Expert Full Stack Engineer

About the role

Ciklum is seeking an Expert Full Stack Engineer to join its Czech team. You will work in a cross‑functional group building secure, scalable wallet infrastructure and developer tooling for a platform trusted by major financial institutions, banks and Web3 companies.

Key responsibilities

• Design and implement rich frontend experiences and scalable backend services for the wallet platform.
• Own features across the stack, from architecture and implementation to testing, deployment and optimisation.
• Build and maintain APIs supporting authentication, wallets and payments infrastructure.
• Develop user‑facing features and tooling for both end‑users and developers.
• Collaborate with product, design and other engineering teams to deliver high‑impact features.
• Contribute to performance, reliability and scalability improvements and uphold engineering best practices.

Required profile

• 3–5 years of experience delivering production‑grade full‑stack web applications.
• Strong appreciation for clean, maintainable code and system performance.
• Ability to work cross‑functionally with product and design partners.
• Interest in fintech, Web3 and building infrastructure at global scale.

Required skills

• React and TypeScript for frontend development.
• Node.js and Express (or similar) for backend services and APIs.
• Experience with blockchain technologies such as EVM chains, wallets and on‑chain integrations.
• Solidity – writing, deploying, testing or interacting with smart contracts.
• State‑management solutions in production React applications.
• Security‑focused development for high‑sensitivity domains.

What we offer

• Flexible working hours and home‑office option.
• Hybrid and remote working possibilities across Prague, Hradec Králové and Zlín.
• 5 weeks of holiday, 5 sick days and a loyalty bonus programme.
• Multisport Card, meal allowance and weekly company breakfast.
• Internal trainings, paid certifications and conference participation.