Build and operate email transport infrastructure, including SMTP delivery and MTA systems.
Design systems for throttling, IP pools, warmup, and reputation-aware routing.
Partner with Trust & Safety to protect the sending network and participate in incident response.
Resend is building the most accessible email platform for developers, with over 4 million users. We're a fully remote team of 50 across 15 countries, backed by a16z and Y Combinator.
Build and operate backend infrastructure for high-volume email delivery.
Develop SMTP delivery, routing, retries, throttling, and controls.
Partner with Trust & Safety to protect the sending network.
Jobgether is an AI-powered recruitment platform that matches candidates to roles using objective core requirements analysis. It operates with a collaborative, low-ego culture and fully remote operations.
Design and build backend systems that are clean, testable, and efficient.
Architect scalable APIs and infrastructure for high-trust environments.
Own core systems end to end, and shape engineering practices and technical culture.
At Duna, we see the company as the second product we’re building and are continually working to create a transparent, ambitious culture. We are a remote-first, fast-moving team of builders backed by world-class investors, looking for exceptional people who love to create, build, and ship.
Take deep ownership of systems and product areas, becoming the go-to technical expert for what you own.
Architect, build, and maintain highly available, scalable REST APIs and backend services across distributed systems.
Build agentically with AI coding tools, staying at the forefront of emerging AI tooling and practices.
Postscript is an AI messaging platform for Shopify brands, helping e-commerce marketers drive revenue through SMS marketing and AI features. Backed by Greylock and Y Combinator, the company has been fully remote since 2018 and serves 20,000+ Shopify brands with a culture of ownership and AI-first development.
Set technical direction across Coder’s agent harness, integrations, and workflows.
Design and build production systems in Go, with work across React and TypeScript where needed.
Lead complex projects from early ambiguity through production.
Coder is a leading platform for AI development infrastructure, enabling enterprises to run human and AI-driven workflows in secure, governed environments. The company provides self-hosted, agent-ready workspaces and fosters a collaborative, AI-forward culture.
Build and operate reliable cloud services on AWS and Cloudflare, covering compute, storage, networking, and managed infrastructure.
Evolve the infrastructure that powers web applications and AI agents on Webflow Cloud, including CDN and edge computing.
Own features end-to-end, from customer problem through design, implementation, rollout, and ongoing improvement while using AI-assisted development practices.
Webflow is an agentic web marketing platform that helps modern marketing teams build, manage, and optimize high-performing web experiences. Webflow is a growing, privately held company that values grit, craft, quality, and equality, and offers a remote-first culture with comprehensive benefits.
Architect multi-agent systems that orchestrate specialized agents for reliable, stateful workflows.
Build automated governance and guardrails to ensure safe, high-speed autonomous operation.
Engineer context and memory infrastructure using knowledge graphs and vector stores for deep codebase understanding.
Onebrief builds collaboration and AI-powered workflow software for military planning and operational coordination. Founded in 2019 and valued at over $2 billion, they are a distributed team of builders from military, operational, and technology backgrounds, backed by top venture capital firms.
Build real-time risk controls and decisioning systems for money movement products.
Develop signals and models to detect scams and abuse across the platform.
Establish technical foundations for a new, high-impact Trust & Safety function.
Phantom is on a mission to connect the world to the freedom of open markets, offering access to global markets that never close. With around 180 people, fully remote, and backed by a $150M Series C from top investors, Phantom fosters a culture of ownership and high agency.
Design and implement backend services for licensing, entitlements, feature access, and usage limits across NodeZero's product and APIs.
Build and evolve provisioning, admin experience, MSP/MSSP capabilities, and audit logging for a multi-tenant SaaS platform.
Operate production services with monitoring, incident response, and a high bar for design quality and test coverage.
Horizon3 is a fast-growing, remote cybersecurity company that helps organizations proactively find, fix, and verify exploitable attack vectors through its NodeZero autonomous pentesting platform. The team is a fusion of former special operations cyber operators and startup engineers, fostering a culture of respect, collaboration, ownership, and results.