Product Engineer, Agent Development Environment
Letta is seeking a Product Engineer to build, design, and define developer interfaces for their Agent Development Environment, SDKs, and Cloud Platform, focusing on transparency and control in AI agent development. Responsibilities involve working closely with designers and researchers to create visual interfaces for agent functionality and interfacing with the open-source community to improve the developer experience. Strong frontend (React) and full-stack skills are required to build applications that allow developers to deeply understand and interact with advanced AI agents.
Senior Full-Stack Developer - Ltx
The Senior Fullstack Developer will join the LTX team developing a revolutionary generative AI video creation platform. Responsibilities include developing end-to-end features from UI widgets to back-end architecture, and implementing system improvements. The role also requires mentoring junior developers and collaborating with cross-functional teams on web UI and UX.
Senior UI Engineer - Remote (bulgaria)
The role involves joining Mondoo as a Senior UI Engineer to build a high-performance web application for their Agentic Vulnerability Platform using React and TypeScript. Key responsibilities include building responsive frontend features, translating Figma designs into code, implementing micro-interactions with Framer Motion/CSS/MUI, and integrating with GraphQL APIs. Candidates must have 5+ years of frontend experience and proficiency in React, TypeScript, and Material-UI.
Staff Software Engineer
This Staff Software Engineer role involves tackling complex engineering problems across teams using cloud-native tools and a Python modular monolith architecture. Key responsibilities include architecting scalable systems, building prototypes for creative solutions, and owning end-to-end delivery from design to deployment. Candidates must be proficient in Python or Go and experienced in building complex, scaled systems.
Staff Software Engineer
This Staff Software Engineer role involves actively improving Check's systems by solving difficult engineering problems, primarily within a Python modular monolith utilizing cloud-native tools. Key responsibilities include architecting and building scalable systems, prototyping creative solutions, sharing constructive feedback, and coaching team members through transparent collaboration. Candidates should be proficient in Python or Go and experienced in building and scaling complex, regulated systems.
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Software Engineer
The Software Engineer will be responsible for framing and building high-value features and pieces of infrastructure for Dust's AI operating system. This involves engaging with a full-stack environment including technologies like TypeScript, React.js, Node.js, and Rust. Key responsibilities include owning critical features end-to-end, scoping technical projects, collaborating closely with users, and building systems designed for scale.
Product Engineer
Clasp is hiring a founding Product Engineer to help transform the health insurance industry by modernizing and automating the benefits experience. Responsibilities include building the core offering from the ground up, establishing scalable technical foundations, driving product direction, and cultivating partner relationships. This is a ground-floor opportunity requiring 5+ years of system design experience, focusing on shipping software daily while championing user needs.
Staff AI Engineer
The Staff ML Engineer will be responsible for architecting and building Spara’s AI engine that powers intelligent interactions across chat, email, and voice channels. Key duties involve defining quantitative success criteria, running evaluations, and crafting user experiences through prompt engineering and foundation model orchestration. This high-impact role requires deep technical expertise to shape the product roadmap and drive innovation within an early-stage, experienced team.
Software Engineer, University Graduate
The Software Engineer role involves developing crucial product features for the HeyGen platform, working across the stack from frontend to backend APIs and ML models. Key responsibilities include designing, developing, testing, and deploying robust features, while also collaborating closely with design and product teams. Candidates should have a Bachelor's degree and prior internship experience, with familiarity across the listed tech stack.
Senior Software Developer
The Senior Software Developer will be responsible for architecting and developing robust, scalable software solutions across the full stack, as well as enhancing software stability by diagnosing and addressing bugs. Key tasks include participating in on-call rotations, engaging in pull requests for expertise sharing, and systematically mitigating technical debt. The role requires collaboration with the team to learn and grow with emerging technologies.
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Senior JavaScript Engineer (poland, Contract)
The role is for a Senior JavaScript Engineer based in Poland on a 6-month contract, working for a digital and AI engineering consultancy. Key responsibilities include designing and building applications using JavaScript, supporting component design and maintenance, and optimizing application performance. Candidates must be outcome-driven and proficient in English, possessing deep knowledge of the JavaScript language and essential experience with Node.js.
Full-Stack Engineer, Command
The Full Stack Engineer for Command will own the end-to-end product development for Meter's generative UI interface, which allows users to interact with network infrastructure using natural language. Key responsibilities include designing and implementing frontend features using Next.js/React/TypeScript and building/scaling backend services using technologies like Planetscale DB and integrating LLMs into user workflows. This deeply cross-functional role requires shaping the direction of a new kind of intelligent UI by working closely with model, application engineering, and operations teams.
Senior / Staff Frontend Engineer (web & Mobile)
Kindred is seeking a highly experienced Senior/Staff Frontend Engineer to serve as a technology leader for their consumer-facing web (Next.js) and mobile (React Native) applications. Key responsibilities include architecting, building, and scaling features across platforms, contributing to tech stack decisions, and establishing engineering growth alongside the co-founders. The ideal candidate must have 5+ years of experience with deep expertise in both React and React Native environments.
Senior Software Engineer
Mesa is seeking a Senior Software Engineer to build and drive innovation in their Card and Mortgage products. Key responsibilities include designing and architecting systems to scale massively, innovating on the mortgage product, and establishing engineering best practices for the early team. This role demands an intense pace, strong ownership, and the ability to thrive in ambiguity while delivering outlier results.
Frontend Engineer
Factory is hiring frontend engineers to build human-AI interaction patterns for their core enterprise platform using modern React and TypeScript. Responsibilities include developing intuitive user interfaces, designing scalable platform features, and innovating novel AI-native human-computer interaction patterns. Candidates need a strong technical background and significant experience building scalable web applications with React.
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Senior / Staff Full-stack Engineer
The Senior Full-Stack Engineer will design, build, and deploy frontend and backend services for Hedra Studio, focusing on web-based video/audio creation tools using emerging standards. Key responsibilities include developing with React/NextJS, building scalable backend services on Kubernetes, and integrating with data/event streaming systems like DynamoDB, SQS, and Kafka.
Intermediate Software Developer
Thanx is seeking an Intermediate Software Developer to architect and develop robust, scalable software solutions across the stack. Key responsibilities include enhancing software stability by diagnosing and addressing root causes of bugs, participating in on-call rotations, and collaborating on pull requests and tech debt mitigation. Candidates should have 3+ years of experience with modern web frameworks and front-end technologies.
Software Engineer, Product Development
As a Software Engineer at ConductorOne, you will build features, interfaces, and systems for the AI-native identity security platform, working across the full stack from backend APIs (Go) to frontend UI (React). Key responsibilities include shipping production-quality code, participating in technical design, and collaborating with Product and Design to turn complex workflows into simple solutions. This is a high-ownership role where you will help shape the evolution of ConductorOne's products as the company scales.
Software Engineer
Zefir is seeking a Software Engineer to develop and deploy high-performance APIs using Node.js/GraphQL and build intuitive frontend applications with React/Next.js. Key responsibilities include owning the full feature lifecycle, writing thoroughly-tested code, and leveraging AI-driven functionalities like RAG and agentic workflows. The role requires an entrepreneurial mindset and fluency in English, offering options for working onsite in Paris or remotely.
Product Engineer
The company is an applied AI lab building end-to-end software agents like Devin and Windsurf. They are seeking experienced engineers excited to push the boundaries of how developers interact with coding agents. Key responsibilities include shipping product, talking to users, breaking through technical walls, and building beautiful, performant developer experiences.