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.

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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.

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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
  

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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
  

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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.

Department

Product & Engineering

Locations

Toronto, Canada, Remote Canada

Remote status

Hybrid

Yearly salary

CAD145,000 - CAD165,000