NetBird is open source networking and access control WireGuard-based overlay networks with zero-config peer-to-peer connectivity. Open source, built in Europe, used by thousands of teams worldwide. We're a small and growing team going up against (and working with) the incumbents in network security. Post Series A. - Engineering Manager : You will take a huge part in leading and scaling our engineering org.…
We're building a self-improving IDE for running coding agents in parallel. Tens of thousands of engineers use it as their main IDE, at companies like Netflix, DoorDash and Wix. It's source-available: We're 4 people, including 3 ex-YC CTOs. The work goes from the pty and stream transport up to the UI, all TypeScript. You'd own big features end to end and likely ship something in your first week. Interviews: a 15 min…
Cleverbase · The Hague, Netherlands · ONSITE (hybrid)
Cleverbase runs an API platform for online trust: qualified e-signatures, PKI, digital identity and high-assurance identity onboarding for European organisations. We’re now building towards the EU Digital Identity Wallet and the European Business Wallet. Helping customers design and ship their solutions on our platform matters as much to us as building the platform itself. As a Qualified Trust Service Provider under…
LiveKit is building the infrastructure layer for the voice-driven era of computing. Our platform gives developers everything they need to build, test, deploy, scale, and observe agents in production. Hiring: >> Product Engineer | NAMER, EMEA, APJ (Remote) or SF (Hybrid): >> Forward Deployed Engineer | United States (Remote): >> Forward Deployed Engineer | United Kingdom (Remote): >> Developer Success Engineer |…
Buoyant · US / Canada / Brazil / Europe (CET-compatible)
Buoyant is the company behind Linkerd, the CNCF-graduated service mesh for Kubernetes. We’re a small, fully remote engineering team building a new cloud-native infrastructure product. We’re looking for a senior, self-directed engineer who has built production infrastructure software and is comfortable working deep in the Kubernetes ecosystem. Relevant experience may include Kubernetes APIs, controllers/operators,…
Coast is re-imagining the trillion-dollar U.S. B2B card payments infrastructure, with a focus on the country’s 500,000 commercial fleets, 40 million commercial vehicles, and many million commercial drivers. Coast's mission is to deliver modern digital experiences, affordable and transparent financial services products at a transformational scale, and to improve working lives in one of the country’s biggest industry…
data engineeringinfrastructurefull-stackdesignproduct managementfintech
Mastra is the open-source TypeScript framework for building AI agents (agents, workflows, memory, evals, tracing). From the team behind Gatsby, YC-backed, Why: We’re starting to build more and more agentic features into Mastra: Trace intelligence, and we’re working on various Agent Learning features to automatically self-improve agents (Autoevals + Suggestions, Rollouts). In addition, we’ve been increasingly running…
BREAKFAST Studio · Brooklyn Navy Yard, NYC · ONSITE
$150–200k
We're the studio behind the artist BREAKFAST. We design and build his robotic sculptures for the Venice Biennale, Rockefeller Center, the Fontainebleau in Las Vegas, Tiffany & Co. in New York, Dubai and Seoul, and private collections around the world. The largest is the world's largest kinetic sculpture: 53 feet wide, nearly 3,000 motorized tiles driven by live wind and tide data, aboard a Royal Caribbean cruise…
Flowstate ( is building infrastructure for the emerging human + AI workforce. Companies are rapidly adopting Claude, ChatGPT, Cursor, Copilot and internal agents, but most still have very little idea what that AI is actually doing, what it costs, what work it contributes to or whether it is making the organisation better. We’re building the systems underneath that: an AI router and proxy, native macOS and Windows…
Manifest is on a mission to secure the global software and AI supply chain. Our platform automates discovery and risk analysis across the software and AI systems organizations build and buy—SBOMs, AIBOMs, vulnerabilities, and third-party risk. Founded by alumni of DoD, CISA, and Palantir, we're backed by First Round Capital, Ensemble VC, Homebrew, and BoxGroup, and we work with the US Air Force, DHS, Global 2000…
Flow Traders is a leading proprietary trading firm with an entrepreneurial and innovative Tech culture at the heart of its business. We are looking for Research Engineers in our Hong Kong office. Join us build and scale the research framework behind our systematic trading models. You’ll work closely with Quantitative Researchers, drive end‑to‑end ML pipelines, and shape global standards for data‑driven model…
Freeform · Onsite · Hawthorne, CA (Los Angeles County)
Freeform builds AI-native manufacturing systems that unify software, hardware, and physics to produce industrial-scale parts at the speed of human ideation. By treating manufacturing as a single integrated system, we unlock a new era of innovation where complex hardware is designed, built, and scaled without limits. This isn’t just an improvement; it’s a leap forward in how complex metal parts are made, with the…
Most of the code a team ships is third-party, and scanners flag hundreds of vulnerabilities in it. depproof tells you which few attackers are actually exploiting, so you fix those first. It runs inside your own environment, and your code never leaves. We're a small, founder-led company looking for a part-time sales lead who has sold to security or engineering teams: running first conversations, shaping the pitch,…
Purchasely · Paris, France · REMOTE (France) · Fluent French and English required
[€60k-€70k + BSPCE]
Purchasely is an in-app monetization platform: app teams design, launch and A/B test paywalls and onboarding screens without shipping an app update. Our SDKs (iOS, Android, Flutter, React Native, Cordova) are embedded in our customers' apps, so if our SDK crashes, someone else's app crashes. Stability, binary size, backward compatibility and clean public APIs come first. You'll be a hands-on engineer on a small…
Coder is an AI software development company leading the future of autonomous coding. We empower teams to build software faster, more securely, and at scale through the collaboration of AI coding agents and human developers. Our mission is to make agentic AI a safe, trusted, and integral part of every software development lifecycle. Coder’s self-hosted Agentic Development Environment (ADE) is the foundation for…
Cloudflare · Austin, TX / Seattle, WA / London, UK · ONSITE
$185k–$254k + equity (US range, varies by location)
Last week we announced the General Availability of Basin ( a serverless data platform built on Apache Iceberg and R2. It has three parts: Pipelines (streaming ingestion and SQL transforms), Catalog (a managed Iceberg REST catalog with table maintenance) and SQL (a distributed query engine). We also launched K2 ( a durable event stream built on R2 that started out as the ingestion buffer behind Pipelines. We're…
We build software used across college athletics, professional sports, higher education, and other organizations, from reporting and compliance to live event operations. We're a team of < 15 people, with no venture capital, and profitable. This means we get to make decisions for our customers and our team, not for investors. Rails is at the core of everything we build, and we keep reasonable hours and a codebase…
Quantum Minds is hiring a senior engineer to support a modern analysis pipeline involving compiler tooling, program analysis, fuzzing, and automation. The work includes preparing the codebase for future open‑source release. You’ll work on: • LLVM IR generation + metadata • LLVM pass development (IR cleanup, MMIO handling, fuzzability improvements) • Fuzzing harnesses + campaigns (libFuzzer, AFL++, Honggfuzz) • Crash…
PostHog · REMOTE (all remote) · Hiring GMT-8 to GMT+2
* we are growing through more autonomy and transparency not through process. * we have a ton of scale and a bunch of super interesting technical problems to solve * we're building 20 more products over the next couple of years, so you could end up building one of those * public compensation calculator! see immediately what you'd get paid * we're hiring: ai research engineer, technical customer success managers…