Backend Engineer Jobs

SOPHIE is a fast-growing AI startup building next-generation tools for enterprise productivity. We’re looking for a backend engineer (3–4 years' experience) to join our core tech team. You'll work with Java/Rust and Python, helping scale our AI plat…

Cactus is a strategy, design, and engineering firm that builds physical and digital products for some of the world's leading healthcare clinics. Fully remote with teams based in the US and Brazil, we’re hiring for a variety of software engineering r…

Help us build the future of search

We’re looking for a Backend Engineer with data science experience to join our small team of experienced developers. You’ll work on core platform features including APIs, data pipelines, and our planning engine using Python, Django, the modern data s…

We provide isolated runtimes for executing untrusted code, mostly generated by LLMs. Our sandboxing is powered by a combination of WebAssembly, V8, and microVMs. Our customers do things like extract data from log lines at run time by asking claude-3…

Levels.fyi's mission is to help every professional build a better career through the most accurate insights and services. We're building the future of compensation & hiring by centering ourselves around professionals. You'll be joining a close-knit …

Ascertain is a healthcare AI startup backed by Northwell and Deerfield. We are a small team automating the painful admin work that clogs up the U.S. healthcare system. Our goal is to give time back to clinicians so they can focus on patient care, no…

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

We are consistently hiring backend engineers ranging from Senior level to Staff / Lead / Director / Principal Go engineers. If you have experience with a different tech stack, we offer a 10-week onboarding program to train you in Go, scaling and oth…

Do you enjoy building security and deployment tools for other engineers? Join us to hack on GitHub. Most of our code is Go, we have very little technical debt, our codebase is clean and small. We're looking for senior engineers to join the Teleport …

CLEAR's mission is to strengthen security and create frictionless experiences. With over 30 million members and a growing network of partners across the world, CLEAR's identity platform is transforming the way people live, work, and travel. CLEAR co…

We are looking for software engineers who, if given enough time, could build Better Stack on their own = looking for Full-Stack/Product Engineer/Generalist to help us create high-quality software with exceptional UX—end to end.

We're building the first AI-enabled regulatory platform for drug development. The existing processes to submit regulatory submissions to government bodies is extremely time consuming and expensive (plus no one likes paperwork). We're building a SaaS…

I'm Max, co-founder and CTO of Langfuse (YC W23) - we're building open source LLMOps dev tooling. We started with observability and have branched out into more workflows over time (evals, prompt mgmt, playground, testing...). We have a bunch of trac…

RevEng.AI is building foundational AI models to identify malicious threats and security vulnerabilities inside software at the binary level. We’re a seed stage startup having raised $4.25m from top tier VCs across the US and Europe. You’ll play a ke…

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.

Cactus is a strategy, design, and engineering firm that builds physical and digital products for some of the world's leading healthcare clinics. Fully remote with teams based in the US and Brazil, we’re hiring for a variety of software engineering r…

We provide isolated runtimes for executing untrusted code, mostly generated by LLMs. Our sandboxing is powered by a combination of WebAssembly, V8, and microVMs. Our customers do things like extract data from log lines at run time by asking claude-3…

Buildings account for ~40% of all emissions. There is a ton of federal, state, and local programs to help decarbonize buildings -- but this money is difficult to access, trapped behind complicated program requirements, uncertain eligibility, lack of…

We are software builders at :heart: CEO is a software engineer, COO is a software engineer and you guessed it; CTO is an engineer, too. We are engineers, making the tools we always wanted. If you love building amazing software, you're at the right a…

We are consistently hiring backend engineers ranging from Senior level to Staff / Lead / Director / Principal Go engineers. If you have experience with a different tech stack, we offer a 10-week onboarding program to train you in Go, scaling and oth…

Hey — we’re building AI-powered tools to help law firms work faster, smarter, and with less busywork. Our first module is an AI call center that transcribes and classifies calls to help teams prioritize urgent cases. But that’s just one part — we’re…