Top all-time · #875
Semaphore
Company blog · semaphoreci.com/blogprogrammingweb
Semaphore is the company blog at semaphoreci.com, writing about programming and web. Since 2015, 73 different Hacker News readers have linked it 249 times, most often “Python Versions Used in Commercial Projects, 2016 Edition”. It is still writing: the last post was on 2026-10-09, and you can follow it by feed.
Rarely recommended · 3 of 33 sampled comments recommend it?
Why HN links it
HN readers link Semaphore's engineering blog and community tutorials for guides on Python testing, Rails performance, and Docker. Most HN mentions of Semaphore are job postings and product talk.
Summarised by Claude from a sample of 33 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
Semaphore CI built for coding agents - fast, affordable, and enterprise-ready.
Most-linked posts?
- /4 people · 10 mentions · first linked 2016-06-02
- Python Versions Used in Commercial Projects, 2016 Edition3 people · 4 mentions · first linked 2016-11-11
- Dockerizing a Python Django Web Application3 people · 3 mentions · first linked 2016-09-07
- The Secret Art of Storytelling in Programming2 people · 3 mentions · first linked 2022-10-21
- /2 people · 2 mentions · first linked 2017-01-26
- What is monorepo and should you use it?2 people · 2 mentions · first linked 2021-05-08
- Node.js Version Usage in Commercial Projects2 people · 2 mentions · first linked 2015-12-16
- Semaphore Is Going Open Source2 people · 2 mentions · first linked 2025-01-30
- How to Capture All Errors Returned by a Function Call in Elixir2 people · 2 mentions · first linked 2016-11-24
- Writing and Testing an Event Sourcing Microservice with Kafka and Go2 people · 2 mentions · first linked 2017-05-10
What Hacker News says?
As others have stated you could run your own registry or use an alternative service for private repositories, to minimise or eliminate the attack vector. By replicating the images (or packages) that you need into your own account, you can minimise the possibility of a bad actor replacing a well-known image with something untrusted. An alternative is to side-cart a service like Notary ( https://docs.docker.com/notary…
Comment linking /
on “Docker Hub Hacked – 190k accounts, GitHub tokens revoked, builds disabled”Submitted Will Bun JavaScript Take Node's Crown as a story · 298 points
HN discussionSemaphore CI | Europe +-4h | Full-time | REMOTE Looking for DevOps engineers ready to advance their craft by working on a product that's at the core of modern dev workflow. We’re on a mission to change how developers test and deliver software. Our way is to double down on great user experience and high performance, treat our customers as we’d like to be treated, and make continuous delivery practices more accessible…
Comment linking /
on “Ask HN: Who is hiring? (June 2016)”Submitted How to Improve Your Monolith Before Transitioning to Microservices as a story · 235 points
HN discussionSemaphore | https://semaphoreci.com | Engineering and Design | REMOTE | Full-time We're currently hiring a DevOps Engineer (for the Semaphore CI/CD platform), Product Designer and Senior Rails Developer — see https://semaphoreci.com/about/careers . At Semaphore, we're on a mission to help developers move faster. Our way is to double down on great user experience and high performance, treat our customers as we’d like…
Comment linking /about/careers
on “Ask HN: Who is hiring? (November 2017)”Submitted Python Versions Used in Commercial Projects, 2016 Edition as a story · 160 points
HN discussionSemaphore | Engineering and Non-Engineering Roles | Remote | Full-time | https://semaphoreci.com/about/careers We're currently hiring a Technical Writer, Technical Support Engineer, React Developer and DevOps Engineer; see https://semaphoreci.com/about/careers . At Semaphore, we're on a mission to help developers move faster. Our way is to double down on great user experience and high performance, treat our customer…
Comment linking /about/careers
on “Ask HN: Who is hiring? (March 2018)”Submitted Speeding Up Rendering Rails Pages with render_async as a story · 127 points
HN discussionA few years back I wrote a blogpost showcasing a nice use-case for RabbitMQ and Elixir https://semaphoreci.com/blog/2017/03/07/making-mailing-micro...
Comment linking /blog/2017/03/07/making-mailing-microservice-with-elixir-and-rabbitmq.html
on “An introduction to RabbitMQ”Submitted The Cracking Monolith: Forces That Call for Microservices as a story · 107 points
HN discussionSemaphore CI | Europe | Full-time | REMOTE We’re on a mission to make software delivery awesome. Our way is to double down on great user experience and high performance, treat our customers as we’d like to be treated, and make continuous delivery practices more accessible. CoreOS, 500px, Lexmark, General Assembly and many others use Semaphore ( https://semaphoreci.com ). We’re hiring: DevOps engineers: https://rende…
Comment linking /
on “Ask HN: Who is hiring? (July 2016)”Submitted Dockerizing a Ruby on Rails Application as a story · 84 points
HN discussionSemaphore CI | Europe +-4h | Full-time | REMOTE Looking for senior software engineers into Ruby, Elixir, microservices and high scalability. You’ll be in good company: less than 10 engineers made Semaphore a bootstrapped and profitable CI/CD product used by CoreOS, 500px, Lexmark, General Assembly and many others ( https://semaphoreci.com/about ). Our way is to double down on great user experience and high performan…
Comment linking /about
on “Ask HN: Who is hiring? (March 2016)”Submitted What Is Proper Continuous Integration? as a story · 73 points
HN discussionI wouldn't mind trying out Semaphore for some open source projects. On the community open source page [1], from what I understand, you offer a free service, but the pricing page [2] says that it's not free yet? [1]: https://semaphoreci.com/community/open-source [2]: https://semaphoreci.com/pricing
Comment linking /pricing
on “Travis CI acquired by Idera”Submitted Htmx vs. React: A Complete Comparison – Semaphore as a story · 59 points
HN discussionSemaphore CI/CD | Technical Editor | REMOTE | Full-time | https://semaphoreci.com Semaphore is looking for someone who is passionate about helping software engineers write and share their knowledge with the community. The ideal candidate has a hybrid background in software development and writing/editing. Learn more and apply at https://apply.workable.com/semaphore/j/17003BBCA0/
Comment linking /
on “Ask HN: Who is hiring? (October 2020)”Submitted Test-Driven Development of Go Web Applications with Gin as a story · 31 points
HN discussionSemaphore CI/CD | Senior Engineer | Full-time | Remote https://semaphoreci.com Semaphore helps developers ship great products at high velocity. We're a bootstrapped remote company, you'll be working with a high-performance international team and have a real impact. https://semaphore.workable.com/j/7899071CEA
Comment linking /
on “Ask HN: Who is hiring? (June 2019)”Submitted Tips to Write Better Posts for Developers as a story · 16 points
HN discussionSemaphore | Full-Time | Remote | https://semaphoreci.com Build an industry-defining product with a great team. Semaphore is a leading CI/CD platform for testing and deploying code. Our customers are companies across more than 100 countries, from tech industry heavyweights to startups just about to make their dent in the universe. They all need their products to move as fast as possible — and Semaphore enables them t…
Comment linking /about
on “Ask HN: Who is hiring? (June 2021)”Submitted Getting Started with SSH as a story · 15 points
HN discussionVisual tests are more general, and are more akin to putting up barriers on either side of a bowling lane so the bowling ball stays within it's lane (with room to move about still). For example when using Angular, you write 'Page Objects' that have methods such as .getTitle(), .clickListItem(3) and so on, and can then write assertions to make sure the UI changes as expected by inspecting properties [1]. I usually fin…
Comment linking /community/tutorials/using-page-objects-with-protractor-and-cucumber-in-angular-applications
on “Write tests. Not too many. Mostly integration”Submitted Rails Techniques: Using Polymorphic Associations as a story · 14 points
HN discussionSemaphore | Software Engineers, Linux System Admins | Full-time | Remote (European time zones) | https://semaphoreci.com Do you want to help build the world's best CI/CD product? Join us https://apply.workable.com/semaphore/
Comment linking /
on “Ask HN: Who is hiring? (March 2021)”Submitted 7 Ways Continuous Delivery Helps Build a Culture of Learning as a story · 13 points
HN discussionSemaphore CI | Europe | Full-time | REMOTE Looking for senior software engineers into Ruby, Elixir, microservices and high scalability. We’re on a mission to change how developers test and deliver software. Our way is to double down on great user experience and high performance, treat our customers as we’d like to be treated, and make continuous delivery practices more accessible to developers. CoreOS, 500px, Lexmar…
Comment linking /about
on “Ask HN: Who is hiring? (January 2016)”Submitted [eBook] Rails Testing Handbook: A Free Ebook to Help You Build Better Apps as a story · 12 points
HN discussionSemaphore | Remote | World-wide | https://semaphoreci.com Semaphore is a leader in cloud-based CI/CD, with over 50,000 developers relying on it to test and deploy their code. Our mission is to help product teams ship their software faster and with more confidence by providing a robust and scalable platform for software delivery. We're hiring Software Engineers (junior to senior), UX/UI Designers, Technical Writers,…
Comment linking /
on “Ask HN: Who is hiring? (March 2022)”Submitted Python 3 is now used in 36% commercial projects as a story · 12 points
HN discussion
