Senior Full Stack Engineer with focus on Front-end (Accessibility Product H at Sigma Software

Warsaw, Masovian Voivodeship, Poland -

Full Time

Start Date

Immediate

Expiry Date

24 Dec, 25

Salary

0.0

Posted On

25 Sep, 25

Experience

5 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

JavaScript, TypeScript, React, Redux, HTML, CSS, Styled Components, StoryBook, Testing Frameworks, Playwright, Cypress, React Query, Backend Development, API Integration, Relational Database Design, Accessibility

Industry

Software Development

Description

Company Description We're looking for an experienced Fullstack Engineer who’s especially strong on the frontend side. This role focuses on frontend excellence while actively contributing to the essential backend systems that power the tool. It offers the perfect balance between frontend craftsmanship and backend engineering. CUSTOMER Our client is a rapidly growing technology leader in digital accessibility software that helps enterprises make their web and mobile offerings accessible to everyone. Job Description Develop, test, and maintain frontend components with a focus on accessibility. Contribute to the improvement of backend services that power the product you’re building. Enhance backend services to better facilitate product development. Build high-quality, scalable, and modular UI systems for web-based SaaS products. Optimize frontend performance and system efficiency. Participate in design and code reviews to ensure best practices. Collaborate with other engineering teams to integrate across the product stack. Apply testing methodologies using modern automation frameworks for frontend quality assurance. Qualifications Frontend (80% focus): 5+ years of experience with JS/TS using React Experience with Redux Experience with E2E Frontend development of complex enterprise-grade / SaaS applications Strong HTML/CSS capabilities Experience with Styling & UI Libraries: Styled Components, StoryBook Experience with testing frameworks and methodologies (UT/E2E) Practical experience using Testing Tools - Playwright or Cypress Experience working with State/Data Management - React Query Ability to write and reason about clean and modular code Values good UX and pixel-perfect Strong communication skills At least Upper-Intermediate level of English Backend (20% focus): Proven commercial experience in back-end development (any programming language is acceptable). Familiarity with back-end system-design principles, including API definition and integration. Ability to design and implement relational database structures. WOULD BE A PLUS Experience with accessibility Experience building a component library and contributing to open source Experience with Figma

Responsibilities

Develop, test, and maintain frontend components with a focus on accessibility while contributing to backend services. Collaborate with other engineering teams to integrate across the product stack and ensure best practices through design and code reviews.