APIs Jobs

Korva is building the AI-native operating system for health plan administration. Self-funded health plans cover 100M+ Americans, yet third-party administrators (TPAs) run them on manual processes and legacy software. We're rebuilding that back offic…

We’re hiring a Senior Full Stack Engineer at Intrinio. Intrinio powers fintech platforms, trading tools, and analytics applications with real-time and historical financial data. Our team standardizes complex market data into clean, developer-friendl…

Succeed is building a platform to help high-school students discover academic opportunities around the world — summer schools, competitions, research programmes, and university experiences. Goal: reach one million students. Hiring a lead engineer to…

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…

Parabola is building an AI-powered workflow automation platform used by ops and finance teams at companies like Lyft, Flexport, and WHOOP. The role (Sales/Automation Engineer) works with customers throughout the sales cycle to define success criteri…

Hearo (Remote) — Founding Engineer — AI Product Intelligence Platform. Hearo is building an AI platform that turns public internet conversations (Reddit, app reviews, online communities) into structured product intelligence to help founders and prod…

We are building decentralized AI infrastructure: an inference platform for sovereign AI agents unifying orchestration, data, and compute. Small team, high ownership, real equity. Blockchain Engineer — Rust/Substrate L1 protocol development: custom p…

QuiverAI is building foundational AI models and tools for vector design and multimodal systems that generate editable SVGs and design assets from text, images, and sketches. Hiring across design, engineering, and research for roles based in San Fran…

Doconomy, a market leader in impact technology, dedicated to driving global climate action by equipping banks with innovative financial tools that educate and foster positive change. Our ecosystem of tools combines expertise in behavioral science to…

Redbook is the cloud-based software of reference for cattle feed yards, digitizing the $90B cattle industry. The product connects field operations and financials and is used by more than 100 customers. Hiring a Staff Software Engineer to integrate w…

Estuary is a post–Series A, VC-backed, open-source startup focused on real-time data replication and transform for large-scale OLAP data flows. Hiring senior and staff backend engineers to own core systems for real-time data pipelines, a backend eng…

Mobian is a brand safety, contextual intelligence, and measurement company hiring Senior / Staff Engineers (Remote, Global) across two tracks: Core Systems Engineers to design, scale, and harden production-grade APIs, data pipelines, ML deployments,…

Imagine having an entire software company working just for you – housing all your personal data, proactively working in the background doing chores, building apps, and organizing information to support your life. We're building a new category of per…

Kroo is building the knowledge platform for construction. They have a platform used by 30+ enterprise customers for data connectors, warehousing, and knowledge graphs tailored to construction industry systems (including on-premises systems and legac…

xAI's London team is hiring two onsite full-time roles. Backend Engineer: build and scale high-performance production systems powering grok.com and the xAI API; strong Rust (or C++) required; distributed systems experience a plus. Developer Experien…

Adobe is hiring an AI Agent Engineer. The team is building Adobe’s next‑gen, AI‑first marketing platform, looking for an engineer to design and ship production‑grade AI agents at enterprise scale. Responsibilities include building and orchestrating …

We are an AI platform for protein engineering (customers include Novo Nordisk, J&J, Grifols). We run our own wet lab in Amsterdam to generate training data for ML models and to build the automation playbook we share openly with the field. Hiring a s…

Multiple full-time roles (Support Engineer, Designer, Software Engineer) based in the SF Bay Area. Support Engineer: use Claude, Codex, or Shelley to search and augment the codebase with scoped API keys to improve customers' lives. Designer: use Cla…

Flux.ai builds a browser-based EDA with integrated AI hardware engineering tools and agentic capabilities. Hiring multiple senior engineering roles (Platform, Front End/Product, Software for agentic products, and DevOps) to develop and maintain user…

Ro | NYC | Hybrid/Onsite | Full Time. Hiring Backend Engineers, SRE, Team Leads, Management, and an iOS Engineering role. Ro is a direct-to-patient healthcare company with a mission of helping patients achieve their health goals by delivering the ea…

Faraday is automating the back office for the $600B home services industry (HVAC, plumbers, electricians). Contractors are buried in essential paperwork — permits, warranties, rebates — and our AI agents handle these complex workflows so projects st…

Hiring a Senior Backend Engineer (Go) to work on industrial/grid-scale battery and renewable generation platform: monitoring, managing and trading assets on multiple energy markets. Small engineering team (~7 backend engineers). Office in London Bla…

Building Topliner, an AI-powered platform for executive search. Responsibilities include integrations with Loxo, Metaview, GetSales, Calendly; API design; background jobs and sync pipelines; auth flows, queue processing, caching; and building React+…

Estuary | US-Based / Remote | Full-time – https://estuary.dev/ Estuary is a VC-backed, post–Series A startup powering right-time data replication and transform — from sub-second CDC replication to terabyte-scale OLAP data flows. We’re open-source, d…

We run a platform that handles story publishing, media delivery and newsroom workflows for hundreds of organizations with millions of readers every month. Backend uses PHP (Symfony) for APIs/app; frontend uses TypeScript/React. Hiring Senior Backend…

Nango (YC W23) is a developer infrastructure company and a provider of API access for agents and apps, enabling AI applications to connect to the real world through integrations. More than 250 paying customers (including Replit, Mercor, and Exa) rel…

Artificial Analysis is an independent AI benchmarking and insights provider (team of 25+), backed by investors including Nat Friedman, Daniel Gross, and Andrew Ng. They benchmark AI systems for engineers and companies; benchmarks cited by NVIDIA, Me…

Sells is a middle-market M&A advisory firm building internal software, automation, and integrations to improve deal, document, and workflow management. Hiring a Full Stack Engineer to own internal tools, integrations, and automation, shipping increm…

Hike Medical is reinventing musculoskeletal care with an AI-vision platform that converts a 30-second web-based foot scan into precision-engineered, 3D-printed insoles. Based in Boston's Seaport, the company serves large employers and health systems…

DrSwarm is building AI-driven workflow automation for healthcare clinics / health systems (scheduling, RCM/billing workflows, patient ops). This is a true 0→1 role: ship fast, talk to customers, own systems end-to-end. You will: - Build product end…

Mozart AI is a Digital Audio Workstation (DAW) with built-in AI Co-Production aimed at 'Hybrid Musicians'. Founded ~8 months ago with 80k+ beta users and Product Hunt recognition; seed-stage (oversubscribed). Hiring two Full-Stack Engineers: a Front…

Doowii is building an AI operating layer for education analytics that connects institution systems (SIS/LMS/CRM) to enable non-technical teams to ask questions, explore, and take action. Hiring software engineers to build AI-first product experience…

When you npm install openai or pip install anthropic, you’re pulling code generated by Stainless. We’re building the platform for high-quality, easy-to-use APIs — and companies like OpenAI, Anthropic, and Cloudflare already rely on us. We’re ~3 year…

Full Stack Software Engineer role working on greenfield product development for SalesJack's CRM and prospecting platform; collaborate with founders and lead engineers, take initiative in a startup environment. Hiring process includes initial call, l…

Kinelo builds a human+AI orchestration layer to improve engineering team coordination and management. Seeking high-ownership candidates to join a small, technical team in a newly opened San Francisco office to help shape culture, architecture, and r…

We’re building and maintaining a quantitative investment strategy (QIS) calculation engine used across Global Markets. Work closely with sales, trading and structuring teams to implement infrastructure required to calculate quantitative indices in a…

Neurotone is revolutionizing auditory training with AI, helping people with hearing disabilities maximize their hearing aids. We're a small, fast-moving team of technologists and industry veterans building clinically grounded products that improve l…

Mozilla’s New Products organization is an internal incubator building Tabstack (https://tabstack.ai), the browser automation stack for AI agents to enable fast, reliable web interactions in agentic applications. The Founding GTM Lead will own the 0→…

We’re building a distributed, software-defined power plant: buildings, batteries, EVs, and on-site generation buying and selling power in real time (cloud control plane + embedded hardware + energy markets). Small, high-performing team. Own systems …

Xledger is a cloud ERP system expanding its team in Colorado Springs and seeking strong generalists to create best-in-class functionality. Onsite position only with no visa sponsorship. Requirements include a deep understanding of how the web works …

We’re building AI-powered tools for artist discovery, helping music professionals find emerging artists that fit their taste and vision. Looking for a Senior Full-Stack Engineer/Data Scientist to take ownership across backend, data, and product feat…

OpenSanctions builds an open source database of sanctioned entities, PEPs, and other risk-relevant subjects used in compliance screening and investigations. The Customer Engineer will bridge customers and engineering: help customers integrate the AP…