May 5, 2026

Senior Fullstack JavaScript Developer – Cloud & Data Solutions

Senior • Remote

18,900 - 24,150 PLN

Warsaw, Poland

Unleash innovation at the intersection of cloud, data, and full-stack development — shape sustainable solutions for a better tomorrow!

Warszawa-based opportunity with a remote work model (once every two weeks in the office).

As a Senior Fullstack JavaScript Developer – Cloud & Data Solutions, you will be working for our client, a global leader in healthcare and agriculture dedicated to solving major global challenges in the spirit of environmental care. Join a forward-thinking team developing cutting-edge solutions in crop science, contributing to sustainable farming, resilient plants, and thriving communities. Your expertise will drive the development of cloud-integrated software, data analysis tools, and innovative machine learning integrations that foster a sustainable future.

Your main responsibilities:

  • Develop and support business-critical software solutions within an agile, global, product-oriented team
  • Solve organization-wide challenges related to identity and account management
  • Design and document technical architecture and software solutions across multiple teams
  • Ensure the technical feasibility, quality, and high performance of all delivered solutions
  • Evaluate and recommend new technologies to enhance efficiency and scalability
  • Build and maintain relationships with key stakeholders and partner organizations
  • Mentor junior engineers, fostering technical growth and innovation
  • Continuously develop your technical skills and career in a fast-paced environment

You're ideal for this role if you have:

  • 5+ years of experience in software development or engineering
  • Strong problem-solving skills, proactive attitude, and collaborative mindset
  • Deep knowledge of JavaScript, including runtimes, APIs, and ecosystem
  • Extensive experience with Backend development using Node.js
  • Proficiency in TypeScript, with a track record of writing clean, maintainable code
  • Strong front-end skills with React, build tools, and performance optimization
  • Cloud expertise – working with AWS (DynamoDB, Lambda, Step Functions)
  • Product-oriented mindset – understanding business domains and proposing pragmatic solutions
  • Excellent command of English and experience working in agile, product-driven organizations
  • Ability to collaborate effectively with a global team across time zones
  • Willingness to learn, innovate, and grow in a dynamic environment

It is a strong plus if you have:

  • Knowledge of Medusa.js
  • Experience with SAP and Salesforce integration

Language required for the role:

  • Fluent in English with excellent communication skills

Eligibility for the role:

  • Only candidates with an existing legal right to work in the European Union will be considered for this role.

#MAKEYourCareerBETTER
Interested? Apply now and include your CV in English or Polish, along with a statement confirming your consent to the processing and storage of your personal data.

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Krakow, Poland

23,520 - 30,240 PLN

🏢 Summary: Senior Fullstack Engineer role focused on designing and developing scalable, user-centric applications using Java and React in a hybrid Krakow-based environment. The position involves software architecture design, UI improvements, backend development, and DevOps-driven automation to enhance application stability and operational efficiency. The role supports digital transformation through robust system design and continuous service improvement. 🗂️ Requirements: Minimum 5 years of experience in Java production application development, Experience with front-end development using React, Strong proficiency in Java and Web API development, Experience in building secure and scalable backend services, Expertise in database design with PostgreSQL, Experience with T-SQL scripting, query optimization, performance tuning, Hands-on experience with CI/CD pipelines, Strong understanding of SDLC, Fluent English, Legal right to work in the European Union 📃 Skills: Java, React, WebAPI, PostgreSQL, T-SQL, SQL, CI/CD, DevOps, SDLC, AWS, Azure 🏢 Description: Unleash innovation by shaping the future of software architecture and user experience! Krakow-based opportunity with hybrid work model, offering flexibility and dynamic collaboration. As a Senior Fullstack Engineer – Java and React Development , you will be working for our client in the technology industry, focusing on designing scalable, efficient, and user-centric applications. You will contribute to creating cutting-edge solutions that enhance UX, application stability, and operational efficiency, supporting the digital transformation journey. Your main responsibilities: Participating in software architecture design to build robust systems. Leading UI enhancements and improvements to elevate user experience and application stability. Implementing solutions following best Design Patterns for maintainability and scalability. Analyzing requirements to fully understand solutions and recommending data-driven improvements. Creating comprehensive documentation for developed solutions to ensure clarity and knowledge sharing. Developing and testing application prototypes to validate concepts and designs. Managing changes through the Service Management lifecycle, ensuring smooth transitions. Contributing actively to automation initiatives and Service Management process improvements. Providing exceptional customer support by addressing issues promptly and effectively. Communicating with customers to understand needs and deliver tailored solutions. You're ideal for this role if you have: At least 5 years of professional experience in production applications development in Java, including front-end development with React. Strong proficiency in Java and Web API development, with a focus on building secure, scalable backend services. Expertise in database design, particularly with PostgreSQL, T-SQL scripting, query optimization, and performance tuning. Hands-on experience with DevOps practices like CI/CD pipelines. Deep understanding of the Software Development Life Cycle (SDLC), from requirements gathering to deployment and maintenance. Exceptional problem-solving skills with keen attention to detail, ensuring high-quality deliverables. It is a strong plus if you have: Experience with cloud platforms (e.g., AWS, Azure). Certifications in Java, React, or DevOps tools. Language Required for the role: Fluent English, with excellent communication skills. Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.