java backend engineer jobs in Montreal

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...

A Senior/Staff Software Engineer role is available for a rapidly growing tech company developing AI-powered voice agent infrastructure. The team is building a purpose-built database for conversational AI data and scalable infrastructure to support tens of thousands to hundreds of thousands of concurrent voice calls.You will own backend services in...

Sardine is hiring a backend-focused Senior Software Engineer to design, build, and scale APIs and services across our engineering teams in a remote-first setting serving Canada. You will craft robust backend systems and data pipelines, collaborating with stakeholders to deliver high-value features.You will contribute to product roadmaps, document technical...

BiblioCommons, a Toronto-based software company powering libraries, seeks a Senior Backend Engineer to build scalable platforms for millions of users and to drive AI-enabled development within the team.You will design, implement, and own critical backend services, lead projects, and mentor engineers while collaborating across product, data, and platform...

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...

## DescriptionCresta 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...

Affirm, Inc. seeks a Staff Engineer to lead the Fraud Decisioning team, shaping architecture and delivering scalable fraud-fighting systems. You will collaborate with Product, ML, Analytics, and Business teams to define and deliver high-impact initiatives, mentoring engineers and enforcing best practices.The role emphasizes designing modular solutions,...

A leading technology company located in Ontario is seeking an experienced backend developer to architect and scale the backend infrastructure supporting its research and AI platforms. The ideal candidate has over 5 years of backend development experience and is proficient in Node.js, Python, or Go. The role involves developing scalable systems, managing...

Senior Backend Engineer, Core DevOps: Container RegistryRemote, Canada; Remote, United StatesGitLab is the intelligent orchestration platform for DevSecOps. GitLab enables organizations to increase developer productivity, improve operational efficiency, reduce security and compliance risk, and accelerate digital transformation. More than 50 million...

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...

Sardine is seeking a backend-focused Senior Software Engineer who will design, build, and maintain scalable APIs and services across the engineering team. The role emphasizes fintech domain knowledge, data pipelines, and strong collaboration with product teams.Ideal candidates have 7+ years in web backend development, proven production delivery, and...

A healthcare technology platform is seeking a Full-time Software Engineer to craft solutions that reshape the connection between healthcare professionals and facilities. You will collaborate with product managers to build impactful features and work within a dynamic remote team. Ideal candidates will have expertise in TypeScript and Node/NestJS, with a focus...

Cresta is on a mission to turn every customer conversation into a competitive advantage by unlocking the true potential of the contact center. Our platform combines the best of AI and human intelligence to help contact centers discover customer insights and behavioral best practices, automate conversations and inefficient processes, and empower every team...

A tech company in Vancouver is looking for a Senior Backend Engineer to design and implement robust backend systems that ensure applications are secure and efficient. The position involves collaborating with DevOps and frontend teams while managing cloud infrastructure using AWS and Kubernetes. Candidates should have over 5 years of experience in backend...

Camunda is seeking a Backend Senior Software Engineer on the Data Layer team to advance storage and query capabilities for Camunda 8’s process data, spanning relational databases and Elasticsearch/OpenSearch. You will shape data pipelines, improve retention, and ensure scale and reliability across production systems.You will collaborate with product,...

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,...

IBM Software is seeking a Software Developer: Generalist to design, develop, test, and deliver offerings using leading-edge and proven technologies. You will work in an Agile, collaborative environment to understand stakeholder requirements and contribute to the development of innovative software solutions.This is a Remote Role. The position requires a...

# Backend Engineer, Create: Source Code Experience (Ruby)GitLabSalary not statedFull-timeremote· midCanadarubygraphqlListed via Jobicy · posted 20 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...