java backend engineer jobs in Montreal

Affirm, Inc. seeks a Staff Cost Engineer to lead cost governance across a multi-cloud and multi-AI-vendor footprint. You will drive tooling and automation to turn spend questions into durable, self-service systems, working at the intersection of finance, infra and data engineering.You will set the technical direction, influence cost strategy with leaders,...

Outlier is seeking a skilled OpenClaw Agent Builder for remote freelance work. Shape autonomous agents, build and evaluate multi-step workflows, and help train LLMs with real-world tasks. Weekly payments and flexible hours are available.Ideal candidates bring 2+ years in backend engineering or AI automation, with experience deploying production-grade...

Staff Software Engineer, Backend (Identity Decisioning) Remote Canada 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. Affirm’s Identity team is mission‑critical to the customer checkout experience. When a customer chooses...

At AffiWe exist for the moments that matter—giving people a clear,predictable way to pay over time, with no hidden fees, no surprises, and no radeoffs on what matters most.Your role will be instrumental in designing the next generation ofAffirm’s Checkout Platform to provide a world-class buying experience that puts customersfirst!We are seeking a...

Grafana Cloud is a composable observability platform that integrates metrics, logs, traces, and profiles with Grafana. It lets customers use open-source observability software- including Prometheus, Mimir, Loki, Tempo, and Pyroscope as a Cloud service or on-premise solution without the overhead of installing, maintaining, and scaling their own observability...

Outlier is seeking skilled contributors to build OpenClaw-like autonomous agent components. Remote freelance role with pay up to $50 USD/hour. You can set your own schedule, typically 5–10 hours/week, potentially up to 40 hours. Payments are made weekly and via multiple payment methods.Ideal candidates have 2+ years in backend engineering or AI automation...

Ready to do the most impactful work of your career? At Coinbase, we are uncompromising on our mission to increase economic freedom. The bar is high, the environment is intense, and we like it that way. This isn't a place for complacency, it’s a place to be pushed past your perceived limits. If you're ready to build the future of finance alongside people...

Affirm, Inc. is seeking an experienced Capacity Modeling Engineer to own quarterly goals for the team and lead engineers through ambiguity while delivering capacity plans for peak sales events. You will translate demand forecasts into resource settings across regions and environments.You will collaborate with product, design and analytics, establish reliable...

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 most. Affirm's engineering team is building a large-scale, fault-tolerant, and global infrastructure that is shared across multiple financial products, merchants, and vendors. Ensuring...

Outlier is seeking OpenClaw Agent Builder contractors to help shape autonomous agents. This remote, freelance role offers up to $50 USD/hr with flexible, non-mandatory hours and weekly payments. Contributions support AI development and multi-step agent orchestration.Ideal candidates have 2+ years in backend engineering or AI automation, with a track record...

Company Description: FluidAI is specialized in the development and deployment of data-driven surgical solutions, with an initial focus on general and gastrointestinal surgery. Our technologies integrate medical devices, software, and artificial intelligence into platforms that address real clinical and operational challenges across the continuum of surgical...

Affirm, Inc. is building the next generation of customer identity and authentication. This remote-first role sits in Information Security, contributing to core CIAM capabilities that protect customers and support growth.You will help build backend services powering registration, login, authorization, and account lifecycle across B2C and B2B experiences,...

Movable Ink seeks a Senior Backend Developer to lead the evolution of our AI-driven, distributed recommendations engine. You will design scalable services for content personalization, collaborate across ML and product teams, and own components from architecture to deployment.You will mentor engineers, uphold coding standards, and drive observability and...

At Aff, 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 Capacity Modeling team ensures Aff**irm can safely handle forecasted traffic—especially during peak sales events—by translating demand forecasts into concrete, testable...

Sardine is seeking a backend-focused Senior Software Engineer to design, build, and maintain scalable APIs and services across our engineering teams. You will contribute to large-scale features, improve internal tooling, and help shape product and technical roadmaps in a fast-growing fintech environment.Ideal candidates have 7+ years in web backend...

Software DeveloperPour la version française de cette description de poste, veuillez consulter le lien suivant / For the French version of this job description, please refer to the following link:Développeur/Développeuse LogicielAbout AppDirectBecome a digital, global citizen and enable the new generation of digital entrepreneurs around the world....

Akkodis recherche un développeur Java intermédiaire et analyste de données pour Montréal, QC, en mode hybride (2 jours sur site par semaine). Contrat d’un an renouvelable avec possibilité de conversion en poste permanent.Le candidat contribuera au développement d’applications .NET et à l’analyse de données, en collaboration avec les équipes...

Java Python Software Engineer I – MontrealDo you enjoy being part of team that develops high-quality code? Do you enjoy ensuring the quality of software delivered?About our TeamOur Technology teams uses cutting-edge technologies to build products and systems to advance science and health. We provide our customers with powerful digital solutions, helping...

Overview Modes is a digital transformation and organizational design collective working with various clients throughout North America. Our focus is on financial services. We help clients plan, design and launch digital human-centred experiences that cater to users\' needs and deliver elegant solutions to challenging problems. We constantly seek top talent...

Identity Engineering owns the systems responsible for onboarding all consumers and managing their authentication and verification journeys acrossAffirm's product surfaces In this role, you will need to gain a deep understanding of the business, product and engineering context, and utilize that context to own and deliver high-availability and low-latency...