backend engineer jobs in Ottawa

HTG is hiring a Backend Engineer, Data Engineering for an opportunity with one of our technology clients. The engineer will join a backend-focused data engineering team responsible for processing large volumes of field and system data and transforming it into useful, reliable data that can be consumed by other systems and engineering teams. A key focus of...

OverviewModes is a digital transformation and organizational design collective working with various clients throughout North America. Our focus is on financial services. We help clients plan, design and launch digital human-centred experiences that cater to users\' needs and deliver elegant solutions to challenging problems. We constantly seek top talent to...

Build scalable Java backend services remotely for Just Eat Takeaway.com from Alberta, Manitoba, or Ontario. Apply strong system design expertise. As a Senior Java Developer, you will support the Logistics Areas and Fees team. You will architect, develop, and operate distributed systems for delivery calculations. The work includes Java 21, REST APIs, message...

eleven-x is transforming the parking experience through its industry-leading parking technology: a sensor-based space-occupancy monitoring solution and comprehensive software platform that enables frictionless parking. Our solution includes our own hardware, firmware, network solutions, web applications, and mobile applications. Customers rely on our...

Earn Up To $50/hr as an OpenClaw Agent Builder Shape the future of autonomous agents like OpenClaw. Freelance, remote, up to $50 USD/hr. Weekly payments. Trusted by 10,000+ software engineers worldwide MIN EXP REQUIRED 2+ years PAY RATE Up to $50 USD/hr Earn Up To $50 USD/hr— Plus Additional Incentives Rates vary based on expertise and project...

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...

The Data and Storage Services team is responsible for affirm’s data infrastructure across OLTP and OLAP systems, spanning critical online checkout databases, batch orchestration, streaming infrastructure, event-driven frameworks, BI, analytics tooling, large-scale data platforms, and agentic data tools such as semantic layers and internal platform data...

Lead technical strategy as a Staff Backend Engineer with Affir in a remote setting. Leverage your expertise in Python or Kotlin to build scalable systems for Trust and Safety Foundations. In this remote role, you will take on crucial responsibilities in shaping technical strategies and managing major projects as part of the Checkout Engineering team. With...

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...

Build secure banking and payment backends as a Senior Java Engineer, using Spring Boot and distributed-system technologies in an international FinTech company. Our client is an established FinTech software provider with more than 25 years of experience. You will design, develop, test, deploy, and support Java backend services. The work covers REST APIs,...

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...

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...

At Aff, 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. The Capacity Modeling team ensures Aff**irm can safely handle forecasted traffic—especially during peak sales events—by translating demand forecasts into concrete, testable...

Affirm, Inc. is seeking a Senior Software Engineer to build data and measurement foundations that connect consumer acquisition activity to outcomes like signup, conversion, and GMV.You’ll work at the intersection of data engineering and marketing technology, delivering reliable pipelines and identity/event systems. You will collaborate with Engineering,...

This range is provided by Amuse. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range $85,000.00/yr - $105,000.00/yr Amuse is a platform that helps people discover local arts and culture. Think of it as your personal travel guide: but instead of trying to lecture you for an hour, it enriches...

Affirm, Inc. is seeking a senior engineer to own workload safety standards for its EKS fleet and drive end-to-end enforcement across the organization. You will lead design reviews, mentor engineers, and advance automation and guardrails to keep workloads compliant from day one. The role emphasizes deep Kubernetes expertise, Go or Python proficiency, and a...

The Data and Storage Services team is responsible for affirm’s data infrastructure across OLTP and OLAP systems, spanning critical online checkout databases, batch orchestration, streaming infrastructure, event-driven frameworks, BI, analytics tooling, large-scale data platforms, and agentic data tools such as semantic layers and internal platform data...

Affirm, Inc. is seeking a senior engineer to own workload safety standards for its EKS fleet and drive end-to-end enforcement across the organization.You will lead design reviews, mentor engineers, and advance automation and guardrails to keep workloads compliant from day one. The role emphasizes deep Kubernetes expertise, Go or Python proficiency, and a...

Affirm, Inc. is seeking a Senior Software Engineer to build data and measurement foundations that connect consumer acquisition activity to outcomes like signup, conversion, and GMV. You’ll work at the intersection of data engineering and marketing technology, delivering reliable pipelines and identity/event systems. You will collaborate with Engineering,...

The Capacity Modeling team ensures Aff**irm can safely handle forecasted traffic—especially during peak sales events—by translating demand forecasts into concrete, testable capacity plans. You will be responsible for owning and delivering quarterly goals for your team, leading engineers on your team through ambiguity to solve open-ended problems, and...