java backend engineer jobs in Montreal

A leading payment technology provider is seeking a Senior Software Engineer to join their team. This backend-focused role involves architecting and developing high-quality software solutions for payment processing systems. The ideal candidate has over 5 years of experience in software development, especially within the fintech sector. The position offers a...

Unity Technologies Canada à Montréal recherche un développeur logiciel sénior pour orienter les passerelles API et bâtir des services cloud à grande échelle. Vous travaillerez sur l’architecture, l’exploitation et les choix techniques influençant de nombreuses équipes internes et externes. Vous prioriserez la maintenabilité, la résilience et...

Epistemix seeks a Senior Back-End Software Engineer to join our Canada, United Kingdom, and United States team. You will design, build, and maintain scalable services using Python, FastAPI, and TypeScript for backend work, with a strong focus on reliability.You will own the software lifecycle from requirements to deployment, collaborate across teams, and...

Senior Software Engineer, Backend (AI Platform) Remote Canada 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...

Location: Canada (Remote-friendly) Start date: ASAP Languages: English (required), French (strong plus) Databases: PostgreSQL, MongoDB About The Role Pragmatike is hiring on behalf of a fast-growing, product-driven technology company building data-intensive platforms used at scale across multiple markets. The product focuses on automation, data extraction,...

Who we are: Sardine is the leading agentic risk platform for fighting financial crime. Our integrated solution unifies data across risk teams to help organizations stop fraud in real time, prevent AI-driven attacks, and automate fraud and AML operations. Sardine’s platform is strengthened by one of the fastest-growing fraud consortiums in the market,...

Affirm is seeking a Senior Software Engineer for the Consumer Authentication Platform. The role focuses on building secure, reliable authentication experiences across millions of users and merchants, spanning sign-up, sign-in, account recovery, and step-up challenges.You will lead architectural initiatives and deliver reusable authentication capabilities...

Affirm, Inc. is seeking a Senior Software Engineer to build data and measurement foundations that connect consumer acquisition activity to outcomes like signup, conversion, and GMV.You’ll work at the intersection of data engineering and marketing technology, delivering reliable pipelines and identity/event systems. You will collaborate with Engineering,...

Identity Engineering owns the systems responsible for onboarding all consumers and managing their authentication and verification journeys across  Affirm's product surfacesIn 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...

Camunda is the enterprise platform for agentic orchestration, enabling organizations to coordinate AI agents, people, and systems across complex, end-to-end business processes. With built-in governance, auditability, and human oversight, Camunda gives enterprises the control they need to move AI from pilots to production – safely and at scale. Trusted by...

Camunda is the enterprise platform for agentic orchestration, enabling organizations to coordinate AI agents, people, and systems across complex, end-to-end business processes. With built-in governance, auditability, and human oversight, Camunda gives enterprises the control they need to move AI from pilots to production — safely and at scale. Trusted by...

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.Marketing & Privacy Engineering (MPE) builds trusted, privacy-aware consumer web experiences and measurement systems that enable sustainable growth. Within MPE, the Marketing...

Société Générale recherche des stagiaires VIE à Montréal, niveau Master, pour développer des applications Java, Angular et APIs dans un environnement international. Le poste implique une collaboration directe avec les équipes Front Office, Trading et Middle Office et nécessite des compétences en programmation orientée objet et développement...

Full-timeCompany DescriptionMiratech helps visionaries change the world. We are a global IT services and consulting company that brings together enterprise and start-up innovation. Today, we support digital transformation for some of the world's largest enterprises. By partnering with both large and small players, we stay at the leading edge of technology,...

EXFO Inc. is seeking a Senior Backend Software Developer to design, develop, and evolve backend services powering its fiber monitoring platforms. You will work on distributed systems, API-driven services, and data pipelines in production-scale environments.The role emphasizes autonomy, end-to-end ownership, and collaboration with Product, QA, and DevOps...

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...

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...

# Senior Software Engineer, Backend - Platform TeamCrestaSalary not statedFull-timeremote· seniorCanada, USAgrpcllmkubernetesdockerawsgcpazureListed via Jobicy · posted 14 Oct 2026. The application happens there, not on DevConnect.Apply on Jobicy## DescriptionCresta unlocks the true potential of the customer experience, turning every conversation into a...

Affrim is seeking a Staff Software Engineer to be the technical lead for Observability. You’ll spend most of your time hands‑on while defining the roadmap, driving cross‑functional projects, mentoring a team of six engineers, and partnering closely with infrastructure and product teams.You will own the architecture of Affrim’s telemetry pipeline,...

Staff Software Engineer, Backend (Identity Decisioning) Remote Canada At Affirma, 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...