Proof is a digital trust platform. We do online notarizations, e-sign, KYC, identity network, PKI. Defend team is building advanced fraud detection and prevention service for use across the platform. Proof is a 10 year mid-size startup with solid history, collaborative culture, hundreds of customers and millions of users across all verticals.
Stack: Ruby on Rails, React, GraphQL, AWS
https://jobs.lever.co/proof/ee82bcf8-d3c6-4740-8a9e-bd1e5dc9...
Clerq is a NYC based fintech startup building the next generation platform payments platform delivers a seamless checkout experience for high-ticket transactions. By leveraging modern bank rails, the platform offers the conversion and UX benefits of cards with risk and money movement infrastructure purpose-built for large purchases. Clerq replaces outdated manual payment methods like cash, checks and wires and expensive card surcharges with a smooth, integrated solution that helps merchants convert more customers without sacrificing margins.
We have started with the $1T+ U.S. auto vertical, where our platform is already powering payments for several of the most recognized brands in the industry. With proven traction, the company has expanded into high-growth adjacencies including high-ticket e-commerce, private travel and powersports.
We are a lean team right now of 3 engineers so are looking for a senior or staff level engineer who is excited by big opportunities and eager to ship.
Stack: Python/Django, React, Nodejs, AWS Comp: $180-210k + Equity
Email me at nick@clerq.io if you are interested in hearing more!
Since 2014, we have been building the leading Subscription Analytics Platform for growing SaaS businesses and CRM purpose-built for B2B SaaS teams. We're a remote-first company with 62 team members across 23 different countries. Profitable and self-sustaining since our seed funding.
What we accomplished in 2024: https://chartmogul.com/blog/chartmogul-2024-year-in-review/
Tech Stack: Ruby, Ruby on Rails, Vue.js, Typescript, Postgres, AWS
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Sr Full Stack Engineer: https://jobs.chartmogul.com/o/senior-full-stack-engineer-del...
We're building Found so self-employed people have the support, structure, and confidence to work for themselves. Our founding team has hands-on experience with taxes and accounting, financial services and FinTech, self-employment, and scaling startups. Our team is dedicated to taking care of business banking, expense tracking, and tax saving so self-employed people have more time to do what they do best. We raised our Series C from Sequoia, Khosla Ventures, Lightspeed, and Founders Fund, and today we are expanding and scaling a product experience that tens of thousands of Found customers use to run their businesses.
Tech Stack Includes: Rails, Kubernetes, React, MySQL, Typescript, Spanner
Benefits Include: Paid medical/dental/vision, parental leave, unlimited PTO.
Hiring for Sr Fullstack Engineers, Reliability Engineers, Platform Engineers, Eng Managers. Apply here: https://found.com/careers/
(I'm the CTO and you can find me here: https://www.linkedin.com/in/aabhassharma/ or https://twitter.com/shars17)
Chronograph was founded to bring next-generation technology to private capital markets. Through our suite of cloud-based analytics and data management solutions, we help many of the world’s largest and most sophisticated venture capital, private equity, and credit funds understand their investment performance in unprecedented detail.
We are looking for a candidate with a generalist background in software development, including 3-5+ years of experience on DevOps, Platform Engineering, Site Reliability Engineering (SRE), or MLOps teams. You’d be joining a small cross-functional team and have the chance to make critical contributions as we scale our engineering team and business.
Our ideal candidate has a passion for automating ops, troubleshooting infrastructure, and creating first-class developer experiences. On top of that, expertise with the following (or similar) tools/technologies is a strong signal of fit: Kubernetes, Prometheus, Grafana, Terraform, AWS, GitHub Actions, PostgreSQL, Node.js, Ruby on Rails, Nix, and Docker.
Note that while this is a remote position, travel to our NYC HQ 3x/year for "team week” on-sites is required.
If interested, apply here: https://grnh.se/1q1yybxf7us
Love building a product that improves a user’s life so much that they can’t help but share it with their peers?
Boost My School is on a mission to help schools fund brighter student futures. Our platform is trusted by 200+ K-12 schools to modernize their fundraising, events, and auctions.
Why work at Boost?
1. We make meaningful impact helping schools and students
2. We win as part of a thoughtful and collaborative team
3. We embrace ownership over our work, growth, and time
For full job details and instructions on how to apply: https://boostmyschool.com/careers#senior-software-engineer
Leadership team you'll be working with:
- CEO, coded first version of product (https://www.linkedin.com/in/holman-gao)
- Head of Product, ex Apple, Flexport, Stanford CS (https://www.linkedin.com/in/nathaniel-okun)
Tags: edtech, fintech, social impact, mission-driven
Stack: Ruby, Rails, React, GraphQL, Typescript
Comity is on a mission to improve the reliability, transparency, and efficiency of our energy systems, fostering a future with sustainable and abundant energy. Our team is leveraging statistical learning and convex optimization methods to build the financial rails of our future energy systems that will accelerate the deployment of clean energy resources.
You can read the full JDs and apply here: https://jobs.ashbyhq.com/comity
Questions? Reach out to andres@comity.ai
IP Copilot is an AI platform that discovers patentable innovations in real time and streamlines the patent process for enterprises, universities, and law firms. Fresh off a September 2024 seed round, our nine-person, fully-remote team (ex-researchers with 1,000+ patents and multiple enterprise launches) is hiring a back-end engineer to own integrations into our Python/Ruby API and third-party services, harden our AWS/PostgreSQL infrastructure, and ship features that automate patent workflows. You’ll collaborate with ML, design, and business teammates, meet power users, set the roadmap, and build thoroughly tested, monitored services—all while wearing the many hats that come with an early-stage startup.
Perks: excellent health/dental/mental-health coverage, equity, competitive salary, unlimited vacation, mentorship, and real ownership.
Apply via email: jeremy . goodsitt - at - ipcopilot.ai
SerpApi is the leading API to scrape and parse search engine results. We deeply support Google, Google Maps, Google Images, Bing, Baidu, and a lot more.
Our current stack is Ruby, Rails, MongoDB, and React.JS. We are looking for more Junior and Senior FullStack Engineers.
We have an awesome work environment: We are a remote first company (before Covid!). We do continuous integration, continuous deployments, code reviews, code pairings, profit sharing, and most of communication is async via GitHub.
We value super strongly transparency, do open books, have a public roadmap, and contribute to the EFF.
Apply at: https://serpapi.com/careers
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We’re StackBlitz!
We’re the team behind WebContainers, the groundbreaking technology that made it possible to run Node.js right in your browser. No installs, no setup, just instant dev environments. That innovation kickstarted our journey in 2019 and powers the blazing-fast online IDE used by over a million developers every month.
But we didn’t stop there.
We took everything we learned from building WebContainers and used it to create Bolt.new. The fastest way to go from idea to production without writing traditional code. Think of it as the Canva or Figma for full-stack applications: a next-gen, AI-powered builder that lets you create, edit, and deploy web and mobile apps instantly, right in your browser.
WebContainers make it possible. Bolt.new brings it to life. Together, they reimagine what it means to build software lowering the barrier to entry, speeding up workflows, and unlocking creativity for the next generation of builders.
We’re a globally distributed, fully remote team of passionate engineers, designers, and creatives building the future of software development. If you love shipping fast, solving real problems, and pushing the boundaries of what’s possible we’d love to meet you.
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We're currently looking for:
- Events Lead (B2B + B2C Focus)
- Customer Experience Engineer
- Full Stack Engineer
- Senior Applied AI Engineer
- Senior Front-End Engineer (UI/UX)
- Senior Software Engineer - Rails
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If you are interested please apply at: https://stackblitz.com/careers
Yuma is building a complete orchestration platform that deploys autonomous AI agents dedicated to customer support in e-commerce. We are one of the leaders in this space and we offer one of the most advanced platforms to date, supporting over 100 paying customers. Our agents replicate human capabilities by taking actions and retrieving information from external services as needed.
Our top merchants automate over 80% of their support tickets through Yuma.
Yuma was founded by Guillaume Luccisano, a 3rd time YC founder, and now boasts a team of 18 highly dedicated, talented people driven to deliver the best value to our customers through AI.
Learn more & apply here: https://yuma.ai/work-at-yuma
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.
We're looking for a junior- to mid-level full-stack candidate without about 5 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 collaborate, in-office culture post-COVID? Let's chat.
If interested, please apply here: https://scholarly.breezy.hr/p/f3bc050f524d-software-engineer
OneSignal is building the best platform for businesses to intelligently engage with customers across every channel. We provide a simple interface to push notifications, email, and in-app messages, letting content creators focus on quality user engagement instead of complex implementation.
We're hiring Senior Software Engineers for our Product, SDK, and Backend teams.
More information and apply at https://onesignal.com/careers
Aha! is the #1 tool for product managers to plan strategy and roadmaps. We serve more than 700,000 users worldwide. We are looking for:
* Experienced full-stack Rails and security engineers to work on the Aha! product. Our application is built in Ruby on Rails, with React on the frontend for rich client-side experiences.
* Devops engineers with Ruby experience. We focus on the "dev" and all of our operations driven by code.
Aha! is profitable, you can work from anywhere in North or South America, and we offer excellent benefits. We use our own product to manage our work (which is especially rewarding) and we deploy continuously.
Our entire team has always been 100% remote - in North American timezones so we can collaborate during the work day.
About Fathom: • YC W'21, raised Series A this summer, ~70 employees • Growing 10-20% every month (ARR + Usage) • 82 NPS, #1 app on both G2 + Zoom marketplace, 10k+ installs on HubSpot marketplace
Team makeup + culture: • Low ego, high integrity, highly collaborative, hard working • Senior team (10 eng), many have worked together at previous companies • Remote but synchronous. Multiple team offsites per year
This IS for you if: • You want to work on a product people love • You like highly talented, experienced coworkers • You prefer working hard and making pragmatic decisions that keep the team shipping quickly
This is NOT for you if: • You want rest & vest • Sprint planning is your favorite • You being right is more important than the team being right
If interested, apply for roles here. Mention you’ve come from HN in the application!
- App team / Rails+typescript: Hiring for Senior Fullstack Engineers
- Platform team / Go+K8s: Hiring for Senior Backend, Infrastructure, Engineering Managers
See all open roles here: https://jobs.ashbyhq.com/fathom.video
We are the world's largest library of bike routes, and we enable cyclists to go on better rides, more often. We have a website and mobile apps that allow people to discover the best riding in their area, and get turn by turn navigation using either our mobile apps or the bike computer of their choosing. Come join us in taking Ride with GPS to the next level! We have two openings right now, and are starting to build out the hiring plan for a third:
Senior Software Engineer - API & Product Development: We are looking for an experienced backend engineer to join our small and effective engineering team with a focus on supporting web and mobile app development using our APIs. The right candidate for this role brings extensive experience supporting modern product development, in collaboration with frontend and mobile developers, product management, and design. This requires excellent communication and collaboration skills, both on the engineering side, and from a product perspective. We use rails, but prior rails experience is not required.
Details, and application process available here: https://ridewithgps.com/careers/2025-senior-software-enginee...
Senior Software Engineer - API Development: We are looking for an experienced backend engineer to join our small and effective team with a focus on our APIs and supporting our platform at scale. This doesn't mean you are isolated from product development &emdash; everything we do serves our users in some way, and being a small team we regularly share responsibilities. However, this role will spend more time on efficiency and system design rather than delivering this quarter's new features. The right candidate should have a depth of experience supporting a large API surface area with efficient, well organized code, and should be excited about maintaining and improving performance over time. Experience with developer tooling, database design, query optimization, and DevOps workflows will serve you well in this role. We use rails, but prior rails experience is not required.
Details, and application process available here: https://ridewithgps.com/careers/2025-senior-software-enginee...
Senior Software Engineer - iOS Development: In mid July, we will officially start the hiring process for an iOS developer, and potentially another Android engineer. We are reviewing applications for qualified candidates at this time, and will officially post the job by July 15th. If you think you are an excellent fit please apply now, however there might be some delays in screening, interviewing, etc while we finalize our hiring plan. We have a technically interesting, battery efficient set of mobile apps that act as a companion to our website, and need another iOS or Android engineer to help us take our apps to the next level.
Draft job position and application process available here: https://ridewithgps.com/careers/job_postings/2025-ios-engine...
Long Angle, a peer network for high-net-worth individuals is looking for a Ruby-on-Rails engineer and a frontend engineer (React / React Native). Come work on a wide range of problems in a modern codebase, in a fully remote environment.
Ruby-on-Rails position: https://app.dover.com/apply/Long%20Angle/e3eade1b-9451-4e2a-...
Frontend position: https://app.dover.com/apply/Long%20Angle/1083a282-58a7-4569-...
Other non-SWE positions: https://www.longangle.com/careers