Expert JavaScript Engineer

Ciklum is looking for a Expert JavaScript Engineer to join our team full-time in Poland. 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 Expert JavaScript Engineer, become a part of a cross-functional development team engineering experiences of tomorrow. This project is with a global Financial Services Provider that focuses on providing responsible credit to underbanked customers in international markets. The current strategy centers on consolidating technology delivery to a single partner to drive efficiency and operational excellence. You will join the Customer Application. The primary mobile application serves as a critical self-service tool for over 800,000 users. It is currently undergoing a technology refresh, migrating to a modern framework to improve scalability, performance, and accessibility compliance across the organization's European footprint. Responsibilities: Responsible for solution architectures and setting the strategy across businesses, developing innovative ideas and tracking emerging issues Provide hands-on technical leadership, guiding development teams and ensuring scalable software delivery using DevOps best practices Design, develop, and maintain complex software systems, driving high-quality code production and defining system architecture Act as a force multiplier by improving team processes and guiding software deliveries from conception to deployment Manage and oversee implementation against architectural standards and designs, engaging closely with product and architecture stakeholders Mentor and develop software builders, providing technical leadership and fostering a collaborative engineering community Requirements: Minimum 10 years of experience in major and complex architecture design and programme implementation Deep technical expertise in mobile application development, including React Native and AWS Expert proficiency in Android and iOS operating systems Expert knowledge of AWS components (API Gateway, Lambda, ECS, Fargate, S3, RDS, DynamoDB, CloudFormation) Extensive experience with monitoring and logging tools such as AWS CloudWatch, CloudTrail, and Kibana Specialist business knowledge with the ability to manage teams and engage in high-level client relationship management Desirable: Familiarity with the Product Operating Model and advanced AWS services like X-Ray Strong focus on emerging 'AWS Cloud' technologies and innovative marketplace ideas Ability to forge close links with architects, developers, and analysts to build quality-driven communities Fluent English speaking with excellent verbal and written communication skills for stakeholder engagement 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 flexibility – full remote working possibilities Care: We've got you covered with company-paid premium medical package through Luxmed Benefits: Access the MyBenefit cafeteria platform, allowing you to choose perks that best suit your lifestyle and needs 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. With delivery centers in Wrocław and Gdańsk, our 300+ professionals in Poland drive forward-thinking solutions for global clients. Join a community where collaboration sparks innovation—and your impact reaches millions. 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-OD4