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December 17, 2025

Application Architect – Frontend

Senior • Hybrid

$1,100 - $1,400/

Warsaw, Poland

Sii ensures that all employment-related decisions are made solely on the basis of qualifications and competencies. We are committed to equal treatment of all individuals, regardless of any protected characteristics, and promote a diverse and inclusive work environment.


We are seeking an Architect with a strong frontend background to define and lead the architectural direction of our web platforms. This role requires a hands-on technologist who is equally comfortable writing high-quality code and taking part in making strategic architectural decisions. The ideal candidate will act as a technical leader for frontend initiatives across the web section, collaborating closely with developers, architects, and stakeholders.


Your tasks

  • Design and evolve the frontend architecture, particularly for Angular-based applications

  • Guide frontend strategy across multiple web projects and teams

  • Contribute to development efforts (approximately 50% of the time), especially in architecture-critical areas

  • Ensure seamless integration with backend systems and microfrontend structures

  • Support and mentor development teams, driving consistency and technical excellence


Requirements

  • Minimum 7 years of experience in frontend development; currently at the Senior/Principal/Architect level

  • Proficient in Angular

  • Basic working knowledge of PHP

  • Familiarity with CMS platforms (e.g., Drupal, Magento)

  • Understanding of microfrontend architectures and backend integration patterns

  • Strong communication and leadership skills, with the ability to set direction and maintain technical oversight

  • Fluent Polish required

  • Residing in Poland required


Nice-to-have requirements

  • Experience with other frameworks such as React or Vue

  • Exposure to containerization, cloud infrastructure, and CI/CD pipelines

  • Previous experience in a cross-functional or enterprise architecture environment


What we offer 

  • Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas 

  • Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market 

  • We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 

  • Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more 

  • Comfortable workplace – class A offices or remote work 

  • Dozens of fascinating projects for prestigious brands from all over the world 

  • PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers 

  • Investment in your growth – meetups, webinars, training platform and technology blog – you choose 

  • Fantastic atmosphere created by all Sii Power People 


Join the Sii team – develop your skills, gain experience, and build your career!