Full-Stack Engineer (Backend Leaning) - Payments Engineering

Job description

**This position is listed on behalf of a partner company, which manages all applications and next steps. Our partner is looking for a Full-Stack Engineer (Backend Leaning) – Payments Engineering based in Netherlands.** As a Full-Stack Engineer specializing in backend development, you will help build and evolve the payment infrastructure that powers a rapidly growing AI technology platform. You will work on critical systems responsible for billing, usage tracking, pricing, and payment processing across self-service and enterprise customers. Your work will directly impact revenue accuracy, customer experience, and the reliability of financial operations. You will contribute to modernizing existing systems, developing scalable event-processing services, and integrating new payment solutions while ensuring seamless migrations. Working closely with Engineering, Product, Growth, Finance, Tax, and Sales teams, you will solve complex technical challenges in a fast-paced, AI-first environment. This remote opportunity offers significant technical ownership, opportunities to tackle challenging engineering problems, and the freedom to make a measurable impact on products used by millions of people and businesses worldwide. ### Accountabilities - Design, develop, and maintain reliable payment and billing systems that support customer transactions, pricing models, and revenue operations across self-service and enterprise offerings. - Build and improve usage-tracking and metering systems to ensure accurate measurement of customer activity while minimizing performance overhead and latency. - Lead and contribute to the migration and modernization of enterprise pricing and usage-processing infrastructure, including the development of stream-processing services for usage events. - Improve payment experiences by simplifying customer upgrades and transactions, supporting payments through different legal entities, and integrating additional payment providers. - Collaborate with Finance and Tax teams to meet compliance, auditing, reporting, and financial accuracy requirements. - Partner with Product and Growth teams to implement pricing changes, support experimentation, and enable new commercial strategies. - Investigate and resolve complex billing issues by analyzing customer journeys, application logs, system behavior, and code to identify root causes and implement lasting solutions. - Design and implement secure, scalable APIs, backend services, data storage solutions, and supporting infrastructure. - Plan and execute migrations and system changes carefully, ensuring backward compatibility, minimizing disruption, and protecting customers from billing errors or payment interruptions. - Work cross-functionally with engineers, Sales teams, Forward Deployed Engineers (FDEs), Finance specialists, and other stakeholders to deliver robust payment solutions. - Maintain high standards for testing, security, code quality, observability, and operational reliability across systems that process financial transactions. - Take ownership of technical challenges from investigation and design through implementation, deployment, monitoring, and continuous improvement. ## Requirements: - **Strong Python expertise:** Demonstrated proficiency in Python and the ability to build maintainable, reliable, and efficient software. - **Backend engineering experience:** A strong background in backend development, including designing and operating production systems. - **Software and system design:** Solid understanding of common software architecture and design patterns, APIs, cloud infrastructure, storage technologies, and data structures. - **Testing and security:** Strong fundamentals in test design, automated testing, application security, and building dependable production systems. - **Production debugging:** Ability to investigate complex technical issues, analyze logs and application behavior, identify root causes, and implement effective solutions. - **System adaptability:** Ability to quickly understand a large existing codebase and navigate complex infrastructure, legacy components, and interconnected services. - **Financial accuracy and attention to detail:** A careful, methodical approach to modifying live systems that handle payments, pricing, usage data, and revenue. - **Migration and reliability mindset:** Ability to plan and execute system changes safely, manage technical risks, and minimize disruption to customers and business operations. - **Ownership and problem-solving:** A proactive, independent approach to solving challenging engineering problems, making sound technical decisions, and delivering measurable results. - **Cross-functional collaboration:** Strong communication skills and the ability to work effectively with engineering, product, growth, finance, tax, and commercial teams. - **Flexible qualifications:** No formal degree, certification, or specific length of professional experience is required. Demonstrated ability to solve difficult technical problems through previous projects, open-source contributions, or GitHub work is valued. **The following qualifications are considered an advantage:** - Experience integrating payment-processing providers or developing billing, subscription, and usage-based pricing systems. - Familiarity with stream processing, event-driven architectures, or high-throughput event pipelines. - Experience working with financial operations, tax requirements, compliance processes, or audit-related systems. - Experience deploying and operating applications in Kubernetes environments. ## Benefits: - **Remote-first flexibility:** Work remotely from Germany or other eligible locations across Europe, the United Kingdom, Ireland, and the United States, subject to hiring eligibility. - **International office access:** The option to work from offices in Dublin, London, New York, San Francisco, or Warsaw. - **Professional development budget:** Access to an annual discretionary stipend to support learning, training, and professional growth. - **Coworking allowance:** Receive a monthly coworking stipend if you are not located near one of the main office hubs. - **Team connection and travel:** An annual discretionary stipend to meet and spend time with colleagues in person. - **Annual company offsite:** Participate in a company-wide gathering at a different destination each year. - **Innovative engineering culture:** Work in an AI-first environment that emphasizes rapid experimentation, technical excellence, autonomy, and minimal bureaucracy. - **Career growth opportunities:** Take on challenging projects and expand your impact beyond the immediate scope of your role. - **Meaningful technical ownership:** Help shape critical payment infrastructure and solve complex problems with direct effects on customers and business performance. - **Collaborative international team:** Work alongside talented engineers, researchers, and operators across multiple countries and disciplines.