Senior JavaScript Engineer

Ciklum is looking for a Senior JavaScript Engineer to join our team full-time in Bulgaria. We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live. About the role: As a Senior JavaScript Engineer, become a part of a cross-functional development team engineering experiences of tomorrow. Our Client is the leader in agentic security, enabling enterprises to shift security tasks to AI agents to let people focus on strategic, high-value human work. Client enables enterprises to shift security tasks to AI agents. By connecting to alert sources and other data sources via API connections and Webhook, their agents ingest, categorize, enrich, and investigate alerts. Customers report saving between 30 minutes and 2.5 hours per investigation, enabling them to up-level their current team and reduce their spend on managed services. Responsibilities: Design, develop, and maintain modern, high-performance web applications using React and TypeScript Work independently while ensuring alignment with shared engineering standards and best practices Communicate effectively within a distributed team, demonstrating strong written and verbal English skills, especially in asynchronous communication (e.g., Slack) Utilize modern development tools such as Vite, Playwright, and AI-assisted programming tools (e.g., Cursor) to improve development efficiency and testing quality Requirements: Experienced frontend web developer, Senior or above Extensive experience with React and Typescript Good English and strong written and verbal communication skills, especially for async communication like Slack Ability to work independently while aligning with shared standards Preferred if they have experience with: Vite, Playwright, and AI programming tools like Cursor What`s in it for you? Strong community: Work alongside top professionals in a friendly, open-door environment Growth focus: Take on large-scale projects with a global impact and expand your expertise Tailored learning: Boost your skills with internal events (meetups, conferences, workshops), Udemy access, language courses, and company-paid certifications Endless opportunities: Explore diverse domains through internal mobility, finding the best fit to gain hands-on experience with cutting-edge technologies Flexibility: Enjoy radical flexibility – work remotely or from an office, your choice Care: We’ve got you covered with company-paid medical insurance, mental health support, and financial & legal consultations About us: At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress. Since expanding to Bulgaria in 2022, we’ve been building a fast-growing team that thrives on learning, collaboration, and innovation. Join us on this exciting journey and help shape the future of our delivery center. Want to learn more about us? Follow us on Instagram, Facebook, LinkedIn. Explore, empower, engineer with Ciklum! Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum. #LI-MH1 Apply To This Job