java backend engineer jobs in Montreal

Affirm’s engineering team is building large-scale, fault-tolerant, global infrastructure shared across multiple financial products, merchants, and vendors. Making this infrastructure transparently available to all engineers is critical to the business. The engineering culture emphasizes blameless postmortems, detailed technical specifications, and...

We are seeking a Senior Full Stack Java Developer, preferably with exposure to cloud architectures and public cloud offerings, to join our team in building a resilient, scalable, and secure cloud-based settlement platform. You will participate in requirements refinement, architecture, design, and implementation—writing code, building automated tests, and...

Highspring is a next-generation consulting and professional services firm. We deliver modern, agile, and forward-thinking solutions to clients across North America. Our teams partner with leading organizations to solve complex business challenges through technology, innovation, and expertise.At Highspring, we believe in empowering our people, fostering...

A technology firm is seeking a Senior Full Stack Java Developer to focus on building a cloud-based settlement platform. The ideal candidate will have strong experience with distributed systems, Java, Spring frameworks, and DevOps practices. This role involves actively participating in requirements refinement, designing scalable applications, and maintaining...

Senior Full Stack Java / React Developer — Payments Transformation, Bank, MontrealJava + React on a banking payments platform: Spring Boot microservices, JMS/IBM MQ/Kafka integrations, AWS Cloud. Hybrid, Montreal.Within a major Canadian bank, you join a team dedicated to commercial transformation and payments. You build Java microservices (Spring Boot) and...

Abbeal is seeking an Intermediate Java Developer for a major Canadian bank in Montreal. The role combines backend Java/Spring Boot work with data validation and profiling, including CI/CD via Maven, GitHub Actions, and Harness.2 days on-site in Montreal, hybrid arrangement, with a 12-month renewal leading to permanent placement. Candidate will also work with...

Affim is building the next generation of enterprise Identity and Access Management. This remote-first role combines IAM operations, automation, and production software engineering to improve reliability, scalability, and operability of identity services across internal systems. You will run core access lifecycle processes and build backend services that...

Kake is a remote-first company and a people-first global community of senior engineers. Kake engineers are behind some of the world’s most innovative products (Brands you’ve heard!), from Fortune 500 to fast-growing companies. We believe it’s not where your table is, but what you bring to the table that matters. Our community spans 45,000+ engineers...

Founded in 1998, Octasic is a privately held company headquartered in Montreal, Canada, with Research and Development facilities in Canada and India and a global sales support network. Octasic is a leading provider of SoCs (System on Chip), software and hardware integrated platforms for the global wireless and multimedia gateway markets. Our hardware and...

AutoScale Ventures is seeking a Senior Software Engineer to design, build, and evolve backend systems powering data-heavy products like VinAudit.ca and SquidProxies.com. You will own key backend initiatives end-to-end, mentor peers, and collaborate on architectural decisions to improve reliability and performance. The role emphasizes autonomy and ownership,...

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 engineering team is building a large-scale, highly-available, and global infrastructure that is shared across multiple financial products. Ensuring that our infrastructure...

Akamai's Cloud Data Services team designs, builds, and operates high-reliability, high-scale data services and pipelines powering core Akamai platform capabilities. The Senior II Software Engineer will own backend data services end-to-end, scale microservices, and collaborate with DBA and SRE partners to ensure performance and reliability across...

Plusgrade Travel is seeking a Senior Software Developer in Montreal to own the backend layer powering AI-driven pricing and fulfillment. You will split time between delivering production-ready features and exploring innovative AI concepts in our Labs group, shaping how AI integrates into our operating model and infrastructure. You will collaborate with...

Kake, a remote-first, people-first global community of engineers, seeks Senior Backend Engineers. You will own backend services in TypeScript, Python, or C#, and shape APIs and data models for high-scale systems. You'll collaborate with product and frontend teams, emphasize clean code, testing, and observability, and operate in a flexible, global remote...

Wissen Technology is seeking a Python Backend Engineer for Montreal, QC, with a strong focus on FastAPI, asynchronous programming, and scalable backend design. You will build RESTful APIs and microservices, collaborate across teams, and optimize performance in a hybrid, onsite Swiss-style setting.The role requires 7+ years of experience, deep Python...

Senior Staff Software Engineer, Backend (Compute Platform) 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 engineering team is building a large-scale, highly-available, and global infrastructure that is...

A technology firm is hiring a Senior Full Stack Engineer (Backend-Leaning) with a strong focus on backend services and AI applications. The ideal candidate will have experience in building agent-based applications and API integrations, along with a hands-on mindset for AI implementations. Strong collaboration skills with product and engineering teams are...

Cresta is seeking a Senior Backend Engineer for the Platform Team to build scalable, real-time backend services that power enterprise integrations. You will design and optimize the authentication stack, and ensure secure, low-latency data paths across chat and email integrations.You will work with frontend, ML, and infra teams to deliver robust auth and...

Cresta unlocks the true potential of the customer experience, turning every conversation into a competitive advantage. Cresta’s unified AI platform combines conversational AI agents, real-time human agent augmentation, and comprehensive conversation intelligence to drive revenue and efficiency gains across every channel. The world’s leading companies,...

A technology company is seeking a Senior Backend Engineer who will be responsible for designing and implementing robust backend systems. You will work closely with DevOps and frontend teams to deliver scalable applications leveraging AWS cloud services and Kubernetes. The role requires a minimum of 5 years of backend development experience, proficiency in...