Backend Javascript Engineer Jobs in London, Canada

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Remote JavaScript Engineer AI Trainer

As an hourly paid, fully remote JavaScript Engineer for AI Data Training, you will review complex AI-generated code and explanations or generate new ones, evaluate the reasoning quality and step-by-step problem-solving, and provide expert feedback that helps models produce answers that are accurate, logical, and ...

Remote JavaScript Engineer AI Trainer

As an hourly paid, fully remote JavaScript Engineer for AI Data Training, you will review complex AI-generated code and explanations or generate new ones, evaluate the reasoning quality and step-by-step problem-solving, and provide expert feedback that helps models produce answers that are accurate, logical, and ...

Senior Fullstack Engineer Growth Platforms (Remote)

A financial technology company in Canada is seeking an experienced Software Engineer to lead mobile initiatives and collaborate with cross-functional teams. The role offers the opportunity to shape consumer experiences through technical expertise in React Native, JavaScript, and backend systems. With 4+ years of ...

Senior Fullstack Engineer Growth Platforms (Remote)

A financial technology company in Canada is seeking an experienced Software Engineer to lead mobile initiatives and collaborate with cross-functional teams. The role offers the opportunity to shape consumer experiences through technical expertise in React Native, JavaScript, and backend systems. With 4+ years of ...

Senior Fullstack Engineer Growth Platforms (Remote)

A financial technology company in Canada is seeking an experienced Software Engineer to lead mobile initiatives and collaborate with cross-functional teams. The role offers the opportunity to shape consumer experiences through technical expertise in React Native, JavaScript, and backend systems. With 4+ years of ...

Remote Backend Engineer Consumer Authentication

A leading credit technology firm based in Ontario is seeking a Software Engineer with 1.5+ years of backend development experience, particularly in Python or Kotlin. The role involves breaking down projects, collaborating across teams, and ensuring operational availability. The company provides a competitive sal ...

Remote Backend Engineer Consumer Authentication

A leading credit technology firm based in Ontario is seeking a Software Engineer with 1.5+ years of backend development experience, particularly in Python or Kotlin. The role involves breaking down projects, collaborating across teams, and ensuring operational availability. The company provides a competitive sal ...

Remote Backend Engineer Consumer Authentication

A leading credit technology firm based in Ontario is seeking a Software Engineer with 1.5+ years of backend development experience, particularly in Python or Kotlin. The role involves breaking down projects, collaborating across teams, and ensuring operational availability. The company provides a competitive sal ...

Remote Backend Engineer Consumer Authentication

A leading credit technology firm based in Ontario is seeking a Software Engineer with 1.5+ years of backend development experience, particularly in Python or Kotlin. The role involves breaking down projects, collaborating across teams, and ensuring operational availability. The company provides a competitive sal ...

Senior Software Engineer, Backend (Merchant Advocacy)

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. The Merchant & Partner Lifecycle (M&PL) team is at the forefront of Affirm’s architectural transformation. We are addressing cr ...

Software Engineer II, Backend (Consumer Authentication)

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. The Consumer Authentication Engineering team is responsible for building and operating secure, seamless account creation and a ...

Software Engineer II, Backend (Consumer Authentication)

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. The Consumer Authentication Engineering team is responsible for building and operating secure, seamless account creation and a ...

Software Engineer II, Backend (Affirm Card)

Overview Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. The Affirm Card Engineering team is looking for a passionate Software Engineer II to help build the tools and syste ...

Staff Backend Engineer, Growth Platform (Remote)

A leading fintech company in London, Ontario, is seeking an experienced backend engineer to set technical strategy and collaborate with various teams. This role requires extensive experience in designing backend systems using Python or Kotlin, as well as a strong background in distributed systems and technologie ...

Senior Backend Engineer PMI Integrations (Remote)

A financial technology company is hiring a software engineer to work on backend systems and contribute to API development. The position requires over 5 years of software engineering experience and proficiency in Python or Kotlin. Responsibilities include breaking down projects, collaborating with teams, and supp ...

Senior Software Engineer, Backend (PMI Integrations)

Overview Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. The Partner Merchant Interface (PMI) team builds the APIs and solutions that power Affirm’s integrations with ...

Senior Software Engineer, Backend (Merchant Interfaces)

Overview Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. The Partner Merchant Interface (PMI) team builds the APIs and solutions that powers Affirm’s integrations with Enter ...

Software Engineer II, Backend (Affirm Card)

Overview Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. The Affirm Card Engineering team is looking for a passionate Software Engineer II to help build the tools and syste ...

Staff Backend Engineer, Growth Platform (Remote)

A leading fintech company in London, Ontario, is seeking an experienced backend engineer to set technical strategy and collaborate with various teams. This role requires extensive experience in designing backend systems using Python or Kotlin, as well as a strong background in distributed systems and technologie ...

Staff Software Engineer, Backend (Growth Platform)

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. The Growth Platform team builds shared backend platforms that power incentives, experimentation, personalization, and data-driv ...

Senior Software Engineer, Backend (Growth Platform)

Senior Software Engineer, Backend (Growth Platform) Join to apply for the Senior Software Engineer, Backend (Growth Platform) role at Affirm . Overview Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and p ...

Software Engineer II, Backend (Identity Decisioning)

Software Engineer II, Backend (Identity Decisioning) Join to apply for the Software Engineer II, Backend (Identity Decisioning) role at Affirm . Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later witho ...

Senior Software Engineer, Backend (Merchant Advocacy)

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. The Merchant & Partner Lifecycle (M&PL) team is at the forefront of Affirm’s architectural transformation. We are addressing cr ...

Software Engineer II, Backend (Consumer Authentication)

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. The Consumer Authentication Engineering team is responsible for building and operating secure, seamless account creation and a ...

Software Engineer II, Backend (Consumer Authentication)

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. The Consumer Authentication Engineering team is responsible for building and operating secure, seamless account creation a ...

Senior Backend Engineer PMI Integrations (Remote)

A financial technology company is hiring a software engineer to work on backend systems and contribute to API development. The position requires over 5 years of software engineering experience and proficiency in Python or Kotlin. Responsibilities include breaking down projects, collaborating with teams, and supp ...

Software Engineer II, Backend (Affirm Card)

Overview Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. The Affirm Card Engineering team is looking for a passionate Software Engineer II to help build the tools and s ...

Software Engineer II, Backend (Identity Decisioning)

Software Engineer II, Backend (Identity Decisioning) Join to apply for the Software Engineer II, Backend (Identity Decisioning) role at Affirm . Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay lat ...

Staff Backend Engineer, Growth Platform (Remote)

A leading fintech company in London, Ontario, is seeking an experienced backend engineer to set technical strategy and collaborate with various teams. This role requires extensive experience in designing backend systems using Python or Kotlin, as well as a strong background in distributed systems and technologie ...

Staff Software Engineer, Backend (Growth Platform)

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. The Growth Platform team builds shared backend platforms that power incentives, experimentation, personalization, and data-driv ...

Backend/Full‑Stack Engineer – Remote, Impact‑Driven

A leading fintech company is seeking an experienced Full Stack Developer to work on innovative projects that enhance user experience. The ideal candidate will have over 2 years of experience in full-stack development and proficiency in React Native and Python. This role offers a competitive compensation package, ...

Backend Engineer II — Identity & Auth Systems (Remote)

A financial technology company is looking for a Software Engineer II to join its remote team in Canada. The ideal candidate will have over 1.5 years of backend development experience, proficiency in Python or Kotlin, and familiarity with distributed systems such as AWS and MySQL. You'll engage in the product dev ...

Backend/Full‑Stack Engineer – Remote, Impact‑Driven

A leading fintech company is seeking an experienced Full Stack Developer to work on innovative projects that enhance user experience. The ideal candidate will have over 2 years of experience in full-stack development and proficiency in React Native and Python. This role offers a competitive compensation package, ...

Senior Backend Engineer Growth Platform (Remote Canada)

A financial technology company is looking for a Senior Software Engineer to join their remote team. You will lead backend development for the Growth Platform, ensuring project delivery and supporting team growth. Ideal candidates have experience with distributed systems and proficiency in Python or Kotlin. This ...

Backend Engineer II — Identity & Auth Systems (Remote)

A financial technology company is looking for a Software Engineer II to join its remote team in Canada. The ideal candidate will have over 1.5 years of backend development experience, proficiency in Python or Kotlin, and familiarity with distributed systems such as AWS and MySQL. You'll engage in the product dev ...

Backend Engineer II — Remote, Money Movement Platform

A financial technology company is seeking a Software Engineer II to enhance tools for managing money movement and bank data. The ideal candidate will have over 1.5 years of software engineering experience, proficient in Python and familiar with distributed systems. Responsibilities include supporting the product ...

Remote Backend Engineer for Merchant Interfaces APIs

A financial technology company is hiring a Senior Software Engineer in London, Ontario. The role involves designing and managing APIs, collaborating with teammates during product development, and contributing to operational metrics. Candidates should have over 5 years of experience, proficiency in Python or Kotl ...

Remote Backend Engineer for Merchant Interfaces APIs

A financial technology company is hiring a Senior Software Engineer in London, Ontario. The role involves designing and managing APIs, collaborating with teammates during product development, and contributing to operational metrics. Candidates should have over 5 years of experience, proficiency in Python or Kotl ...

Backend/Full‑Stack Engineer – Remote, Impact‑Driven

A leading fintech company is seeking an experienced Full Stack Developer to work on innovative projects that enhance user experience. The ideal candidate will have over 2 years of experience in full-stack development and proficiency in React Native and Python. This role offers a competitive compensation package, ...

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