Senior Software Developer - Features (Backend, Full-stack)

About Range Group Range Group supports professional travel advisors with technology and 24/7 support. The company manages $4.5 billion in annual travel sales and believes travel advisors make every trip better. Range Group also dedicates 10% of group profits to social impact through the Range Foundation, funding exploration, education, cultural projects, and…

Join jerry.ai as an Engineering Team Lead for our Core Product Engine, where you will spearhead the development of innovative backend solutions. In this pivotal role, you will lead a talented team of engineers, drive architectural decisions, and ensure the successful delivery of our core product offerings. Collaborate cross-functionally with product managers and designers to translate complex requirements into scalable and efficient backend systems. If you are passionate about building robust technology solutions and fostering a collaborative team environment, we want to hear from you!

Join Stripe as a Backend/API Engineer specializing in Billing, where you will play a crucial role in enhancing our platform's capabilities. You will be responsible for designing and developing RESTful APIs that integrate seamlessly with various services, ensuring robust performance and scalability. Collaborate with cross-functional teams to create innovative solutions that enhance user experience and drive business growth.

About HTS MediaHTS Media serves as Hopper's dynamic advertising and media division, dedicated to facilitating connections between travel brands, suppliers, and travelers on a grand scale. We amplify advertising placements across Hopper's mobile application and through our extensive B2B partnerships, which feature renowned companies such as Capital One Travel and TripAdvisor. Our ambition is to establish the leading retail media network within the travel industry, transforming advertising into a significant profitability engine for Hopper and our collaborators, similar to the success seen by entities like Instacart, Uber, and Amazon.Although we are in the formative phases of our roadmap, HTS Media has swiftly emerged as one of Hopper's most rapidly expanding and profitable business units. The engineering team plays a crucial role in the scaling of our platform, ensuring that our ad tech solutions yield quantifiable results for advertisers while providing seamless experiences for travelers.About the RoleAs a Senior Backend Engineer on the HTS Media team, you will be instrumental in developing the engine that fuels our advertising ecosystem. Your primary responsibilities will include designing, constructing, and optimizing high-throughput, low-latency services that manage ad requests, conduct auctions, and deliver millions of pertinent offers to travelers in real time. This is a pivotal role where your contributions will directly influence platform performance, the success of advertisers, and Hopper's financial outcomes.You will confront intricate challenges inherent to the ad tech sector, from enhancing our real-time bidding (RTB) algorithms to guaranteeing millisecond response times even under substantial loads. As a technical leader, you will mentor fellow engineers, guide architectural decisions, and uphold the standards for producing high-quality, scalable code. If you are enthusiastic about architecting distributed systems that function at an extensive scale, this is the ideal opportunity for you.

At Plusgrade, we believe travel is about the journey, not just the destination. Our mission is to redefine the future of travel by partnering with over 250 leading companies in the airline, hospitality, cruise, passenger rail, and financial services sectors. We focus on creating significant revenue opportunities through exceptional customer experiences. Emphasizing our core values of ambition, innovation, and collaboration, we are committed to exceeding expectations and fostering a culture of excellence. Join us as we turn ordinary travel into extraordinary experiences.ROLE OVERVIEW:As a Backend Developer specializing in Machine Learning within our ML Applications team, you will play a pivotal role in designing, developing, and deploying advanced machine learning solutions to tackle complex business challenges. This position demands a robust background in software development, a keen interest in innovative technologies, outstanding problem-solving abilities, and the capacity to thrive both independently and as part of a dynamic team.This position reports directly to the Director of ML Applications.KEY RESPONSIBILITIES:• Collaborate in a dedicated team focused on enabling machine learning applications across the organization.• Develop, scale, and operationalize state-of-the-art machine learning solutions.• Create scalable and resilient ML pipelines for predictive analytics, enhancing key performance indicators such as member engagement and revenue.• Implement robust monitoring processes for production ML pipelines.• Support production systems to deliver batch and real-time streaming model predictions.• Engage actively in solution design and modeling, ensuring adherence to best practices and ML architectural principles.• Partner closely with Product, Engineering, and Marketing teams to develop data-driven ML solutions addressing critical business questions.• Deploy models, assess their performance, and continuously refine them.• Oversee model retraining, drift monitoring, pipeline automation, quality control, and governance of production models.• Collaborate with the Operations team to ensure effective production support.CANDIDATE PROFILE:• Minimum of 4 years of experience in ML pipelines and ML-focused Python development.• Strong understanding of software engineering principles and practices.• Proficient in RESTful APIs.• Experienced in building ML and LLM-based recommendation systems.• Proven track record in designing and developing backend components optimized for low-latency and high-performance applications.

About the RoleAt Vantage Analytics, we are seeking a talented Senior Backend Engineer to join our dynamic team. In this pivotal role, you will be instrumental in developing features and integrating systems with our partners. As a subject matter expert in backend technologies, you will also provide mentorship to fellow engineers. Expect to engage extensively with external APIs for data retrieval and to design and implement APIs facilitating effective data exchanges. Your expertise will help us manage large datasets while ensuring our services remain reliable and performant.Your contributions will support various product teams in maintaining robust architecture, exceptional code quality, and timely project delivery. You will act as a trusted reviewer for SQL and Django ORM modifications, setting clear benchmarks for database and service performance, and aiding in design and trade-off decisions that enhance the scalability of our platform.This opening serves as a backfill for an existing vacancy, making it an exciting opportunity to step into a crucial role within our engineering department.

Okta is seeking a Staff Backend Engineer in Toronto, Ontario, Canada, with a focus on Non-Human Identities. This position involves building backend systems that support secure management of digital identities for devices, services, and applications. The work contributes directly to Okta’s mission of advancing digital identity solutions for organizations. Key responsibilities Design and implement backend systems that manage non-human digital identities Collaborate with fellow engineers to deliver secure and scalable solutions Influence the architecture and direction of Okta’s identity products Team environment The engineering team tackles complex identity challenges together, using modern technology. Security, reliability, and innovation guide the team’s approach to each project.

Join Our Team About Stripe At Stripe, we are redefining financial infrastructure for businesses of all sizes. From global enterprises to innovative startups, millions trust us to manage their payments, drive revenue growth, and unlock new business opportunities. Our mission is to elevate the GDP of the internet, presenting a unique chance for you to engage in transformative work that impacts the global economy. About Our Organization and Team The DEeP organization at Stripe is dedicated to enhancing all our products through a unified platform, facilitating the rapid delivery of high-quality experiences across our UI and API landscapes. Our focus is on creating a consistent, scalable developer experience that empowers both internal and external developers to maximize value for merchants using Stripe. The IAM Login Services team is pivotal in managing authentication processes at Stripe. We are expanding our authentication capabilities to enable more teams to integrate seamlessly and to support AI agents accessing Stripe. This initiative is crucial as the demand for secure Identity and Access Management (IAM) solutions grows alongside our expanding enterprise customer base.Team matching will occur during the final stages of the hiring process, and we may also consider you for other teams based on your skills and location. More details on our team matching process can be found here. Your Role As a Backend Engineer on the IAM Login Services team, you will be instrumental in platformizing Stripe's authentication architecture and broadening our authentication offerings to accommodate AI agents. Your contributions will significantly impact our enterprise customers and the overall business, allowing you to work on innovative security and IAM infrastructure while collaborating across teams to implement groundbreaking solutions. Key Responsibilities Enhance and expand Stripe's OAuth offerings. Develop and refine SSO/SCIM products to boost adoption among enterprise clients. Collaborate with diverse teams to create a next-generation authentication platform for Stripe.

Join Smile Digital Health as an Intermediate Backend Developer. In this pivotal role, you will collaborate with engineering teams to design, implement, and maintain key components of our innovative platform. This position offers the opportunity for autonomy, allowing you to contribute throughout the entire development lifecycle—from requirements analysis to final delivery. As you grow in this role, you will deepen your technical expertise, preparing you for future senior-level responsibilities.

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.

Join us as a Principal Software Engineer, where you'll play a pivotal role in designing and developing innovative software solutions that empower organizations to optimize their hiring processes. As a key member of our engineering team, you'll collaborate with top-tier talent, utilizing cutting-edge technologies to create software that redefines the future of recruitment.Lever, founded a decade ago, is on a mission to revolutionize the way companies attract and hire exceptional talent. Our platform is trusted by industry leaders like Netflix, Shopify, and Spotify, and we've established ourselves as innovators in the talent acquisition space. Recognized as the #1 workplace in San Francisco and a top employer in the United States, we take pride in our people-first culture and are committed to nurturing our talented workforce.

Join our innovative team at System Canada Technologies as an Embedded Software Engineer. In this role, you will develop cutting-edge embedded software solutions that drive our products. You'll collaborate with cross-functional teams to design, implement, and test software for embedded systems.

Join our dynamic team at Kaseya as a Principal Software Engineer, where you will lead the design and implementation of innovative software solutions. You will collaborate with cross-functional teams, mentor junior engineers, and drive best practices in software development.

Role overview Veeva Systems is hiring a Senior Software Engineer focused on infrastructure in Toronto, Canada. This role centers on designing and building software that supports and improves our cloud-based platforms. The work directly impacts scalability and performance across our systems. What you will do Design and implement software solutions for infrastructure needs Work closely with teams from different disciplines to strengthen our cloud platforms Contribute to projects that improve system scalability and performance

ZoomInfo Technologies Inc. seeks a Senior Software Engineer based in Toronto, Ontario. This position centers on building and enhancing software that drives a data-focused platform. Collaboration is key, as the role involves working with colleagues from various teams to design, develop, and refine new features. Strong attention to performance and scalability is expected throughout the development process. Responsibilities Lead the development of new software solutions for the platform Collaborate with cross-functional teams to design and deliver features Implement and optimize code to ensure high performance Support the platform’s scalability as usage and data volume increase What Success Looks Like Success in this role means delivering reliable, high-performing features that scale with the platform’s growth. The Senior Software Engineer will play a key part in shaping the technical direction of the product while partnering closely with peers across the company.

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.

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.

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.

Join Retain as a Software Engineer and be part of a dynamic team dedicated to innovation and excellence. We are looking for passionate individuals who thrive in a collaborative environment and are eager to tackle challenging projects.In this role, you will be responsible for designing, developing, and maintaining software applications that meet the needs of our clients. You will work closely with cross-functional teams to ensure high-quality deliverables and contribute to the overall success of the company.

About the Role CommerceIQ is hiring a Software Development Engineer in Toronto, Ontario. This role focuses on building and maintaining software that strengthens our e-commerce platform. The work directly shapes how our business serves customers. What You'll Do Design, develop, and support software solutions for e-commerce functions Collaborate with team members to solve technical challenges Contribute to projects that drive business results and improve customer experience Who We're Looking For Curious engineers who enjoy solving problems Motivated to grow skills and take on new challenges Ready to work in a collaborative, evolving environment