APIs Jobs

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…

Atomscale is building AI to improve atomic-scale materials manufacturing, focusing on translating new materials into scalable technologies and products. Responsibilities include building ergonomic interfaces for data visualization, workflow automati…

Parabola is building an AI-powered workflow automation platform used by ops and finance teams at companies like Lyft, Flexport, and WHOOP. They help non-technical teams build production-grade automation to handle PDFs, emails, spreadsheets, and scat…

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, developer-first, and focused on making data movement radically s…

Kinelo builds a human+AI orchestration layer to assist engineering teams and manage company processes. The company is well-funded, founded by a serial founder, anti-bureaucratic, and highly technical. New hires will join a small team, help shape cul…

Sage Bionetworks | USA Remote | Full Time | Principal Software Engineer (Backend) https://job-boards.greenhouse.io/sagebionetworks/jobs/4091284009 At Sage Bionetworks, we believe in the power of open science and interdisciplinary collaboration to c…

At Tasklet (https://tasklet.ai/), we're building the world's most powerful AI agent platform for business automation. We're looking for a staff-level software engineer to share technical leadership of our core agent infrastructure. You'll architect …

THE MISSION: Help providers and patients make life-changing medical decisions with accurate, timely genomic test results. The EMR team builds the interoperability backbone that connects hundreds of healthcare organizations to Natera's testing platfo…

We help experts earn meaningful income, often five figures a year, by sharing what they already know through Zoom calls, surveys, and AI interviews. Team: We’re a small, senior team that values quality, simplicity, curiosity, and collaboration. If y…

Build and maintain Topliner, an AI-powered executive search platform. Work includes integrations with Loxo, Metaview, GetSales, Calendly; API design; background jobs and sync pipelines; auth flows; queue processing; caching; and React+TypeScript fro…