React Jobs

We’re building an AI chat platform where humans and AI interact in group chats, voice, and video. Small team, high ownership, ship fast. Talk to users and build things you actually use. Looking for a fullstack engineer to build product features end-…

Greenhouse is hiring a hands-on Engineering Manager to lead the Data Experience team (7 people) owning the user-facing reporting and analytics product. Role includes leading strategy for customer data visualizations, collaborating with Product and D…

Rainbow is a tech-enabled small-business insurer that underwrites small businesses (starting with restaurants) and evaluates them against various risks to provide insurance policies. Live for 2.5 years and one of the top insurers of restaurants in t…

We build AI-powered agricultural tools through the Claude Partner Network. Team holds CCA certification. Looking for people who want founding equity in a small, remote-first company doing real work at the intersection of agtech and LLMs. Roles: Full…

We’re looking for a Lead Engineer to help shape the future of HostGPO’s platform, data systems, and technical direction. This person will be a senior builder and technical leader who can architect and ship scalable systems, navigate messy real-world…

I3W (Infinity Intelligence Innovation Wing) builds intelligent and scalable products across AI, design, and engineering. Hiring multiple full-time on-site roles in Noida (Sector 62): Web Frontend Engineer, Backend Developer, AI/ML Engineer, Gaming D…

Boutique commercial real estate advisory in NYC hiring one senior full-stack engineer to advance two production web applications (a CRE search platform and a property management platform with QuickBooks integration). Both apps are live with real use…

Turquoise Health is a Series C HealthTech startup, distributed remotely across the USA. They are hiring full-time software engineers for the product engineering team to address the U.S. healthcare revenue cycle. Looking for high-performing full-stac…

Arvo is building an AI meeting assistant for investment banking and private equity. Hiring a Founding Engineer to work closely with the founders across desktop, backend, and AI workflows. High-ownership role with significant influence on product, ar…

We build AI phone agents for US healthcare — insurance claims, benefit verification, scheduling. 300K+ calls/month. Series A closed, R&D fully in Barcelona. Stack: Python, FastAPI, React/TypeScript. Small engineering team, fast pace, real ownership.…

BillionToOne is a molecular diagnostics company in Menlo Park, CA. Their software team builds products to detect prenatal genetic conditions non-invasively and to improve cancer treatment option discovery. They emphasize small teams with high owners…

Colonist is a multiplayer strategy game with millions of players. We're a small team and you'll own features end-to-end, from backend game logic to polished UI. You'll work on evolving our game architecture, ensuring cleaner code boundaries and bett…

Lead the technical execution for a proprietary multi-agent AI platform that operationalizes the company's founder-story methodology. Architecture spec exists and parts are already in production; role requires translating the CEO's vision into techni…

Chestnut builds systems for insurance carriers to run their distribution business, replacing spreadsheets and legacy systems with real-time data, deterministic workflows, and AI-assisted tooling. This is end-to-end product engineering: design schema…

Remote Full-Stack Engineer (Python/React) role building production AI systems focused on real-world workflows, data pipelines, and integrating LLM-based systems into usable products. Work includes designing backend systems and APIs, building and sca…

Early-stage startup building an AI-powered platform for performance management in asset-intensive industries. Hiring AI Engineer to develop, train, and optimize ML models for performance analysis, forecasting, automated recommendations, build scalab…

Integral is a fractional CTO and AI transformation partnership embedding with scaling businesses ($10M-$100M) as long-term retainers. Hiring two remote roles: Full Stack Developer (remote, LATAM or US, full-time ~40 hrs/week) to ship end-to-end feat…

Our mission is to create opportunities for career advancement through access to affordable education. We are also the market leaders in early childhood (ECE) training and certifications. We are looking for two Staff Engineers to help lead developmen…

Evolve Robotics builds teleoperation systems so people can embody machines (humanoids, drones, industrial arms) from anywhere. Team of 5 scaling to 10. XR Engineer: build the interface between human input and robot movement (hand/body tracking, gaze…

Senior Engineer (3+ YoE) | ONSITE in San Francisco, CA. We're automating the $7T insurance industry with AI. Seed stage in terms of headcount (~20 people) but Series B in terms of business traction (cash-flow positive). Product has caused customers …

Adclear is building real-time multi-agent AI pipelines to evaluate regulated marketing content for clients like Monzo, Lloyds, PensionBee, and Plum. The role reports to the CTO and AI engineers and involves owning how these systems evolve in product…

Lead platform engineer to own full-stack development across Console, Builder, and Solutions apps for an AI platform for molecular discovery. Responsibilities include shipping agentic workflows for molecular design, building integrations with sequenc…

Fullstory provides privacy-preserving session replay and analytics for web and mobile. Multiple engineering roles are open in Atlanta (semi-onsite, 1 day/week), Bogotá, and London, with some Remote (US) options. Listings include senior engineering r…

Pinwheel is the Plaid for payroll — APIs and SDKs that give banks, fintechs, and lenders real-time, consumer-permissioned access to payroll data across 1,800 platforms covering 80% of US workers. Series B. Roles: Fullstack Engineer (backend-leaning)…

At Formical, we believe we can become the first sustainable generation on Earth. Biotechnology plays a key role in this future - benefiting all people, animals, and our planet by making industrial production more sustainable. But bioprocessing still…

BoWatt builds AI software for manufacturing complex hardware products like machines, medical devices or electronics. We’re a profitable, bootstrapped startup headquartered in Munich, with team members across Germany and the UK. We’re looking for a f…

Topliner - Founding Engineer (AI x Executive Search OS). We’re building an AI Operating System for executive search. Not a typical dev role - we’re looking for someone who builds products, thinks in systems, and owns outcomes end-to-end. Tech: Node.…

Senior Fullstack Engineer role at Inventive.ai (YC S23). Hybrid position based in Mountain View, CA. Company builds AI agents for B2B sales to create winning proposals and RFP responses. Founding team from Google DeepMind, Stanford, UC Berkeley, and…

Join us in pioneering the future of e-commerce search. Growing rapidly. We're a hard-working team of 10. We have an office in Jackson Square with a great view that we're looking to fill with other high-performance people! Tech-wise, it's React/Types…

Small scientific software development company building custom scientific and engineering analysis applications (space situational awareness, image simulation, high power microwave systems, modeling and simulation, laser systems modeling, AI/ML inclu…

Build intuitive, robust web apps, machine learning models, backend systems, and AI agent systems for real-time economic optimization and prediction in energy and manufacturing plants. Roles include full-stack/backend software engineers (Python/TypeS…

Healthcare-focused engineering firm in LA building and maintaining technical infrastructure for a concierge primary care practice serving employer groups across multiple states. Seeking a player-coach to be hands-on with TypeScript/Node.js, React, a…

Join HIFI Labs and work on innovative projects with well known and iconic musicians. Past artist activations include Bruno Mars, Linkin Park, Jisoo / Zayn, Rüfüs Du Sol, Dua Lipa, and Mike Shinoda. We're looking for a Senior Fullstack Engineer passi…

Goody is building a gifting product for businesses to recognize employees, retain customers, and accelerate sales. The product is used by Google, Stripe, Anthropic, Meta, NBCUniversal, Notion, and others, and Goody offers a developer API for commerc…

Verkada is hiring a Frontend Engineer on the Access Control team in San Mateo, CA. The team builds mission-critical systems for managing doors, groups, schedules, and users. The role requires a React expert to lead technically within the frontend te…

Ashby is an all-in-one recruiting platform hiring Product Engineers. Engineering team grew from 30 to 60 with plans to double in 2026. Majority of engineers are Senior-Staff+ levels, with high ownership of end-to-end features. 100% remote asynchrono…

River is a Bitcoin-first financial institution building consumer and business products to save in bitcoin and spend in dollars. The company custodies BTC, publishes proof of reserves, and is profitable. Engineering work includes real-time Bitcoin an…

Our team is operating with the special combination of rigor, empathy, and innovation required to fuel a global shift from reactive sick care to preventative, precision healthcare. Hiring across ~10 engineering roles (product eng, devops eng, platfor…

Fast-growing profitable SaaS that helps stores sell Pokemon cards and other trading card games. Two onsite positions in Burlingame, CA: Senior Software Engineer (Full-Time, $100k–$150k) and Customer Service Rep (Full-Time, $40k–$55k).

Sequent Tech | Senior Fullstack Engineer | REMOTE (Global) | Full-time | sequentech.io Sequent builds cryptographically secure online voting infrastructure used in 200+ real elections across multiple countries. We're a fully remote team working on a…

Ping Data Intelligence (Miami, FL) is hiring a Senior Software Engineer to work onsite in Delhi, India. The role involves working alongside the data entry team to increase efficiency, streamline processes through ML and UI improvements, and triage a…

AI x Healthcare Startup | Boston, MA Onsite | Full-time | Early Engineer We're looking for a backend-leaning fullstack dev. You will be one of the first engineers outside of the founding team. Here is a bit more about us: We're a seed stage AI star…

Luminate is an entertainment industry data and insights partner serving record labels, film studios, talent agencies, and the wider music and entertainment ecosystem. Team stack includes Java/Spring, React/TypeScript, SQL/Postgres and Snowflake; use…

Mixpeek is a multimodal AI infrastructure company that converts unstructured content (video, images, audio, documents) into searchable, programmable assets via a unified API. They are building MVS (Mixpeek Vector Store), a distributed vector databas…

Lantern builds AI-powered revenue intelligence and agentic systems. Senior Software Engineer will own complex technical problems end-to-end, translate customer needs into scalable architecture, optimize AI model efficiency (including prompt engineer…

We are building an AI platform for credit unions. A variety of tools (third party integrations + RAG) backed by multiple LLM options, including OLMo, running in our own AWS infrastructure. Small team (CTO is the poster and the first technical hire) …

We make robots that autonomously construct buildings. We are currently developing and manufacturing our autonomous bricklaying system in the centre of Amsterdam. Our robots are already earning revenue operating on construction sites across the Nethe…

Hey, I'm one of Stellar's founders. We're building AI for large contact centers, our primary product is voice. Everyone thinks contact centers are boring. They're wrong. It's the last place where companies actually talk to their customers. We listen…

Pango is building the world's first Agentic Operating System for e-commerce logistics. Our vision is to create the AI e-commerce employee of the future. We are forming our core team in Stockholm and are looking for exceptional engineers. We have ach…

flaconi is an online e-commerce for beauty products, founded in 2011 in Berlin. We are active in 12 countries and expanding to more. We're primarily on AWS, use React, Next.js, Vercel for web, Flutter for our mobile app. Note: Visa "sponsorship" tak…

Join builds collaboration software for the construction industry — helping contractors, owners, and architects coordinate on high-value projects. We are hiring multiple senior/staff engineers across frontend-heavy, fullstack, and backend-heavy profi…

We're a Dental Support Organization running 59 practices across TX/OK/CO/MO/IA/NE/TN/AZ. The unsexy industry description hides what's actually an interesting technical role: a small dev team with real ownership, pushing hard on automation and AI to …

We are applying AI to organize corporate events. We are looking for a senior engineer with at least ten years of full stack experience, a strong focus on product and UX, and optionally some experience building LLM based products. Currently we are fo…

BetterDB is building the tooling ecosystem for Valkey, the high-performance Redis fork backed by AWS, Google, and Oracle. Starting with observability — historical persistence, pattern analysis, anomaly detection, and Prometheus export — so you can d…

RepSpark is a SaaS B2B wholesale e-commerce platform for apparel, footwear, and accessories. Stack includes GraphQL, React, TypeScript, PostgreSQL, and AWS. Hiring a Senior Product Engineer, Front-End to own customer-facing product work end-to-end i…

Oneleet is an all-in-one cybersecurity startup (ASM, Code Scanner, Endpoint Protection, Compliance Platform) that recently raised a Series A. Hiring multiple full-time remote roles across the US and NATO countries and building a forward-deployed sal…

We're building the first AI wealth platform. Hiring senior+ software engineers to partner closely with our co-founders and engineering leadership team. We're a Series C company with ~100 people passionate about making wealth management better, faste…

Small, fast-growing Series A company building an AI-native platform. Replacing a senior engineer moving to a principal role; looking for a Tech Lead / Staff Engineer to help grow the team. Stack is transitioning frontend from Angular to React, backe…

We are building a unified platform for credit and financial data to power financial inclusion globally. YC-backed company (investors include Canapi Ventures, Kleiner Perkins, General Catalyst, and Index Ventures). Hiring software engineers from Mid-…

North Island Ventures is a crypto-focused investment firm. We are hiring a 2nd engineer to join our CTO in building out an AI investment stack using Python, Typescript, and React. We built out an investment agent that our research team is already us…

Seeking senior engineers to join an early-stage AI platform team. Backend Engineer (Kotlin/Java/Scala) to build enterprise integrations, large-scale scraping and parsing pipelines, and systems to apply LLMs to millions of documents. AI Engineer to b…

Rinse provides dry cleaning and laundry delivery services in multiple metropolitan areas in the US and Canada. Stable, decade-old company with sophisticated logistics optimization software and a consumer product. Engineering team is distributed and …

Build and own production systems for an AI-driven B2B payments platform. Work on decision engine for optimal action sequencing, real-time WebSocket infrastructure for human agents, scoring/ranking pipelines combining ML outputs with business rules, …

Civilization Labs is a Public Benefit Corporation building tools to help people pressure-test ideas before acting on them. Our products are designed to make reasoning more transparent, surface uncertainty clearly, ground conclusions in evidence, and…

Fusionbox is a software engineering consultancy that builds enterprise software and open sources client code. Engineers contribute to Django core and the company sponsors PyCon, DjangoCon, and Django Girls. They seek software engineers who value sof…

Findigs is transforming the rental experience by building high-scale applications to streamline renting for millions. The company uses a modern tech stack and fosters a collaborative culture with high ownership and autonomy. The team is based in a n…

Assembly is a vertically-integrated, technology-native holding company that acquires industrial real estate. We take an AI-native approach across the full surface area of our business; data-based geography selection, owner outreach, due diligence, d…

Anduril's ArsenalOS handles receipt, manufacturing, deployment and maintenance of Anduril hardware shipped to customers. The role is for Full Stack Senior Software Engineers on the ArsenalOS team to architect and implement mission-critical solutions…

Alterdd is building the fit intelligence layer for fashion. Currently, brands lack structured data on how their products actually fit real customers, making it a massively costly problem. We are fixing this by helping brands understand their fit so …

Beacon AI builds intelligent systems that make aviation safer and more autonomous. We’ve completed multiple DoD programs and are expanding our team with exceptional technical leaders to push the boundaries of human-machine collaboration in the cockp…

Aha! is hiring experienced full-stack Rails and security engineers and DevOps engineers with Ruby experience. The application is built in Ruby on Rails with React on the frontend. The team is 100% remote, working in North American timezones, and emp…

Hiring software engineers to solve real-world problems and work close to hardware. Projects include scientific tools; automation & robotics (Linux & ROS level); embedded C/C++; Linux, CUDA, server engineering for AI safety, security, and verificatio…

At Shepherd, we're pursuing the most ambitious technical vision in commercial insurance: fully autonomous underwriting. Shepherd is an AI-native commercial insurance platform transforming how high-hazard industries get covered. The infrastructure be…

Founding technical operations lead for an AI-native clinical data platform. Responsible for CI/CD, QA, testing infrastructure, compliance documentation, and ~30-40% independent feature development. Must be actively shipping software using AI coding …

PrairieLearn is an open-source assessment platform used by universities across the US (Berkeley, Princeton, Michigan, Illinois, and others). We power mastery-based learning and large-scale exams. We’re a small, profitable, early-stage company (boots…

Regal is the AI Agent Platform — we power millions of outbound/inbound calls, SMS, and email interactions for enterprise customers like Google, AAA, and Coursera. $82M raised, $7B in revenue driven for customers, 250M+ calls completed. We're hiring …

Hiring software engineers who enjoy solving real-world problems and working close to hardware. Candidates should learn new domains quickly and prefer practical solutions over unnecessary complexity. Projects include scientific tools; automation & ro…

Breezy is hiring an AI Product Engineer to build product capabilities across their platform for residential HVAC field service software. Work across the stack (TypeScript, React, Node.js, PostgreSQL), incorporate LLMs and automation, and use AI-assi…

Loop is a fintech/payments company based in Toronto building infrastructure that moves money. Hiring Senior Frontend Engineer (own the user-facing product experience; strong React skills) and Senior Backend Engineer (work on the core payments platfo…

Jurisphere is building an enterprise-grade Legal AI platform used by top law firms in India and the US. We are building product and systems infrastructure around legal workflows, document intelligence, review systems, and AI-powered execution. Engin…

Atomic Tessellator provides computational infrastructure for advanced materials for defence and aerospace. Hiring multiple roles (including Lead Engineer - Front-end and Lead Engineer - LLMs). Roles are remote; candidates should be within ±4 hours o…