Senior JavaScript React Developer in Constanţa

Salary range: B2B 34-43E/h + VAT Ciklum  is looking for a  Senior JavaScript (React) Developer  to join our team full-time in Poland. We are a leading global product engineering and digital services company that unites 4000+ seasoned professionals globally on various projects in healthcare, fintech, travel, sportswear, entertainment, and security. Ciklum delivers high-impact technology solutions to Fortune 500 and fast-growing organisations worldwide. About the role: As a Senior JavaScript (React) Developer, become a part of a cross-functional development team working for our Client. You will join a highly motivated team and will be working on a modern solution for our existing client. We are looking for technology experts who want to make an impact on new business by applying best practices and taking ownership. About the Client: Our client is a sports betting company, who would like to manage their content with a “Plug and Play” approach. Project team consists of 200+ engineers working on different streams and areas of their sport-betting products. The project uses the latest stable technologies like Java, React and others. Responsibilities: Be proactive in communication with team members and client Delivery. Create and maintain modern solutions according to unit standards Code Quality. Follow and improve code quality standards Analyze and Estimate. Perform technical assessment of business requirements to ensure the possibility of their implementation within a reasonable time Software Design. Create and review software feature design documents and provide the solution Mentorship of junior colleagues Requirements: You can name examples of use in different contexts. Are guided by best-practices and specifications of such skills: Design patterns, development principles HTML/CSS. Pre/post -processors, methodologies JavaScript/TypeScript. Core, performance, security React. JSX, virtual DOM, hooks, state management Testing. Approaches, types, tooling CI/CD. Understanding, usage Authorization. JWT Git. Branching strategies Agile. Principles and processes Upper-Intermediate English Desirable: You should have an idea of the subject and its parts. Can explain. Has experience of use of such skills: Other modern framework (Angular, Vue, ReactNative) Micro-frontends Cloud platforms experience Code quality tools (Sonarqube) Experience with CI/CD set up (Docker, GitlabCI, CircleCI etc.) Familiar with UX concepts such as Information Architecture Personal skills: Has sufficient communication skills for effective dialogue with customers and colleagues Collaborates in a team effectively Is able to plan, schedule and monitor own work within short time horizons Demonstrates a rational and organized approach to work Understands and uses appropriate methods, tools and applications. Identifies and negotiates own development opportunities Works under routine direction, without frequent reference to others What's in it for you? Care: your mental and physical health is our priority. We ensure comprehensive company-paid medical insurance, life insurance and Multisport card Tailored education path: boost your skills and knowledge with our regular internal events (meetups, conferences, workshops), Udemy licence, language courses and company-paid certifications Growth environment: share your experience and level up your expertise with a community of skilled professionals, locally and globally Flexibility: choose how you want to work – a 100% remote or on-site in our office in Gdansk or Wroclaw. Own your schedule – you are the one to decide when to start your working day. Just dont miss your regular team stand-up Opportunities: we value our specialists and always find the best options for them. Our Internal Mobility Program helps change a project if needed to help you grow, excel professionally and fulfil your potential Global impact: work on large-scale projects that redefine industries with international and fast-growing clients Welcoming environment: feel empowered with a friendly team, open-door policy, informal atmosphere within the company and regular team-building events About us: Join a well-established company and a strong team of professionals. Seize the perks of global opportunities, local approach and start-up spirit. Boost your skills with modern stacks and industry-leading clients! Enjoy what you do, do what you enjoy! Be bold, not bored! Interested already? We would love to get to know you! Submit your application. Can’t wait to see you at Ciklum.