Backend Software Engineer at Bree | Toronto

Category-defining tech. Career-defining work.At Cockroach Labs, we are not just another tech company; we are pioneers in creating a scalable, cloud-native distributed SQL database. Our mission is to empower innovative companies by providing them with the tools they need to build and expand their applications seamlessly. We embrace challenges head-on and focus on delivering impactful solutions that truly matter.Because when our customers win, we all win.The RoleWe are on the lookout for a passionate backend software engineer to join our KV team, which is dedicated to enhancing our open-source, cloud-native distributed SQL database. This team plays a critical role in developing the foundational elements of CockroachDB, including Resource Management (data sharding, placement, rebalancing), Admission Control, the Transaction Layer (transactional APIs, distributed transactions, and concurrency control), and the Replication Layer (Raft, distributed lease management, and configuration changes). Collectively, these subsystems form the backbone of CockroachDB, enabling its remarkable scalability and resilience.

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

Join the Revolution at HarveyAt Harvey, we are redefining the landscape of legal and professional services with a bold vision that encompasses an entire ecosystem. By leveraging cutting-edge agentic AI, an enterprise-level platform, and unparalleled domain expertise, we are transforming how essential knowledge work is executed for generations to come.This is an extraordinary opportunity to contribute to a groundbreaking company at a pivotal stage in its journey. With over 1,000 customers spread across more than 58 countries, a strong product-market fit, and exceptional investor backing, we are on an accelerated growth trajectory and are creating a new category in real time. The challenges are ambitious, standards are high, and the potential for personal, professional, and financial growth is unparalleled.Our team is comprised of talented, driven individuals who are deeply committed to our mission. We operate with a sense of urgency and ownership, tackling problems from ideation to execution. We maintain close relationships with our customers, collaborating across all levels to address significant challenges with care and speed. If you thrive in dynamic environments, strive for excellence, and wish to influence the future of work alongside a team that continuously raises the bar, we welcome you to join us in building something remarkable.At Harvey, we’re not just envisioning the future of professional services; we are actively crafting it today.Role OverviewAs a Senior Backend Software Engineer at Harvey, you will be instrumental in laying the groundwork for our product platform while developing user-facing features for some of the world's leading law firms and enterprise clients. Your team will manage the platform layer that ensures secure, reliable, and adaptable experiences, including notifications, permissions, and feature flag infrastructure. You will also create enterprise-grade collaboration tools tailored for law firms.Your responsibilities will include designing and managing systems that serve as the backbone of our operations and significantly influence how users engage with Harvey’s AI-enhanced legal solutions. This role is perfect for engineers who are eager to oscillate between extensive platform architecture and hands-on product development.This position is based in Toronto, Canada, and we operate under an in-person work model, offering relocation assistance to new team members.What You’ll DoDesign and develop robust backend infrastructure, including authentication systems, user permissions, feature flagging, notifications, and document management integrations.Enhance and evolve Harvey’s internal product platform, facilitating development across various product lines and engineering teams.Collaborate with cross-functional teams to identify and address user needs, ensuring a seamless experience.Implement best practices in software development and contribute to a culture of continuous improvement within the engineering team.

Okta builds secure identity solutions for both people and AI, providing trusted infrastructure that helps organizations manage access in a complex technology landscape. The company’s mission centers on delivering secure, reliable access for everyone. The Privileged Access Management (PAM) team at Okta uses an identity-first approach to tackle privileged access challenges. By applying Zero Trust principles designed for cloud environments, the team enables organizations to control access to sensitive servers, databases, and cloud resources. Their work ensures that only authorized users and systems can reach critical assets when needed. Role overview This Staff Backend Engineer position focuses on distributed systems and core software infrastructure. The role involves deploying code that safeguards real-world infrastructure for Okta’s customers. Contributions in this role support several feature teams and influence the speed, reliability, and usability of the product. Success in this position requires a strong understanding of how systems connect, an appreciation for solid abstraction, and the ability to adapt those abstractions as products change. What you will do Advance the core architecture of Okta’s PAM platform. Collaborate with product development teams to build scalable, modular components. Design and implement scalable architecture patterns. Develop APIs using the OpenAPI Specification to enable customer access to production infrastructure. Work with backend systems written in Go. Participate in rotational on-call duties alongside SRE and product development teams. Location This role is based in Toronto, Ontario, Canada.

Join Steel as a Member of the Technical Staff in our Infrastructure team, where you will play a pivotal role in building and maintaining robust systems that support our innovative projects. As part of a dynamic team, you'll leverage your technical expertise to enhance our infrastructure capabilities.

"Embrace the power of rapid learning as an engineer in the AI era."What We Seek1. Strong Engineering FundamentalsAt Viggle AI, we believe in the versatility of our engineers, regardless of their specialization—be it frontend, backend, or algorithms. What truly counts is your robust engineering foundation and your capacity to simplify, refactor, and enhance complex systems.As AI transforms the tech landscape at a rapid pace, those with a strong grasp of fundamental engineering concepts can easily adapt and emerge as well-rounded, full-stack contributors. You will take the initiative in building intricate systems and engage closely with product and design teams to create exceptional user experiences.2. Outstanding Learning AptitudeIn an environment defined by swift technological advancements, past knowledge can quickly become obsolete. We prioritize your ability to swiftly learn new open-source tools, adapt to emerging technologies, and thrive in uncertain situations while executing effectively.We invite curious, agile thinkers who are enthusiastic about exploring technology and overcoming challenges to join our dynamic team.About Us:Viggle AI is an innovative startup supported by prominent investors such as a16z and TSFV. We are at the forefront of the Generative AI revolution, focusing on controllable video generation for content creators, providing cutting-edge technology that enables creators to bring their visions to life.Our rapidly expanding app is cherished by a diverse range of creators, from Hollywood professionals to TikTok influencers, and boasts a user base exceeding 30 million, along with hosting the second-largest Discord community globally.Benefits: Thriving startup atmosphere: build diligently, ship quickly, and grow continuously Competitive salary and equity package Comprehensive dental and health insurance Free meals and a vibrant, enjoyable office environment

Since its inception, Fivetran has been dedicated to simplifying and ensuring reliable access to data, akin to the reliability of electricity. Our customers benefit from seamless data integration into their warehouses, ready for querying without the burden of engineering or maintenance. We take pride in empowering organizations to become genuinely data-driven through our innovative technology.About the RoleWe are seeking a Staff Software Engineer to join our Reverse ETL product engineering team.Previously known as Census, we became part of Fivetran in May 2025 to enhance our warehouse-first data movement solutions. We are now integrating our product into the Fivetran dashboard, delivering top-tier data activation capabilities to all our clients.In this role, you will be instrumental in embedding data activation features into the Fivetran platform across various aspects such as user interface, authentication, billing, data models, and more. As a senior member of a diverse and collaborative agile team, you will work alongside engineers of varying experience levels.This is a full-time position based in our Toronto office. We offer a hybrid work model that combines remote flexibility with in-person teamwork, including two days a week in the office to foster connections and collaboration.

About Alloy RiverAt Alloy River, we are pioneers in developing agentic applied AI specifically tailored for the finance and accounting sectors. In a world where accounting processes are often disjointed, manual, and reactive, we strive to create intelligent, structured, and decisively operational solutions. Our objective is to revolutionize finance, transforming it from a slow, labor-intensive reporting function into a dynamic, real-time strategic engine that drives profit and ensures control.We have fundamentally re-engineered the general ledger, integrating automation, workflow orchestration, and applied AI into its very core. Rather than having accountants shuffle data between various tools and manage tedious checklists, our advanced system generates outcomes, highlights exceptions, and amplifies leverage over time. This is not mere incremental enhancement; it represents a comprehensive redesign of financial infrastructure for an AI-driven future.With over $30 million raised to date from notable investors including Portage Ventures, Electric Capital, Elad Gil, and distinguished angels such as Tobi Lütke and Balaji Srinivasan, we are expanding our operations with the finest builders, operators, and craftsmen in the industry.Role OverviewIn this pivotal role, you will be the architect behind our foundational systems. The patterns you design will dictate the movement and settlement of financial data across the ledger, enabling others to build upon it rapidly and securely. Your responsibilities will encompass core system architecture, integration infrastructure, and the abstractions that ensure a cohesive and scalable codebase. Your work will be critical to product builders, agents, and future team members. Managing financial data requires meeting rigorous standards that most software does not encounter, and your contributions will set the benchmark.What You'll Work OnLead the development of the fundamental patterns that dictate the movement, matching, and settlement of financial data - the essential layer upon which everything else relies.Create essential primitives that product builders can leverage instead of reinventing: counterparty enrichment, object-arrival matching, and transaction reconciliation.Develop abstractions that empower engineers and agents to contribute effectively while navigating the complexities beneath.Serve as the architectural authority for the team - reviewing methodologies, guiding new projects, and maintaining the coherence of the codebase.What We're Looking ForThis position requires a robust technical foundation and a proven track record of developing systems that serve as the backbone for other engineers. This is not a role for generalists; we seek individuals with substantial experience in building reliable systems.

Infrastructure Technical Staff MemberOn-site | Full-timeCompensation: CA$190K – CA$280KJoin our innovative team at mlabs as we create open-source browser infrastructure that drives the future of AI agents. With over 6,000 stars on GitHub and millions of browser sessions served monthly, our platform has experienced phenomenal growth, expanding 50x in 2025 alone. Our technology empowers developers to create seamless web interactions through our robust API.As one of the pioneering team members, you will collaborate with a high-performance group of four talented individuals, backed by top-tier investors, as we tackle the most challenging issues in distributed systems—from kernel-level debugging to global VM orchestration.The RoleAs an Infrastructure Technical Staff Member, your mission will be to build and enhance the distributed systems that support millions of browser sessions. Given the resource-intensive nature of browsers, your focus will be on optimizing performance, ensuring rapid startup times, and maintaining strong multi-tenant isolation across our infrastructure.Key Responsibilities:Global Orchestration: Design and maintain VM orchestration using technologies such as Nomad, Firecracker, and Kubernetes, with a focus on intelligent scheduling and achieving sub-second cold starts.Systems Engineering: Implement kernel-level observability with eBPF and enhance resource isolation through cgroup v2 and NUMA scheduling.Networking: Develop high-performance networking layers, including anycast routing and cross-region failover.Infrastructure as Code: Manage multi-cloud deployments across AWS, GCP, and Azure while overseeing customer VPCs with Pulumi.Product Ownership: Create developer tools for reliable browser automation and actively contribute to our open-source ecosystem.RequirementsExperience: A minimum of 5 years in operating production-scale distributed systems capable of processing thousands of requests per second.Linux Internals: Extensive knowledge of the Linux kernel, syscall optimization, and eBPF.Security & Isolation: Proven experience with multi-tenancy, resource limits, and security boundaries.Network Fundamentals: Competency in diagnosing complex production issues such as packet loss or routing failures at the protocol level.Execution: A proactive approach to ownership of outcomes from architecture through to deployment.

Role overview This Technical Staff Member position focuses on migrations for Cockroach Labs in Toronto, Canada. The role centers on supporting organizations as they move their data and systems to Cockroach Labs' database products. Collaboration with colleagues from various teams is a key part of planning and carrying out migration strategies that protect data and minimize downtime. What you will do Guide clients through the process of transitioning to Cockroach Labs' database solutions Work closely with teams across the company to design, develop, and implement migration plans Emphasize data integrity and aim to reduce service interruptions throughout migrations

Join our dynamic team at Carta as a Staff Software Engineer, where you will play a pivotal role in shaping the future of equity management and ownership. You will be responsible for designing and implementing robust software solutions that enhance our platform's performance and scalability. If you're passionate about technology and innovation, this is the perfect opportunity for you to make a significant impact.

Join Us at HarveyAt Harvey, we are revolutionizing the landscape of legal and professional services. Our approach is not merely incremental; we are committed to a comprehensive transformation. By leveraging cutting-edge AI technologies, a robust enterprise platform, and profound expertise in the domain, we are redefining how critical knowledge work is executed for generations to come.This is an exceptional opportunity to contribute to a generational company at a pivotal moment in its growth. With over 1,000 clients across 58 countries, a strong product-market fit, and support from world-class investors, we are experiencing rapid growth and creating a new category in real-time. The challenges are ambitious, the standards are high, and the potential for personal, professional, and financial growth is unparalleled.Our team consists of sharp, motivated individuals who are deeply dedicated to our mission. We operate with urgency, take ownership of our challenges, and are committed to delivering impactful solutions — from initial concepts to long-term results. We maintain close relationships with our customers, from leadership to engineers, collaborating to address real problems with urgency and care. If you thrive in dynamic environments, strive for excellence, and wish to influence the future of work alongside high-achieving peers, we invite you to build with us.At Harvey, we are scripting the future of professional services today, and we are only just beginning.Role SummaryAs a Backend Software Engineer at Harvey, you will be instrumental in building the foundational infrastructure of our product platform, while also developing user-facing features for some of the world's leading law firms and enterprise clients. This team is responsible for the platform layer that ensures secure, reliable, and adaptable experiences for our customers, including notifications, permissions, and feature flag infrastructure. Additionally, we create enterprise-grade collaboration tools tailored for law firms.You will design systems that serve as critical infrastructure for the wider company, directly influencing how our users engage with Harvey's AI-driven legal tools. This position is perfect for engineers eager to oscillate between in-depth platform architecture and hands-on product development.This position is based in Toronto, Canada. We operate on a hybrid model, with a requirement of 3+ days in the office per week, and we offer relocation assistance to new hires.

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.

Discover OktaAt Okta, we are revolutionizing identity management. Our mission is to enable individuals to securely utilize any technology, anytime, on any device or application. Through our versatile Okta Platform and Auth0 Platform, we deliver secure access, authentication, and automation, placing identity at the forefront of business security and growth.We value diverse perspectives and experiences at Okta. We're not just seeking candidates who meet every requirement; instead, we are looking for lifelong learners who can enrich our team with their unique insights.Join us in creating a world where identity is in your hands.The TeamOur Workforce Identity Cloud Security Engineering group is at the cutting edge of innovation, turning visionary ideas into top-notch security software solutions that support large-scale, mission-critical applications. Our security engineering team possesses a unique skill set that merges security expertise with the ability to design, implement, and deploy security features seamlessly, enhancing product functionality without hindrance. We are committed to elevating customer safety and privacy through robust security services integrated with the Okta core product.The RoleWe are in search of a seasoned and enthusiastic Staff Software Security Engineer to join our Workforce Identity Cloud Security Engineering group. This role focuses on architecting and developing security solutions that strengthen our frameworks and infrastructure. You will be encouraged to implement defense-in-depth strategies, adhere to industry security standards, and uphold the principle of least privilege, thereby enhancing our security posture.This high-impact position is set within a security-focused, dynamic organization that is on the brink of significant growth and achievement. You will serve as a key liaison between the Security and Engineering teams, forging technical synergies and shaping the security roadmap. Your efforts will concentrate on enhancing security and privacy aspects across our services, executing on a weekly release schedule. You will have the autonomy to propose exciting new projects for our roadmap and engage in initiatives utilizing cutting-edge technologies. Join us and contribute to transforming the cloud computing landscape.What You Will DoCollaborate with engineering and security teams to define innovative security roadmap requirements.Advocate security best practices and promote secure coding methodologies.

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.

About ClutchClutch stands as Canada's premier online used car retailer, offering a seamless car-buying experience that empowers drivers to explore a wide selection of vehicles from their homes. With the added convenience of door-to-door delivery and the assurance of our 10-Day Money-Back Guarantee, we prioritize customer satisfaction and peace of mind.Recognized as one of Canada's Top Growing Companies for two consecutive years and featuring on LinkedIn's list of Top Canadian Startups, we are eager to welcome inquisitive, dedicated, and ambitious individuals to our expanding team.Founded in 2017 and headquartered in Toronto, Clutch has garnered support from prestigious investors including Canaan, BrandProject, Real Ventures, D1 Capital, and Upper90. To explore more about us, visit clutch.ca.TechnologyUtilizing a full TypeScript stack for both front-end and back-end development, including legacy JavaScript.Front-end development with a ReactJS application featuring functional components and the Context API.Back-end operations utilizing ExpressJS alongside PostgreSQL and Sequelize ORM.Implementing a microservices architecture with Docker, Terraform, AWS ECS, and various AWS services.Facilitating interservice communication through RabbitMQ and Apache Kafka.About the RoleClutch is in search of a Staff Software Engineer / Engineering Lead to spearhead technical excellence, deliver intricate solutions, and influence the trajectory of our platform. This pivotal role demands leadership skills and a commitment to collaborative problem-solving.

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.

Be a Part of Revolutionizing Finance.At Robinhood, our mission is to make finance accessible to everyone. We are on the verge of witnessing a significant wealth transfer, with an estimated $124 trillion poised to change hands over the next two decades. If you are eager to be part of this transformative era in finance, we invite you to explore this opportunity.About Our Team and Your RoleWe are assembling a world-class team dedicated to applying cutting-edge technologies to tackle major financial challenges. We seek innovative thinkers, adept problem-solvers, and builders committed to making a real impact. At Robinhood, complacency has no place; we are here to enable ambitious individuals to achieve their career best. Our high-performing, fast-paced environment is underpinned by a strong ethical foundation, with expectations and rewards both set high.Our primary aim is to lead in democratizing access to equity markets—both private and public—by facilitating on-chain asset trading that is available 24/7.As a Staff Software Engineer, you will be instrumental in advancing key projects related to Tokenization, Robinhood Chain, and the Robinhood Wallet. In this role, your leadership will be vital as you coach and elevate your peers, drive engineering excellence, and maintain the highest standards of quality.This position is located in our Toronto office, where in-person attendance is required at least three days a week.We believe in the power of collaboration that in-person work fosters, and our office environment is crafted to inspire energy, innovation, and community among high-performing teams.Your Key ResponsibilitiesLead the technical vision and execution for Robinhood Chain, the Tokenization Engine, and the Robinhood Wallet.Design, develop, and operate the essential services that power these platforms.Stay hands-on by writing production-level code, managing complex implementations, and setting standards for engineering quality.Enhance developer practices and promote the integration of cutting-edge AI tools to optimize engineering outcomes.Champion technical excellence in reliability, accuracy, observability, and security.Mentor fellow engineers and elevate the technical standards through design reviews and architecture discussions.Influence the strategic direction of the platform beyond your immediate projects.

Join Nubank as a Staff Software Engineer in our innovative Crypto team! We are looking for passionate individuals who thrive in a fast-paced environment and are excited about revolutionizing the financial landscape through technology.As part of our dynamic team, you will play a crucial role in designing and implementing cutting-edge solutions that enhance our crypto offerings. Your expertise will help us deliver exceptional value to our customers while driving the company's growth.