Senior Full Stack Engineer

Ciklum is looking for a Senior Full Stack 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 Senior Full Stack Engineer, become a part of a cross-functional development team engineering experiences of tomorrow. The role should be capable of developing Backend services in Java, developing UI front end using REACT JS and have automation testing using tools like Selenium, Cypress, Playwright, or similar technologies.

Responsibilities:

• Be responsible for building, maintaining, and improving front-end using React JS and back-end systems using Java based services using Agile development methods
• Be a part of the development of scalable web applications with cutting edge technologies, such as: React JS, Java, ES6, HTML5, CSS3, etc.
• Leverage your skills and experience to design, build and maintain the next-generation web-based GUI and contribute features to a complex product built in a distributed Microservices environment
• Contribute to team and organizational improvements in process and infrastructure, develop solutions used by our customers, with a strong emphasis on performance and quality
• Maintain high-quality code by writing unit, integration tests, and automation using tools like Selenium or Cypress or Playwright or Similar technologies

Requirements:

• 5+ years of hands-on experience in React JS, and core concepts

• 5+ Years of experience in Java (Spring Boot, Microservices)

• 5+ years of hands-on experience in HTML5, CSS3

• 5+ years working with any Databases (Postgres SQL, NoSQL, MongoDB – advantage)

• Perform SDET (Software Development Engineer in Test) tasks. This includes proficiency in automation testing using tools like Selenium, Cypress, Playwright, or similar technologies.

• 4+ years of experience with Frontend libraries/frameworks like ReactJS

• 4+ years of experience with backend libraries/frameworks (Nest JS)

• 4+ years of experience with modern CSS/CSS-in-JS development

• Experience with build tools

• Passion for the internet, frontend, and HTML, eager to learn and advocate for the next-generation technologies and tooling

• A can-do attitude and desire to become a technological focal point in the company

• Experience with CI/CD – big advantage

Desirable:

• Node JS (Preferably Nest JS framework)

• Experience in the development of mobile applications

• Relevant academic background

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 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.

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.

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.

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