backend engineer nodejs jobs in Ottawa

Affirm is a remote-first company building the money movement platform behind our card products. The Card Loan Platform team owns the high-throughput decision engine powering real-time approvals and lifecycle events for every swipe.We seek a seasoned engineering leader to shape system design, drive technical strategy, and mentor engineers across Product,...

A tech company specializing in event-driven architecture is seeking a Senior Software Developer to join their AI team. The role involves leading technical projects, creating robust APIs, and collaborating across functions to enhance product offerings. Candidates should have over 7 years of experience, strong backend development skills particularly in Python...

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 is a remote-first company building the money movement platform behind our card products. The Card Loan Platform team owns the high-throughput decision engine powering real-time approvals and lifecycle events for every swipe. We seek a seasoned engineering leader to shape system design, drive technical strategy, and mentor engineers across Product,...

The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we aren't beholden to any shareholders — only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their...

Apollo.io is seeking a Senior Software Engineer to join a fast‑growing team building data platform architecture and distributed integrations that scale. You will own backend services, data pipelines, and observability, collaborate with global teams, and bring an AI‑first mindset to coding, debugging, and deployment. The role offers remote and...

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 is seeking a backend software engineer for a remote position in Toronto. The role involves designing secure backend services, collaborating on API development, and working with modern frameworks. Candidates should have a minimum of 5 years experience, strong skills in Python or Go, and familiarity with PostgreSQL. This role...

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...

Affi, a remote-first company, is seeking a Senior Software Engineer to own backend systems at scale and to build data pipelines and measurement foundations for connected growth channels. You will work with Product, Marketing, Analytics, and Data Engineering to ensure consent, tagging, identity, and consumer-data requirements are incorporated from the...

Drive innovation as a Backend Software Engineer with Stripe's Revenue and Financial Automation team. This hybrid role focuses on designing future products that enhance payment solutions for businesses.As an engineer on the RFA team at Stripe, you will develop a cutting-edge financial management platform for companies. You will collaborate with...

Join ClickHouse as a Senior Backend Engineer focusing on the ClickPipes Platform, enhancing data onboarding solutions in a flexible remote environment. Work with cutting-edge technologies like Kubernetes and distributed systems to create impactful results.In this role, you'll leverage over five years of backend engineering expertise, applying skills in...

Alignerr is seeking a Back End Developer to design, build, and optimize server-side systems and APIs that power AI products, from data pipelines to scalable microservices handling real-world traffic.This is a fully remote hourly contract open to engineers in Montreal and across Canada. You’ll collaborate with researchers and product leads, write clean,...

At affirm, 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 Batch Developer Experience team makes batch development and testing faster and more reliable at affirm. As a developer on this team you will partner with product and...

Elevate your career at Affirm as a Senior Backend Software Engineer focused on online storage and database technologies. This remote role enables you to design, optimize, and manage large-scale SQL databases with a strong emphasis on reliability and performance.Affirm is seeking a talented Senior Software Engineer to enhance its Online Storage team. You'll...

At Affi, 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 Streaming team at Affi is responsible for all things data and drives the strategy for event driven architecture, stream processing, data exploration, discovery and validation....

Become a key member of the ClickPipes team as a Senior Backend Engineer at ClickHouse Cloud, focusing on data ingestion services for high-performance systems. This role offers flexibility in a remote environment while driving technical decisions.At ClickHouse, we are seeking an experienced engineer with over 5 years of software development in distributed...

About the TeamThe ClickPipes team builds the services that power data ingestion into ClickHouse Cloud. As a primary entry point for customers' data, ClickPipes is critical to product adoption and the company's growth. We work at petabyte scale, solving challenges in distributed systems, fault tolerance, and high-throughput ingestion. You'll help make these...

Insi is building its delivery team for a federal government client (Department of National Defence) supporting Oracle-based engineering and airworthiness management products. The Full-Stack Developer will work on Oracle SQL/PLSQL, APEX UI, and agile delivery in a primarily in-person setting at Gatineau, QC.You will collaborate across UI and data layers,...

A tech development agency is seeking a .NET Developer to build backend systems and APIs while collaborating with frontend teams. The ideal candidate should have strong experience with .NET and C#, knowledge of RESTful APIs, and database management skills. This position offers remote work options and the opportunity to work on diverse projects across various...