Senior Full-Stack Developer at klick1 | Toronto

Findem is looking for a Senior Staff Full Stack Engineer based in Toronto or working remotely. This role centers on building and improving the company’s platform through hands-on development and close collaboration with colleagues from different disciplines. Role overview This position involves designing, developing, and refining features that support Findem’s products. The Senior Staff Full Stack Engineer will work with cross-functional teams to deliver solutions that drive the platform forward. What you will do Develop and enhance platform features using full stack technologies Collaborate with product, design, and engineering teams to deliver impactful updates Apply deep experience in full stack development to solve technical challenges Requirements Extensive background in full stack engineering Experience working with cross-functional teams Ability to work remotely from Toronto or elsewhere

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 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.

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.

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.

Cresta is dedicated to transforming customer interactions into strategic advantages by harnessing the full potential of contact centers. Our innovative platform merges cutting-edge AI technology with human expertise to provide contact centers with valuable customer insights, streamline communication processes, and elevate team performance. Founded by renowned Stanford AI lab co-founder Sebastian Thrun, known for his pivotal roles in Google X and Waymo, our leadership team also includes Ping Wu, co-founder of Google Contact Center AI, and Tim Shi, an early member of OpenAI.Join us on an exhilarating journey to redefine the future of work with AI. The future is now, and it’s at Cresta.

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.

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.

Join the Revolution at HarveyAt Harvey, we are at the forefront of transforming the legal and professional services landscape, implementing not just incremental changes, but a comprehensive overhaul. By leveraging cutting-edge AI technology, a robust enterprise platform, and our extensive domain expertise, we are redefining how essential knowledge work will be conducted for generations.This is a unique opportunity to contribute to the creation of a groundbreaking company poised for significant growth. With over 1000 clients across 58 countries, a strong product-market fit, and esteemed investor backing, we are rapidly expanding and establishing a new category in real-time. Our work is ambitious, our standards are high, and the potential for personal, professional, and financial growth is unparalleled.Our team is comprised of talented, driven individuals who are deeply dedicated to our mission. We operate with urgency and intensity, taking ownership of the challenges we face — from initial ideation to long-term results. We maintain close relationships with our clients, collaborating across all levels to address real-world issues with dedication and care. If you excel in dynamic environments, strive for excellence, and wish to help mold the future of work alongside a team that continually raises the bar, we invite you to join us in this journey.At Harvey, we are writing the future of professional services today — and we are just getting started.Position OverviewAs a Staff Full Stack Software Engineer at Harvey, you will be instrumental in establishing the core of our product platform while developing user-facing features for some of the leading law firms and enterprise clients globally. You will lead the development and maintenance of the platform layer that delivers secure, reliable, and adaptable experiences for our customers, including components like notifications, permissions, and feature flag infrastructure. Our mission also includes creating top-tier collaboration product experiences tailored for law firms.You will be responsible for designing and overseeing systems that serve as foundational infrastructure for the entire organization, directly influencing how our users interact with Harvey’s AI-driven legal tools. This role is well-suited for engineers who are eager to navigate between in-depth platform architecture and hands-on product development.This position is based in Toronto, Canada, and follows a hybrid work model requiring in-person attendance for 3+ days per week, with relocation assistance available for new hires.

At XYZ Storage, we redefine the storage experience. With a legacy spanning 28 years, we've crafted a unique and iconic brand that resonates with our customers, offering them peace of mind during what can often be a stressful time. Our mission is to simplify moving and storage, making it accessible and secure for everyone.We are excited to invite a talented Senior Full Stack Engineer to join our dynamic team. This role will allow you to contribute to impactful systems that support a rapidly expanding platform, serving tens of thousands of customers.Compensation:$120,000 - $150,000 annuallyExtra Perks:Comprehensive Benefits ProgramFunding for Educational CoursesGenerous Paid Personal DaysAnnual Performance BonusMilestone Recognition AwardsRRSP Program with Matching ContributionsMentoring and Career Development OpportunitiesPaid Training ProgramsSpecial Birthday RecognitionOur team at XYZ Storage is comprised of passionate professionals dedicated to providing seamless storage solutions while supporting our customers through critical life transitions. We cultivate a collaborative and innovative atmosphere, encouraging team members to grow, tackle challenges, and share valuable insights. Together, we are committed to: Delivering an unparalleled storage experience for our customers.As a Senior Full Stack Engineer, you will be instrumental in developing and maintaining the systems that drive our digital platform and enhance the customer experience.About You:You are a seasoned engineer who thrives on solving intricate technical problems and building scalable, reliable systems. Your pride in writing clean, production-ready code is matched only by your commitment to maintaining systems that support vital business operations.You excel in backend services, APIs, and infrastructure, and enjoy collaborating with both technical and non-technical teams to transform innovative ideas into actionable solutions.

Veeva Systems is a forward-thinking, mission-driven organization that is at the forefront of industry cloud solutions, dedicated to accelerating the delivery of therapies to patients in the life sciences sector. As one of the fastest-growing SaaS companies in history, we achieved over $2 billion in revenue last fiscal year and are poised for further significant growth.Our core values at Veeva—Do the Right Thing, Customer Success, Employee Success, and Speed—define our approach to business. We made history in 2021 by becoming a public benefit corporation (PBC), which means we are legally committed to balancing the interests of our customers, employees, community, and investors.As a Work Anywhere company, we offer the flexibility to work from home or in our office, allowing you to excel in an environment that suits you best.Join us in transforming the life sciences industry, as we strive to make a meaningful impact on our customers, employees, and communities.

We are seeking a talented Full-Stack Engineer to join our dynamic team at Merge API Integration Sandbox. In this role, you will leverage your expertise in both front-end and back-end development to create innovative solutions that enhance our platform's capabilities.As a Full-Stack Engineer, you will collaborate closely with cross-functional teams to design and implement user-friendly applications, ensuring the highest performance and responsiveness to requests from the front-end.