java backend software engineer jobs in Ottawa

Company Description askpolly transforms large-scale human conversation into actionable insights. By leveraging AI and patented statistical models to analyze organic social media data, askpolly provides near-instant, statistically valid insight into market reactions, election outcomes, and messaging strategy. We are moving beyond traditional polling to give...

Design, implement, and maintain software for nuclear systems, ensuring compliance with safety and regulatory standards.Develop software for reactor control, monitoring systems, data acquisition, simulation, and predictive analytics.Collaborate with multidisciplinary teams including nuclear engineers, electrical engineers, and safety specialists.Apply best...

$60 - $65 Grow your career with an innovative global bank in Mississauga, ON as aSenior Forward Deployed Java Engineer in Test (SDET) / Quality Engineering Architect to define, champion, and drive the global quality engineering strategy across multi-tier, high-throughput trading platforms. Contract role with strong possibility of extension and conversion to...

Build secure backend systems in Python and Rust for AuraNet from Ottawa or Toronto, supporting real-time data across disconnected environments.As a Senior Software Engineer Backend, you will design distributed systems for Dominion Dynamics’ mesh networking platform. The work spans networking, security, containers, and autonomous platforms. You will own an...

Lead Java and Scala development for Fujitsu's Virtuora Network Controller, working remotely in Canada across advanced SDN applications and architecture.This experienced lead software engineer transforms complex requirements into extendable software architecture, designs, and data models. You will guide SDN applications spanning PCE, service orchestration,...

Build autonomous-agent evaluations remotely with OpenClaw, backend engineering, and AI automation experience on a flexible freelance schedule.Outlier is seeking contributors to help train large language models as proactive, multi-step agents. The work focuses on architectural workflows, live system interactions, and detailed technical feedback. Applicants...

Affirm is seeking a software engineer for the Streaming team in Ottawa. You will design and scale data infrastructure, build backend services, and collaborate across product, design and analytics to ship features that rely on Kafka, Flink and AWS.You will participate in ideation, articulate constraints, and help manage trade-offs with stakeholders while...

Build secure identity services at Affirm using Python or Kotlin while working remotely from eligible Canadian provinces. Authentication is central to this customer-facing engineering work. As a mid-engineering Software Engineer II in Information Security, you will contribute to customer identity and access management capabilities. You will develop backend...

Earn Up To $50/hr as an OpenClaw Agent BuilderShape the future of autonomous agents like OpenClaw. Freelance, remote, up to $50 USD/hr. Weekly payments.Trusted by 10,000+ software engineers worldwideMIN EXP REQUIRED2+ yearsPAY RATEUp to $50 USD/hrEarn Up To $50 USD/hr— Plus Additional IncentivesRates vary based on expertise and project requirements. Paid...

Elevate your career with Akamai as a Senior II Software Engineer in Cloud Data Services. Work on cutting-edge technology with a diverse, multinational team to develop high-scale data services. As a Senior II Software Engineer, you will design, build, and maintain backend data services and APIs for high-throughput workloads, ensuring alignment with DBA and...

Build reliable applications at Sun Life using full-stack Java, Spring, React, and native iOS development in a hybrid work model. Support web, mobile, API, and middleware layers across the application lifecycle. As a Senior Software Engineer, you will develop and support applications within Sun Life’s e-Business team and Application Operations Support. The...

Build secure identity services at Affirm using Python or Kotlin while working remotely from eligible Canadian provinces. Authentication is central to this customer-facing engineering work.As a mid-engineering Software Engineer II in Information Security, you will contribute to customer identity and access management capabilities. You will develop backend...

HHHub.eu, a FinTech software provider with over 25 years of experience, seeks a Senior .NET Engineer – Banking & Payments to design and develop backend systems for core banking, account management, and payment processing. You will contribute across the software lifecycle, mentor peers, and participate in architecture discussions, code reviews, and CI/CD...

Responsibilities We’re looking for a Staff Software Engineer (Product) to help shape the technical evolution of our product. This is a senior individual contributor role focused on building high-quality product systems, making sound technical decisions, and supporting other engineers through collaboration and example This role is hands-on and does not...

High Tech Genesis (HTG) is seeking a Backend Engineer, Data Engineering to join a backend-focused data engineering team. The role focuses on processing large volumes of data and delivering reliable, structured datasets for downstream systems.The ideal candidate has strong backend and data-processing experience with Scala and Java as core technologies; Ruby...

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...

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...

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...

Who We Are Verily Health is a data platform and technology company purpose-built to power AI-enabled precision health solutions that accelerate research and improve care for individuals and communities. Uniquely positioned at the intersection of technology, data science, and healthcare, Verily transforms multimodal health data into insights, models, and...