Lead Frontend Developer, VHI

Posted 12 Days Ago
Be an Early Applicant
Hiring Remotely in Sofia, Sofia-grad
In-Office or Remote
Expert/Leader
Cloud • Software
The Role
The Lead Frontend Developer will oversee technical direction, ensure quality in web applications, mentor developers, and enhance frontend architecture using modern JavaScript frameworks.
Summary Generated by Built In

About Virtuozzo

Virtuozzo is a pioneering force in virtualization and cloud infrastructure, powering service providers globally with reliable, scalable, and efficient solutions. Born from innovations in container-based virtualization, we continue to contribute to major open-source projects like OpenVZ, Linux kernel, Kubernetes, CRIU, KVM, and OpenStack.

We are looking for a Lead Frontend Developer who will take responsibility for leading the technical direction of complex web applications. The role combines hands-on development with technical leadership and governs frontend delivery across five vectors: Effectivity, Reliability, Security, Performance, and Versatility. This position requires deep experience with Vue and React, modern frontend tooling, testing, and building cloud infrastructure interfaces and dashboards. Experience with billing systems is a strong advantage.

Role & Responsibilities

• Product development according to the five core vectors
• Design, build, and evolve efficient, reliable JavaScript/TypeScript frontend code
• Own frontend architecture and technical decisions for complex, data-heavy UIs
• Extend and adapt existing codebases to support new functionality, browser/OS
updates, and performance improvements
• Build and maintain unit, integration, and end-to-end tests, including Playwright based E2E testing
• Participate across all levels of development, from detailed implementation to high-level UI and architectural design
• Analyze requirements and deliver robust, maintainable software solutions
• Perform code reviews, debugging, testing, and integration
• Mentor less experienced developers and act as a technical reference point
• Provide expertise in test automation, testing methodologies, tools, and processes
• Collaborate closely with Backend, Storage, Product Management, and other Virtuozzo Group teams

Requirements

10+ years of professional software development experience

• Strong proficiency in JavaScript/TypeScript, browser internals, and modern frontend architectures
• Production experience with Vue and React (or deep Vue expertise with prior React experience)
• Experience shipping complex, data-heavy UIs (forms, wizards, async/realtime states, large tables)
• Strong testing discipline: unit/component tests and Playwright E2E
• Experience consuming OpenAPI-generated clients and working with contract-drivenAPIs
• Experience building cloud infrastructure interfaces and dashboards
• Experience with billing, subscription, or payment-related systems is a strong advantage
• Hands-on experience configuring and optimizing Webpack and Vite
• Performance awareness (bundling, code-splitting, UX metrics), accessibility basics (WCAG), and secure-by-default practices (OWASP)
• Comfortable working with CI/CD pipelines and iterative delivery workflows
• Solid understanding of software engineering fundamentals (algorithms, data structures, concurrency)
• Ability to work independently, lead initiatives, and improve development processes

What We Offer 

  • Remote and flexible working hours for EMEA (Europe locations only)
  • Group private medical insurance or medical allowance
  • Professional growth: training budget, certification support, mentorship, and career progression pathways
  • Inclusive, multicultural team: work alongside talented engineers from across the globe on infrastructure-grade cloud products
  • Employee perks: recognition programs, referral bonuses, and learning initiatives such as book clubs or tech talks
  • Share Options – shares in our success with share options

Top Skills

JavaScript
Openapi
Playwright
React
Typescript
Vite
Vue
Webpack
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The Company
222 Employees
Year Founded: 2015

What We Do

Virtuozzo provides hyperconverged cloud software and services for CSPs, MSPs, ISVs and enterprises.

From Infrastructure-as-a-Service and Platform-as-a-Service to Anything-as-a-Service, our mission is to make cloud easy, accessible and affordable for all. Using our production-ready OpenStack cloud platform reduces cost and improves margins for cloud service providers, and reduces cost and complexity for their customers too.

Virtuozzo developed the first commercially available container virtualization technology and is an active contributor to many influential open source projects and foundations, including Linux kernel, OpenVZ, Docker, Kubernetes, CRIU™, KVM, libvirt, QEMU, OpenStack, CNCF and OCI.

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