The Open Source, AI-native billing platform - Lago is the billing platform that gives teams full transparency, control and flexibility to manage and scale any pricing model. Trusted by PayPal, Synthesia, CoreWeave and Mistral.ai to handle their billing.
Right now our hiring is deliberate and specific. We'd especially love to hear from applicants to our open Infrastructure Engineer and Product Engineer positions.
Our open roles here: https://jobs.ashbyhq.com/lago
- Infrastructure Engineer (Europe, Canada or Brazil)
- Backend Engineer (Ruby / Europe)
- Frontend Engineer (React / Europe)
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- Product Engineer (France or wider Europe)
- Product Designer (France or wider Europe)
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- Enterprise Sales Consultant (France)
- Forward Deployed Engineer (France or wider Europe)
- Product Engineer (Growth focus)(Europe/USA)
Looking forward to seeing some great applicants from here!
Elucid builds FDA-cleared AI software that analyzes cardiac CT scans to characterize plaque and predict heart attack and stroke risk. The world's best cardiologists use our output to make treatment decisions for real patients. As such, our platform is regulated as a Software as a Medical Device (SaMD) product by the FDA and we operate under HIPAA, ISO 13485, and ISO 27001.
We're hiring a Principal Platform Engineer to own our cloud infrastructure and developer platform: AWS, containers, Terraform, CI/CD, observability, and the self-service tooling that lets our application teams ship quickly inside a regulated SDLC.
We are looking for: 7+ years in DevOps/SRE/platform roles, deep AWS, strong IaC, comfort with containers (ECS/Fargate, Kubernetes), and one language you reach for when building tooling (Python, Go, Rust, Ruby, C++). Healthcare or regulated-industry experience is a plus, but not a requirement.
On-call is a shared rotation, roughly 2–3 weeks per quarter, business-day coverage only (9am–midnight ET, no overnights).
Apply at the link above.
As a Senior DevOps Engineer, you will help run the cloud infrastructure that powers our Ruby API for our family of LGBTQ+ mobile dating apps. We are looking for engineers who are passionate about architecture and monads! Ok just kidding about the last part -- but you can see more about our approach to API development in our Medium blog series at https://medium.com/perry-street-software-engineering/a-summa.... The position is 40 hours per week and ongoing/full-time. Our company is also proud to have recently launched the first architectural linter for Ruby, described at the link above.
Apply for our roles here: https://www.perrystreet.com/careers
We spend a lot of time describing our technology and our approach on our Blog, above. If you want to make it to the first round of in-person Zoom interviews with our company, take the time to read our blog posts, and let us know how what we've done compares to, or could have helped with, your experience. Given the volume of applications we read, the most impactful applications contain cover letters with specific examples, demonstrate understanding of the business in which we operate, and include updated and detailed LinkedIn profiles. Candidates using AI to assist in building an application for this role should consider how their cover letter contains specific examples of experience with our actual job requirements, as well as demonstrable interest in and understanding of our company and community. Note that purely AI-written applications will not be considered for any role.
We're building a conversational revenue system for eCommerce — think AI + automation that actually drives sales over WhatsApp/SMS, not just dashboards.
Small team, product-first, moving fast.
Stack: Ruby on Rails, JS, Postgres, real-time + messaging infra Work: automation engine (“playbooks”), AI-assisted flows, scaling data + messaging systems
Looking for strong full-stack engineers who:
- ship fast and care about product
- are comfortable owning things end-to-end
- have solid Rails experience
Apply: https://applicantai.com/hellotext/senior-full-stack-ruby-on-...
We're building payment rails for AI agents; fully-owned rails across traditional banking and stablecoins, and the full set of funds flows that AI agents need to transact in the real world with businesses, consumers, and other agents (wallets, pay, request, credit, billing, and more).
We've raised from some of the most well-known operators in fintech & payments to shape how agents interact with the economy, from scratch.
https://natural.co if you'd like to learn more - email krish@natural.co if interested!
Relevant builds a data platform that helps safety-net healthcare providers deliver better care using data from their electronic health records. Our customers are non-profit clinics called Community Health Centers. You can read more about them, us, and the roles on our jobs page: https://relevant.healthcare/jobs/
We're a small team (~25 overall). We're bootstrapped (no external capital whatsoever, VC or otherwise) and profitable. We've got a modern tech stack (Rails, Typescript, React, GraphQL, d3) and a healthy approach to both tech debt and work/life balance… and we’re also a very nice group of people that get to work on interesting problems for some of the few unimpeachably good actors in healthcare!
Scholarly is building the HR operating system for higher education. We've built a software platform that enables our customers to make data-driven decisions and to automate essential processes like performance reviews, tenure processes, leave workflows, and more. We are a venture-backed seed stage company of experienced, motivated, and collaborative folks. We are backed by leading investors in the industry and working with some of the best universities in the US. The team comes from Gusto, NASA JPL, Amazon, Outreach, and others.
We're looking for a full-stack candidate with 8 or more years of experience building web applications. We write Ruby and Rails, but we are considering candidates with other stack experiences. Engineering is based in Seattle and on site in Pioneer Square. Looking to get back to a collaborative, in-office culture post-COVID? Let's chat.
If interested, please apply here: https://jobs.ashbyhq.com/Scholarly/d4c84468-fd4b-4dd7-9b22-2...
We're building the operating system for the digital infrastructure of government. Authorium is a GovTech SaaS platform that unifies the messy, high-stakes workflows (procurement, grants, budgeting) that keep state and local governments running. We replace fragmented docs, spreadsheets and decades-old legacy systems with a unified data layer managing billions in public funds. Customers include California's CDSS, CalPERS, and EDD, plus major agencies in NY, Florida and Washington.
We're >40 people, growing 45% YoY, with a clear path to profitability in 2026. Real product-market fit, scale, and impact.
We're standing up our SF office as the war room for our hardest problems: modularizing our core domain, designing the next-gen workflow engine, building versioning and approval systems that hold up across dozens of customer configurations. You'd whiteboard, debug, and ship in person alongside a high-caliber team.
Stack: Ruby on Rails BE, Hotwire and Next.js FE, enterprise form and document capabilities. We're leveraging AI in our development process: Claude Code for specs, agentic testing, automated reviews.
Two roles open:
- Full-Stack Engineer (3+ yrs) | $148,750-$201,250 + equity | https://jobs.ashbyhq.com/Authorium/b59ff28c-3e3c-4190-abaa-a... - Senior Full-Stack Engineer (6+ yrs) | $170,000-$230,000 + equity | https://jobs.ashbyhq.com/Authorium/dc83e0dd-9279-4381-9930-f...
Both value deep fundamentals (system design, database optimization, clean architecture) over specific syntax. Bonus for Rails, document-heavy systems, or regulated-industry experience (GovTech, FinTech, HealthTech).
Benefits: 100% employee coverage, 401(k), flexible PTO, home office + commuter stipend.
Apply at the links above (mention Hacker News). I'm Jay, co-founder and xCIO of City of SF. Happy to connect directly if you have questions, just reply here or reach out jay@authorium.com
Scribd, Inc. is on a mission to advance human understanding. Our four products — Scribd®, Slideshare®, Everand™, and Fable — help billions of people across the globe move beyond access and into insight, application, and expertise. We're a YC '06 company — one of the oldest still around — running one of the largest Ruby on Rails sites, serving 200M+ unique visitors a month with 2M+ paying subscribers.
I'm hiring a PM to own our *AI Developer Platform* — the internal product 200+ engineers build on every day. The platform spans the full agentic stack: the tools in each engineer's hands (Claude Code), a plugin marketplace and a library of skills that extend them, an internal app platform and agent runtime that teams build on, and the evals, canonical context, and conventions that make agents reliable across a polyglot codebase (Ruby, Go, TypeScript, Python; AWS/Databricks). You'll own the product strategy for developer experience and how we measure it, partnering directly with the Developer Platform and Data Platform engineering teams who build the underlying capabilities.
We're looking for a highly technical PM — quite possibly a former engineer — who is genuinely passionate about how developer platforms are evolving in the age of AI. You've shipped real products with modern agentic primitives (agents, evals, tool use, MCP, plugins/skills), and you can hold your own with engineers in technical discussions. This is the first PM seat at Scribd pointed inward, in a brand-new domain with no playbook to inherit. Reports to me (Director, Developer Platform).
Friendly, people-first, engineering-driven culture with competitive salary, great benefits, and real work-life balance.
Apply: https://jobs.ashbyhq.com/ScribdInc/ff2680ea-9a6d-436d-bdb0-3... — or email me directly at cktaylor at scribd.com (I've hired off these threads before). Recruiters/agencies, please don't.
You may know us from our open-source roots (Fluentd/Embulk.) We’re an enterprise CDP and agentic experience platform that unifies fragmented customer data from multiple sources and allows for complex marketing workflows. Our engineering team is distributed across Canada, Japan, and the USA.
We need three Staff Engineers (two in Tokyo, one in Vancouver) to act as technical anchors. You’ll be a great fit if you’re a backend/distributed systems engineer who can architect a clean React frontend, or a pure distributed systems specialist happy to collaborate across the full stack.
The roles primarily deal with architecting systems to process and personalize massive marketing datasets in near real time, with a strong emphasis on being able to work cross functionally to deliver best-in-class agentic interactions deeply integrated with our systems.
Our core stack is Rails, Typescript/Lambda, React, and Kotlin.
How to apply:
* Staff Fullstack (Tokyo) https://jobs.treasure.ai/jobs/542524-staff-fullstack-enginee...
* Staff Fullstack (Vancouver) https://jobs.treasure.ai/jobs/615459-staff-fullstack-enginee...
* More roles on our careers page (we are massively hiring): https://jobs.treasure.ai/
When you look at the headers of major websites, you’ll see us. If it has to be performant, secure, scaled worldwide, and always-on, it uses Fastly.
We're a globally edge cloud platform for performance and security, emphasizing open standards, sustainable engineering, and resilience-by-design.
We're hiring across compute, security, platform engineering, network and edge protocols, release engineering, network architecture, client services engineering, and more.
Rather than building walled gardens, we co-founded the Bytecode Alliance, heavily upstream our work to open standards, actively author IETF drafts, and power the global infrastructure for open-source Python, Rust, Ruby, OpenStreetMap, and much more.
The Stack: Rust, C/C++, Go, Javascript, Typescript, WebAssembly (Wasm/WASI), Wasmtime, Cranelift, eBPF/XDP, QUIC, HTTP, TLS, TCP, Varnish/VCL, Linux kernel internals, distributed systems, professional services.