java backend engineer jobs in Montreal

Architect high-throughput REST APIs with Python and Flask at Akamai, supporting resilient backend infrastructure for enterprise security platforms. As a Senior II Software Engineer, you will lead architecture, design, and implementation for high-performance backend systems. You will establish API standards, improve performance, and advance fault-tolerant...

At the company, our purpose is to serve and connect. We aim to achieve this by cultivating a work environment where all team members belong and have the opportunity to thrive. the company’s Bikes & Scooters team is developing the future of micro-mobility and we are looking for a solid, experienced Software Engineer to join our Stations Software Platform...

At Affim, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most. As we build Affim's advertising platform and evolve Marketplace into a best in class shopping destination, the ability to route and discover is one of the greatest levers for...

Build Elastic Cloud offerings through backend engineering, technical design, and sophisticated debugging with Scala, Java, or Go. Work within a globally distributed team of engineers.This Senior Software Engineer role supports Elastic’s Control Plane - Hosted team and key functional areas of its Cloud offerings. You will analyze system strengths and...

Design scalable backend systems for payment protection as a Senior Engineer, working fully remotely from Canada with fraud prevention expertise. Build reliable automation for disputes and risk management.This Senior Backend Engineer role focuses on payment dispute management, fraud prevention, and risk automation. You will own systems through architecture,...

Overview The Lead Backend Engineer on the AI Platform team plays a critical role in building, evolving, and leading the backend systems and engineering practices that power internal products, customer‑facing capabilities, AI‑enabled workflows, and operational decision‑making across the organization. This role combines hands‑on backend engineering...

Remote CanadaAt affirm, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most.The streaming team at affirm is responsible for all things data and drives the strategy for event driven architecture, stream processing, data exploration, discovery...

At Affid, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most.As we build affirm's advertising platform and evolve Marketplace into a best in class shopping destination, the ability to route and discover is one of the greatest levers for...

Bayview Asset Management, LLC is seeking a Backend Engineer for the AI Platform team to design, build, test, and operate scalable backend services powering internal products and AI-enabled workflows.You will develop APIs, ensure reliability, and deploy on major clouds, collaborating with product, data, and AI teams in a regulated environment. This fully...

Build AI platform infrastructure with Python or Kotlin as a remote Senior Backend Engineer at Affirm, serving teams and production workloads.This senior-level role owns technical decisions and projects across design, launch, and on-call. You will build highly available distributed systems using AWS, MySQL, and Kubernetes. Your work supports LLM gateways,...

Build AI Platform services remotely from Canada using Python or Kotlin, distributed systems expertise, and production LLM experience. Support affirm’s global infrastructure.As a Senior Software Engineer, Backend, you will design and launch governed AI systems for affirm engineers and production workloads. You will work with AWS, MySQL, Kubernetes, LLM...

Build scalable backend systems for Lime’s connected vehicles as a remote Software Engineer based in Canada, using data and strong architecture skills.As a Backend Software Engineer, you will create technology supporting electric vehicles, location and asset data analysis, experimentation, and Lime’s internal messaging platform. The work calls for...

As a Senior Engineer on Tempo, you will own technical direction on the hardest problems in our roadmap and raise the bar across the team Deliver significant technical projects. Take well-scoped, multi-month initiatives from problem framing through rollout, e.g., trace aggregation APIs, Limitless Tempo, autoscaling cells and customer limits, or query engine...

# Senior Backend Engineer, Deployment EnvironmentsGitLabSalary not statedFull-timeremote· seniorCanada, UKkubernetesListed via Jobicy · posted 31 Oct 2026. The application happens there, not on DevConnect.Apply on Jobicy## DescriptionGitLab is the intelligent orchestration platform for DevSecOps. GitLab enables organizations to increase developer...

At Affi, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most.The Streaming team at Affi is responsible for all things data and drives the strategy for event driven architecture, stream processing, data exploration, discovery and validation. We...

A payment technology leader is seeking a Senior Software Engineer to join their fully remote team. This role focuses primarily on backend development, maintaining and enhancing payment processing systems while collaborating with various teams. The ideal candidate should have over 5 years of software development experience, strong skills in API design and...

Build scalable campaign infrastructure remotely from Canada using Python or Ruby, distributed systems expertise, and modern backend engineering practices.This Senior Backend Developer joins the Campaigns Team within a collaborative engineering group. You will develop large-scale backend applications supporting personalized, multi-channel marketing campaigns....

Architect AI-powered restaurant intelligence systems as a Senior Backend Engineer, using Node.js, TypeScript, distributed systems, and scalable data pipelines remotely from Canada.This Senior / Staff Backend Engineer owns Grader’s architecture and technical direction. You will build customer-facing services, event-driven workflows, and data systems...

At Affirm, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters mostYour role will be instrumental in designing the next generation of Affirm’s Checkout Platform to provide a world‑class buying experience that puts customers first!We...

Build scalable backend services with AWS and Python for an AI-driven risk intelligence platform, with flexible hybrid Montreal or remote work options.As a Senior Software Engineer, you will develop production backend services and RESTful APIs. You will optimize data processing workflows, database architecture, and cloud infrastructure. Your work supports...