senior software engineer backend jobs in Calgary

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6,735 senior software engineer backend job listings in Canada. Find daily updated positions from leading job boards.


  • Calgary, Alberta, Canada Affirm, Inc. Full-time

    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...


  • Calgary, Alberta, Canada Affirm, Inc. Full-time

    At Affi... 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. Affirms engineering team is building a large-scale, fault‑tolerant, and global infrastructure that is shared across multiple financial products, merchants, and vendors. Ensuring that our...


  • Calgary, Alberta, Canada Affirm, Inc. Full-time

    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. Trust & Safety Engineering protects affirm’s consumers, merchants, and network from fraud and abuse. We build the real-time systems, risk signals, and tools that stop bad actors...


  • Calgary, AB, Calgary Census Division, AB; Alberta, Canada Affirm, Inc. Full-time €153,000 - €213,000 Temporary

    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...


  • Calgary, AB, Calgary Census Division, AB; Alberta, Canada Affirm, Inc. Full-time €153,000 - €213,000 Temporary

    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. Trust & Safety Engineering protects affirm’s consumers, merchants, and network from fraud and abuse. We build the real-time systems, risk signals, and tools that stop bad...


  • Calgary, AB, Calgary Census Division, AB; Alberta, Canada Affirm, Inc. Full-time €153,000 - €213,000 Temporary

    At Affi... 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. Affirms engineering team is building a large-scale, fault‑tolerant, and global infrastructure that is shared across multiple financial products, merchants, and vendors. Ensuring that our...


  • Calgary, Alberta, Canada Affirm Remote Full-time $153,000 - $213,000 Contract

    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. About The Engineering Team The Engineering team builds systems that power Affirm’s mission. We take pride in our craft, building reliable, performant, and scalable solutions...


  • Calgary, Alberta, Canada Affirm Remote Full-time $153,000 - $213,000 Contract

    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. About The Team Machine Learning is central to how Affirm delivers on its mission, powering decisions across underwriting, fraud, servicing, and personalization. We are seeking a...


  • Calgary, Alberta, Canada Affirm Full-time

    At Affi... 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. Affirms engineering team is building a large-scale, fault‑tolerant, and global infrastructure that is shared across multiple financial products, merchants, and vendors. Ensuring that our...


  • Calgary, AB, Calgary Census Division, AB; Alberta, Canada Affirm Full-time €153,000 - €213,000 Temporary

    At Affi... 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. Affirms engineering team is building a large-scale, fault‑tolerant, and global infrastructure that is shared across multiple financial products, merchants, and vendors. Ensuring that our...


  • Calgary, AB, Calgary Census Division, AB; Alberta, Canada Transactix Financial Inc. Full-time

    Design and develop scalable backend systems for blockchain trading bots with MongoDB, Redis, and Web3 integration. At Transactix, we're on a mission to build Canada's next-generation payments infrastructure through CADX™ and the Open Value Network™. We believe in creating an interoperable and transparent financial rails for Canadians, merging fintech,...


  • Calgary, Alberta, Canada Affirm, Inc. Full-time

    At Affirmt, 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. Affirm's engineering team is building a large-scale, highly-available, and global infrastructure that is shared across multiple financial products. Ensuring that our...


  • Calgary, AB, Calgary Census Division, AB; Alberta, Canada Affirm, Inc. Full-time €209,000 - €269,000 Temporary

    At Affirmt, 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. Affirm's engineering team is building a large-scale, highly-available, and global infrastructure that is shared across multiple financial products. Ensuring that our...


  • Calgary, Alberta, Canada Affirm Full-time

    At Affirmt, 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. Affirm's engineering team is building a large-scale, highly-available, and global infrastructure that is shared across multiple financial products. Ensuring that our...


  • Calgary, AB, Calgary Census Division, AB; Alberta, Canada Affirm Full-time €209,000 - €269,000 Temporary

    At Affirmt, 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. Affirm's engineering team is building a large-scale, highly-available, and global infrastructure that is shared across multiple financial products. Ensuring that our...


  • Calgary, Alberta, Canada StackAdapt Full-time

    Overview StackAdapt is the leading technology company that empowers marketers to reach, engage, and convert audiences with precision. With 465 billion automated optimizations per second, the AI‑powered StackAdapt Marketing Platform seamlessly connects brand and performance marketing to drive measurable results across the entire customer journey. What...


  • Calgary, Alberta, Canada StackAdapt Full-time

    Advance your technical skills with StackAdapt as a Software Engineer focused on backend development. This position allows you to build and optimize scalable micro-services in a collaborative environment. StackAdapt invites applications for a Backend Software Engineer role requiring over two years of relevant experience. You will focus on creating...


  • Calgary, Alberta, Canada Affirm, Inc. Full-time

    At Affim, 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 Engineering team builds systems that power Affim's mission. We take pride in our craft, building reliable, performant, and scalable solutions that touch every part of the...


  • Calgary, AB, Calgary Census Division, AB; Alberta, Canada Affirm, Inc. Full-time €133,000 - €183,000 Temporary

    The Engineering team builds systems that power Affim's mission. We take pride in our craft, building reliable, performant, and scalable solutions that touch every part of the business. With the support of your team's tech lead and manager, you will break down larger projects into individual tasks, deliver them in multiple phases, and collaborate with others...


  • Calgary, Alberta, Canada Transactix Financial Inc. Full-time

    Design and develop scalable backend systems for blockchain trading bots with MongoDB, Redis, and Web3 integration. 01 About Us At Transactix, we're on a mission to build Canada's next-generation payments infrastructure through CADX™ and the Open Value Network™. We believe in creating an interoperable and transparent financial rails for Canadians, merging...