Backend Engineer Jobs

Founded by myself and Corey Quinn of The Duckbill Group/Last Week in AWS, we're building a cloud cost management product based on our six years of experience consulting directly in the space for hundreds of clients. We're looking for a full-stack or…

Layer Health is an AI/ML startup spun out of MIT by David Sontag, leveraging LLMs to transform how clinical data is understood and used. Our systems are actively deployed in life science companies and major healthcare systems, providing an AI layer …

Imagine Vercel, but for AI Agents. We're building the launchpad for code-based AI agents that solve real business problems. Prompt-based GPTs are cool, but we believe in giving developers the power to build intelligent, purpose-driven agents from th…

We’re looking for a Co-Founder & CTO to join us at the ground level and help build an AI search LLM model that amplifies authentic voices. We’re leveraging GenAI and RAG to redefine how search works — more transparent, fair, and creator-centric. Spe…

Polars is the company founded from the Polars OSS project. The company is building a distributed query engine and managed data platform that can run the full polars API with different scaling strategies. (Almost) Our whole tech stack is in Rust and …

Real-time AI humans - emotive, scalable and available 24/7.

Since 2020, Pliant has been on a mission to rethink credit cards and empower companies to grow by providing a smart way to pay that scale with their business. With our app and API-based solutions, Pliant allows companies to issue physical and virtua…

Sphinx Defense builds software to solve complex national security problems for America and its allies. Founded by engineers and technologists with deep experience across commercial and defense technology, we’re building a vehicle-agnostic communicat…

We are looking for a full-time Frontend and Backend Engineer to build out Godel Terminal, a professional web-based financial terminal software offering comprehensive financial and investment data.

Exa is a search engine built for AIs. We enable developers to filter the internet's content with complex queries in order to bring the world's knowledge into their AI apps.

About Vapi: We're building the infrastructure that helps developers close the gap between the raw model and voice AI in production. We launched in March, scaled revenue and raised a large Series A round from a top-tier firm.

Mintlify (YC W22) powers the documentation of 3,500+ companies including Anthropic, Pinecone, and Zapier, to over 20% of the last YC batch. You're a great fit if you master TypeScript, Node.js, and Express. Bonus point if you enjoy RESTful API desig…

Estuary is a VC-backed startup focused on simplifying real-time data pipelines. We’re building open-source solutions to unify real-time and batch data integration, making complex data tasks easier at scale. Our team is small, collaborative, and valu…

We're looking to build out our Engineering team (across the stack). Please note that all of our roles are NY-based. A bit about us: we were founded in April 2023 with the mission of helping the government to serve communities better with modern soft…

Cogram is an LLM-based productivity platform for architecture, engineering, and construction (AEC). Our product automates tasks such as meeting notes, site visits, and project administration. We’re YC alumni, well-funded, and growing. We’re looking …

We issue Visa & Mastercard cards not backed by a bank. Instead we use stablecoins held in non custodial wallets. This type of service is crucial for many people in places like Argentina, Colombia, Nigeria, Turkey, where inflation soars and shelterin…

Building a Gen AI Platform. We grew +40% last month to hit 1.2M daily users. We did it with a team of 10. CHAI is able to keep growing is because it is ran like a quant-trading team.

We are looking for a full-time Frontend and Backend Engineer to build out Godel Terminal, a professional web-based financial terminal software offering comprehensive financial and investment data.

Sitch is a new type of concierge dating app. We’re using AI + Humans to ask you questions, get to know you, then help you find love. We’re a concierge matchmaker but we don’t call ourselves that and we don’t charge the obscene prices that matchmaker…

At https://reworkd.ai, we're building application layer LLM agents to extract web data at scale. We are foundational data infrastructure for startups today that are fine tuning models or building some web data constrained product. We're backed by YC…