Senior Fullstack Developer – Payments & EV Solutions - Nayax Energy

Description:

Join us at Nayax, a global fintech leader (NASDAQ; TASE: NYAX) revolutionizing the world of cashless payments, consumer engagement, and business management solutions. With more than 1,200 employees across 12 offices worldwide. At Nayax, you’ll be part of a diverse and innovative community where your work makes a real impact and helps shape the future of payments.

Nayax is seeking a Senior Fullstack Developer to join our EV Solutions team.

This role focuses on designing, developing, and maintaining end-to-end solutions that power our payments infrastructure and electric vehicle (EV) ecosystem, with the primary focus on payments. The ideal candidate has deep expertise in backend development for large-scale production systems, combined with Android development experience for building the frontend/mobile layer, enabling them to build scalable services, reusable SDKs and components, and intuitive mobile experiences.

Your key responsibilities will include:

• Lead the design and development of backend services and APIs that power payment processing and EV solutions, ensuring scalability, reliability, and ease of integration.
• Design, build, and maintain high-throughput backend services using Node.js — including queueing and caching layers — for production-scale payment and EV systems.
• Develop and maintain Android applications using Kotlin as the frontend/mobile layer for payments and EV features.
• Collaborate with cross-functional teams (Backend, Mobile, Product, and QA) to define and deliver new features across the payments and EV ecosystem.
• Take ownership of features throughout the entire development lifecycle, from design and implementation to deployment and production support.
• Provide mentorship and technical guidance to junior developers, fostering best practices in coding, design patterns, and architectural decisions.
• Debug, optimize, and maintain existing backend services, SDKs, mobile applications, and UI components to ensure seamless functionality and high-quality performance at scale.

What Makes You a Great Fit:

Backend (Mandatory)

• Bachelor's degree in Computer Science, Software Engineering, or a related field.
• 5+ years of experience in software development, with significant experience building and scaling backend systems in production — payments experience strongly preferred.
• Strong experience developing backend services and RESTful APIs using Node.js.
• Experience designing and implementing scalable software architectures for high-throughput, mission-critical production systems.
• Experience with queueing technologies (e.g., Kafka, RabbitMQ, SQS, or similar).
• Experience with Redis or similar in-memory data stores/caching technologies.
• Experience with AWS cloud services and containerization (Docker, ECS/EKS, or similar).
• Experience working with databases and distributed systems.
• Experience working with databases and distributed systems.
• Experience with CI/CD pipelines, version control (Git), and Agile methodologies.

Android (Mandatory)

• Proficiency in Kotlin and strong knowledge of Android application architecture (MVVM, Clean Architecture, Jetpack, etc.).
• Experience building reusable Android SDKs, libraries, and modular, scalable frontend components.
• Solid understanding of UI/UX principles, performance optimization, and responsive design for Android applications.

Additional Requirements

• Experience using AI-assisted development tools to improve software development productivity and code quality.
• Excellent problem-solving skills, communication, and the ability to work in a collaborative, fast-paced environment.

Nice to Have:

• Experience with payment gateways, PCI compliance, or fintech/transactional systems.
• Familiarity with EV charging standards or IoT ecosystems.
• Experience building products or systems from scratch (0-to-1).

Founded in 2005, Nayax provides an end-to-end platform for payments, empowers businesses to grow revenue, reduce operational costs, and deliver seamless commerce experiences. Our customer-first mindset and commitment to in-house innovation have positioned us at the forefront of the cashless payment revolution, serving the unattended and retail sectors around the world.

We support over 80 payment methods in 60+ currencies, hold a European payment institution license, and have formed strategic partnerships with global financial institutions to deliver powerful, scalable solutions.

With more than 1,200 employees across 12 global offices, Nayax operates in 120+ countries. Our global headquarters in Herzliya Hills, Israel, is our largest site, housing over 600 employees across 20+ departments.

At Nayax, we believe in creating long-term impact through loyalty tools, omnichannel solutions, and an agile ecosystem of value-added services. We're proud to support businesses in reaching new heights and we're always looking for innovative, passionate individuals to join us.