Senior Solidity & Ethereum Engineer job opportunity at Capgemini SE.



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Capgemini SE Senior Solidity & Ethereum Engineer
Experience: Professional
Pattern: Permanent
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Hiring inbound within Gdańsk, Kraków, Poznań, Opole, Wrocław, Lublin, Warszawa, Katowice

Choosing Capgemini means choosing a company where you will be empowered to shape your career in the way you’d like, where you’ll be supported and inspired by a collaborative community of colleagues around the world, and where you’ll be able to reimagine what’s possible. Join us and help the world’s leading organizations unlock the value of technology and build a more sustainable, more inclusive world. YOUR ROLEChoosing Capgemini means choosing a company where you will be empowered to shape your career in the way you’d like, where you’ll be supported and inspired by a collaborative community of colleagues around the world, and where you’ll be able to reimagine what’s possible. Join us and help the world’s leading organizations unlock the value of technology and build a more sustainable, more inclusive world. We are seeking an experienced Solidity & Ethereum Engineer who can architect, develop, and optimize smart contracts and private Ethereum network infrastructure. The ideal candidate has hands-on experience with Azure, DevOps practices, and modern blockchain development tools. This role involves both strategic problem solving and practical engineering execution.YOUR TASKSDesign, develop, and optimize Solidity smart contracts for private Ethereum networks.Tune and optimize Ethereum node configurations for performance, efficiency, and reliability.Build and maintain CI/CD pipelines using Azure DevOps.Work with Azure Cloud infrastructure to deploy, manage, and monitor blockchain components.Develop and test blockchain applications using Hardhat.Collaborate with cross-functional teams to solve complex engineering problems and deliver high-quality solutions.Contribute to architectural decisions and best practices for secure, scalable blockchain systems.(Optional/Preferred) Integrate or develop components using Hyperledger FireFly.YOUR PROFILEYou have strong, proven experience with Solidity and Ethereum development.You have hands-on knowledge of private Ethereum network optimization.You have practical experience with Azure Cloud services and Azure DevOps pipelines.You are proficient in using Hardhat for development, testing, and deployment.You have excellent problem-solving skills and are able to work effectively in a collaborative environment.You have a strong understanding of blockchain fundamentals, smart contract security, and Ethereum tooling.You speak English fluently.You are committed and able to work in a team, with the willingness to develop and learn. PREFERRED QUALIFICATIONS Experience with Hyperledger FireFly or similar blockchain orchestration frameworks.Background or interest in finance, fintech, or decentralized financial systems.Familiarity with enterprise-grade cloud deployment, monitoring, and automation.WHAT YOU’LL LOVE ABOUT WORKING HEREEnjoy hybrid working model that fits your life - after completing onboarding, connect work from a modern office with ergonomic work from home thanks to home office package (including laptop, monitor, and chair). Ask your recruiter about the details.Access to over 70 training tracks with certification opportunities (e.g., GenAI, Architects, Google) on our NEXT platform. Dive into a world of knowledge with free access to Education First languages platform, Pluralsight, TED Talks, Coursera and Udemy Business materials and trainings.Practical benefits: private medical care with Medicover with additional packages (e.g., dental, senior care, oncology) available on preferential terms, life insurance and 40+ options on our NAIS benefit platform, including Netflix, Spotify or Medicover Sport.GET TO KNOW USCapgemini is committed to diversity and inclusion, ensuring fairness in all employment practices. We evaluate individuals based on qualifications and performance, not personal characteristics, striving to create a workplace where everyone can succeed and feel valued.Do you want to get to know us better? Check our Instagram — @capgeminipl or visit our Facebook profile — Capgemini Polska. You can also find us on TikTok! — @capgeminipl.ABOUT CAPGEMINICapgemini is a global leader in partnering with companies to transform and manage their business by harnessing the power of technology. The Group is guided everyday by its purpose of unleashing human energy through technology for an inclusive and sustainable future. It is a responsible and diverse organization of over 360,000 team members globally in more than 50 countries. With its strong 55-year heritage and deep industry expertise, Capgemini is trusted by its clients to address the entire breadth of their business needs, from strategy and design to operations, fueled by the fast evolving and innovative world of cloud, data, AI, connectivity, software, digital engineering and platforms.  Apply now!Capgemini is an AI-powered global business and technology transformation partner, delivering tangible business value. We imagine the future of organizations and make it real with AI, technology and people. With our strong heritage of nearly 60 years, we are a responsible and diverse group of 420,000 team members in more than 50 countries. We deliver end-to-end services and solutions with our deep industry expertise and strong partner ecosystem, leveraging our capabilities across strategy, technology, design, engineering and business operations. The Group reported 2024 global revenues of €22.1 billion.Make it real | www.capgemini.com

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