Mid/Senior Frontend Engineer (React)

About the ProjectWe are looking for Mid/Senior Frontend Developer with React to join a project from logistics industry. Work Mode: remoteStart of the project: ASAPJob ResponsibilitiesDevelop and deliver frontend features following best practicesAnalyze requirements and propose optimal technical solutionsConduct code reviews and ensure code quality standardsCollaborate closely with UX/UI, QA, backend, and DevOps teamsContribute to project documentationDrive improvements and engineering best practices within the teamMaintain and support the application, resolving issues as they ariseImplement and maintain automated testsEnsure performance, responsiveness, and cross-browser compatibilityExpectations4+ years of experience in React frontend development (mid–senior level)Strong experience with REST APIs and state managementExperience with design systems (components, theming, accessibility/ARIA)Hands-on experience with CI/CD and cloud-based frontend deploymentsExperience with automated and E2E testingSolid understanding of performance optimization and responsive designExperience with monitoring tools (e.g., DataDog, Dynatrace)English on an advanced level (min. B2)Nice to haveKnowledge of React Query and custom hooksFamiliarity with camera-based scanning libraries (e.g., ZXing)We offerOngoing support from a dedicated agent, taking care of your project continuity, client contact, necessary formalities, work comfort and developmentConsultant Development Program – advice on growth planning based on the latest trends and market needs in IT, including consultations with agents and growth mentorsAccess to 7N Learning & Development – a development and educational platform with webinars, a library of articles and industry reports, and regular invitations to one-time and recurring development events – technical, business, and lifestyleSpectacular integration events, both for you (e.g., annual Kick-Off trip, Christmas parties, or Summer Olympics sports events) and for your loved ones (e.g., family picnics, movie premieres)Professional development not only during the project – you can get involved in knowledge transfer to others within the 7N Services offering directed at 7N clientsRelationships and access to the knowledge of the most experienced IT experts in the market – the average professional tenure of our consultants in Poland is over 10 yearsA complete benefits package, including funding for medical care, life insurance, sports cards for you and your loved ones, as well as discounts in stores in Poland and abroadAbout 7NConstantly searching for projects, difficult rate negotiations, lack of development support – sounds familiar? At 7N, you gain not only stability of contracts but also the personal involvement of a dedicated agent who ensures your professional comfort and continuous access to development initiatives. Our mission is to provide stable and rewarding collaborations that drive your success as an IT expert and the success of our clients. We build long-lasting relationships based on Scandinavian values and 30 years of experience creating IT solutions for over 200 organizations.