Why you'll love this NUE opportunity! At Nue.io , we're on a mission to revolutionize revenue operations for modern businesses.

We’re looking for a Senior Full-Stack Engineer, Billing who’s passionate about building and scaling systems that drive meaningful business outcomes.

In this role, you’ll take ownership of architecture enhancement, technical design and development for billing & collection features , helping us scale to meet the demands of our growing customer base.

If you thrive on solving complex problems, collaborating across teams, and working with cutting-edge technologies, this opportunity is for you.

You’ll work with a variety of technologies such as Java, Node.js, React, AWS, Salesforce Platform, etc. , and play a central role in ensuring reliability, scalability, and performance across our systems.

Job Role and Responsibility

• Design and implement robust billing capabilities including invoicing, credit memo management, payments, collections, and taxation, ensuring accuracy and compliance across multiple revenue models (recurring, usage-based, milestone, one-time, credit-based).
• Build and scale transaction management to handle high-volume, high-fidelity financial events with strict ordering, idempotency, and auditability requirements.
• Develop data synchronization mechanisms between internal billing systems and external financial systems (e.g., ERP, payment gateways, tax engines) to ensure consistency, fault tolerance, and real-time visibility.
• Architect for scale and reliability, ensuring billing services can handle rapid customer growth, large data sets, and complex customer hierarchies without degradation in performance or data integrity.
• Extend APIs and infrastructure to support new features and customer use cases while maintaining backward compatibility
• Strengthen security and authentication frameworks in line with evolving customer and compliance requirements
• Automate testing and validation of billing scenarios, including proration, mid-term changes, renewals, and adjustments, to reduce regressions and increase confidence in deployments.
• Diagnose and resolve production issues, ensuring reliability and customer satisfaction
• Collaborate with cross-functional teams to align technical priorities with business objectives
• Leverage AI and automation to boost development velocity, quality, and innovation
• Stay informed of emerging technologies and industry best practices in billing, payments, and revenue operations, bringing fresh ideas to evolve the platform.

Required Skills And Experience

• Bachelor’s degree in Computer Science, Engineering, or equivalent practical experience
• 6+ years scaling production SaaS platforms or distributed systems
• 6+ years of experience with Java + Spring Boot
• Strong experience with relational databases like PostgreSQL, MySQL (performance optimization, sharding, indexing, etc.)
• Familiarity with NoSQL technologies (e.g., DynamoDB, MongoDB)
• Familiarity with Cache and Distributed Locks technologies (e.g., Redis, Memcached, ZooKeeper)
• Familiarity with event streaming systems (e.g., Kafka, RabbitMQ, AWS SQS/SNS)
• Proven expertise in API design and optimization
• Hands-on experience with profiling, debugging, and performance tuning tools
• Interest or experience in AI-assisted development and prompt engineering
• Excellent communication and collaboration skills
• Ability to thrive in a fast-paced, startup environment

Preferred Skills

• Experience with Salesforce
• Knowledge of Node.js, TypeScript, React
• Familiarity with cloud services (e.g., AWS, Azure, GCP)
• Domain experience in financial, billing or collection

What We Offer

• Competitive salary and benefits package.
• Opportunity to work in the dynamic and innovative Silicon Valley tech ecosystem.
• The chance to work on groundbreaking projects and influence the future of finance and payment systems.
• A collaborative and supportive team environment that encourages personal and professional growth.