Senior Frontend Developer

B2B Project: Senior Frontend Developer Hays IT Contracting is a cooperation based on B2B rules. We connect IT specialists with the most interesting technology projects on the market. For our client, a global professional services and risk advisory organization delivering digital solutions and analytics platforms for international customers, we are currently looking for Experts for the role of Senior Frontend Developer. Cooperation mode: Hybrid, KrakówCompensation: up to 200 PLN/h net (+ VAT)Start Date: ASAPCooperation: Initial agreement until the end of March with a possibility of further project continuation, depending on future project requirementsContract type: B2B, through Hays PolandLanguage: English (C1) Project Overview: As a Senior Frontend Developer, you will contribute to the development of modern web applications and reusable UI component libraries used in an international environment. The project focuses on delivering high-quality, scalable, responsive, and accessible frontend solutions while collaborating closely with product, design, and engineering stakeholders across multiple locations. The role offers an opportunity to influence technical decisions, contribute to architecture discussions, and support the development of engineering best practices within the project environment. You will collaborate with an international project ecosystem involving engineering teams and stakeholders located across multiple regions, including Dublin and Singapore. The project places a strong emphasis on engineering excellence, reusable architecture, accessibility, performance, and high-quality user experiences. Scope of Services: Design, develop, and maintain scalable and reusable Angular applicationsBuild and enhance reusable UI components using StencilJS, Web Components, and Shadow DOMDeliver responsive and user-friendly interfaces aligned with modern UX standardsManage client-side state using Apollo Client and RxJSIntegrate frontend applications with GraphQL APIs, including queries, mutations, and cache managementCollaborate with product managers, designers, backend engineers, and other project stakeholders to deliver new functionalitiesCreate clean, maintainable, and well-tested code using Jest and CypressTroubleshoot and optimize existing frontend solutions with a focus on performance, accessibility, and user experienceParticipate in architecture discussions and contribute to technology decisionsProvide technical guidance and mentoring support within the project team Key Requirements: Strong commercial experience in building modern web applicationsAdvanced knowledge of Angular 15+ (components, services, routing, dependency injection)Strong TypeScript and modern JavaScript skillsExperience with HTML5, CSS3, browser APIs, and modern web standardsPractical experience with RxJS and reactive programmingKnowledge of Apollo Client and GraphQLExperience building reusable UI components with StencilJS, Web Components, and Shadow DOMHands-on experience with Jest and CypressSolid understanding of GitStrong focus on code quality, scalability, maintainability, and testingExperience optimizing performance, accessibility, and user experienceExcellent communication, collaboration, and problem-solving skillsEnglish language proficiency at C1 level Nice to Have: Experience with Lit, Nx monorepo, Storybook, and i18n/i18nextExperience with D3.js or EChartsKnowledge of CI/CD pipelines and automated testing workflowsUnderstanding of WCAG and accessibility best practicesExperience with AI-assisted development tools such as Cursor, Claude Code, GitHub Copilot, or similar solutionsTechnical degree or equivalent practical experience Additional Information: Equipment required for project delivery will be provided by the clientA quick competency assessment processUp to 2 remote project meeting What We Offer: A quick recruitment processStandard benefits including preferential rates for LuxMed, Multisport and life insurance packagesThe chance for a long-term cooperation on projects for top players in numerous sectorsOpportunities for future assignments with other leading clients through Hays What will the recruitment process look like: Your CV will be verified by a Hays RecruiterA Hays Recruiter will contact you by phone for a short discussion about the project and your experienceUp to two remote project meetings with client representativesProposal of B2B cooperation termsWelcome to the project! Hays Poland sp. z o.o. is an employment agency registered in a registry kept by Marshal of the Mazowieckie Voivodeship under the number 361.