Senior Backend Engineer - Integrations & Platform

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 our dynamic team at 1pertinentinc as a Senior Backend Engineer. In this pivotal role, you will be responsible for designing, developing, and maintaining our backend systems. You will collaborate closely with cross-functional teams to deliver high-quality software solutions that enhance user experiences.We are looking for a passionate engineer who thrives in a fast-paced environment and is eager to tackle complex challenges. Your expertise in backend technologies will help us to scale our applications and improve system performance.

Join our dynamic team at Pigment as a Senior Backend Software Engineer. In this role, you will be instrumental in designing and implementing robust backend solutions that empower our innovative platform. You will collaborate with cross-functional teams to enhance system performance and scalability while ensuring a seamless user experience.

Join HelloFresh as a Senior Backend Engineer in our Consumer team, where you will play a pivotal role in shaping our backend systems. You will be responsible for designing, developing, and maintaining robust backend services that power our consumer-facing applications. This role offers the opportunity to work with a talented team of engineers and to contribute to innovative solutions that improve the customer experience.

Senior Backend Software EngineerABOUT USProcurify is a leading AI-driven procurement and accounts payable automation platform designed specifically for mid-market organizations. Our mission is to empower businesses to take control of their spending and achieve significant savings.We are seeking a strategic and insightful engineering leader to join our team and assist in the scaling of our platform, development methodologies, and engineering talent.ABOUT THE ROLEAs a Senior Backend Engineer, you will play a pivotal role on our foundational Platform team. This team is responsible for the essential services, APIs, and integration frameworks that connect Procurify with our clients' vital financial and HR systems.In this hands-on role, you will excel in developing robust and scalable integrations. You will lead the design and implementation of connections to key Accounting and ERP platforms, facilitating seamless data exchange and enabling powerful automated workflows for our clients. Your enthusiasm for API design, problem-solving in complex integration scenarios, and mentoring fellow engineers will be crucial in enhancing the team's capabilities.WHAT YOU’LL BE WORKING ON:Design & Build Core APIs: Take the lead in designing, developing, and maintaining our internal and external APIs, contributing significantly to our API-first strategy by utilizing modern Python frameworks like FastAPI.Build & Maintain Key Integrations: Serve as the go-to expert for our suite of third-party integrations, ensuring reliable connections to critical Accounting/ERP systems (e.g., QuickBooks Online, NetSuite, Microsoft Business Central).Enhance our Platform Architecture: Contribute to the long-term vision of our integration platform, designing and implementing scalable, observable, and resilient systems capable of managing high data volumes from numerous customers.Mentor & Grow Teammates: As a senior engineer, you'll provide technical mentorship to other team members, leading by example during code reviews and sharing your knowledge in technical design discussions.OUR TECH STACK:Backend: Python, Django, FastAPICloud: AWS

About FaireAt Faire, we are redefining the wholesale marketplace with a commitment to supporting local businesses. Our platform empowers independent retailers to thrive in a competitive landscape dominated by giants like Walmart and Amazon. We leverage cutting-edge technology, data analytics, and machine learning to bridge the gap between these entrepreneurs and the products they need to succeed. Imagine your neighborhood boutique – we help them source unique products from around the world, leveling the playing field for small businesses everywhere.By championing the growth of local businesses, Faire is not only fostering economic prosperity in communities worldwide but also leading the charge for the shop local movement. If you share our passion for community and innovation, we invite you to join our team.About this Role:Our engineering team is the backbone of our marketplace, dedicated to writing secure, maintainable, and scalable software. We practice robust engineering principles, deploying code multiple times a day, and continuously improving through data-driven insights and A/B testing.Your Role as a Backend Engineer:Develop essential features for our Kotlin server.Design and implement APIs for our web and mobile applications.Create integration tests to ensure quality across our codebase.Collaborate closely with product teams to enhance user experiences.Take shared responsibility for the success of our product.

About Our TeamThe New Ventures team at HelloFresh is dedicated to expanding our global presence by introducing our core products to new markets and exploring various brands and verticals. As a diverse and globally distributed team, we operate across over 7 brands in more than 15 countries, creating innovative products and engaging experiences that delight customers. With numerous exciting projects in progress, we are motivated to build the next billion-dollar business. If you thrive on bold challenges, we want you on our team!Our team is a collaborative mix of engineers, designers, and product owners, united in our mission to tackle fascinating e-commerce and supply chain challenges related to food consumption. This includes enhancing user experiences to simplify food purchasing and developing robust software solutions to support our distribution centers.We are seeking a talented engineer to help us create elegant solutions and write high-quality code while collaborating with various team members to enhance our consumer-facing applications and the underlying infrastructure. As a part of our Toronto team, you will work alongside skilled engineers who, in partnership with our global teams, have established HelloFresh as the premier meal delivery service worldwide!

Join Spotify's dynamic team as a Backend Engineer focused on our Platform. In this role, you will have the opportunity to design, develop, and maintain backend services that support our vast music streaming ecosystem. You'll work alongside talented engineers to deliver high-quality solutions that enhance user experience and drive innovation.

About the Team The Production Scheduling Technology team is at the forefront of automating and optimizing how HelloFresh orchestrates its meal production processes. We have successfully launched a next-generation internal system that automates the entire planning workflow, significantly impacting how millions of meals are distributed throughout our network. As we enhance this system and prepare for future growth, we are seeking a Senior Backend Engineer with robust backend expertise, a knack for transforming intricate logic into effective and dependable systems, and a moderate understanding of full-stack development to support our internal applications. We prioritize candidates who can contribute to our mission at HelloFresh. We value diverse experiences and believe that anyone can excel in this role, so we encourage you to apply even if you don't meet every single requirement. Responsibilities Develop, enhance, and share ownership of a Python-based algorithmic engine that fuels automated planning, incorporating deterministic logic and constraint-based components. Create, develop, and sustain backend services utilizing FastAPI, ensuring scalable and reliable API interactions with our internal applications. Engage in the complete technology lifecycle, including architecture, implementation, deployment, and operations within our advanced tech stack (EKS, RDS, S3, ElastiCache, Glue, etc.). Collaborate with engineers, analysts, and planners to translate domain insights into robust and maintainable system logic. Advance the platform towards an event-driven architecture using technologies such as Kafka. Assist with frontend requirements for our internal React application, ensuring seamless integration between frontend and backend systems. Enhance system reliability through automated testing, performance optimization, and thoughtful design principles. Foster a culture of knowledge sharing and collective ownership through pairing, design discussions, and collaborative learning. Contribute to the strategic direction of an innovative system. Qualifications Proven experience in backend development, particularly with Python and FastAPI. Strong understanding of API design and microservices architecture. Experience with event-driven systems and related technologies (e.g., Kafka). Familiarity with cloud services and infrastructure (AWS, EKS, RDS). Ability to work collaboratively in a team-oriented environment. Excellent problem-solving skills and attention to detail. A proactive attitude towards learning and sharing knowledge.

Join StackAdapt as a Backend Software Engineer, where you'll be at the forefront of technology. We are seeking a talented engineer to design, develop, and maintain our backend systems. Your expertise will play a critical role in helping us innovate and improve our platform.

Join our innovative team as a Backend Engineer and help us shape the future of hiring software. This fully remote role allows you to work from anywhere while contributing to projects that impact top companies like Netflix, Shopify, and Spotify.At Lever, we pride ourselves on revolutionizing the talent acquisition landscape. As we continue to grow, we seek passionate individuals who are eager to join a company recognized as the #1 workplace in San Francisco and a top employer across the United States. Our culture is centered around people, and we are committed to investing in our team, known as “Leveroos”.This is an exciting opportunity to work with cutting-edge technology and to be part of a collaborative environment where your contributions matter.

Join Our Team as a Senior Backend EngineerAt DualEntry, we're pioneering the future of finance with our innovative AI-driven ERP solutions. As a rapidly growing AI startup, we are revolutionizing the fintech landscape, valued at over $220 billion, by helping businesses transition from outdated on-premise systems.Our AI-native ERP empowers accounting teams to maximize efficiency, reducing manual data entry and streamlining workflows. From startups generating $5M in ARR to publicly traded companies, DualEntry is making the dream of a one-person finance team a reality.We're looking for a Senior Backend Engineer who thrives in a fast-paced environment and is ready to take ownership of projects, crafting features and systems that drive our mission forward.You will play a critical role in our engineering team, shaping our backend infrastructure and ensuring we remain at the forefront of the fintech revolution.

About LeagueEstablished in 2014, League stands at the forefront of healthcare consumer experience (CX) platforms, leveraging artificial intelligence (AI) to connect with over 63 million individuals globally. Our innovative platform empowers payers, providers, and consumer health partners to create high-engagement healthcare solutions that lead to improved health outcomes. With over $285 million raised in venture capital, League enhances the digital experiences for renowned healthcare brands such as Highmark Health, Manulife, Medibank, and Shoppers Drug Mart.Position SummaryWe are looking for a talented Backend Software Engineer to join our dynamic Release Engineering team. This role focuses on Continuous Integration/Continuous Deployment (CI/CD) infrastructure, release automation, and developer tooling. You will play an essential role in enhancing the operational efficiency of our engineering organization’s delivery capabilities.Key Responsibilities:Oversee and execute software releases across diverse platforms including Web, Android, iOS, and CLIs.Design and maintain tools for release automation and bot functionalities.Manage release patch/hotfix requests while coordinating release schedules.Diagnose and resolve issues related to release automation, including rollback procedures.Utilize AI technologies to scale solutions and streamline existing processes.

About ClickHouseClickHouse, a proud member of the 2025 Forbes Cloud 100 list, stands out as one of the most pioneering and rapidly expanding private cloud enterprises. With over 3,000 clients and an astonishing annual recurring revenue growth of over 250% year-on-year, ClickHouse is at the forefront of real-time analytics, data warehousing, observability, and AI applications.The organization’s remarkable momentum was recently reinforced by a significant $400M Series D funding round. In just the last three months, notable clients such as Capital One, Lovable, Decagon, Polymarket, and Airwallex have either adopted our platform or expanded their existing usage. These additions complement an established base of AI trailblazers and global corporations, including Meta, Cursor, Sony, and Tesla.Join us on our mission to revolutionize how businesses leverage data. Be a part of our exciting journey!About the TeamThe ClickPipes Platform is essential for driving our company's growth and ensuring our clients achieve success by effortlessly onboarding and integrating data from various sources into ClickHouse. This role allows you to work at a petabyte scale in a high-velocity environment, offering an outstanding opportunity to tackle complex technical challenges, operate independently, and make a significant impact.Discover some of our team's recent achievements highlighted in our blog:Flexible Scaling and Monitoring in ClickPipesMySQL CDC Connector for ClickPipesThe Evolution of ClickPipesWe seek outstanding backend engineers proficient in diverse technologies, with substantial expertise in Kubernetes, distributed systems, cloud services, and platform reliability. As a team member, you'll collaborate across functions to construct and maintain the robust infrastructure that supports ClickPipes. This position is perfect for individuals who can work autonomously, take initiative, and propel projects forward with a high degree of independence.What will you do?Enhance and scale our high-performance data onboarding platform to effectively manage increasing data volumes.

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 Novoed as a Principal Backend Engineer and lead the development of innovative backend systems that power our cutting-edge educational technology solutions. In this fully remote role, you will collaborate with cross-functional teams to design, implement, and maintain scalable backend architectures. Your expertise will be pivotal in driving the technical direction and enhancing the performance of our platforms.

Principal Backend Engineer – Edge Platform (Advertising Delivery Systems)Full-time Position (Hybrid)Montréal, Canada(English below)Have you ever wondered how outdoor screens manage to display advertisements that seem perfectly tailored to your tastes and interests? This is made possible through Digital Out Of Home (DOOH) advertising, typically enabled by programmatic technology. That’s exactly what we do. Hivestack has transformed the future of our industry by developing a unique full-stack advertising technology platform.On the buyer side, marketers leverage Hivestack’s Demand Side Platform (DSP) to create measurable campaigns that activate DOOH screens in real-time based on consumer behavior and audience movement patterns. On the seller side, DOOH media owners use Hivestack’s Supply Side Platform (SSP), Ad Server, and Header Bidder to manage their inventory and maximize revenue.The secret to our success lies in our incredible global team passionate about innovation. We don't confine ourselves to traditional work models: we embrace change and are unafraid to stand out and champion new ideas. Interested? Join us and make a real impact on digital screens around the world.Job DescriptionReporting to the VP of Engineering, we are seeking a Principal Backend Engineer (Edge Lead) to take technical responsibility for our real-time delivery systems while leading and developing a team of engineers.This is an operational leadership role—a true player-coach position.Key ResponsibilitiesTechnical Responsibility• Architecting and evolving our Ad Server, SSP, Exchange, and DSP execution components• High-throughput, low-latency distributed systems• Performance optimization (latency, memory, throughput)• Reliability, resilience, and incident recovery strategies• Scalability planning and capacity forecasting• Technical guidance for refactoring and long-term improvementsYou will define architectural standards and make critical system design decisions that have a direct impact on revenue and delivery performance.Team Leadership• Direct management of Edge team engineers (Ad Delivery)• Mentorship, performance development, and recruitment• Fostering a culture of collaboration and innovation.

WHO WE'RE LOOKING FORAre you a Backend Engineer with a passion for innovation, collaboration, and adaptability? Join our engineering team to help drive excellence in software development. We’re seeking a candidate who excels in fast-paced, collaborative environments and is dedicated to implementing best practices.You should possess strong technical skills, analytical thinking, and effective communication abilities, complemented by significant experience in software development and design using various technologies and frameworks.If you’re excited about developing cutting-edge technology solutions, creating scalable and maintainable systems, and enjoy collaborating with diverse teams to craft innovative, impactful solutions, we want to hear from you!ABOUT XSOLLAXsolla is a leading global commerce company dedicated to providing robust tools and services designed to tackle the unique challenges faced by the video game industry. We partner with developers, from indie studios to AAA companies, to assist them in funding, distributing, marketing, and monetizing their games. With a firm belief in the future of gaming, Xsolla is committed to uniting opportunities and consistently expanding resources for creators. Based in Los Angeles, California, Xsolla acts as the merchant of record and has empowered over 1,500 game developers to connect with players and grow their businesses worldwide. Our goal is to provide developers with the resources needed to succeed in the gaming landscape.Learn more about us at xsolla.com.

About the RoleJoin ThreatAware as a Backend Engineer and play a pivotal role in developing our core platform. This is an exciting opportunity to be part of a team that's harnessing six years of extensive cyber asset data to build AI-powered capabilities. Your contributions will directly impact global organizations that depend on our solutions for cybersecurity. If you're eager to tackle challenging problems, create valuable products, and make a difference in the cybersecurity landscape, we want to hear from you!Why Choose ThreatAware?At ThreatAware, we empower security teams with a comprehensive view of every device and tool within their organization. With over 150 integrations and deployment in under 30 minutes, we provide real-time visibility across entire IT infrastructures, earning the trust of industries such as finance, legal, energy, and healthcare.We are on the brink of something groundbreaking. With our rich history of accurate cyber asset data, we're integrating AI to revolutionize how security teams analyze data, automate workflows, and proactively manage risks. As a Backend Engineer, you'll contribute to the platform that makes this transformation possible.Your ResponsibilitiesYou will work on both the platform and AI components, tackling a variety of intriguing challenges.Develop and maintain reliable, scalable, and secure backend services using C#/.NET.Contribute to our AI initiatives by utilizing TypeScript and LLMs to create intelligent workflows.Enhance API and database performance within our multi-tenant AWS infrastructure.Write well-tested, maintainable code and engage in architectural discussions and design reviews.Qualifications We SeekProven experience in C#/.NET with a solid background in building backend services.Strong understanding of RESTful API design and relational database principles.Familiarity with cloud platforms, preferably AWS, and CI/CD pipelines.A curious mindset with a desire to learn, grow, and take on increased responsibilities.A security-first approach to software development.