react engineer jobs in Montreal

Leadership Connect Canada is seeking a Full Stack Engineer or Senior Full Stack Engineer to join our CMS Team to design and build customer-facing applications across our services and web experience.You will work with Kotlin/Java and Spring on the server side and React, Vite, and TypeScript on the frontend, helping deliver high-quality product experiences...

Affirm is a remote-first company hiring a software engineer in Canada. This role focuses on shipping web apps with React, designing scalable APIs in Python or Kotlin, and delivering well-structured, testable code.You'll collaborate across product, design and analytics, own your growth, and participate in interviewing during team growth. The team values...

Proof is seeking a Senior Full-Stack Developer to help scale our Go-based backend and React/TypeScript frontend. You'll design, build, and maintain robust APIs, interfaces, and services across the stack in a collaborative, remote-friendly environment.You\'ll partner with Product and Design, review code, mentor teammates, and explore new technologies to drive...

Proof is seeking a Senior Full-Stack Developer to join our engineering team as we scale. You will design, develop, and maintain frontend and backend components, using Go for APIs and React/TypeScript for the UI, in a remote Canada-based role.The role offers full-time salary CAD 155,000–175,000, comprehensive benefits, and equipment. Candidates must reside...

Affirm is seeking a Software Engineer II for Marketing & Privacy Engineering (MPE) to build high-traffic web experiences using React and TypeScript, collaborating with Product, Design, Analytics, and Data Engineering to ship reliable features with privacy and measurement in mind.You will break down work, support product lifecycle, monitor metrics, and...

Elevate your front-end engineering career as a Junior Front-End Engineer, leveraging React to build real-time trading systems. Join our team for impactful projects and cutting-edge technology. We are seeking an enthusiastic Junior Front-End Engineer with over a year of experience in React, TypeScript, or Next.js. You will design and develop interactive...

A leading global financial services firm in Montreal seeks an accomplished Full Stack Developer to join the Resilience Technology team. The ideal candidate will have over 7 years of experience, specializing in Python and Generative AI technologies. Responsibilities include designing scalable solutions and collaborating with global teams. This role offers a...

affirm in Canada seeks a Software Engineer I for the Upfunnel team to build reliable frontend experiences across affirm.js, messaging, experimentation, and developer tooling. You will contribute to high-traffic UI with React or Vue and collaborate with cross-functional partners to ship impact.This remote-first role is open to candidates in several Canadian...

Jane App is seeking a Senior Developer to help move Online Booking and My Account to React, while keeping the live experience uninterrupted for clinics and patients. You will work across the stack in React, TypeScript, and Rails, connecting frontend features with APIs and services behind them.You will champion accessibility, contribute to design discussions,...

Remote (preferably in Toronto) Full-timeABOUT USCaddie Intelligence builds software for analytical testing laboratories and other regulated industries.WHAT WE'RE BUILDINGSomething meaningful, in an industry that quietly touches billions of lives and almost nobody thinks about. The work inside it is slow, manual and consequential and the decisions being made...

Tether invites a Product Engineering Lead to shape Keet, a fully peer-to-peer messaging app built on Holepunch's stack, with end-to-end encryption and no central servers.You will run the API and frontend teams, set a high engineering bar, own feature designs, and partner with product managers to translate roadmaps into shipped work. Expect hands-on...

Aduna is building the backbone of the global API economy. The Testing Team designs and evolves internal quality engineering platforms that ensure correctness, performance, and resilience across the API ecosystem and CSP integrations.This role requires 5+ years of full‑stack development with TypeScript/React and Java/Spring Boot, plus hands‑on experience...

Leadership Connect Canada is seeking a Full Stack Engineer or Senior Full Stack Engineer to join our CMS Team to design and build customer-facing applications across our services and web experience. You will work with Kotlin/Java and Spring on the server side and React, Vite, and TypeScript on the frontend, helping deliver high-quality product experiences...

We Are At Accenture Technology, you'll help lead enterprise transformation programs, guide engineering teams, and deliver innovative cloud-native solutions for some of Canada's leading organizations. You Are A Full Stack Engineering Manager who brings strong front-end and back-end development experience, cloud-first delivery expertise, and the leadership...

Cloud Imperium Games Montréal recherche un Développeur.euse Full-Stack Senior pour renforcer son équipe technique et contribuer à la plateforme Star Citizen. Vous travaillerez sur le front-end avec React/TypeScript et sur le back-end avec PHP et Node.js, en privilégiant une architecture microservices et des déploiements robustes.Vous serez amené à...

Aduna is building the backbone of the global API economy. The Testing Team designs and evolves internal quality engineering platforms that ensure correctness, performance, and resilience across the API ecosystem and CSP integrations.This role requires 5+ years of full‑stack development with TypeScript/React and Java/Spring Boot, plus hands‑on experience...

Senior Mobile Developer (React Native) MEDFAR is seeking an experienced Senior Mobile Developer to design, build, and maintain high-quality cross-platform mobile applications that deliver exceptional user experiences across iOS, Android, and web using React Native. What You'll Blood Architect for Scale: Design and evolve robust, maintainable, and secure...

Affirm is seeking a Software Engineer II for Marketing & Privacy Engineering (MPE) to build high-traffic web experiences using React and TypeScript, collaborating with Product, Design, Analytics, and Data Engineering to ship reliable features with privacy and measurement in mind.You will break down work, support product lifecycle, monitor metrics, and...

This position is listed on behalf of a partner company, which manages all applications and next steps. Our partner is looking for a Senior Full Stack Developer (React + Node.js) based in Canada.Are you a seasoned full stack developer passionate about building scalable applications and solving complex engineering challenges? This opportunity allows you to...

Astek in Montreal seeks a senior software engineer to design and deliver scalable Python and React solutions in an agile team. You will leverage Generative AI tools to accelerate development and collaborate with global teams to translate business requirements into robust technical solutions.You will participate in SCRUM ceremonies, report on project status,...