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Apptad Inc is hiring an onsite Senior Java & Spring Backend Engineer in Mississauga to design, develop, test, and maintain scalable enterprise applications. Day to day involves building backend services, microservices, and REST APIs on a Java/Spring stack with SQL databases.
Senior backend engineer at AMA (Alberta Motor Association) designing, building, and supporting cloud-native, serverless backend solutions, guiding AI coding agents, and integrating APIs with a security-forward mindset. Requires 5+ years of development experience and supports a hybrid model based in Edmonton.
Remote contract role (10-40 hrs/week) for a Senior Backend Engineer building and optimizing Python/FastAPI APIs, deploying scalable services on AWS with Kubernetes, and developing real-time systems using WebSockets and message queues.
Senior Java backend developer (6-12 years) designing Spring Boot microservices, REST/SOAP APIs, and JPA/Hibernate persistence layers, deployed via Docker/Kubernetes on Azure (DevOps, Redis, OAuth/JWT security). Must have experience using AI-assisted development tools like Copilot or Cursor.
Build and operate backend platform services in Go or Rust for Kaseya's Intelligence Platform — Kafka-based event routing, durable workflows with Temporal, secrets/KMS management, machine identity, and immutable audit infrastructure. Day-to-day is hands-on distributed systems work focused on security, reliability, and multi-tenancy.
Design and scale the real-time backend for a competitive multiplayer FPS: stateful game services, ELO-based matchmaking for 50K+ concurrent players, and transactional inventory/economy systems. Core stack includes Kubernetes, AWS game services, Redis, PostgreSQL, NodeJS/TypeScript, WebSockets/gRPC/UDP, plus game-backend platforms like PlayFab, Pragma, or AccelByte. Hybrid role based in Montreal.
TD, one of North America's largest banks, is hiring a Java backend developer in Toronto to architect and deliver scalable backend services and REST APIs. Day-to-day work centers on Java, Spring Boot, Hibernate, Kafka, and Oracle, with deployments to Microsoft Azure using EDP pipelines, Docker, Redis, and CI/CD tooling.
A senior Java developer designs, builds, and industrializes backend services (Java 17+/Spring Boot 3 REST microservices) that integrate AI agents, deployed in a containerized AWS environment with a DevOps culture. Hybrid role in Montreal supporting a major Canadian financial institution's AI agent initiatives.
Staff Software Engineer on Sony Interactive Entertainment's Adaptive Experiences Platform team in Waterloo: a hands-on technical lead defining the experiences SDK and modernizing the PS5 Store runtime into schema-driven, platform-independent UI composition using TypeScript/React across console, web, and mobile.
Backend software engineer at TD Bank designing, developing, and maintaining Java/Spring Boot services and RESTful APIs on Microsoft Azure — including testing, incident support, code reviews, and documentation. Core stack: Java, Spring Boot, Kafka, Oracle, Redis, Docker, Maven, and Azure EDP pipelines.
Senior Java Developer at CGI in Halifax designing and building mission-critical payment platforms. Day to day: developing Spring Boot microservices, OAuth-secured REST APIs, Kafka event-driven services, and Oracle/SQL Server/MongoDB data layers, while mentoring teams and driving code reviews, CI/CD, and Agile delivery.
An experienced Java developer builds and maintains scalable enterprise backend applications and microservices using Java, Spring Boot, REST APIs, and SQL databases, including unit testing, debugging, and production support in an onsite, full-time permanent role in Mississauga.
Graduate 'Alumni' program role: you complete 4-8 weeks of Java training at mthree Academy, then join a client (often tier-one investment banks) on-site for 12-24 months building Java/Spring Boot backend services and REST APIs, with most participants converting to permanent client employees.
Fully remote senior frontend developer building responsive, performant user interfaces with modern frameworks like React, Angular, or Vue.js. Day to day: translating design mockups into functional code, integrating backend REST APIs, optimizing across devices and browsers, and collaborating asynchronously with designers, PMs, and backend engineers.
Senior software engineer at RIVO Holdings in San Diego who designs, builds, and modernizes the company's proprietary LMS. Day-to-day is full-stack development and architecture work with .NET, C#, SQL Server, React, TypeScript, and Azure, plus CI/CD, monitoring, and mentoring responsibilities.
Senior backend developer owning Python enterprise applications end to end — building scalable REST APIs, web apps, and microservices with FastAPI, Django, or Flask, plus architecture, testing, mentoring, and production support. 10+ years of Python experience required; Azure cloud and Docker skills are a plus.
Remote manual QA engineer testing web and mobile applications: writing test cases and checklists, running regression, smoke and API testing, and catching bugs before production. Toolset includes Postman, Charles/Proxyman, DevTools, SQL, Jira, TestRail/Qase and Figma; ~6 months of manual testing experience is expected.
Senior full-stack engineer at clera in Munich building an AI platform for the SME sector: owning complex architecture like multi-terabyte data synchronization, secure code sandboxes, and high-volume LLM processing. Core stack includes React, TypeScript, tRPC, PostgreSQL, Docker, and Kubernetes.
Full Stack Engineer at clera, a bootstrapped AI product studio in Munich, building full-stack features (TypeScript/React) and the backend infrastructure behind large LLM workloads, terabyte-scale data sync, and secure code sandboxes. Hybrid role; candidates must already be based in Munich.
Backend engineer at clera, a pre-seed energy technology company in Berlin, building core infrastructure for dynamic electricity plans: a modular billing engine, accounting ledger, and energy-market integrations using TypeScript, Node.js, Next.js, and PostgreSQL. On-site five days per week.
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