Backend Software Engineer Jobs in United States

You build backend systems that stay up when things get ugly.You care about correctness, performance, and clarity over cleverness.You want your code to power decisions involving real money.If you have only worked on internal tools or low-impact services, this is not the role. The Role, In Plain Engli

About Teambridge: More than 60% of U.S. workers (and 70% worldwide) don't sit behind a desk. They're on their feet stocking stadiums, working the night shifts, caring for patients, and changing the linens. Their work keeps the world running, yet the software they rely on is rigid, outdated, and not

About BRINC: At BRINC, we are building the technology that will define the future of emergency response. As a vertically integrated U.S. drone technology company, BRINC designs and manufactures unmanned aircraft systems, autonomous drone stations, command-and-control software, and advanced autonomy

New Lantern is building an AI radiology resident—think Cursor for radiologists. Our application integrates the three software tools radiologists use all day [1], together with AI, to create a platform that saves radiologists toil and lets them focus on reading images and finding disease. This role A

Every year, companies spend over a trillion dollars moving freight across the U.S. but the system for matching trucks with jobs is still slow, manual, and fragmented. FleetWorks is fixing that. We're building products that transform the chaotic freight booking process into a modern, intelligent, age

Who we are Ketch is a Series B data privacy B2B SaaS redefining responsible data use for the AI era. The Ketch Data Permissioning Platform is the new layer of business technology that helps brands collect, control, and activate permissioned, privacy-safe data across every device, system, and third-p

Qrypt's mission is to protect the world's data and restore privacy. Qrypt hardens cybersecurity and future-proofs encryption against quantum attacks by eliminating key transmission. Qrypt's unique technology independently generates symmetric keys at multiple endpoints for critical workflows today. W

About the Company America is under sustained cyber attack. Our adversaries infiltrate our networks, steal our IP, and degrade the digital infrastructure that modern life runs on. They’ve learned—correctly—that those attacks rarely produce consequences. Twenty was founded to change that, by making ou

Role Overview The Senior Java Backend Developer is responsible for designing, developing, testing, and maintaining scalable software solutions that support critical business capabilities. This role partners with architects, product teams, and fellow engineers to deliver high-quality APIs and backend

Senior Backend Software Engineer, Mission Analytics Make an Impact Where It Matters Most At Intelliforce, we build software that helps analysts make sense of large, complex data sets and turn that information into something they can act on. In this role, you will join the team responsible for develo

About David AI David AI is the first audio data research company. We bring an R&D approach to data–developing datasets with the same rigor AI labs bring to models. Our mission is to bring AI into the real world, and we believe audio is the gateway. Speech is versatile, accessible, and human—it fits

Qrypt's mission is to protect the world's data and restore privacy. Qrypt hardens cybersecurity and future-proofs encryption against quantum attacks by eliminating key transmission. Qrypt's unique technology independently generates symmetric keys at multiple endpoints for critical workflows today. W

Do you want to work for a mission-driven non-profit, writing software that will contribute to helping the livelihoods of millions of coffee farmers around the world? Enveritas is a 501(c)(3) non-profit and Y Combinator-backed startup looking to hire for our Engineering & Data Group. We are looking f

About Fin Fin is a next-generation payments platform built for high-value, global, and instant transactions. We are a Series A-stage company backed by Sequoia, Circle, and other notable investors. Powered by stablecoins, Fin enables users and businesses to move millions of dollars in seconds - wheth

About the Company America is under sustained cyber attack. Our adversaries infiltrate our networks, steal our IP, and degrade the digital infrastructure that modern life runs on. They’ve learned—correctly—that those attacks rarely produce consequences. Twenty was founded to change that, by making ou

Construction is the 2nd largest industry in the world (4x the size of SaaS!). But unlike software (with observability platforms such as AppDynamics and Datadog), construction teams lack automated feedback loops to help projects stay on schedule and on budget. Without this observability, construction

Every year, companies spend over a trillion dollars moving freight across the U.S. — but the system for matching trucks with jobs is still slow, manual, and fragmented. FleetWorks is fixing that. We’re building voice agents that transform the chaotic freight booking process into a modern, intelligen

About Concourse Concourse builds AI agents for corporate finance teams. We connect core enterprise data sources and deploy AI agents that can analyze the data through natural language, deliver insights in seconds, and enable our customers to make better decisions. Since launching less than a year ag

ABOUT THE ROLE We are seeking a seasoned backend software engineer and hands-on technical lead to drive the expansion of Peloton’s e-commerce platform across web, retail, and emerging sales channels. In this role, you will architect and scale high-performance, resilient backend systems that power se

Role OverviewThe Lead Backend Software Engineer role adds leadership of technical design and development, complex problem resolution, guidance and support for colleagues, code and documentation reviews, and use of modern principles, methodologies, and tools to advance business initiatives. Key Respo