Senior Full Stack Engineer (Checkout)

Accountabilities

• Own and develop backend capabilities that power end-to-end checkout and transaction workflows, including integrations, quote management, session handling, status tracking, recovery processes, and transaction orchestration.


• Design and implement scalable integration frameworks for external service providers, ensuring a consistent and reliable user experience across multiple systems.


• Define, maintain, and evolve API contracts and backend services that connect frontend applications, partner systems, and core infrastructure.


• Build resilient solutions for asynchronous, long-running, and failure-prone workflows, with a strong focus on observability, reliability, and recovery.


• Collaborate closely with engineering, product, and platform teams to align technical architecture and support cross-functional initiatives.


• Contribute to frontend development where required, particularly when designing user interfaces that closely interact with backend systems and workflows.


• Participate in technical discovery, architectural discussions, and continuous improvements to enhance scalability, maintainability, and performance.


• Take ownership of features from concept to deployment, ensuring high-quality implementation and long-term support.

Requirements

• Extensive experience in backend software engineering with strong expertise in TypeScript and Node.js.


• Proven full-stack development capabilities, including experience building modern web applications with React and TypeScript.


• Strong understanding of API design, distributed systems, asynchronous workflows, and service integrations.


• Demonstrated experience integrating third-party platforms and external APIs while handling complex edge cases, failures, and recovery scenarios.


• Familiarity with cloud-native development, containerized environments, and modern deployment practices.


• Working knowledge of Web3 technologies, blockchain transactions, decentralized applications, or related ecosystems.


• Strong problem-solving skills with the ability to independently navigate complex systems and collaborate across multiple teams.


• Excellent communication and stakeholder management skills in English.


• Ability to thrive in a fast-paced, evolving environment where priorities may shift quickly.


• Experience with payment systems, fintech platforms, digital wallets, exchanges, onboarding flows, compliance-related processes, or similar domains is considered a strong advantage.


• Interest in emerging technologies, decentralized finance, and blockchain innovation is highly desirable.

Benefits

• Competitive salary package ranging from €90,000 to €130,000 annually, based on experience and location.


• Equity participation from day one.


• Fully remote work environment across the EMEA region.


• Flexible working hours to support work-life balance.


• 30 days of paid time off.


• Annual company retreats and international team offsites.


• Choice of work equipment and computer setup.


• One-time remote work budget to support home office or coworking arrangements.


• Annual professional development budget for training, certifications, conferences, and learning opportunities.


• Collaborative and inclusive culture that values ownership, innovation, and continuous growth.


• Opportunity to work on cutting-edge technologies within a rapidly evolving industry.

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