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)