Senior Backend Software Engineer at Marqeta | Toronto & Vancouver

Marqeta is seeking skilled Senior Backend Software Engineers to become part of our dynamic Engineering team. In this role, you will develop high-performance software that supports Marqeta's backend services. Your responsibilities will include creating and reviewing engineering design documentation, enhancing our systems, infrastructure, and processes, developing new features, conducting code reviews, and collaborating with a diverse group of stakeholders across the organization. As a Backend Engineer, you will deliver meaningful products that contribute to Marqeta's position as a leader in modern card issuing. You'll have the opportunity to innovate on system architecture, produce impactful software, and mentor junior engineers. Participation in a rotational on-call pager duty is a required aspect of this role, with specifics varying by team. This will be discussed further during the interview process. We embrace a Flexible First approach, allowing this role to be performed remotely from anywhere within Ontario or British Columbia, Canada. We would love for you to join our team! This posting is for multiple Senior Software Engineering positions across Marqeta.

Join Marqeta as a Senior Dispute Analyst, where you will play a pivotal role in refining complex operational processes, identifying inefficiencies, and enhancing quality outcomes for regulatory compliance. You will collaborate with a dynamic team of innovative, agile professionals who leverage their strengths to drive speed, efficiency, and scalability across the organization. This role involves working closely with internal teams and external partners (BPO) to manage operational process flows, ensure compliance with regulations, analyze quality assurance results, and update procedures as necessary. Additionally, you will be responsible for facilitating communication with Marqeta’s programs and supporting essential reporting requirements. We embrace a Flexible First approach. This position can be performed remotely from anywhere within Ontario or British Columbia, Canada. We can't wait for you to join our team!

As an Enterprise Risk Management (“ERM”) Associate at Marqeta, you will play a pivotal role as a key member of our risk management team. Your contributions will help shape the methodology Marqeta employs to identify, assess, and monitor risks throughout the organization. You will collaborate in the design and implementation of a contemporary ERM framework that seamlessly integrates risk management principles, advanced analytics, and financial quantification, all aimed at safeguarding the company while facilitating risk-balanced growth. This position requires a proactive individual who can transform emerging and existing risks into actionable insights for cross-functional leaders.We embrace a Flexible First approach, allowing this role to be performed remotely anywhere within Ontario or British Columbia, Canada. We are excited to welcome you to our team!This is an opportunity to fill an existing vacancy.

About BreeBree is transforming the consumer finance landscape by providing innovative, efficient, and cost-effective financial services to over half the Canadian population living paycheck to paycheck. Operating within a vast yet underrepresented market, we aim to be the most affordable and reliable provider of short-term credit for the 20 million Canadians facing financial challenges.With over 600,000 Canadians already benefiting from Bree's services, we are just beginning our journey. Our company is experiencing rapid growth, achieving product-market fit, and is positioned to become a leading FinTech player in Canada. With annualized revenues in the eight-figure range, we are on a double-digit growth trajectory, maintaining profitability and an impressive employee retention rate. As a proud participant of Y Combinator in 2021, we successfully secured a $2 million seed funding shortly thereafter.About the RoleWe are seeking a talented Backend Software Engineer to lead the architectural development of our serverless infrastructure, utilizing the latest AI development tools. The ideal candidate will possess extensive backend experience, a dedication to creating clean and maintainable systems, and an innovative mindset towards AI-assisted development.What You'll DoArchitect and advance our serverless backend systems with an emphasis on scalability, maintainability, and enhancing the developer experience.Refactor and modernize our existing Lambda-based microservices architecture to implement patterns that optimize AI tool effectiveness.Create and maintain robust data pipelines and payment processing systems across various providers.Promote best practices in AI-native development, establishing patterns and abstractions that foster rapid iteration with tools such as Cursor and Claude Code.Collaborate with infrastructure engineers to refine our AWS-based architecture using Infrastructure as Code.Drive the consolidation and standardization of our data layer across Supabase, Firebase, and legacy systems.What You'll NeedExpert-level proficiency in TypeScript, Node.js, and AWS services.Demonstrated experience with serverless architectures and microservices.Strong understanding of database systems and data modeling.Familiarity with AI development tools and methodologies.Excellent problem-solving skills and a proactive approach to development challenges.

As the Senior Manager, Software Engineering for our Risk, Fraud and Disputes team at Marqeta, you will spearhead the design, development, and execution of issuer-side disputes across various card networks and payment platforms. Your role will be pivotal in constructing and managing robust systems that handle cardholder disputes, oversee chargeback lifecycles, adhere to network regulations, and streamline evidence workflows. This is a hands-on leadership position suited for an individual with extensive experience in disputes and chargebacks, who possesses an AI-first approach, takes full accountability for results, and is adept at collaborating with enterprise clients and networks to navigate complex dispute situations. We embrace a Flexible First work model. This role can be performed remotely from anywhere in Canada or from our office in Oakland. Join us in transforming the future of payments dispute resolution.

Join Opendoor as a Software Engineer specializing in Backend Pricing, where you will play a pivotal role in shaping the future of real estate technology.As part of our dynamic team, you will develop innovative back-end solutions that enhance pricing algorithms, ensuring optimal performance and delivering a seamless user experience.

Join Justworks as a Senior Backend Software Engineer and play a pivotal role in shaping our technology landscape. You will work on high-impact projects, designing and implementing scalable backend systems that support our mission of simplifying business operations for our clients. Your expertise in backend technologies will be critical in delivering exceptional digital experiences.

NimbleRx is a pioneering healthtech company dedicated to transforming the way individuals access, understand, and manage their healthcare. Our journey begins with the ambition to create the world's most beloved pharmacy business. As a rapidly expanding, tech-centric startup, we are committed to enhancing the experiences of both patients and pharmacists. At Nimble, we cultivate a collaborative culture that encourages open communication and purposeful action, empowering us to tackle today's most exciting challenges and achieve rapid growth.* Please note: Sponsorship options are limited as Nimble does not have an entity established in Canada.As a Senior Backend Engineer, you will play a crucial role in designing the technology and customer experiences that are essential to our various web products serving patients, pharmacies, and other clients of NimbleRx (www.nimblerx.com). You will collaborate with a team of exceptional and driven software engineers who prioritize performance, reliability, and scalability in their work. Your contributions will involve close cooperation with other developers, product management, and design teams to define feature requirements and technical use cases, ensuring timely delivery of high-quality code.Our engineering culture: We embrace a philosophy of shared trust and humility, fostering a sense of unity as we collaboratively navigate the challenges of a fast-growing business. Our daily operations reflect our core values of empathy, simplicity, autonomy, leadership, ownership, curiosity, a bias for action, and mentorship, all within a highly cooperative environment.

About FeatheryFeathery revolutionizes data intake workflows for insurance and wealth management firms. Industry leaders depend on Feathery to streamline crucial operations such as underwriting, client onboarding, and automated account openings.With significant revenue growth and increasing demand from enterprises, we are expanding our engineering team to handle progressively intricate, data-driven workflows across our platform.Why We’re HiringAs Feathery continues to grow, so does the complexity and scale of the systems that support our product—ranging from document processing pipelines to real-time workflow execution.We are seeking a Senior Backend Engineer to assist in constructing and scaling the foundational infrastructure behind our document intelligence and workflow platform. This role is perfect for someone who enjoys designing reliable, high-performance systems and taking charge of backend architecture in a rapidly growing B2B SaaS environment.You will collaborate closely with product, engineering, and customer-facing teams to deliver systems that are swift, resilient, and finely tuned to customer requirements.About the RoleThis is a high-ownership role that encompasses:Backend system design and distributed architectureInfrastructure, scalability, and performance optimizationProduct-focused engineering and problem-solvingCross-functional collaboration across product and customer teamsYou will play a pivotal role in shaping the systems that drive Feathery’s platform—ensuring they are reliable, scalable, and capable of managing complex, real-world applications.What You’ll DoBackend Systems & InfrastructureDesign, build, and scale backend services that facilitate document processing and workflow automationDevelop asynchronous pipelines and distributed systems for managing large data volumesConstruct and maintain infrastructure utilizing AWS services and queuing systems (e.g., SQS)Guarantee high availability, fault tolerance, and observability across systemsOptimize systems for performance, scalability, and cost-efficiencyData Processing & Platform CapabilitiesEstablish systems for processing and transforming both structured and unstructured dataIntegrate data sources and ensure seamless data flow

Role Overview Venn is hiring a Senior Backend Engineer in Toronto. This role focuses on designing and improving backend architecture to support reliable, scalable applications. The position involves close collaboration with colleagues from various teams to deliver solid software that supports business goals.

Join Centari as a Senior Backend Software Engineer!At Centari, we revolutionize high-stakes dealmaking by unlocking the power of private deal data. Our innovative deal intelligence platform is paving the way for a new era in law and finance, transcending mere automation to embrace data-driven decision-making. Our proprietary Deal Reasoning Engine converts complex documents into actionable insights, equipping global deal teams with the knowledge needed to negotiate effectively.We foster a diverse team of attorneys, financial experts, and engineers within a hybrid, cross-cultural environment. Our mission is supported by esteemed enterprise AI investors, including GTMfund and industry veterans such as Jeremy Kranz and Andy Appelbaum.We thrive on complexity as it breeds innovation. If you're a proactive builder who excels in ambiguous situations and embraces radical ownership, we want to connect with you!For more details, visit centari.com or follow us on LinkedIn.

Join Marqeta as a Principal Software Engineer on our Core Issuing & Processing team, where you will lead high-impact projects that enhance our customer offerings from concept to execution. In this pivotal role, you will spearhead technical initiatives aimed at optimizing our issuing and processing engines, shaping the technical roadmap for our core platform, and collaborating with engineering leaders to promote operational excellence across the organization.Embracing a Flexible First work culture, this position can be performed remotely from anywhere within Ontario or British Columbia, Canada. We invite you to be part of our dynamic team.The Core Issuing and Processing team is responsible for the essential systems that drive Marqeta's core business, developing solutions across six critical domains: Onboarding, Issuing, Digital Wallets, Authorization & Clearing, Transaction Controls, and Ledger. Together, these systems form the backbone of Marqeta's card issuing and payment processing platform.

About Pinterest:At Pinterest, we inspire millions globally to explore creative ideas, envision new possibilities, and plan for unforgettable moments. Our mission is to empower everyone to create a life they love, starting with the dedicated team behind our innovative platform.Join a career that fuels innovation for countless users, turns passion into growth opportunities, and celebrates diverse experiences while embracing the flexibility to perform at your best. Creating a fulfilling career is not just a dream; it's possible with us.We seek inquisitive, versatile Senior Full-Stack and Backend Engineers to join our Monetization and Core engineering teams. Collaborate closely with product managers, designers, and fellow engineers to enable cutting-edge technologies and experiences. You will build robust frameworks and features, empowering both developers and Pinners. Embrace the chance to devise creative solutions to challenging problems. We welcome courageous thinkers ready to initiate and lead new projects, overseeing them from concept through technical design, implementation, and release.Multiple positions are open across various teams, including roles in both Product and Platform divisions of Pinterest.What You'll Do:Develop the backend infrastructure for Pinner-facing features, shaping the future of inspiration on Pinterest.Lead and contribute to all stages of the product development lifecycle, from ideation and rapid prototyping to implementation and release, including running A/B tests and architecting scalable solutions for millions of users.Collaborate with design, product, and backend teams to create end-to-end functionality.Adopt the perspective of a Pinner to propose innovative product ideas and features.Utilize automated testing to ensure high technical quality in the features you develop, taking ownership of the components.Advance your engineering skills by collaborating with world-class peers on impactful projects.Design, develop, and manage large-scale, distributed systems and networks.Engage with Engineering stakeholders to understand new requirements and provide scalable solutions.

Join Movable Ink, where we empower marketers with cutting-edge data-activated content generation and AI-driven decision making. Trusted by some of the world's most innovative brands, we help maximize revenue, streamline workflows, and enhance marketing agility. With headquarters in New York City and a diverse team of nearly 600 professionals, our reach extends across North America, Central America, Europe, Australia, and Japan.We are on the lookout for a skilled Senior Backend Engineer specializing in Distributed Systems to join our Activation Team. This dynamic group is dedicated to transforming extensive data sets into actionable insights. In this role, you will design and implement robust distributed software systems capable of processing data at high speeds and scale. The position offers the chance to innovate and create substantial impact by developing sophisticated multi-tiered systems that deliver exceptional value to our esteemed clients. You will be responsible for crafting and deploying high-quality, scalable AI solutions while producing technically impressive products.

Marqeta is on the lookout for a Senior Product Manager specializing in SDKs, Developer Platform & Documentation to drive the strategic direction and growth of our developer platform, essential for empowering customers to build innovative financial solutions on Marqeta. In this role, you will take ownership of the entire developer experience across Mobile and Web SDKs, APIs, and documentation, ensuring developers can seamlessly discover, integrate, test, and scale financial functionalities. Your responsibilities will encompass iOS, Android, and Web SDKs; API platforms; developer tools; authentication and identity management; developer portals; onboarding processes; sandbox environments; and documentation systems. You will work collaboratively with Engineering, Developer Relations, Documentation, Security, Design, and Solutions Engineering teams, as well as engage directly with customers to deliver a platform that is clear, dependable, and scalable. This position demands a high level of technical expertise and product insight to enhance developer experience, minimize integration time, and elevate platform adoption. The developer platform is the backbone of Marqeta's scalability. The quality of our SDKs, APIs, and documentation directly influences how swiftly customers can develop and launch their products. A robust developer experience not only reduces integration time but also boosts adoption and drives growth. This role is pivotal in eliminating obstacles, accelerating time-to-market, and establishing Marqeta as the preferred platform for developers. We embrace a Flexible First approach. This position offers the flexibility to work remotely from anywhere within Ontario, Canada. We are excited to welcome you to our team! This position is for an existing vacancy.

Empower Every Identity, from AI to HumanIdentity is critical in harnessing the potential of AI. At Okta, we secure AI by developing a trusted, neutral infrastructure that allows organizations to confidently navigate this transformative era. This mission demands a relentless commitment to tackle complex, real-world challenges. We seek individuals who build and own their projects, operating with urgency while delivering excellence.This role offers a chance to engage in career-defining work. If you share our passion for this mission, let's connect.The TeamHave you ever pondered how large enterprises ensure that the right individuals access their most crucial systems? That's the core challenge we address.The Okta Privileged Access Management (PAM) team employs an identity-centric methodology to tackle a vital privileged access use case. Our sophisticated Zero Trust architecture is tailored for the modern cloud, aiding customers in resolving significant security and operational challenges on a large scale.Our team constructs the infrastructure that governs access to sensitive servers, databases, and cloud resources, ensuring access is granted only when necessary. We serve as the security layer bridging users (and non-human interfaces) with the systems essential for their tasks. The RoleWe are in search of a Staff Backend Software Engineer passionate about solving complex problems: distributed systems and creating software where precision is paramount. You will deploy code that safeguards real infrastructure for authentic organizations. Your work will underpin multiple feature teams. Enhancements you make in speed, reliability, or usability will have a ripple effect throughout the product.This position is for someone who enjoys contemplating how systems interconnect. You should possess strong viewpoints on effective abstractions and the adaptability to refine these abstractions as the product evolves. What You’ll Be Doing Actively contribute to the evolution of PAM's core architectureCollaborate with product development teams to create scalable, composable components of our platformDesign and implement scalable architecture patternsDevelop APIs utilizing OpenAPI Specification that our customers depend on for production infrastructure accessEngage with backend systems developed in GoParticipate in rotational on-call responsibilities alongside SRE and product teams

At Relay, we are on a mission to empower self-made business owners through our innovative digital banking platform. Our goal is to provide these entrepreneurs with the financial clarity, confidence, and control needed to transform their hard work into enduring success. By eliminating the uncertainties of finance, we help turn cash flow from a source of stress into a powerful tool for building robust and resilient businesses.Our Engineering team plays a pivotal role in creating banking products that drive the success of millions of small businesses. As we embark on a transformative journey in the banking sector, we are seeking a passionate and impact-oriented Senior Software Engineer to join our expanding team. We value individuals who embrace smart risks, boldly experiment, and learn from challenges.In this role, you will confront complex challenges, deliver high-quality and robust code, and help shape the systems that underpin our products. This is a unique opportunity to engage with our entire product suite, influence technical decisions, and implement features that our customers adore. If you are eager to create top-tier fintech products within a fast-paced, collaborative environment, this position is perfect for you.Key ResponsibilitiesFull-Cycle Development: Take ownership of features throughout the entire development lifecycle—from design and development to testing, deployment, and monitoring—ensuring reliability and performance at scale.Infrastructure Management: Oversee our production systems, enhance infrastructure, and contribute to the availability, scalability, and resilience of our platform.Collaborative Partnership: Work closely with Product, Design, and cross-functional teams to develop solutions that align with customer and business needs.Innovative Mindset: Proactively seek out opportunities for technical, process, and product enhancements, driving the team to elevate standards and influence long-term technical strategies.Your QualificationsA minimum of 3 years of experience in full-stack software engineering.Demonstrated leadership in developing significant components or features, successfully delivering them with minimal oversight.Experience mentoring junior engineers, sharing knowledge, and fostering the growth and skill development of the entire team.

About Okta Okta secures identity for both humans and AI. The company builds trusted, neutral infrastructure so organizations can confidently navigate the challenges of modern technology. Okta’s mission focuses on enabling secure, reliable access for all. Privileged Access Management (PAM) Team The PAM team at Okta addresses privileged access challenges with an identity-first approach. Using a Zero Trust architecture built for today’s cloud environments, the team helps clients control access to critical servers, databases, and cloud resources. Their work ensures only the right people and systems reach sensitive assets, at the right time. Role Overview: Staff Backend Engineer This Staff Backend Engineer role focuses on distributed systems and core software infrastructure. The position involves deploying code that protects real-world infrastructure for Okta’s customers. Work in this role supports multiple feature teams and has a broad impact on the speed, reliability, and usability of the product. The ideal candidate understands how systems fit together, values strong abstraction, and adapts those abstractions as products evolve. What You Will Do Advance the core architecture of Okta’s PAM platform. Work with product development teams to build scalable, modular components. Design and implement scalable architecture patterns. Develop APIs using the OpenAPI Specification for customer access to production infrastructure. Work with backend systems written in Go. Participate in rotational on-call duties with SRE and product development teams. Location Toronto, Ontario, Canada

Join Clutch as a Senior Software Engineer!At Clutch, Canada’s premier online used car retailer, we are committed to providing drivers with an effortless and enjoyable car-buying experience. Our platform allows customers to explore a myriad of vehicles from the comfort of their homes, ensuring they receive their chosen car right at their doorstep, complete with our 10-Day Money-Back Guarantee.Recognized as one of Canada’s Top Growing Companies for two consecutive years and featured in LinkedIn’s Top Canadian Startups, we are expanding our dynamic team. We invite passionate, innovative, and dedicated individuals to contribute to our mission.Founded in 2017 and headquartered in Toronto, Clutch is supported by leading investors such as Canaan, BrandProject, Real Ventures, D1 Capital, and Upper90. For more information, visit clutch.ca.Technology Stack:Full TypeScript stack for both front-end and back-end, with some legacy JavaScript components.Front-end: ReactJS utilizing functional components and the context API.Back-end: ExpressJS integrated with PostgreSQL and Sequelize ORM.Microservices architecture leveraging Docker, Terraform, AWS ECS, and various AWS services.Interservice communication facilitated through RabbitMQ and Apache Kafka.About the Role:We are on the lookout for a Senior Software Engineer (Full-Stack / Backend / Frontend) to play a pivotal role in building and scaling our technology platform. In this position, you will be responsible for writing clean, reliable code, architecting scalable solutions, and collaborating closely with cross-functional teams to enhance our product offerings.

About UsAt Passage, we envision a world where your origins do not dictate the limits of your aspirations. We are not merely a conduit for financial support; we forge connections among families worldwide, unlocking transformative opportunities. We are committed to a future where talented students can pursue their dreams and ambitions, irrespective of their parents' financial status.Our mission is both ambitious and straightforward: by 2030, we strive to eliminate the obstacles that hinder brilliant minds from accessing the opportunities they deserve. Beginning with financial challenges, we provide loans to international students and refugees, enabling them to attain quality education in Canada and open doors of possibilities—not just for themselves but for their families and future generations.Please note that we operate with an in-office working policy, necessitating candidates to either be residents of Toronto or willing to commute to the office several days a week.