Full Stack Engineering Intern at Cresta | Toronto

At ZoomInfo, we are where careers take off. We thrive in a fast-paced environment that encourages bold thinking and empowers you to deliver your best work. Join a team that values deep connections, challenges conventional thinking, and celebrates achievements together. With cutting-edge tools that enhance your impact and a culture that supports your aspirations, you will not only contribute—you will drive results swiftly.As a Senior Full Stack Engineer on the Chorus Engagement team, you will play a pivotal role in Chorus.ai, our renowned Conversation Intelligence platform. Chorus processes and analyzes a vast array of sales calls, providing insights that empower sales professionals to excel and compete at the highest levels. You will oversee customer-facing product areas ranging from AI-enhanced tools to advanced data visualizations, architecting solutions capable of managing millions of customer requests daily.Whether your strengths lie in frontend or backend development, your expertise and willingness to learn will find ample opportunity here. You will collaborate with exceptionally talented engineers who will inspire you to reach new heights, all while pursuing ambitious goals that truly make a difference.

ZoomInfo Technologies LLC is hiring a Senior DevOps Engineer in Toronto, Ontario. This position centers on strengthening infrastructure and refining deployment processes to help the organization scale effectively. Collaboration is a key part of this role, as the Senior DevOps Engineer will partner with teams from engineering, product, and operations to design systems that can support ongoing business growth. Key responsibilities Maintain and improve infrastructure to enable reliable deployments Work with cross-functional teams to develop scalable solutions Implement automation to streamline workflows and boost efficiency Use cloud technologies to optimize system performance Location This role is based in Toronto, Ontario, Canada.

At ZoomInfo, we are passionate about accelerating careers. Our fast-paced environment fosters bold thinking and empowers you to achieve your best work. Join a team that values collaboration, challenges the status quo, and celebrates every success. With cutting-edge tools that enhance your impact and a culture that supports your ambitions, you won't just contribute; you'll drive change swiftly.Job Summary:We are on the lookout for a talented and driven Senior DevOps Engineer to play a crucial role in supporting our engineering teams. This position will focus on implementing changes and ensuring compliance with our company's standards for data infrastructure and CI/CD pipelines. The ideal candidate will possess extensive experience with AWS and/or GCP, cloud data streaming and processing services, containerized application deployments, infrastructure automation, and Site Reliability Engineering (SRE) best practices aimed at enhancing performance and cost efficiency.Key Responsibilities:Lead initiatives to apply and promote best practices for data streaming, processing, analytics, and infrastructure monitoring.Deploy and manage services on Kubernetes platforms such as Amazon EKS and Google Kubernetes Engine (GKE).Provision and oversee cloud infrastructure with Terraform, adhering to best security, scalability, and cost-efficiency practices.Optimize CI/CD pipelines with tools like Jenkins, ArgoCD, and GitHub Actions for streamlined automated deployments and testing.Engage with cloud-native data services including AWS Kinesis, AWS Glue, Google Dataflow, Google Pub/Sub, BigQuery, and BigTable.Possess familiarity with workflow orchestration services such as Apache Airflow and Google Cloud Composer.Create and maintain automation scripts and tools using Python to enhance DevOps processes.Monitor system performance, troubleshoot issues, and implement proactive solutions for reliability and efficiency.Apply SRE practices to boost service reliability, scalability, and cost-effectiveness.Analyze and optimize cloud expenditure, identifying opportunities for improvement and executing cost-saving strategies.Ensure compliance with security policies and best practices within cloud environments.Encourage the adoption of company standards and guide data teams towards best practices in DevOps and SRE.Collaborate with cross-functional teams to refine development workflows and infrastructure.

At ZoomInfo, we’re committed to accelerating your career. Our environment is dynamic and fast-paced, fostering bold thinking and empowering you to produce exceptional work. You'll collaborate with passionate teammates who support each other, challenge norms, and celebrate achievements. Equipped with cutting-edge tools and a culture that nurtures ambition, you'll not just contribute; you'll drive impactful change.We are currently on the lookout for a Senior DevOps Engineer who possesses a software-first mindset to join our talented Platform Engineering team. We seek an engineer who perceives infrastructure as a software product rather than just managing tools.This position requires a proactive individual with a comprehensive view—someone who takes initiative, considers the broader implications of their work, and leads complex projects from concept through to production. You will be part of a collaborative global team where effective communication is essential to paving the way for our developers across multiple cloud environments.Key Responsibilities:Platform Development: Design and implement robust, scalable CI/CD platforms utilizing GitHub Actions, creating custom actions and reusable workflows that function seamlessly as an internal product.Software Automation: Build internal tools and CLI utilities in Go or JavaScript to automate intricate SDLC tasks and minimize manual processes.Kubernetes Maintenance: Serve as a maintainer for our Kubernetes ecosystem, ensuring the platform is optimized for developer workloads, scalability, and high availability.End-to-End Ownership: Oversee projects from architectural design through implementation and long-term maintenance, proactively identifying system-wide bottlenecks before they manifest as issues.Declarative Infrastructure: Spearhead the establishment of GitOps workflows utilizing ArgoCD, treating application state and infrastructure as version-controlled code.Cloud Orchestration: Provision and manage complex GCP and AWS environments following software-defined infrastructure principles.Global Collaboration: Collaborate closely with distributed teams of Architects and Engineers, ensuring transparent communication and alignment across varying time zones.

Who We Are: Founded in 2001, Vivid Seats (NASDAQ: SEAT) is a premier online ticket marketplace dedicated to connecting fans with the live events, artists, and teams they cherish. We understand that experiences matter and are committed to creating products that foster genuine human connections. Recognized as one of Built In's top workplaces of 2025, we believe our people are our strongest asset. Our company culture promotes empowerment, encourages collaboration, and embraces innovation by leveraging data to continuously evolve.At Vivid Seats, we harness cutting-edge technology to enhance performance and ignite creativity. We are committed to utilizing AI tools to improve decision-making, streamline workflows, and produce superior outcomes for our customers.

Join Feathery as a Full Stack EngineerAt Feathery, we revolutionize data intake workflows for insurance and wealth management sectors. Top industry players depend on us to streamline critical operations such as underwriting, client onboarding, and automated account openings.With our rapid revenue growth and increasing enterprise demands, we're expanding our engineering team to tackle more complex, data-intensive workflows across our innovative platform.Your RoleAs we grow, the intricacies of our backend systems and the sophistication of our frontend experiences are evolving. We are seeking a Full Stack Engineer to develop and scale our core product capabilities from end to end. This position is perfect for someone passionate about owning features across the entire stack—from API design and backend development to creating intuitive, high-performance user interfaces.You will partner closely with product management, design, and engineering teams to deliver impactful features and influence the overall architecture of our platform.Key ResponsibilitiesEnd-to-End Product DevelopmentDesign and implement features across both frontend and backend systems.Create APIs and services that drive essential product functionality.Develop intuitive, responsive, and high-performance user interfaces.Manage features from inception to production.Backend Systems & InfrastructureBuild and scale backend services for workflow automation and data processing.Develop asynchronous pipelines and distributed systems for managing large data volumes.Utilize AWS services and messaging systems (e.g., SQS) to ensure scalable infrastructure.Maintain reliability, performance, and observability across systems.Frontend Experience & PerformanceImplement UI/UX designs that enhance user experience.Optimize front-end performance to ensure quick and smooth user interactions.

We are seeking a talented Senior Full-Stack Developer who is passionate about creating scalable applications and tools that empower our internal teams. This position emphasizes the integration of AI capabilities into production systems, ensuring that our solutions are not only innovative but also reliable. You will play a key role throughout the development lifecycle—from architecture and implementation to deployment and optimization—while collaborating with cross-functional partners to deliver exceptional solutions.Take the lead on full-stack development initiatives, focusing on AI-enhanced functionality from the design phase to deployment.Work collaboratively across teams to discover opportunities for embedding AI-driven solutions within existing systems and workflows.Design, develop, and maintain both front-end and back-end components, ensuring high standards of code quality, scalability, and performance for new builds and existing applications.Participate in code reviews, contribute to architectural discussions, and uphold shared engineering standards.Enhance and develop data integrations, APIs, and tools to streamline and automate processes.

Role overview AltaML is looking for a Senior Full Stack Software Engineer in Toronto to design and deliver software solutions that integrate artificial intelligence. The position focuses on using Claude Code, the Claude Agent SDK, and the Claude API as core tools at every stage: from planning architecture for machine learning applications to hands-on development and deployment. Responsibilities span the entire technical delivery process, including work across cloud platforms, APIs, and modern front-end frameworks. What you will do Take the lead on technical delivery for projects, including architecture, coding, and deployment of AI-powered applications. Integrate Claude and agentic coding technologies as central components of software solutions. Balance direct engineering work with architectural decisions and technical leadership. Collaborate with clients and internal teams to turn complex requirements into actionable, AI-enhanced solutions. Mentor developers on applying Claude in daily workflows and contribute to shared internal frameworks. Help shape how new AI engineering tools are evaluated and adopted within the team. Requirements Experience building prototypes with Claude Code and scaling them for production use. Strong understanding of agentic development patterns, such as writing clear specifications for Claude, organizing repositories for AI agents, and reviewing AI-generated code. Ability to communicate effectively with both technical and business teams, translating requirements into AI-driven solutions. Solid problem-solving skills, with the ability to choose between LLM-in-the-loop and traditional engineering approaches as appropriate. Interest in machine learning-driven product development and connecting software engineering with intelligent automation and agentic workflows. Location This position is based in Toronto.

Join Ideogram as a Full Stack Product EngineerAt Ideogram, we are on a mission to democratize world-class design, enhancing human creativity through innovative solutions. Our proprietary generative media models and AI-driven creative workflows address significant challenges in graphic design. Our talented team comprises industry pioneers who have contributed to breakthroughs in technologies like Diffusion Models and Google’s Imagen and Imagen Video. We are passionate about combining design, taste, and craftsmanship with cutting-edge research and engineering, delivering experiences that creatives adore.With nearly $100M in funding from top investors like Andreessen Horowitz and Index Ventures, and a headquarters in Toronto alongside a growing presence in NYC, we are expanding rapidly, with goals to triple our team within the next year. We foster a flat organizational structure that encourages ownership, collaboration, and mentorship.About The RoleAs a Full Stack Product Engineer, you will play a crucial role in developing products that empower creators by seamlessly integrating generative AI into their workflows. You will engage with all facets of product development, from designing engaging user experiences to optimizing backend systems that cater to millions. We seek a candidate who possesses a strong product instinct, user empathy, and the ability to thrive in the fast-evolving AI landscape.

About Us: Established in 2001, Vivid Seats (NASDAQ: SEAT) is a premier online ticket marketplace dedicated to connecting fans with the live events, artists, and teams they cherish. We hold a strong belief in the power of experiences, and we are deeply committed to developing products that foster human connections. Recognized as one of Built In's top workplaces in 2025, we consider our people to be our greatest asset. To nurture our talent, we have cultivated a company culture that empowers employees to tackle challenges, promotes collaboration, and continually evolves by harnessing data and inspiring innovation.We are passionate about leveraging cutting-edge technology to enhance performance and unlock creativity. As part of our innovative culture, we actively incorporate AI tools to improve decision-making, streamline workflows, and deliver superior outcomes for our customers.

Join Stripe as a Full Stack Engineer specializing in billing solutions. In this role, you will be pivotal in designing, developing, and enhancing our billing systems. You will collaborate with cross-functional teams to create user-friendly interfaces and robust backend services. Your contributions will directly impact our mission to simplify payments and empower businesses globally.

Join Our Team as a Full Stack EngineerAt Vantage Analytics, we are seeking a passionate Full Stack Engineer to become an integral part of our Product Development Team. In this role, you will leverage your expertise across the technology stack to develop and maintain high-performance, scalable systems that enhance our platform's core functionalities. Collaborating closely with fellow engineers and product managers, you will be responsible for delivering features that are not only technically sound but also centered on user experience. If you share our enthusiasm for the transformative power of exceptional software, we want to hear from you!This is a newly created position, providing a unique opportunity to influence our product direction.

At Citylitics, we provide cutting-edge predictive intelligence that informs where, how, and why infrastructure investments will be made across North America. Our focus on infrastructure encompasses essential services such as water, transportation, transit, roads and highways, broadband, and power systems. This multi-trillion-dollar market represents a significant megatrend that will continue for over 20 years in North America.We transform vast amounts of data from over 40,000 cities, utilities, and public agencies into real-time market signals and invaluable sales intelligence. Our platform empowers leading infrastructure vendors, engineering firms, and construction companies to identify and strategically position themselves for major infrastructure opportunities well in advance, enabling them to cultivate relationships, prioritize projects, and influence project scopes before they reach formal procurement stages.Utilizing a sophisticated network of AI agents, finely-tuned models, and our proprietary infrastructure signals graph, combined with daily human-in-the-loop quality assurance processes, we deliver highly nuanced and reliable sales intelligence. Our platform seamlessly integrates with CRMs, ERPs, and data lakes, embedding actionable insights directly into sales workflows so teams can effectively prioritize their pursuits and strengthen their pipelines.Our mission is to enhance the decision-making process surrounding infrastructure investments, ensuring that critical needs are addressed sooner and that communities benefit from more resilient infrastructure. Join Citylitics and contribute to an industry that will have lasting significance while helping to grow a company that stands at the forefront of applied AI. We operate with a results-driven mindset and a commitment to excellence in a collaborative environment where teamwork is key to overcoming challenges and celebrating successes together.This position offers a hybrid work model based out of our Toronto office.

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 Rockstar, an innovative early-stage startup, as we revolutionize the month-end closing process for enterprise accounting teams. Our founding team combines extensive experience in finance and engineering, having led finance organizations at top tech companies and developed robust month-end close systems in major enterprises. Backed by prestigious investors and finance leaders, we are poised to make a significant impact in the industry.About the CompanyAt Rockstar, we are on a mission to simplify the often complex and tedious month-end closing process for enterprise accounting teams. Our founders possess a unique blend of expertise, having managed finance departments in leading tech firms and engineered month-end close solutions for large corporations. With a record-setting seed investment from top venture capital firms and support from finance executives at renowned technology companies, we are well-equipped to drive change in the accounting landscape.Role OverviewAs we establish our new engineering office in Toronto, we are seeking a founding engineer to play a pivotal role in product development. In this position, you will have the opportunity to influence both the front-end and back-end architecture while collaborating closely with founding members and early adopters to address intricate financial challenges.Key ResponsibilitiesLead full-stack development for essential product features, including reconciliations, flux analysis, and accruals automation.Develop and sustain robust integrations with financial systems such as ERPs, HRIS, procurement software, and CRMs.Design and implement critical backend components, including job frameworks, flexible data ingestion, and complex financial modeling.Adhere to software development best practices by ensuring high code quality, automated testing, and CI/CD processes.Collaborate with the founding team on product strategy, feature prioritization, and user feedback.Establish and maintain planning and agentic workflows utilizing cutting-edge large language models.Engage in technical discussions regarding scalability and security.Contribute to building a dynamic engineering team and fostering a collaborative culture.Required SkillsBachelor’s or Master’s degree in Computer Science or a related discipline.1-3 years of experience in full-stack development, preferably within early-stage startups.Strong background in developing financial systems is highly desirable.Proficiency in front-end technologies, particularly React and NextJS.Extensive back-end development experience with Go or similar programming languages.Solid understanding of relational databases and data modeling.Familiarity with cloud infrastructure, such as AWS or GCP.A willingness to learn and adapt to machine learning concepts.

Location: US or CanadaType: US Applicants - Full-Time; Canadian Applicants - Independent Contractor About Human Agency At Human Agency, we are on an exciting journey of rapid growth, seeking outstanding talent in various disciplines to join our innovative team. Our mission is to attract exceptional individuals—from creative visionaries to technical specialists—who can help us navigate this pivotal phase of our development. We pride ourselves on being a team of doers. Leadership is hands-on, collaboration is key, and every team member plays a crucial role in our outcomes. We foster an environment where feedback is welcomed, learning is swift, and excellence is the goal. Here, the merit of an idea takes precedence over titles, as we strive to meet our clients' expectations and deliver remarkable results every time. Our clients’ missions and products are of utmost importance to us. We immerse ourselves in their goals, acting as dedicated partners in addressing significant challenges. Each product we develop, strategy we devise, or asset we create is designed to be both aesthetically pleasing and functional—tailored for real-world impact. Humans are our most vital asset, and we are committed to hiring individuals who drive us forward. Across all areas—strategy, engineering, design, data, and operations—we search for teammates who elevate our standards and contribute to our growth. Our hiring philosophy is simple: always hire those who inspire us. We collaborate with organizations of all sizes to explore, design, and implement AI strategies that are secure, scalable, and centered around human needs. Our belief is that AI should enhance human capabilities, not replace them; we build with this conviction at the forefront of every engagement. From advisory services to practical implementation and training, we partner with clients to integrate AI in ways that align with their values and objectives, enabling teams to work smarter and unlock new possibilities through innovative solutions. Throughout our journey, we lead with purpose, passion, and a sense of adventure. We engage in meaningful work alongside people who inspire us, making the process a rewarding experience. At Human Agency, our identity and our work ethic are intricately linked. The Opportunity Join us at Human Agency as we shape the future by merging advanced AI technologies with exceptional software development. We specialize in creating scalable, secure SaaS applications that empower enterprise clients to tackle complex challenges efficiently. In this role as a Senior Full-Stack Engineer, you will spearhead development initiatives on high-impact projects at the intersection of AI, machine learning, and secure software engineering.

At Veeva Systems, we are dedicated to revolutionizing the life sciences industry by accelerating the process of bringing therapies to patients. As a trailblazer in the industry cloud sector, we proudly stand as one of the fastest-growing SaaS companies, achieving over $2 billion in revenue last year and poised for remarkable growth in the years ahead.Our core values drive us forward: Do the Right Thing, Customer Success, Employee Success, and Speed. In 2021, we made history by becoming a public benefit corporation (PBC), emphasizing our commitment to balance the interests of our customers, employees, society, and investors.As a Work Anywhere organization, we prioritize your flexibility to thrive, whether you choose to work from home or in our office.Join us in transforming the life sciences sector, where our commitment to positive impact resonates through our customer relationships, employee satisfaction, and community involvement.The RoleWe are actively seeking multiple skilled Full Stack Software Engineers to develop innovative solutions in the life sciences realm. You will leverage cutting-edge front-end and back-end technologies to tackle some of the most significant challenges of our time.The ideal candidates will thrive in a dynamic startup atmosphere while enjoying the stability of a successful, profitable company. You should possess extensive expertise in Java and JavaScript applications and be well-versed in the latest open-source technologies. Experience in enterprise software development or with high-growth tech firms is highly desirable.

Feathery is looking for an entry-level Full Stack Engineer to join the team in Toronto. This role offers a chance to work on products that make a real impact for insurance and wealth management clients. About Feathery Feathery helps insurance and wealth management companies manage data intake more efficiently. Many leading firms rely on Feathery to handle critical processes like underwriting, client onboarding, and automated account openings. With revenue climbing and more enterprise customers coming on board, Feathery is growing its engineering team to support ambitious product and market goals. Why This Role As Feathery expands, both the backend systems and the frontend experience are becoming more advanced. The team is searching for a Full Stack Engineer who wants to take ownership of features throughout the stack. This includes everything from designing APIs and backend logic to building user-friendly, high-performance interfaces. Working closely with product, design, and engineering colleagues, this engineer will help deliver features that shape the future of the platform. Role Overview Work on both frontend and backend product development Design systems and develop APIs Implement user interfaces with a focus on performance and usability Collaborate across teams, especially with product and design This position offers the chance to understand the bigger picture of system architecture while also focusing on delivering polished product experiences. What You’ll Do Full Stack Product Development Design and build features on both the frontend and backend Create APIs and backend services that power core product features Develop responsive, efficient user interfaces Take features from concept through to production launch Backend Systems & Infrastructure Develop and scale backend services for automating workflows and processing data This role is based in Toronto and is ideal for someone early in their engineering career who wants to grow by taking on meaningful product work.

ZoomInfo Technologies Inc. is looking for a Senior Data Engineer based in Toronto, Ontario. This position centers on transforming raw data into actionable insights that support business decision-making. Role overview As a Senior Data Engineer, collaboration with experienced team members is a key part of the job. Projects handled in this role influence how data is managed and applied throughout the company. What you will do Convert large sets of raw data into clear, usable information Support business teams by providing data-driven insights Work closely with colleagues on data-focused projects Location This role is based in Toronto, Ontario, Canada.