mit starkem Produktbezug treffen statt nur Anforderungen umzusetzen - Gemeinsam mit dem Gründerteam herausarbeiten, welche technischen Hebel den größten Impact haben - Externe Entwickler oder Freelancer technisch führen und Qualitätsstandards setzen - Eine moderne, pragmatische Entwicklungsumgebung mit KI-gestützten Workflows, hoher Geschwindigkeit und klarem Qualitätsanspruch aufbauen - Die technische Grundlage für ein System schaffen, das skalierbar, robust und strategisch wertvoll ist Qualifikation Wichtig: - Du willst nicht nur entwickeln, sondern ein Produkt technisch wirklich mitbesitzen - Du hast starke Fähigkeiten in Architektur, Systemdesign und pragmatischer Produktentwicklung - Du kannst komplexe Anforderungen in klare, elegante technische Lösungen übersetzen - Du denkst in Systemen, nicht nur in Features - Du arbeitest eigenständig, strukturiert und mit hohem Qualitätsanspruch - Du hast Lust auf Tempo, Verantwortung und sichtbaren Impact - Du kannst zwischen langfristiger technischer Stabilität und kurzfristiger Umsetzungsstärke sauber abwägen - Du brauchst kein großes Unternehmen um dich herum, um stark zu performen Nice-to-have: - Erfahrung mit Plattformprodukten, Automatisierungssystemen oder datengetriebenen SaaS-Lösungen - Erfahrung mit API-first-Architekturen, Integrationen und skalierbaren Backend-Strukturen - Erfahrung darin, kleine, leistungsstarke Tech-Setups aufzubauen - Interesse an AI-gestützter Softwareentwicklung und modernen Produkt-Workflows - Freude daran, in einem Umfeld mit viel Freiheitsgrad und wenig unnötiger Bürokratie zu arbeiten Benefits - Sehr hoher technischer Gestaltungsspielraum - Echte Verantwortung für Architektur, Produktlogik und technische Richtung - Die Möglichkeit, ein relevantes System fast von Grund auf mit aufzubauen - Sichtbarer Impact: Deine Entscheidungen beeinflussen direkt Produkt, Geschwindigkeit und Marktpotenzial - Wenig Politik, wenig Verwaltung, wenig Overhead - Schnelle Entscheidungen und direkter Draht zum Gründer - Viel Freiheit in der Wahl guter technischer Lösungen - Ein Umfeld, in dem starke Entwickler nicht ausgebremst, sondern bewusst in Verantwortung gebracht werden - Remote-Arbeit mit hohem Vertrauen und echter Eigenverantwortung

