Senior Backend Developer - Core

4 hours ago

Apply Now

Receive Emails with Similar Jobs

Paxful

WebsiteLinkedInAll Job Openings

bitcoin • buy bitcoin • sell bitcoin • accept bitcoin • cryptocurrency

51 - 200 employees

Founded 2015

💳 Fintech

💸 Finance

₿ Crypto

Description

Paxful is the world’s largest people-powered marketplace, connecting over 14 million users across 140+ countries to move, save, and store money - even without a bank account. • The Senior Backend Developer is responsible for designing, developing, and maintaining the backend services that power Paxful’s marketplace, focusing on high-performance systems and scalable architecture. • This role requires strong expertise in Java, a deep understanding of microservices, and the ability to contribute to complex system designs. • You’ll work closely with cross-functional teams, including frontend, mobile, and DevOps, to ensure the platform remains secure, reliable, and scalable as Paxful continues to grow. • What will you do: • Design and develop backend services primarily using PHP, with secondary contributions in Go and Node.js. • Build and maintain RESTful APIs that integrate seamlessly with frontend, mobile, and blockchain systems. • Collaborate with product managers, frontend, and mobile teams to define requirements and deliver new features. • Ensure backend services are scalable, secure, and optimized for high performance. • Debug and troubleshoot production issues to maintain platform reliability. • Contribute to the migration of legacy PHP systems to modern architectures and service-based designs. • Implement and optimize database queries for high availability and low latency. • Write robust unit and integration tests to maintain code quality. • Contribute to the development of microservices using Go and Node.js as needed. • Work closely with the DevOps team to deploy and monitor services using Kubernetes and Terraform. • Participate in peer code reviews and mentor junior developers to promote best practices. • Who you are: • A backend developer with deep expertise in PHP and a strong foundation in Go and Node.js. • A problem solver with a passion for building scalable and efficient systems. • A collaborative team player who thrives in cross-functional environments. • Excited to contribute to challenging projects in the fintech and crypto space.

Requirements

What we are looking for: • 5+ years of backend development experience, with strong expertise in PHP (preferably PHP 7.4+). • Familiarity with frameworks like Laravel or Symfony. • Experience with Go and Node.js for developing microservices and handling event-driven systems. • Ability to contribute across multiple languages as needed. • Proficiency in database management. • Experience with SQL (PostgreSQL, MySQL) and familiarity with NoSQL databases like MongoDB. • Experience with RESTful API design and development. • Knowledge of API integration, versioning, and optimization. • Familiarity with CI/CD pipelines and DevOps workflows. • Hands-on experience with GitLab, Docker, and Kubernetes. • Understanding of secure backend development practices. • Familiarity with authentication mechanisms like OAuth, JWT, and API key management. • Recommended Skills: • Experience with message queues (e.g., RabbitMQ, Kafka) for asynchronous processing. • Familiarity with monitoring and logging tools (e.g., Prometheus, Grafana, ELK Stack). • Knowledge of blockchain and cryptocurrency-related systems. • Background in performance optimization for high-traffic platforms. • Contributions to open-source projects or technical communities.

Benefits

We encourage a remote-first approach for geographically distributed teams, being open to skilled professionals from around the world. • Competitive salary • Fully remote work environment • Flexible working hours with a 4-hour overlap in Eastern Time (EST) • Opportunity to work with cutting-edge technologies on impactful projects • Collaborative, innovative, and supportive work culture • Opportunity to mentor and lead a team of talented engineers • Professional growth and development opportunities