JavaScript Jobs

Scale AI

Scale's Global Public Sector team is focused on using AI to address critical challenges facing the public sector worldwide. We create custom AI applications impacting millions of citizens, generate high-quality training data for national LLMs, and provide upskilling and advisory services to spread AI's impact. As a DevOps Engineer, you will design and develop core platforms and software systems, supporting orchestration, data abstraction, data pipelines, identity & access management, security tools, and underlying cloud infrastructure. We are enabling the public sector to transform operations and better serve citizens through cutting-edge technology.

Scale AI

Scale GP (Scale Generative AI Platform) is an enterprise-grade Generative AI platform that provides APIs for knowledge retrieval, inference, evaluation, and more. We are looking for a strong engineer to join our team and help us build and scale our product in a fast-paced environment. The ideal candidate will have a strong understanding of software engineering principles and practices, as well as experience with large-scale distributed systems. You will be responsible for owning large new areas within our product, working across backend, frontend, and interacting with LLMs and ML models. You will solve hard engineering problems in scalability and reliability.

Scale AI

This internship focuses on building and deploying AI-powered tools, automating workflows, and implementing agentic systems for use by Scale AI teams. You will be embedded within the Data & Technology organization, collaborating directly with engineers, data scientists, and operations leads on live automation initiatives. The role is ideal for individuals with a strong understanding of current AI capabilities, a preference for hands-on building over theoretical exploration, and proficiency in modern LLM tooling.

$74k - $112k

Scale AI

Our customer base is growing exponentially, and you will be on the front lines of ensuring that the world's most innovative companies become passionate, lifelong, Scale customers. Our Solutions Engineers ensure customers' first experiences with Scale's technology are flawless and lead to a successful long-term partnership. The work will vary daily, and we’re looking for technical experts excited to solve tough problems. As a solution engineer, you will be a part of helping shape our early-stage federal business by re-envisioning our commercial product offerings for our federal clients.

$186k - $233k

Scale AI

We are seeking a Principal Architect to drive the design, development, and deployment of our agentic AI products in a fast-paced, collaborative, extremely high-visibility environment. In this role, you will lead a team of 50+ engineers, providing both strategic and technical guidance. You’ll be responsible for high-impact architectural decisions, cross-company collaboration, and executive level engagements.

$298k - $373k

Scale AI

Scale Generative AI Platform (Scale GP) is an enterprise-grade platform offering APIs for knowledge retrieval, inference, and evaluation. We are seeking a skilled engineer to contribute to building and scaling our product in a dynamic environment. The role involves owning significant product areas, collaborating across backend and frontend development, and integrating with LLMs and ML models. You will tackle complex engineering challenges related to scalability and reliability, working throughout the product lifecycle from concept to production.

$216k - $270k

Scale AI

Scale GP is seeking a Senior or Staff Infrastructure Engineer to lead the engineering of the 'paved road' for knowledge retrieval and inference engines, defining deployment standards for Agentic workflows at scale. This role bridges complex AI orchestration with world-class infrastructure, ensuring platform reliability for enterprise agents. The ideal candidate is passionate about deep technical work, mentoring, and setting long-term technical strategy while maintaining a hands-on delivery focus. You will architect and implement solutions across multiple cloud providers (GCP, Azure, AWS) for customers in regulated industries.

$252k - $315k

Scale AI

Scale GP (Scale Generative AI Platform) is an enterprise-grade AI platform that provides APIs for knowledge retrieval, inference, evaluation, and more. We are looking for a strong engineer to join our team and help us build and scale our core infrastructure in a fast-paced environment. The ideal candidate will have a strong understanding of software engineering principles and practices, as well as experience with large-scale distributed systems. You will implement solutions across multiple cloud providers (GCP, Azure, AWS) for customers in diverse, highly-regulated industries like healthcare, telecom, finance, and retail.

$216k - $270k

Scale AI

Scale's Global Public Sector team is seeking Applied AI Engineers to build custom, end-to-end AI applications for public sector clients worldwide. This role involves leveraging the latest AI advancements to create impactful solutions, generate high-quality training data for national LLMs, and contribute to upskilling initiatives. You will work on developing and fine-tuning sophisticated models for real-world use cases, aiming to transform public sector operations and enhance citizen services through cutting-edge technology. Join a rapidly expanding team dedicated to shaping the future of AI in the public sector.

Replit

Replit is seeking a mid-level AppSec Vulnerability Management Engineer with a strong software development background. This role bridges the gap between security, compliance, and engineering teams by identifying application vulnerabilities, maintaining software supply chain security, and driving tracking to satisfy strict regulatory compliance frameworks. The engineer will also serve as a technical responder during security incidents, deploying real-time countermeasures to protect the software ecosystem.

Mistral AI

Mistral AI is seeking passionate and skilled software engineers to join our Warsaw-based Context Engine team. You will be instrumental in building and enhancing Mistral's agent harness, which is crucial for delivering production-grade knowledge processing and directly influences how users interact with our AI platform. The role involves developing reliable, high-performance backend systems and APIs that serve millions of users and developers, ultimately making the user and developer experience more engaging, efficient, and intuitive. We are looking for engineers at mid to senior staff levels who are eager to learn, collaborate, and ship impactful products.

Replit

Replit is seeking a Product Security Architect to be the subject matter expert for the company's secure product blueprint. This role involves defining and implementing the application security architecture for a multi-tenant SaaS platform, ensuring resilience and security by design. The architect will be a key technical contributor, leading high-impact security initiatives and providing expertise to engineering teams and executive leadership. The position focuses on defining the product security vision, leading security implementation for new features, conducting threat modeling, and enforcing application security best practices.

As a security engineer at WRITER, you will build the foundational security for the AI systems that power major enterprises. You will operate at the intersection of application security, AI infrastructure, and developer enablement, collaborating with engineering teams to integrate security into the development lifecycle. This role involves defining enterprise AI application security, from threat modeling LLM architectures to creating automated security controls. You will address unique challenges in securing AI agents, protecting training data pipelines, and designing controls for novel AI systems, aiming to enable secure innovation rather than hinder it.

WRITER is a leading enterprise AI company focused on expanding human capacity through superintelligence. We provide a platform for companies to build and deploy AI agents grounded in their data and powered by enterprise-grade LLMs. We are a fast-growing, well-funded company looking for talented individuals to join us in creating the future of work with AI. As a Security Engineer, Application Security, you will be instrumental in building the security foundations for our AI systems. You will work at the intersection of application security, AI infrastructure, and developer enablement, ensuring security is integrated into every stage of development. This role offers a unique opportunity to define how enterprise AI applications are secured, tackle novel challenges in securing AI agents and data pipelines, and contribute to a platform that is both powerful and trustworthy.

Scale AI

Scale Generative AI Platform (Scale GP) is seeking a strong engineer to help build and scale an enterprise-grade Generative AI platform. This role involves owning significant new product areas, working across backend, frontend, and integrating with LLMs and ML models. You will tackle complex engineering challenges related to scalability and reliability in a fast-paced environment, delivering high-quality experiments to engage customers throughout the entire product lifecycle.

$252k - $315k

Mistral AI

Mistral is seeking highly motivated Data Quality Specialists to join our Human Data Annotation team. This hybrid role involves reviewing and auditing code annotations against rubrics to ensure high-quality data for AI model training and evaluation. You will also be responsible for building, maintaining, and troubleshooting the internal tooling that annotators use daily. This position offers the opportunity to collaborate closely with annotators, technical program managers, and engineering stakeholders, contributing to the refinement of guidelines and processes that shape data production.

Replit

Replit is seeking a Premium Support Engineer to be the primary point of contact for their highest-value customers, providing expert and timely technical support. This role involves handling complex product issues, guiding customers through critical incidents, and ensuring a high standard of quality and speed in all interactions. The engineer will play a key part in evolving support strategies, adapting to new products and customer expectations, and leveraging AI-assisted workflows. The position requires a blend of deep technical troubleshooting and clear, confident communication to keep users productive.

Google DeepMind

The Gemini App Design team is building the Gemini Universal Assistant, a conversational AI designed to help users worldwide collaborate with generative AI for imagination, curiosity, and productivity. This role is instrumental in developing innovative ways for people to accomplish tasks and enrich their lives, focusing on creating world-leading generative AI experiences. At Google DeepMind, the mission is to unlock state-of-the-art AI capabilities across Alphabet, aiming for positive impact and magical product experiences for billions of users. The Integrated Assistance team specifically focuses on making Gemini a personalized universal assistant integrated across devices and apps, unlocking generative AI experiences through deep OS and app integrations. This team guides users to understand the value of generative AI, including capabilities beyond the full-screen app, and partners with design, research, and modeling teams globally.

Google DeepMind

At Google DeepMind, we aim to unlock state-of-the-art artificial intelligence capabilities across Alphabet, creating positive impact and magical product experiences for billions of users. We are seeking a highly experienced, self-starting, and innovative Staff AI Product Designer focusing on our Growth and Discovery initiatives. As a key member of our team, you will work hand-in-hand with engineers, research scientists, and product managers to design and build intuitive solutions to help people around the world use Google’s best AI models to enrich their lives and realize their potential. You will play a crucial role in shaping the future of how people interact with AI, involved in all aspects of the design process, from conceptualization and ideation to prototyping and implementation in a fast-moving and highly collaborative environment.

Mistral AI

Mistral AI is seeking an AI Deployment Strategist to drive the adoption and deployment of their AI solutions. This role involves working closely with customers from strategic vision to production implementation, sitting at the intersection of business strategy, AI innovation, and hands-on deployment. You will partner with senior executives to design AI roadmaps, collaborate with the Applied AI team to deliver solutions in production, and ensure seamless transitions from presales to postsales, directly contributing to customer success by bridging the gap between strategy and execution. This position is ideal for individuals who thrive in a fast-paced environment, enjoy solving complex business challenges, and are passionate about translating AI potential into real-world impact.