Fullstack Software Engineer at Sciforium | San Francisco

Join Sciforium, a pioneering AI infrastructure company, as we develop state-of-the-art multimodal AI models along with our proprietary, high-efficiency serving platform. With substantial multi-million-dollar funding and direct support from AMD engineers, our dynamic team is rapidly expanding to build the complete stack that powers cutting-edge AI models and …

Join OneCrew as a passionate and skilled Fullstack Software Engineer. In this dynamic role, you will collaborate closely with our co-founders and engineering team to shape and enhance our product and platform as we expand our customer base.Location: This position is located in San Francisco, with an expectation of in-office work at our FiDi office for at least 3 days a week.Your RoleYour main focus will be to create dependable, high-performance systems and features that empower paving contractors to run their businesses with efficiency and confidence.Design, develop, and deploy innovative products and features—including AI-driven automation—that transform how contractors estimate jobs, manage teams, and monitor profitability in real-time.Implement AI-enhanced functionalities that redefine industry standards, offering intelligent estimating, predictive crew optimization, and automated insights that facilitate quicker decision-making for contractors.Take charge of system reliability and performance, ensuring our platform is secure, observable, automated, and scalable to support our growth.Collaborate across engineering, product, and design teams to turn innovative ideas into elegant, user-friendly solutions.Continuously improve our technical standards and processes—from testing and deployment to documentation and code reviews—to enhance our development workflow.Foster a culture of craftsmanship and teamwork, contributing to the growth and learning of our team.Your ProfileYou are a high achiever who sets and maintains rigorous standards for yourself and your peers.You excel in collaborative problem-solving, adept at managing multiple priorities.You pursue simplicity and elegance in your solutions, knowing when to invest time and when to prioritize agility.You balance hands-on involvement with empowering your team to succeed.Qualifications3-6+ years of software engineering experience in a fast-paced environment.Familiarity with the NodeJS, React, AWS, and PostgreSQL tech stack is a plus.Authorization to work in the US is required.What We ProvideA collaborative and innovative work environment.

Join our innovative team at AfterQuery as a pivotal Fullstack Software Engineer, playing a crucial role in developing data infrastructure that will influence the next generation of frontier models. As one of our first hires, you will take on significant responsibilities, managing projects from inception to completion, allowing you to witness the immediate impact of your work.About AfterQueryAfterQuery is a cutting-edge research lab dedicated to exploring the frontiers of artificial intelligence through innovative datasets and experimental approaches. We serve top-tier foundation model labs and leading AI research facilities.Located in San Francisco, CA, we have secured funding from prestigious investors, including Y Combinator and BoxGroup, along with notable figures from Google DeepMind and Meta GenAI, among others.Our founding team comprises experts from renowned organizations such as Jane Street, Meta, Citadel Securities, Google, Goldman Sachs, and Stanford's AI laboratories.Why You Should ApplyExceptional Growth Potential: As one of the fastest-growing companies from Y Combinator, we aim to redefine industry standards.Founding Position: You will have the opportunity to shape our data infrastructure from the ground up.Equity and Advancement: Competitive salary and equity options, with opportunities to lead and develop an engineering team as we expand.Collaborative Environment: Work alongside a talented founding team with expertise from top firms.Your ResponsibilitiesDesign and scale intricate data capturing workflows across web technologies (Next.js) and desktop applications (Python).Develop and optimize robust data pipelines capable of handling high throughput and significant data loads.Collaborate with the founding team to outline product strategy and deliver features rapidly.Establish engineering best practices and set the foundation for future team expansion.QualificationsStrong proficiency in JavaScript (Next.js) and Python, with proven experience in developing full-stack web applications.Familiarity with serverless architecture and cloud functions for extensive data processing (GCP/AWS).Hands-on experience with storage solutions, caching (Redis), and search capabilities (Elasticsearch).

About Ivo Ivo, Inc. builds legal technology tools that help legal teams work smarter. Based in San Francisco, our engineering group has shipped several impactful solutions in recent years: An AI agent integrated with MS Word for streamlined document editing (2023) Migration from traditional embedding models to agentic RAG for better performance (2023) Large-scale legal fact extraction using LLMs (2024) A legal assistant that searches vast contract databases while maintaining accuracy (2024) Clustering legal documents by familial lineage (2025) Automated deviation analysis to surface hidden risks in large contract sets (2025) Composite contract creation by merging contracts and amendments (2025) Role Overview The Fullstack Software Engineer will help design, build, and launch our generative AI products. This role involves both frontend and backend development, with a focus on scalable systems and user-facing features. What You Will Do Develop full stack features for generative AI applications Deliver UI components and backend systems that process millions of contracts efficiently Build pipelines integrating LLMs, data extraction, and clustering algorithms at scale Work closely with designers, legal experts, and other engineers to modernize legal workflows Our Mission Legal teams in large companies often face overwhelming workloads, sometimes working 80-hour weeks. Technology has not always provided relief. At Ivo, we use LLMs to help lawyers reclaim their time. The goal: an AI-native platform that automates the most tedious legal tasks. Our software is widely adopted and has achieved an 85% trial win rate, even in a competitive market. We are committed to making a real difference for our users. Who Thrives Here Engineers who enjoy coding and want to make a tangible impact in tech Location: San Francisco

About the RoleAt Hex Technologies, we are pioneering the integration of AI to transform how business users engage with data, facilitating profound data exploration through natural language interactions. Our dedicated team of fullstack engineers is tasked with developing essential workflows that empower our customers to monitor and govern AI agents, ensuring users receive consistently accurate, trustworthy, and truthful responses. You will influence the overall user experience at Hex across the entire tech stack.We envision being the central hub for AI agents within the contemporary data ecosystem, bridging AI engineering, workflow design, and data modeling to adapt to an ever-evolving landscape.What You Will DoAs a Fullstack Software Engineer, you will navigate the entire stack, from sophisticated user-facing interfaces and browser-based IDEs to backend language parsers and SQL generation.Key responsibilities include:Developing observability tools that provide data teams with critical oversight and visibility into agent performance, usage metrics, and conversational audit trails for AI-driven insights.Designing and implementing AI context systems, managing frameworks for a variety of inputs including free-form rules, certified SQL queries, and deterministic semantic models.Creating robust, full-stack workflows that enable data teams to efficiently govern, debug, and curate the Hex agent’s knowledge, thereby ensuring the reliability and trustworthiness of AI-generated responses across the organization.Addressing complex back-end challenges associated with SQL compilation, semantic model development, and serialization of database context to guarantee deterministic and accurate AI outputs.Resolving intricate front-end UX challenges to present extensive technical information in an actionable, clear, and user-friendly interface.

Join Atomic SemiAt Atomic Semi, we are on a mission to revolutionize the semiconductor industry by creating an agile, state-of-the-art semiconductor fabrication facility.Harnessing the power of modern technology and innovative simplifications, we are dedicated to building our own tools for rapid iteration and enhancement.Our dynamic and collaborative team consists of top-notch engineers specializing in various domains such as mechanical, electrical, hardware, and computer engineering. We embrace the philosophy that we can manage everything from atomic elements to architectural designs.With a focus on quality and speed, we believe that smaller and faster is always better. We are committed to inventing solutions that meet our unique requirements, using a range of advanced technologies including 3D printers, sophisticated microscopes, e-beam writers, and a full spectrum of fabrication equipment.Founded by industry visionaries Sam Zeloof and Jim Keller, we are driven by a passion for innovation and excellence.Role OverviewAs a Fullstack Software Engineer, you will play a crucial role in developing our primary web application that operates the fab. Your focus will be on creating user-friendly features that empower process engineers to seamlessly interact with hardware, workflows, and data.

About WorkWhileWorkWhile is dedicated to transforming the way hourly workers earn a living and improve their quality of life. With over 80 million Americans in hourly jobs facing unpredictable schedules, low wages, and limited benefits, we aim to provide financial stability through innovation.Our mission is to revolutionize frontline work by fostering a more flexible and efficient labor market. Utilizing AI technology, our platform enables businesses to swiftly connect with top-tier talent while offering workers same-day pay, complimentary telehealth services, opportunities for skill enhancement, and the freedom to select shifts that suit their skills and availability.With an ambitious goal to align incentives and address inefficiencies in the labor market, we are disrupting the $650 billion staffing and recruiting sector. Supported by Khosla Ventures and recognized by the Inc. 5000 for our remarkable growth, WorkWhile is reimagining the future of work.

About Nooks.ai:Nooks is revolutionizing the sales landscape with its AI Sales Assistant Platform (ASAP) that streamlines the routine tasks, enabling sales representatives to concentrate on building relationships and closing deals. With our innovative technology, we've empowered thousands of sales professionals to exceed their quotas, saving clients hundreds of thousands of hours while generating significant sales pipelines. Trusted by renowned sales teams at industry leaders like Hubspot, Rippling, and Toast, Nooks has established itself as a vital tool in the sales tech ecosystem.We are a high-achieving team that has successfully secured over $70M in funding from prominent venture capitalists, including Kleiner Perkins, marking their first investment in sales technology in a decade. Our remarkable growth trajectory includes quadrupling our Annual Recurring Revenue (ARR) in the last two years, and we aim to triple it again this year.To learn more, please visit Nooks.ai.About the Role:We are seeking an exceptional Senior Engineer to join our dynamic engineering team. In this pivotal role, you will be at the forefront of leveraging large language models (LLMs) and AI agents to redefine outbound sales strategies and drive pipeline generation. You will have the unique opportunity to enhance our existing products and develop new solutions in collaboration with our clients. As a senior team member, you will work alongside engineering leadership to influence our technical and product vision. If you thrive in a fast-paced environment and are excited about shaping a groundbreaking sales product, we would love to connect with you.Responsibilities:Develop and maintain robust, scalable applications across the entire technology stack.Lead the architecture and implementation of new features for our core platform.Collaborate with product managers, designers, and other engineering teams to create impactful solutions.Design and build frontend components using React and TypeScript.Develop backend services and APIs with Node.js and Python.Provide mentorship to junior engineers, guiding them on best practices, coding standards, and architecture.Oversee the complete delivery of features from ideation through to production.Continuously enhance application performance, scalability, and reliability.Contribute to the establishment of our technical roadmap and set standards for engineering excellence.

About WorkWhileAt WorkWhile, we are dedicated to transforming the way people work, ensuring that every worker has the opportunity to earn a better living. With over 80 million Americans in hourly jobs often facing unstable schedules and minimal benefits, we aim to create a more equitable labor market.Our innovative platform harnesses the power of AI to connect businesses with high-quality talent quickly, while empowering workers with same-day pay, free telehealth services, and the flexibility to choose shifts that align with their skills and availability.With the ambitious goal of addressing inefficiencies in the $650 billion staffing and recruiting industry, WorkWhile, supported by Khosla Ventures and recognized on the Inc. 5000 list for remarkable growth, is paving the way for the future of work.Your RoleWork collaboratively with our leadership and cross-functional teams to develop impactful end-to-end product features.Lead projects from initial design through to implementation, delivery, and continuous improvement.Shape our technical systems, internal tools, and engineering practices as the team grows.Balance speed and quality, making informed decisions that prioritize long-term sustainability.Mentor and support team members, fostering a collaborative and inclusive engineering culture.QualificationsProven expertise in either Frontend (JavaScript, React/React Native) or Backend (Python), with the ability to operate effectively across the entire stack.Experience leading projects or having ownership of product areas from start to finish.Strong product intuition with the capability to translate user needs into actionable technical solutions.Effective communicator with a collaborative approach across various disciplines.A commitment to nurturing both systems and individuals in a mission-focused environment.Engineering Culture at WorkWhileJoin a dynamic team of senior engineers from notable companies like Rippling, Stripe, DoorDash, and Faire.We prioritize user-centricity, excellence, speed, and enjoyment in our work.We embrace independence, taking ownership of our projects while thriving in a team-oriented environment.

Padlet is on a mission to revolutionize education through innovative software solutions that foster curiosity, creativity, and community. Our platform empowers millions of classrooms globally, facilitating visual content creation and collaboration.We believe that exceptional software must excel in every important aspect. Just like the Dyson vacuum cleaner, which is not only effective but also aesthetically pleasing, easy to handle, and portable, we are in search of Fullstack Engineers who can craft outstanding software products for a billion users.

Join Us at LangChain:At LangChain, we are committed to revolutionizing the world of intelligent agents. Our mission is to empower developers to transition their innovative prototypes into production-ready AI agents that organizations can depend on. Starting as a suite of widely used open-source tools, we have expanded to provide a comprehensive platform for creating, assessing, deploying, and managing agents at scale.Our cutting-edge solutions, including LangChain, LangGraph, LangSmith, and Agent Builder, are trusted by teams delivering real AI products, from startups to major corporations. With millions of developers utilizing LangChain, we proudly support organizations like Replit, Clay, Coinbase, Workday, Lyft, Cloudflare, Harvey, Rippling, Vanta, and 35% of the Fortune 500.Having raised $125 million in Series B funding from esteemed investors such as IVP, Sequoia, Benchmark, CapitalG, and Sapphire Ventures, we are poised for accelerated growth and innovation, allowing every team member to significantly impact our projects and collaborative processes. At LangChain, your input will help shape the real-world impact of this transformative technology.About the Role:We are seeking a passionate Education Engineer to facilitate the learning journey for developers and agent builders using LangChain, LangGraph, and LangSmith. In this dynamic role, you will transform cutting-edge applied AI research into engaging educational experiences, ranging from hands-on workshops and meetups to comprehensive online courses and recorded video tutorials.You will collaborate with our Applied AI and software engineering teams to design high-quality learning materials that elucidate essential concepts in Agentic AI, provide real-world applications, and empower external developers to effectively utilize our tools. This hybrid position marries technical expertise in software development with a commitment to education, community engagement, and effective communication.Your responsibilities will include:Collaborating with LangChain engineers to create educational content that introduces generative AI and agent-building principles utilizing LangChain, LangGraph, and LangSmith.Designing curriculums and learning pathways for our vibrant community of over 1 million developers and agent builders.Producing and delivering content in various formats:Online courses for LangChain Academy, video tutorials, and webinarsLive presentations at workshops, hackathons, meetups, and conferencesMaintaining and updating educational resources to reflect the latest advancements in AI technologies.

P-925 At Databricks, we are dedicated to empowering data teams to tackle some of the world's most challenging issues—from realizing the next mode of transportation to accelerating groundbreaking medical advancements. Our mission is to construct and operate the world’s premier data and AI infrastructure platform, enabling our customers to leverage deep data insights for business enhancement. Founded by engineers and driven by customer obsession, we eagerly embrace every opportunity to confront technical challenges, from designing next-generation UI/UX for data interaction to scaling our services and infrastructure across millions of virtual machines. And we’re just getting started. As a Staff Fullstack Engineer, you'll collaborate with your team and product management to simplify the extraction of insights from data. We seek engineers who are customer-focused and who can take ownership of the entire product and user experience beyond mere technical implementation. You will lay the groundwork for the creation of robust, scalable, and delightful products. Here are some of the impactful experiences you will develop for our customers, guiding them through the complete project lifecycle—from data loading and results visualization to statistical model creation and production deployment: Streamlined workflows for creating, configuring, and managing large-scale compute clusters, networks, and data sources. Design, deploy, test, and enhance complex data pipelines featuring powerful data visualization capabilities. Facilitated onboarding and management processes that empower all organization members to become data-driven. Deliver an exceptional SQL-centric data exploration and dashboarding experience on Databricks. An interactive environment for collaborative data projects at a massive scale, with a clear pathway to production.

Complete is dedicated to transforming compensation into a strategic advantage for the most impactful companies globally. We're revolutionizing compensation processes by moving away from outdated spreadsheets to modern, efficient systems. Our solutions encompass comprehensive compensation cycle planning, leveling, total rewards statements for employees, and interactive candidate offers, among other features!Why Join Us at Complete?We understand that effective compensation strategies are vital to a company's success and represent one of its largest expenditures. Many enterprises struggle to develop and implement a solid compensation strategy, which can lead to significant financial and operational inefficiencies. We believe that innovative compensation approaches are the key to sustainable success.Complete is proudly supported by Accel and Y Combinator, and we are fortunate to have esteemed advisors like Will Larson (CTO of Carta), Eric Sagar (COO of Plaid), and Mathilde Collin (CEO of Front).About Our Team We are passionate builders focused on delivering quality. We believe that 21st-century software should be intuitive and require minimal training. Our culture is characterized by low ego and rapid execution. Success doesn't come from large teams but from focused efforts. Our tight-knit team of fewer than 10 people combines exceptional product and business expertise, allowing us to compete effectively in the market. This is your opportunity to join us at a pivotal moment!⭐ Our clientele ranges from innovative startups like Linear and Brex to established public companies like Roblox, and we are continually adding remarkable names to our roster. We thrive in a collaborative environment at our San Francisco office, located near Embarcadero BART, where we work together in person 4-5 days a week. We believe that bringing top talent together in a creative space is the fastest route to success.Your RoleAt this exciting juncture, we are seeking Senior or Staff Engineers to help us scale towards $XXM+ in ARR. Ideal candidates are those who are proactive, enjoy working with urgency, and have a strong focus on customer outcomes. You will have the opportunity to make significant contributions in three key areas:Ownership: We are looking for experienced individuals who can take charge of projects and drive them to successful completion.

About WorkWhileAt WorkWhile, we are dedicated to transforming the lives of hourly workers by providing them with opportunities for better earnings and improved living standards. With over 80 million Americans engaged in hourly employment, the unpredictability of their schedules and minimal benefits often leads to financial uncertainty.Our mission is to revolutionize frontline work by fostering a flexible and efficient labor market. Leveraging AI technology, the WorkWhile platform allows businesses to swiftly connect with top-tier talent, while workers enjoy benefits such as same-day pay, complimentary telehealth services, professional development, and the freedom to select shifts that align with their skills and schedules.With the bold ambition to align interests and eliminate inefficiencies in the labor market, we are poised to disrupt a $650 billion staffing and recruiting industry. Supported by Khosla Ventures and recognized by Inc. 5000 for our remarkable growth, WorkWhile is setting the stage for the future of work.

About UsAt 3Y Health, we are pioneering AI-driven software solutions to empower healthcare providers and streamline the staggering administrative complexity that consumes 40% of the industry’s revenue. Our comprehensive platform unveils opportunities for clinician entrepreneurs, enabling medical professionals to successfully launch, operate, and expand private practices. By equipping these independent practices with cutting-edge AI and automation, we’re assisting providers in reclaiming their time, nurturing successful businesses, and delivering enhanced outcomes for their communities. Backed by over $200M from esteemed investors such as Founders Fund, General Catalyst, Softbank, and 8VC, we are on a mission to revolutionize healthcare.About the RoleWe are in search of a skilled Fullstack Engineer to help us develop intuitive and high-performance user interfaces that resonate with our providers. The ideal candidate will be a product-oriented engineer with extensive expertise in modern web technologies (React, TypeScript, Node) and a keen eye for design and user interaction excellence. You have a passion for writing clean, modular code and can collaborate effectively with design and product teams to bring beautiful experiences to fruition. Candidates with experience as a founding engineer or founder are especially desirable, as we value a strong sense of ownership, speed, and a commitment to continuous iteration.This position requires a dynamic individual capable of steering architectural decisions and collaborating cross-functionally with engineering, design, and product teams. As a Fullstack Engineer, you will play a key role in delivering scalable systems, collaborating on product development, and shaping the user experience of our practice management platform.ResponsibilitiesDevelop and maintain reusable, high-performing, and accessible frontend components utilizing React and TypeScript.Collaborate closely with designers to create stunning, user-focused experiences.Own the UX refinement and interaction quality; consistently seek opportunities to enhance usability.Partner with backend engineers to define API interfaces, and occasionally implement backend logic as necessary.Shape frontend architectural decisions and advocate for best practices in code modularity and maintainability.Engage in code reviews, technical discussions, and team rituals.Adopt a founder’s mindset—be proactive, product-focused, and eager to take ownership.

About SprigSprig is revolutionizing experience research with its AI-driven successor to traditional survey tools such as Qualtrics, Medallia, and SurveyMonkey. We envision a future where experience research is efficient, smart, and seamlessly integrated into the product development process.Our mission is to simplify deep customer understanding, making it continuously accessible. With Sprig, product teams transition from guesswork to clear insights, utilizing AI to unveil critical data, streamline workflows, and empower teams to deliver outstanding customer experiences in real-time.Renowned companies like Notion, Figma, Coinbase, and TripAdvisor leverage Sprig to foster deeper customer relationships. We are rapidly scaling towards $100M ARR, introducing innovative AI-driven features, and broadening our influence among the world’s leading companies.If you thrive on ambitious concepts, fast-paced growth, and the chance to reshape an entire industry, we invite you to connect with us.About the RoleAs part of Sprig's mission, we are assembling a top-tier product experience platform that empowers leading businesses to gain comprehensive insights into user interactions with their products at scale. The Core team is responsible for the complete experience of developing studies and deploying them across client applications using an installable client-side SDK.Our fullstack engineers play a crucial role in designing and implementing features across a JavaScript SDK client, managing APIs that handle thousands of requests per second, and creating an intuitive user interface for study creation. You will oversee web application releases and SDK versions across multiple platforms, prioritizing an optimal developer experience for thousands of developers utilizing our tools.Your contributions will reach millions of users globally.This position is based in San Francisco, requiring three days of in-office work.

Join Influencer Marketing's FutureAt influur, we are pioneering the world's first autonomous AI agent tailored for influencer marketing, designed to transform the way campaigns are developed and executed.This is not just another tool or platform; our agent seamlessly transitions from campaign conception to execution, connecting with 50 influencers within a week—all with minimal human oversight.Why We Matter: With three years of exclusive data on viral influencer content, we are trusted by industry giants like Warner, Sony, and Universal to elevate their top artists. Our roster of backers includes notable figures such as Sofia Vergara and Karol G, as well as esteemed venture capitalists like Point72 Ventures. We are committed to delivering production-ready AI that is already generating substantial revenue.What Sets Us Apart: Our unique advantage lies in our dual capability: we possess both extensive data on influencers and direct connections with them. In the realm of AI, this combination creates an insurmountable competitive edge.Timing is Everything: With AGI agents poised to disrupt the workforce by 2027, we have a crucial 12 to 18 months before the market becomes saturated. We are currently defining the category of social media viral agents.Your Opportunity: We seek passionate young professionals who are ready to invest in a transformative journey. We're offering significant equity for those eager to shape the future of AI in influencer marketing and secure a substantial stake in it.

Zyphra is a pioneering artificial intelligence company located in the heart of San Francisco, California, dedicated to pushing the boundaries of technology.The Role:As a Fullstack Engineer, you will play an essential role in advancing Zyphra’s Agentic Systems and Interaction initiatives. You will be at the cutting edge of developing a state-of-the-art desktop and browser-based agent capable of autonomously navigating the web, interacting with file systems, and accomplishing intricate user tasks. Your work will encompass frontend interfaces, secure sandbox environments, large-scale document search and retrieval, and integration of language and vision models. We welcome all candidates to apply, even if they don't meet every requirement.You’ll work across:Designing and implementing diverse agentic system architectures that facilitate interaction with browsers, operating systems, enterprise file systems, and collaboration tools.Creating search and retrieval pipelines for large-scale structured and unstructured data.Developing backend layers for Retrieval-Augmented Generation (RAG) systems and other information context management systems essential for agent operations.Integrating large language models (LLMs), vision models, reinforcement learning, and scaffolding frameworks to enable autonomous, multi-step decision-making.Engineering secure virtualized runtimes and backend services for the execution of agents.Most importantly, your passion for building production-grade software is what we value.We appreciate velocity and curiosity, especially in dynamic and ambiguous settings.Requirements:Strong proficiency in Python with extensive experience in building and debugging complex end-to-end applications.Background in SaaS environments, production workloads, web interfaces, databases, search engines, and queuing systems.Experience in developing browser extensions or automation tools with detailed control over browser interactions (mouse, tabs, DOM).Familiarity with LLMs, prompting techniques, and orchestration frameworks for multi-step reasoning.Capability to work across the entire stack, from web interfaces to control planes and data infrastructure, including queuing systems, databases, and search indexes.Experience in designing or working with secure and virtualized execution environments.A proactive mindset and a strong desire to innovate are essential.

About the RoleAs a pivotal technical founder, you will be responsible for crafting the entire product interface of Known. This includes developing an engaging mobile application, establishing backend systems for seamless matching and communication, and implementing API integrations that simplify the dating experience. You will create features that combine stunning user interfaces, intelligent data workflows, and third-party services to deliver a truly enchanting consumer experience.You will collaborate closely with the founding team, which includes experts in AI/ML, product development, and design, to transform innovative product concepts into functional code. This high-ownership position allows you to design systems, make significant technical choices, and directly influence how millions of users interact with Known.ResponsibilitiesDevelop and launch mobile applications using React Native that are fast, enjoyable, and user-friendly, covering everything from onboarding processes to real-time messaging and match exploration.Create and uphold backend services utilizing Node.js/TypeScript, including RESTful APIs, WebSocket connections for real-time chatting, and WebRTC integrations for audio and video functionalities.Integrate third-party solutions such as OpenAI/Anthropic LLMs, Apple/Google Pay, reservation systems, and SMS/push notifications to provide seamless, automated interactions.Collaborate with AI/ML engineers to present model outputs—like compatibility scores, tailored recommendations, and conversational agents—through intuitive user interfaces and efficient APIs.Manage infrastructure and deployments on contemporary cloud platforms, ensuring reliability, security, and scalability as the user base expands.Implement analytics and monitoring to evaluate user engagement, conversion pathways, and overall product health in real-time.Requirements3–5 years of experience in building production-level fullstack or mobile applications, preferably within consumer products or startup environments.Proficient in TypeScript, React, React Native, and Node.js.Demonstrated experience in designing and optimizing RESTful APIs with a focus on performance, security, and maintainability.Solid understanding of Postgres—comfortable with data modeling, query optimization, indexing, and database performance.Familiarity with cloud platforms (AWS, GCP, Vercel) for hosting and deployment.

Position OverviewJoin Onyx, a leading open-source project with a vibrant community of over 300,000 users, contributing to a platform that has garnered more than 13,000 stars on GitHub. As a Fullstack Engineer, you will have the chance to make a significant impact in a project that has the potential to reach millions globally. Your ContributionAs one of the early team members, you will be instrumental in defining our core product. Help us establish Onyx as the premier “GenAI for work” application worldwide. This role is based in our San Francisco office.Your responsibilities will include:Designing a user-friendly interface for our GenAI Chat, Enterprise Search, Agents, and Admin features.Enhancing backend functionalities and APIs to support our growing needs.Refining the search pipeline for better flexibility and quality, developing a semantic understanding of customer organizations, and improving permission and access controls.Implementing cutting-edge NLP techniques, such as LLM-based Knowledge Graphs and StructRAG, to broaden the system’s question-answering capabilities (AI/deep learning experience is not mandatory).Taking ownership of the entire development lifecycle of new features, from ideation to deployment.Collaborating closely with founders and the team to influence product direction and contribute to our engineering strategy. Success Factors1-5 years of practical software engineering experience in developing real-world applications.Proficiency in Typescript, React, NextJS, Python, and relational databases (Postgres).A passion for working in a dynamic startup environment with minimal processes.Strong communication skills and the ability to work collaboratively with both teammates and external stakeholders.⭐ Additional AdvantagesFamiliarity with Docker, Kubernetes, cloud platforms (AWS, GCP, Azure), and both on-premise and cloud deployments.An interest or experience in AI technologies (NLP, Deep Learning, GenAI) and information retrieval.Background as a founder or early engineer at a seed or series-A startup.