Senior Software Engineer - Infrastructure

About UsAt Marble, we are at the forefront of revolutionizing tax preparation through our AI-powered platform. Our mission is to alleviate the complexities of tax season for mid-to-large accounting firms with intelligent tools that enhance their workflows. As a rapidly growing company, we pride ourselves on our collaborative culture and unwavering commitment to solving significant challenges for our clients.About the RoleWe are looking for a passionate and experienced Senior Software Engineer to play a pivotal role in shaping our AI-first tax platform. This role offers an incredible opportunity for individuals who desire ownership over architectural design, technical strategy, and key product decisions. You will collaborate on both user-facing applications and backend services to create a seamless, intelligent, and user-friendly tax preparation experience.If you thrive in fast-paced environments and are eager to utilize AI technologies to tackle real-world challenges, we would love to hear from you.What You’ll DoBe at the forefront of developing the future of our AI-driven tax preparation platform.Lead the design and implementation of critical components of our product architecture.Build and enhance user experiences across our full technology stack.Navigate the entire product lifecycle with confidence and expertise.Mentor fellow engineers and elevate our team's execution by fostering best practices.What We’re Looking ForExtensive experience in building and scaling production web applications.A strong sense of ownership and conviction in creating exceptional products.A focus on addressing customer needs and delivering maximum value.Bonus PointsExperience with AI products and tools.Familiarity with ETL pipelines or managing data at scale.Background in fast-paced startups with a focus on product-led growth.Experience in the tax, accounting, or fintech sectors.Tech StackFrontend: React, Remix (React-Router)Backend: TypeScript, Node.js (Fastify), PostgreSQL

Join Our Team as a Senior Platform Engineer (Python)About Us: As a leading B2B SaaS company focused on retail analytics, we empower brands and marketing teams to optimize their media campaigns and understand retail data without needing to write code. Our clients, including major players like Home Depot, rely on us for actionable insights that enhance their customer engagement and ROI.Work Environment: This role offers a hybrid work arrangement, with 95% remote work and monthly in-person meetings to foster collaboration among our Toronto-based team.Who We're Looking For: We are seeking a dynamic Senior Platform Engineer to contribute significantly to our Platform team, focusing primarily on back-end development with some responsibilities in infrastructure and DevOps.Key Responsibilities:API Development: Enhance platform scalability and data performance through innovative API designs.Integration Projects: Collaborate with industry giants like Meta, TikTok, and Snapchat on complex ad tech integrations.Task Management Optimization: Take charge of our async task management using Celery, focusing on improving concurrency and managing resource-intensive jobs.Why Work With Us?Our team thrives on collaboration, embracing complex challenges while exploring new technologies. We are committed to building long-term solutions, maintaining profitability, and ensuring quality in everything we do.

Are you ready to take your analytical skills to the next level? Join StackAdapt as a Senior Analyst, Solutions and play a pivotal role in shaping data-driven strategies that empower our clients. In this dynamic position, you will analyze complex datasets, derive actionable insights, and collaborate with cross-functional teams to drive innovative solutions.

Join IXL Learning, a pioneering developer of personalized educational products that impact millions globally. We are on the lookout for a passionate Software Development Team Lead to guide our efforts in creating innovative solutions that simplify integrations for IXL’s major school districts.At IXL Learning, we are committed to developing groundbreaking products that harness advanced technologies to tackle significant challenges in education. With millions relying on our tools for effective learning, we seek exceptional individuals who are eager to address real-world issues faced by students and educators.As a Software Development Team Lead on our Integrations team, you will spearhead the design and development of systems that ensure seamless implementations of IXL within various educational environments. This role offers an incredible opportunity to manage a team of talented engineers while providing hands-on technical and project leadership in a mission-driven, high-growth company. We are excited to create products that profoundly influence the lives of many and invite you to be a part of our journey.This position is full-time, based in our Toronto office, with a work schedule from Monday to Friday and the option to work from home one day per week.

Join Carta as a Senior Software Engineer II, where you will play a pivotal role in developing cutting-edge software solutions that empower businesses and investors alike. You will collaborate with cross-functional teams to deliver high-quality applications and contribute to the entire software development lifecycle, from concept to deployment.

Fivetran is seeking a Senior Database Software Engineer to join the team in Toronto, Ontario. This role centers on developing and refining advanced database systems that form the backbone of Fivetran’s products and services. Key responsibilities Design and architect scalable database solutions to enable both new and existing product features Collaborate with engineering, product, and other teams to deliver reliable and efficient database systems Use in-depth knowledge of database technologies to address complex technical issues and enhance system performance Location This position is based in Toronto, Ontario, Canada.

Are you a creative and skilled Interactive Developer looking for an exciting opportunity to work in a dynamic environment? At System Canada Technologies, we are seeking a passionate individual to join our team on a contract basis. You will be responsible for developing engaging and interactive applications that enhance user experience and drive innovation.

Join Braze as a Senior Software Engineer I in Toronto, where you will leverage your expertise in software development to create innovative solutions. You will collaborate with cross-functional teams to design, develop, and maintain complex systems while ensuring high performance and responsiveness.

Join Lyft as a Senior Software Engineer specializing in Mapping where you will play a pivotal role in enhancing our mapping capabilities. You will collaborate with cross-functional teams to develop innovative solutions that improve our users' experience. This position requires strong problem-solving skills and a passion for building scalable systems.

Role Overview Veeva Systems Inc. is looking for a Senior Software Engineer focused on Infrastructure in Toronto, Canada. This role centers on designing, building, and improving infrastructure that supports our software products. What You Will Do Create and refine infrastructure solutions to support application development and deployment Work with teams across engineering, operations, and product to strengthen system reliability and performance Address scalability and security needs as our technology evolves Impact Your work will help shape Veeva’s technology foundation and support the growth of our software applications.

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.

Position Overview:Join our innovative engineering team at eScribe as a Senior Software Engineer. In this pivotal role, you will design, develop, and maintain essential software applications that drive our business forward. Your expertise will guide the evolution of our technology stack, tackle challenging problems, and mentor junior engineers. Embrace AI-assisted development methodologies and contribute to cutting-edge AI features to enhance our product offerings, ensuring efficient delivery and superior code quality. This position is perfect for a skilled engineer eager to thrive in a dynamic and collaborative setting.Key Responsibilities:Lead the design, implementation, and upkeep of high-caliber software applications and features.Take charge of intricate projects, providing technical direction, mentorship, and support to junior team members.Influence architectural decisions to guarantee software systems are scalable, performant, and maintainable.Write reusable code, develop libraries for future use, conduct code reviews, and uphold coding standards.Establish and maintain coding best practices while ensuring top-notch code quality through thorough reviews.Analyze complex technical issues, optimizing code and enhancing system performance.Collaborate effectively with cross-functional teams, including product managers, designers, and fellow engineers, to deliver innovative software solutions.Develop comprehensive test plans and execute testing to ensure software reliability and robustness.Create and maintain technical documentation, including architecture diagrams, API specifications, and best practices.Actively engage in agile development processes, including sprint planning, stand-ups, and retrospectives.Utilize AI-assisted development tools (e.g., Claude Code, PlayerZero) to boost personal productivity, accelerate development velocity, and improve code quality.Contribute to the integration of AI capabilities into our software solutions by developing AI-powered features alongside senior engineers.

Discover OktaOkta is recognized as The World’s Identity Company, empowering individuals to utilize any technology securely, across any device or application. Our versatile and impartial solutions, including the Okta Platform and Auth0 Platform, deliver secure access, authentication, and automation, positioning identity at the forefront of business security and growth.At Okta, we embrace diverse perspectives and experiences. We value lifelong learners and individuals who can enrich our company with their unique backgrounds.Join our mission to create a world where Identity truly belongs to you.The Access Management GroupThe Access Management group facilitates billions of authentications monthly, developing and maintaining technologies for single sign-on, strong authentication, provisioning, and threat protection. Our Access Management service operates on a cloud-based, secure, reliable, and rigorously audited platform with an impressive 99.99% uptime.Your Role as a Senior Software EngineerWe are seeking a skilled and highly technical full-stack software engineer to become part of our Authentication Experience team. This team, a vital segment of the broader Access Management group, is tasked with crafting exceptional authentication experiences tailored for Okta’s Customer Identity and Access Management (CIAM) customers. You will play a crucial role in expediting the adoption of the Okta Identity Engine, empowering our clients to harness the full capabilities of our advanced platform to create personalized, high-performance identity journeys.Okta caters to a diverse range of organizations across both Workforce and Consumer sectors. These varied environments pose unique challenges; therefore, each organization has distinct requirements regarding their desired authentication experiences. We strive to find the ideal blend of robust security and seamless usability, continuously innovating cutting-edge authentication solutions designed for the dynamic, user-focused landscape of consumer identity.If you have a passion for innovation, a keen interest at the intersection of product flexibility and security, and a desire to influence how the world interacts with technology, we invite you to join our team.

Join Emburse as a Senior Software Engineer specializing in C#. In this role, you will leverage your extensive knowledge in software development to create innovative solutions that enhance our products and services. You will collaborate with cross-functional teams to design, develop, and implement robust applications that meet the needs of our clients.

Join Cohere as a Senior Software Engineer, specializing in Agent Infrastructure. In this role, you will lead the design and implementation of robust software solutions that enhance our agent infrastructure capabilities. Collaborate with cross-functional teams to drive innovation and optimize our systems for performance and scalability.

Role Overview Sentry builds tools that help developers ship better software. With over $217 million in funding and more than 100,000 organizations relying on its platform, including Disney, Microsoft, and Atlassian, Sentry focuses on performance and error monitoring so teams can spend more time building and less time fixing. This Senior Software Engineer position sits within the Billing Infrastructure team in Toronto, Ontario, Canada. The group maintains the systems that track, price, and bill every event across Sentry’s products, supporting both financial accuracy and customer trust. The team works closely with product, engineering, BizOps, marketing, and sales to create billing systems that keep up with new product features and pricing models. Sentry operates a hybrid work model in its global hubs. In Toronto, in-office work is encouraged on Mondays, Tuesdays, and Thursdays to support collaboration. What You Will Do Work on a next-generation usage tracking pipeline that processes hundreds of billions of events each day with low latency and financial-grade precision. Design and build flexible pricing components to support a range of billing models, from simple per-event charges to complex enterprise contracts. These systems help product and sales teams roll out new offerings quickly while maintaining revenue accuracy. Contribute to technical decisions that address data consistency challenges in billing, such as handling event delays, retroactive pricing changes, and distributed reconciliation across Sentry’s infrastructure. About the Team The Billing & Revenue engineering team connects product development, finance, and infrastructure. Their work ensures every observable event, errors, logs, traces, session replays, is measured and billed accurately. The team values expertise in distributed systems, attention to financial detail, and a strong understanding of how Sentry’s products are used. Who Thrives in This Role Engineers who enjoy solving problems that are easy to describe but hard to execute, such as delivering accurate customer billing while managing massive data flows.

About Klue Klue builds competitive intelligence solutions for businesses. The Toronto-based engineering team is growing and looking for a Senior Software Engineer, AI, to help shape the next generation of LLM-powered agents and search systems. Role Overview This position focuses on designing and optimizing backend systems that support advanced agentic workflows. The work centers on retrieval-augmented generation (RAG), dense retrieval, query understanding, and agentic reasoning, all aimed at delivering fast, accurate, and reliable search experiences for Klue's clients. What You Will Do Develop and deploy backend systems for agentic workflows. This includes building retrieval pipelines, orchestration layers, and multi-step agent architectures that turn large volumes of competitive data, such as news, press releases, web updates, Slack, email, reviews, and CRM information, into actionable intelligence. Lead large-scale evaluation of agentic systems. Create and maintain evaluation frameworks (automated, offline, and human-in-the-loop) to measure relevance, quality, latency, and task success. Define success metrics and build infrastructure for continuous measurement. Design and refine retrieval and ranking systems. Work across hybrid retrieval, re-ranking, query rewriting, and post-retrieval synthesis. Balance trade-offs between BM25, dense retrieval, and hybrid methods to ensure agents deliver timely, relevant information. Enhance LLM-powered workflows. Improve prompt design, retrieval strategies, caching, and latency to make agent responses faster, more accurate, and reliable in production. Prioritize customer-centric development. Connect technical decisions to customer outcomes. Use insights from customer interactions to guide feature prioritization and improvements. Adopt an iterative approach, measure impact, and adjust as needed. Location This role is based in Toronto, Ontario. Learn More For more about Klue, visit klue.com.

About Rootly At Rootly, we are dedicated to revolutionizing how organizations manage incidents. Our mission is to provide a reliable incident management platform that empowers companies to respond swiftly and effectively when challenges arise. Our innovative approach has established us as leaders in a new multi-billion dollar segment, and we are seeking exceptional talent to help us achieve our ambitious goals. Our customers, including industry giants like NVIDIA, Figma, Canva, and Tripadvisor, trust Rootly for their critical incident management needs. They appreciate our user-friendly platform and unique partnership approach, which has garnered us a stellar 5-star rating on G2. Join us in creating a reliable future for organizations worldwide. Backed by prestigious investors from Y Combinator to key operators in tech, we prioritize transparency and team involvement in our financial health. We conduct monthly business reviews and share updates through our weekly changelog. About the Role As a Senior Site Reliability Engineer at Rootly, you will play a crucial role in shaping our technical infrastructure. You will thrive in a dynamic environment where each day presents new challenges and opportunities for growth. This position is perfect for individuals who seek ownership, enjoy tackling complex technical problems, and are driven by a mission to enhance reliability. While the work will be demanding, it promises to be one of the most rewarding experiences in your career. Collaborate with product teams to enhance the observability, reliability, and performance of services. Take ownership of our CI/CD pipelines, observability tools, monitoring systems, and incident response processes. Develop tools and automation to reduce manual toil, enhance engineering velocity, and improve developer experience and system reliability. Engage deeply with engineering teams to gain insights into system performance and identify cross-functional reliability and scaling concerns. Design and scale our infrastructure while ensuring top-notch performance and operational excellence.

Relay is a cutting-edge digital banking platform designed to empower self-made business owners with the financial tools and knowledge they need to excel. We aim to transform financial uncertainty into clear visibility, enabling our users to convert hard work into sustainable success. By providing clarity, confidence, and control over every dollar earned, we facilitate the growth of resilient businesses.As part of our dynamic Engineering team, you will play a pivotal role in developing banking products that support millions of small businesses. We are on an exciting journey to reinvent the banking experience, and we are searching for a curious and impact-driven Software Engineer to join our expanding team. This role is perfect for someone who thrives on taking calculated risks, embracing experimentation, and learning from challenges.In this position, you will confront complex challenges head-on, deliver high-quality, robust code, and contribute to systems that power our innovative products. This unique opportunity allows you to work across our entire product suite, influence technical decisions, and deliver features that our customers will love. If you are passionate about creating top-tier fintech solutions in a fast-paced and collaborative environment, this is the ideal role for you.