backend engineer ruby jobs in Calgary

At Capgemini Engineering, the world leader in engineering services, we bring together a global team of engineers, scientists, and architects to help the world’s most innovative companies unleash their potential. From autonomous cars to life-saving robots, our digital and software technology experts think outside the box as they provide unique R&D and...

Affirm is seeking a Backend Software Engineer to design and build the next generation of our Checkout Platform, delivering a world-class buying experience with a focus on reliability and performance.You will design and implement new APIs and microservice interfaces, own checkout components, and collaborate with teams across the company to improve the overall...

Title: Backend Lead Mode: ContractLocation: Calgary, AB Key Responsibilities: Role Purpose: Lead backend service development and define standards for secure, scalable application services. Experience: 10 15+ years in backend development with 3+ years leading backend or platform teams. Core Responsibilities: Define backend architecture, API standards, and...

One of the world's leading providers of products and services to the global energy industry. With a presence in more than 70 countries and 130 nationalities represented in our workforce, we are one of the world's most diverse companies. This allows us to offer multiple career paths, best-in-class training, and world-class benefits. Our product provides E&P...

Affirm is seeking a Backend Software Engineer to design and build the next generation of the Checkout Platform, delivering a world-class buying experience with a fast-paced, scalable API and microservice stack.You will own checkout components, improve system health, and collaborate across teams to raise performance and reliability, enabling seamless...

Affirm is seeking a Backend Software Engineer to design and build the next generation of our Checkout Platform, delivering a world-class buying experience with a focus on honesty and trust.You will design and implement new APIs and microservice interfaces to manage every user’s transaction, while collaborating with teams to improve performance and...

Affirm is seeking a Backend Software Engineer to help design and build the next generation of our Checkout Platform. You will work on APIs and microservices to manage user transactions, focusing on performance and reliability, in a remote-friendly Canadian environment.The role emphasizes ownership, collaboration with teams, and a customer-centric approach as...

Join Pragmatike as a Full-Stack Engineer, specializing in backend technologies from anywhere in Canada. Bring your expertise in Python and Node.js to deliver robust data-intensive platforms. This role focuses on backend systems, with approximately 70% of your time dedicated to back-end tasks such as API development and data flow management. You'll work...

Affirm is seeking a software engineer for the Streaming team in Ottawa. You will design and scale data infrastructure, build backend services, and collaborate across product, design and analytics to ship features that rely on Kafka, Flink and AWS.You will participate in ideation, articulate constraints, and help manage trade-offs with stakeholders while...

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,...

Databases: PostgreSQL, MongoDBLocation:Canada (Remote-friendly)Start date:ASAPLanguages:English (required), French (strong plus)About The RolePragmatike is hiring on behalf of a fast-growing, product-driven technology company building data-intensive platforms used at scale across multiple markets. The product focuses on automation, data extraction, and...

The Streaming team at Affirm is responsible for all things data and drives the strategy for event driven architecture, stream processing, data exploration, discovery and validationWe leverage existing open source technologies like Kafka, Flink, Schema registry and also build our own as neededAs a member of our team you would spend time identifying and...

We are seeking a strong Backend Engineer to design, build, and maintain enterprise-grade APIs, middleware services, and data-driven backend systems. This role will focus on developing scalable API products, enabling API consumers, enforcing API governance standards, and supporting secure API onboarding and consumption patterns.The ideal candidate has strong...

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...

Pragmatike is seeking a Full-Stack Engineer (backend-leaning) to own features end-to-end from a primarily backend focus with ~70% backend and 30% frontend work. The role is remote-friendly within Canada and targets engineers who enjoy deep backend work close to product delivery.The candidate will design, build, and maintain backend services, APIs, and data...

GitLab is seeking a Senior Backend Engineer for the Security Factory: Code Security team to advance code-level security across the DevSecOps platform. You will work on dependency analysis, SBOMs, and automated remediation, integrating AI-assisted tooling into secure software development.Youll collaborate across teams, mentor engineers, and contribute to...

Alignerr is seeking a Back End Developer in a fully remote contract role to design, build, and optimize server-side systems and APIs powering AI products. You’ll craft data pipelines, model-serving infrastructure, and scalable microservices handling real-world traffic.This role is remote, flexible, and offers autonomy on your schedule. As part of a...

Elevate your career as a Senior Backend Software Engineer with Affirm, focusing on online storage solutions in a remote-first environment. Be part of a team that builds and scales large-scale database systems. Affirm is seeking a talented senior software engineer to enhance its Data and Storage Services team. This role involves working with relational and...

Transform the future of data with your skills as a Senior Backend Developer at IBM's Confluent Cloud. Lead innovative projects in an influential role focused on seamless data access and mobility. IBM Software is looking for a Senior Software Engineer II to enhance its core backend systems for Confluent Cloud. In this position, you will develop a robust...

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...