TypeScript Jobs

Mistral AI

Mistral AI is seeking early-career software engineers, including new graduates or those with up to 1-2 years of experience, to join their software engineering teams. In this role, you will contribute to building and enhancing the core systems that power Mistral's products, such as AI Studio and Applications, as well as supporting operations like SRE, data, and security. You will play a key part in shaping how users and developers interact with the AI platform at scale, working closely with experienced engineers who will mentor and support your growth. This is an opportunity for enthusiastic graduates to learn, collaborate, and deliver impactful products in a fast-paced environment.

Perplexity is looking for a hands-on Software Engineer to develop and enhance the software, automations, and systems that support our security operations. This role involves engineering security tools and internal AI-driven agents to improve detection, response, vulnerability management, and the overall security posture of our products and infrastructure.

Mistral AI

Mistral AI is seeking an Applied AI Engineer to facilitate the adoption of its products among customers and collaborate with them to address complex technical challenges. This role is integral to the Applied AI Engineering team, driving the successful deployment of Mistral AI products by working hand-in-hand with customers from pre-sale to post-implementation. The engineer will integrate cutting-edge AI models into clients' software products and develop complex use cases, ensuring seamless integration with front-end and back-end interfaces. They will also collaborate with product and science teams to improve product and model capabilities based on customer feedback.

Replit

Replit is seeking a Design Engineer to bridge the gap between design and engineering. In this role, you will help shape our design system implementation, architect front-end solutions, and ensure seamless user experiences across our platform. You will be instrumental in creating the technical foundation that allows us to enable anyone with an idea to create apps.

You will be instrumental in building the core AI features that power Gamma's content creation experience. This involves designing and implementing full-stack features that leverage LLMs and image generation models, creating AI workflows that are both intuitive and engaging for users, and exploring the integration of the latest AI models into our product. You will work across the entire technology stack, from prompt engineering to frontend integration, influencing how millions of users utilize AI for creating presentations, documents, and websites. Collaboration with product, design, and engineering teams will be key to transforming AI capabilities into polished and delightful user experiences.

$180k - $310k

You will own the core AI systems that power Gamma, focusing on productizing existing foundation models rather than training new ones. This involves optimizing models through prompting, evaluation, and fine-tuning for maximum performance across Gamma's product surface. You will also be responsible for launching new modalities like voice and video, building evaluation infrastructure, and managing uptime, latency, and cost across the AI stack. The role requires close collaboration with engineering and product teams to deliver improvements that impact millions of users. This position is ideal for individuals who enjoy pushing foundation models to their limits and are comfortable with both prompt engineering and production code development, blending these skills to unlock new AI capabilities.

$180k - $300k

Cognition is seeking an Applied AI Engineer to operationalize AI modernization at the enterprise level, focusing on deploying and integrating AI agents like Devin into engineering workflows. This role involves embedding with customer teams to drive adoption, architecting agentic workflows, and leading interactive programs to demonstrate value and accelerate AI fluency. The ideal candidate will have strong engineering fundamentals, enjoy customer interaction, and be driven by user success and systematic scaling of learnings. As one of the first Applied AI Engineers, you will also play a key role in shaping the function by developing repeatable playbooks and enablement models.

Mercor is seeking a strong engineer to build scalable agentic products. You will work on a variety of teams focused on automating operational work, developing evaluation systems for RL environments, and building the infrastructure for producing frontier data. This role involves end-to-end ownership of agentic features, from initial scoping and design through implementation, launch, and iteration. You will collaborate with researchers, operators, and AI companies at the forefront of AI advancement, contributing to the development of systems that are redefining society.

Mistral AI

Mistral AI is seeking a Software Engineer to design and build core systems that drive the company's growth, focusing on the Enterprise Agents area. This role involves developing internal tools, integrations, connectors, workflows, and dashboards to enhance information flow across the organization. The engineer will collaborate closely with internal stakeholders to understand business needs, translate complex workflows into scalable software, and deliver pragmatic solutions that optimize team operations. The position is at the intersection of engineering, finance, data, and operations, contributing to a dynamic and collaborative team environment.

Sierra is building a platform to enable companies worldwide to create better, more human customer experiences with AI. We are a primarily in-person company based in San Francisco, with growing international offices. Our mission is to revolutionize consumer and business interaction by empowering every business to build a world-class AI agent that fully represents its identity and brand. This role will focus on bringing enterprise-grade AI Agents to the world, solving complex customer needs, and innovating at the forefront of AI.

Harvey

Harvey is transforming how legal and professional services operate by combining frontier agentic AI, an enterprise-grade platform, and deep domain expertise. This is a rare chance to help build a generational company at a true inflection point, with strong product-market fit and world-class investor support. The team moves fast, takes ownership, and is deeply committed to the mission, operating with intensity and pushing for excellence. As a Staff Software Engineer, Frontend, you will own and lead engineering projects that define the user experience of our different products, including Assistant, Vault, Workflows, and Harvey in Microsoft Word and Outlook, as well as lead frontend engineering on new products.

$238k - $290k

We are seeking experienced engineers to build developer tools that users love. The ideal candidate will have a proven track record of creating intuitive and productive interfaces for developers. This role involves a strong focus on developer ergonomics and productivity, requiring a deep understanding of advanced Python features, particularly async programming. You will work closely with users to solve their problems and contribute to a high-impact infrastructure layer for AI. This position also includes participation in an on-call rotation to address production incidents.

Sierra is building a platform to enable companies to create better, more human customer experiences with AI. We are seeking a Product Manager to join our team and focus on developing enterprise-grade AI Agents. In this role, you will partner directly with engineers and customers to build and ship AI agents capable of handling thousands of customer conversations daily. You will engage with customers at all levels to understand their requirements, demonstrate Sierra's agent capabilities, and address technical challenges by collaborating with technical counterparts. A key part of this role involves shaping the product roadmap by working with engineering and product development teams to scope and implement new features that drive customer success.

Sierra is building a platform to enable companies worldwide to create better, more human customer experiences with AI. We are seeking a Product Manager to join our team and focus on developing Enterprise-grade AI Agents. This role involves partnering directly with engineers and customers to build and ship AI agents capable of handling thousands of daily customer conversations. You will engage with customers at all levels to understand their requirements, demonstrate Sierra's agent capabilities, and address technical challenges. A key part of this role is shaping the product roadmap by collaborating with engineering and product development teams to implement new features that drive customer success.

Sierra is building a platform to enable companies to create better, more human customer experiences with AI. As an Agent PM, you will partner directly with engineers and customers to build and ship AI agents capable of handling thousands of customer conversations daily. This role involves engaging with customers at all levels to understand their requirements, demonstrate Sierra's agent capabilities, and address technical challenges. You will also develop and improve virtual agents to meet customer needs and drive strategic technical initiatives for clients, while shaping the product roadmap by collaborating with engineering and product development teams on new features.

Sierra is building a platform to enable companies worldwide to create better, more human customer experiences with AI. We partner with industry leaders and are primarily an in-person company based in San Francisco, with growing international offices. Our co-founders have extensive experience from leading tech companies like Salesforce, Facebook, and Google, with one co-founder currently serving as Board Chair of OpenAI. We are guided by core values of Trust, Customer Obsession, Craftsmanship, Intensity, and Family, which shape our culture and actions.

Sierra is building a platform to enable companies worldwide to create better, more human customer experiences with AI. We partner with industry leaders and are primarily an in-person company based in San Francisco, with growing international offices. Our co-founders have extensive experience from leading tech companies like Salesforce, Facebook, and Google, with one co-founder currently serving as Board Chair of OpenAI. We are guided by core values of Trust, Customer Obsession, Craftsmanship, Intensity, and Family, which shape our culture and actions.

Sierra is building a platform to enable companies worldwide to create better, more human customer experiences with AI. We partner with industry leaders and are primarily an in-person company based in San Francisco, with growing international offices. Our co-founders have extensive experience from leading tech companies like Salesforce, Facebook, and Google, with one co-founder currently serving as Board Chair of OpenAI. We are guided by core values of Trust, Customer Obsession, Craftsmanship, Intensity, and Family, which shape our culture and actions.

LangChain is seeking a Fullstack Engineer to join the LangSmith team, focusing on our commercial AI observability and evaluation platform. In this role, you will build new features and functionality, collaborating closely with enterprise customers, developer end-users, and internal stakeholders. You will have the opportunity to shape the product and contribute to making intelligent agents ubiquitous.

$145k - $180k

Harvey

Why Harvey At Harvey, we’re transforming how legal and professional services operate. By combining frontier agentic AI, an enterprise-grade platform, and deep domain expertise, we’re reshaping how critical knowledge work gets done for decades to come. This is a rare chance to help build a generational company at a true inflection point. With 1500+ customers in 60+ countries, strong product-market fit, and world-class investor support, we’re scaling fast and defining a new category in real time. The work is ambitious, the bar is high, and the opportunity for growth — personal, professional, and financial — is unmatched. Our team moves fast, takes ownership, and is deeply committed to the mission — operating with intensity, staying close to our customers, and pushing each other for excellence. We live by three values: Decisiveness, Simplicity, and Job's Not Finished. We act quickly on clear judgment over perfect information, we believe simplicity is what scales, and we're never satisfied with where we are. If you want to do the best work of your career alongside people who share that drive, we'd love to build with you. At Harvey, the future of professional services is being written today — and we’re just getting started. Role Overview As a Staff Frontend Software Engineer at Harvey, you’ll play a pivotal role in shaping the foundation of our product platform while directly building user-facing features for some of the world’s leading law firms and enterprise customers. This team owns and operates the platform layer that enables secure, reliable, and flexible experiences for our customers including notifications, permissions and feature flag infrastructure. We also build enterprise-grade collaboration product experiences for law firms. You will design and own systems that not only serve as critical infrastructure for the rest of the company, but also directly impact how our users engage with Harvey’s AI-powered legal tools. This role is ideal for engineers who are excited by the opportunity to move between deep platform thinking and hands-on product iteration. This role is based in Toronto, Canada. We use a hybrid, 3+ days-per week in-person work model and offer relocation assistance to new employees. What You’ll Do - Design and build foundational infrastructure including authentication, permissions, feature flagging, notifications, and document management integrations - Build and evolve Harvey’s internal product platform, accelerating development across multiple product lines and engineering teams - Lead development of enterprise-facing features, such as secure multi-party collaboration, cross-organization workflows, and robust admin controls - Maintain high standards for security, privacy, and system reliability, particularly in handling sensitive legal data - Collaborate cross-functionally with product, AI, design, and GTM teams to deliver delightful, enterprise-ready experiences What You Have - 5+ years (post-BS/MS) of frontend-focused software engineering experience on platform and/or product-oriented teams - Experience working across the stack to ship user-facing features with measurable impact - Strong knowledge of frontend technologies such as React, Typescript, and CSS - Familiarity with or interest in enterprise SaaS patterns, such as role-based access control (RBAC), feature flag systems, and third-party integrations - Track record of shipping highly intuitive products, strong attention to detail - Strong programming skills and general Computer Science knowledge What We Offer - Be part of building something special as a founding member of our Toronto team - Structured hybrid working arrangement: 3 days in our Toronto office, 2 days working from home We are an AI company and we use AI to improve all of our processes, including in the recruitment process. Whilst we do use AI to help improve efficiency in our recruitment process, we do not rely on AI to make any automated decisions and ensure that a human reviews AI output. Depending on your location, an Applicant Privacy Notice may apply to you. You can find all of our Applicant Privacy Notices [here]. #LI-KT1 Harvey is an equal opportunity employer and does not discriminate on the basis of race, gender, sexual orientation, gender identity/expression, national origin, disability, age, genetic information, veteran status, marital status, pregnancy or related condition, or any other basis protected by law. We are committed to providing reasonable accommodations to applicants with disabilities, and requests can be made by emailing [email protected]

CA$197k - CA$271k