Fullstack Developer (Java/React)

Grape Up is a consulting & technology company, helping enterprises create the most important applications by leveraging AI & cloud-native technologies and modern ways of delivering software.

Grape Up is a consulting and technology company helping enterprises build mission-critical applications by leveraging AI, cloud-native technologies, and modern software delivery practices.

As a member of our team, you will collaborate with both Grape Up engineers and client-side specialists to develop innovative digital products. You will be involved in building new solutions, delivering impactful features, and contributing to the continuous evolution of products used by thousands of users worldwide.

Beyond day-to-day development, you will have the opportunity to influence technical decisions, shape system architecture, drive quality improvements, and promote engineering best practices across the project. Working closely with business stakeholders, product teams, and end users, you will help turn business needs into valuable, scalable solutions.

At Grape Up, we believe in long-term career growth rather than short-term assignments. We provide the flexibility to explore new technologies, industries, and challenges while working on ambitious projects for global enterprises. By joining us, you will become part of a culture that values ownership, continuous learning, collaboration, and engineering excellence.

Responsibilities

• Design, develop, and maintain modern cloud-native applications using Java and React

• Deliver new features and enhancements across the entire technology stack, from backend services to user-facing interfaces

• Collaborate closely with business stakeholders, Product Owners, and cross-functional teams to translate business needs into technical solutions

• Participate in system architecture discussions and contribute to technical decision-making

• Ensure high software quality through code reviews, automated testing, and continuous improvement initiatives

• Promote engineering best practices, coding standards, and maintainable software design

• Continuously seek opportunities to improve development processes, tools, and the overall product quality

• Be part of an Agile team that values teamwork, feedback, and continuous improvement
  

Requirements

• 3+ years of experience in full-stack software development using Java and React

• Experience with CI/CD pipelines and modern software delivery practices

• Good understanding of RESTful APIs, microservices architecture, and distributed systems

• Hands-on experience in building cloud-native applications and deploying solutions to cloud environments

• Understanding of software design principles, testing strategies, and code quality standards

• Experience in using AI/LLM-powered tools in a professional context

• Ability to work effectively in Agile teams and collaborate with both technical and non-technical stakeholders

• Strong problem-solving skills and a proactive approach to delivering business value

• Very good command of English and Polish, both written and spoken (B2+/C1) – daily collaboration within the team takes place in English
  

Nice to have

• Knowledge of Python

• Experience in Databricks

• Openness to (short) Business Trips, both domestic and foreign
  

Benefits

• Non-corporate work environment among experienced engineers

• Individual growth & development plan supported by cyclical feedback sessions

• Access to knowledge platforms (e.g. Pluralsight)

• Equipment of your choice

• Financing of conferences, external trainings, and certifications

• Language lessons (English, German and Polish for foreigners)

• LuxMed private medical care

• Weekly Lunch & Learn where we meet up in the office, lunch together, and share our knowledge

• Employee referral program

• Rewards for the success of the month and year awarded by our employees

• Special rewards for your years with us (G-Man)

• Integration activities