Senior Backend Developer

What You'll Do

• Design and development of scalable, service-based architectures (front-end and back-end), while remaining hands-on in coding and delivery
• Architect and implement system integrations across internal services and third-party platforms (REST, GraphQL, event streams, webhooks, ETL pipelines)
• Collaborate with Product to translate business requirements into technical solutions, defining scope, complexity, and dependencies
• Drive development across teams for services built in Node.js, TypeScript, JavaScript, and Python
• Design and maintain API contracts, data models, and integration patterns to ensure consistency and reliability across systems
• Build and optimize secure, high-performance, and highly available systems
• Contribute to AI-enabled features and workflows, including integration of ML models, LLM APIs, or intelligent automation pipelines
• Partner with architects to define system design, integration strategies, and reusable frameworks
• Produce clear technical documentation (architecture diagrams, data flows, API specs, integration patterns)
• Establish and enforce best practices in code quality, testing, and deployment
• Lead code reviews, approve merges, and mentor engineers across teams
• Troubleshoot complex production issues and drive resolution across distributed systems
• Oversee the end-to-end lifecycle of feature development—from design through deployment and monitoring

What You Bring

• 5+ years of experience building scalable, production-grade software systems across front-end and back-end
• Bachelor’s degree in Computer Science or a related field
• Strong expertise in JavaScript and TypeScript
• Proven experience with Node.js and GraphQL (required)
• Deep experience building and consuming RESTful APIs and distributed services
• Strong proficiency with tools and technologies such as Python, Docker, Git, SQL, and cloud-native architectures
• Hands-on experience with GCP or AWS services (e.g., S3, CloudFront, EC2, RDS, Lambda, Batch)
• Experience designing and implementing system integrations (microservices, third-party APIs, event-driven architectures, messaging systems like Kafka/SQS)
• Ability to lead and deliver large, complex technical initiatives
• Strong understanding of software design patterns, system architecture, and data flow design
• Excellent communication skills, with the ability to articulate complex technical concepts clearly
• Experience working in Agile/Kanban environments and a strong understanding of the SDLC
• Adaptability and a proactive mindset in fast-paced, evolving environments

Nice to Have

• Experience working on or building tax, fintech, or compliance-related products (e.g., tax calculation engines, filing systems, regulatory platforms)
• Exposure to AI/ML engineering, including integrating LLM APIs, building data pipelines for ML workflows, or deploying AI-driven features
• Experience with data platforms, data pipelines, or analytics systems
• Familiarity with event-driven architectures and real-time data processing
• Experience designing multi-tenant or enterprise-grade SaaS platforms
• Background in integration-heavy environments (e.g., ERP, financial systems, external data providers)

Salary Range

• $100,000 - $140,000 (CAD)