java backend engineer jobs in Montreal

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...

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...

## 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...

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...

Java Python Software Engineer I – Montreal Do you enjoy being part of team that develops high-quality code? Do you enjoy ensuring the quality of software delivered? About our Team Our 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...

Miratech is seeking a Senior Full Stack Engineer to design, build, and support scalable cloud-native applications powering Workforce Management, CX, and operations. You will use Java and Spring Boot for backend services, React with TypeScript for front-end experiences, and Node.js for lightweight components. Experience with WFM, CX, or contact-center...

Développeur full stack expert Java, React et Kafka, écosystème de données client, MontréalConcevoir le front-end et les intégrations de données d’un écosystème de données client dans une grande banque canadienne : React et Redux, API, microservices et Kafka. CDI Abbeal de préférence, Montréal hybride.L’équipe responsable de l’écosystème...

KellyOCG in Montreal is seeking a senior, hands-on software developer to design, build, and maintain business applications. You’ll work across application development and production support, contribute to technical design, and help deliver reliable, secure software from development through deployment.The role requires 12+ years of experience with Java...

Compunnel, Inc. is seeking a senior Java engineer to design, build, and deliver enterprise-scale microservices in a multi-tier environment. You will collaborate with global teams, implement RESTful APIs, and ensure architectural alignment.Strong Java, React/Angular, databases, and Kubernetes experience are essential for success. The role emphasizes SDLC...

United Software Group Inc is seeking a Senior Java Backend Engineer to design and build core Market Risk platform components in Core Java. The role involves developing scalable risk calculation systems, applying AI tooling to support analytics, and mentoring junior developers within a global, Agile team.Candidate should have deep Java backend experience and...

Intact Financial Corporation is seeking a Senior Generalist Software Developer – Full Stack Java/Angular to join our growing team in a hybrid work environment. You will be involved in every stage of the project, from understanding business needs to delivering robust solutions.You will provide technical direction, make recommendations, and support the team...

COFOMO recherche un ingénieur logiciel cloud expérimenté à Montréal pour concevoir et développer des applications cloud natives sur AWS, en mettant en œuvre des pipelines CI/CD et les meilleures pratiques de sécurité.Vous utiliserez Python pour le back-end, HTTP API et bases de données relationnelles/NoSQL, tout en tirant parti de GitHub Copilot et...