Remote Backend Developer Jobs in Toronto, ON (NOW HIRING)

While technology is the heart of our business, a global and diverse culture is the heart of our success. We love our people and we take pride in catering them to a culture built on transparency, diversity, integrity, learning and growth.
If working in an environment that encourages you to innovate and excel, not just in professional but personal life, interests you- you would enjoy your career with Quantiphi!

About Quantiphi:

Quantiphi is an award-winning, AI-First digital engineering and consulting company focused on delivering high-impact Services and Solutions that help organizations solve what truly matters. We partner with enterprises to reimagine their businesses through intelligent, scalable, and transformative AI driving measurable outcomes at the very core of their operations.

Since our founding in 2013, Quantiphi has tackled some of the world's most complex business challenges by combining deep industry expertise, disciplined cloud and data engineering practices, and cutting-edge applied AI research. Our work is rooted in delivering accelerated, quantifiable business value, not just technology for technology's sake.

Headquartered in Boston, Quantiphi is a global organization with 4,000+ professionals serving clients across key industry verticals, including BFSI, Healthcare & Life Sciences, CPG, MFG, TME etc. As an Elite and Premier partner to leading cloud and AI platforms such as NVIDIA, Google Cloud, AWS, and Snowflake, we build and deliver enterprise-grade AI services and solutions that create real-world impact.

We've been recognized with:

• 17x Google Cloud Partner of the Year awards in the last 8 years.

• 3x AWS AI/ML award wins.

• 3x NVIDIA Partner of the Year titles.

• 2x Snowflake Partner of the Year awards.

• We have also garnered top analyst recognitions from Gartner, ISG, and Everest Group.

• We offer first-in-class industry solutions across Healthcare, Financial Services, Consumer Goods, Manufacturing, and more, powered by cutting-edge Generative AI and Agentic AI accelerators.

• We have been certified as a Great Place to Work for the third year in a row- 2021, 2022, 2023.

Be part of a trailblazing team that's shaping the future of AI, ML, and cloud innovation.

Your next big opportunity starts here!

For more details, visit: Website or LinkedIn Page.

Role: Architect - Software Developer

Experience Level: 7+ yrs

Work Location: US East/Canada (Remote)

Role Overview:

We are seeking an Architect - Software Developer to lead the design and development of robust, scalable, and performant backend systems that power next-gen intelligent applications.

This architect will lead the design and implementation of backend service architecture and APIs for the Agentic platform. They'll define service contracts, work with customer teams to understand integration points (identity, health data, logging, observability), and steer an offshore backend development team building these services. Strong ownership of developer experience, API quality, and interoperability with legacy systems is critical.

Key Responsibilities:

• Architect and maintain reliable, versioned APIs with strong backward compatibility for internal and external integrations.

• Deliver scalable microservices and async systems designed for high throughput, low latency, and real-time streaming.

• Set engineering standards across API design, testing, documentation, and CI/CD automation.

• Guide backend and frontend teams by providing clear HLD/LLD artifacts, conducting peer reviews, and ensuring clean architecture adoption.

• Champion telemetry integrations logging, metrics, and tracing across services to enhance system observability and debuggability.

• Publish client SDKs, Postman collections, and developer-focused portals to ease service consumption and onboarding.

• Mentor engineers, drive architectural clarity, and align backend strategies with product vision.

• Collaborate with AI/ML teams to integrate agent orchestration frameworks and model-serving platforms.

Basic Qualifications:

• 7+ years of experience in Software Development

• Expertise in backend development using Python (FastAPI) and/or TypeScript (Node.js).

• Proven experience defining API contracts using OpenAPI, Swagger, gRPC, and Postman, with a strong contract-first development mindset.

• Deep understanding of microservices, event-driven and asynchronous system design, leveraging Kafka, RabbitMQ, or similar message brokers.

• Mastery of asynchronous programming, multiprocessing, and real-time streaming via WebSockets, Kafka streams, or media pipelines.

• Practical experience with cloud-native development (AWS, GCP, Azure), including autoscaling, serverless, API gateways, and managed databases.

• Hands-on experience with API lifecycle management authentication, versioning, rate limiting, and throttling.

• Deep commitment to automated testing strategies, including TDD/BDD, unit, integration, and contract testing.

• Strong command of CI/CD pipelines, environment promotion strategies, and infrastructure-as-code principles.

• Skilled at producing HLD/LLD documentation, UML/sequence diagrams, and applying relevant design patterns for system resilience and scalability.

• Ownership of software release cycles, ensuring zero-downtime deployments and rollback strategies.

• Familiarity with React, TypeScript, and JavaScript for building internal tools and agent configuration dashboards.

• Understanding of HTML5, CSS3, and UI development principles for user-centric AI interfaces.

Other Qualifications (OQs):

• Exposure to LLM orchestration (LangChain, LlamaIndex), prompt engineering, and tool-calling frameworks.

• Experience with RAG architectures, vector DBs (Milvus, Pinecone, PGVector), and MLOps frameworks (NVIDIA Triton, KServe).

• Understanding of Model Context Protocol (MCP) and Agent-to-Agent toolkits for advanced agent workflows.
  Clinical/life sciences exposure, including FHIR, clinical systems integration, or healthcare data privacy standards.

• Strong UX awareness to influence AI-driven product design and user journeys.

• End-to-end experience architecting AI-powered applications with measurable impact.
  

What's in it for YOU at Quantiphi:

• Make an impact at one of the world's fastest-growing AI-first digital engineering companies.

• Upskill and discover your potential as you solve complex challenges in cutting-edge areas of technology alongside passionate, talented colleagues.

• Work where innovation happens - work with disruptive innovators in a research-focused organization with 60+ patents filed across various disciplines.

• Stay ahead of the curve-immerse yourself in breakthrough AI, ML, data, and cloud technologies and gain exposure working with Fortune 500 companies.