zinxq

We have tried both trials with and without CC - the latter is obviously more effective.

On the back-end however, this forced us to spend weeks developing an intelligent automated approval process to limit abuse (which is common).

After that, monitoring systems alert humans to suspicious trial activity for further review. So it continues to be a lot of work.

Financially, we love the idea of a true "free" trial. The abuse was the challenge but we're in a good place with it now. Customers/Potential-customers love it and so do we.

If I were a devops engineer, I'd always push for a migration to Kubernetes. That's job security.

Mailinator does this (you can get a private SMS to API)

I've always considered message-queues as a close cousin (if not sibling) of databases. Arguably performing the same function with different foci. Pub/sub focusing on the "oplog". DBMS focusing on "state".

(Blockchain another "oplog" that ends up caring a lot about state eventually).

It's no wonder you can use them interchangeably in many common base cases.

As a data point.. Mailinator lets you point ANY domain to it (for free). Email sent there will go into the public Mailinator system.

https://mailinator.blogspot.com/2008/01/your-own-private-mai...

In the few times I've read (or started to read) one of Gladwell's books I always think "This book would make a great article".

Answer is of course, "Depends" - but 50% is perfectly possible.

http://paultyma.blogspot.com/2016/06/how-to-get-hired-as-tec...

Lending Tree, Inc. | Software Engineers | Burlingame, CA | ONSITE | https://www.lendingtree.com

Email us at: jobs@lendingtree.com

Must be local or willing to relocate

Who we are:

LendingTree, Inc. empowers consumers with information, tools, advice, products and services for critical transactions and financial decisions in their lives.

Specifically - We're looking for:

Full-stack Developers:

We're looking for Junior and Senior Engineers at every level up and down the stack. No matter where you fit - you're a crack-shot in your language of choice. Our system matches users with hundreds of possible opportunities in real-time. We're looking for people who care about performance. A lot. Our stack is currently Java, Javascript, Redis, Mongo, SQLServer (and more) but the exact technologies are less important than the architectures and designs you bring to the table.

You love to code. You've built stuff. Stuff you can show us. Stuff you can't wait to show us. You know the right technology implemented the right way matters.

Will relocate to the Bay Area for the right candidates.

Send your resume to jobs@lendingtree.com

​Lending Tree, Inc. | Software Engineers | Burlingame, CA | ONSITE | https://www.lendingtree.com

Email us at: jobs@lendingtree.com

Must be local or willing to relocate

Who we are:

LendingTree, Inc. empowers consumers with information, tools, advice, products and services for critical transactions and financial decisions in their lives.

Specifically - We're looking for:

Full-stack Developers:

We're looking for Junior and Senior Engineers at every level up and down the stack. No matter where you fit - you're a crackshot in your language of choice. Our system matches users with hundreds of possible opportunities in real-time. We're looking for people who care about performance. A lot. Our stack is currently Java, Javascript, Redis, Mongo, SQLServer (and more) but the exact technologies are less important than the architectures and designs you bring to the table.

You love to code. You've built stuff. Stuff you can show us. Stuff you can't wait to show us. You know the right technology implemented the right way matters.

Will relocate to the Bay Area for the right candidates.

Send your resume to jobs@lendingtree.com

Indeed. I thought about a blog post how to configure haproxy to proxy SMTP to mailinator and stay undetectable.

But Mailinator's use case has morphed over the years. It's now used as a tool for QA and UAT testing now a great deal. That use case has spawned private domains and API access.

Same thought process goes toward services that wish to ban it, if they really want to, that's their business.

(You can of course sign-up for a Mailinator account using a Mailinator email)

import javax.websocket.MessageHandler;

Stayed away from frameworks. Mailinator suffers from "do it yourself" syndrome where I wanted write most things myself for the educational value. No Spring, no web frameworks, straight servlets. Custom SMTP server.

(It does use Redis pub/sub but I did write my own first, Redis was just too easy not to rely on)

Surprised to see this here now after 11 years.

Needless to say, this is incredibly out of date. Mailinator now runs across several servers with a real-time websocket system tied to Redis channels for incoming emails. The multiple server system is more for fault-tolerance than scaling issues.

The Websocket-to-redis connection allows incoming emails to be available the instant they arrive (fully) at Mailinator. Instantly - no polling front-end or otherwise. Public email storage is still in-memory with a system that chunks emails into common parts and reuses them. A reference counting garbage collector cleans them up once no email in the system is still using that part. I tried compression a million different ways but nothing beat reusing parts of emails.

http://mailinator.blogspot.com/2012/02/how-mailinator-compre...

The 2007 article is a valid picture of things then, but the system has come a long, long way since that time.

Lending Tree, Inc. | Software/QA/DevOps Engineer | Burlingame,CA & Charlotte, NC | ONSITE

https://www.lendingtree.com Email us at: jobs@lendingtree.com

Our Tech Stack: C#, Java, .NET core, Docker, Linux, Javascript, Mongo, SQL Server, Kafka, Spark

Who we are: LendingTree, Inc. empowers consumers with information, tools, advice, products and services for critical transactions and financial decisions in their lives.

Specifically - We're looking for:

Dev-ops Engineers: We are in the midst of migrating our primary infrastructure to Kubernetes, .NET core, docker, linux, windows, mongo, kafka, and other cutting edge technologies. We're looking for serious dev-ops engineers to join our team.

Back-end Engineers: You're a crack-shot in your back-end language of choice. Our system matches users with hundreds of possible opportunities in real-time. Needless to say, we're looking for people who care about performance. A lot. Our back-end systems are written in C#, Java, Redis, Mongo, and SQLServer. You might know C# or Java or you might not, but either way you're willing to learn. If you're a Senior Engineer - you've worked in server-side code for a few years. You've scaled to thousands or maybe millions of users. If you're a Junior engineer, you love to code and you're good at it. You're smart, you're passionate, and most of all you can't wait to get started. (New grads please apply!)

QA Engineers: We're writing software - and fast. We running hundreds of tests on every check-in and we need more. TestNG, Selenium, and testing intuition guides our tests. If you love making sure things are working right - email us !

Front-end Engineers: You know Javascript. You know the ins, the outs and how to make it blazing fast. You care about performance because you know your users are waiting for every line of your code. You've used some popular frameworks, maybe angular or react - but you know one or more cold.

Where we are:

Burlingame, CA: Just south of San Francisco right on Burlingame Ave.

Charlotte, NC: If you're looking for a 30% cheaper cost of living than San Francisco with a fantastic quality of life, this is it.

Lending Tree, Inc. | Software/QA/DevOps Engineer | Burlingame,CA & Charlotte, NC | ONSITE

https://www.lendingtree.com Email us at: jobs@lendingtree.com

Our Tech Stack: C#, Java, .NET core, Docker, Linux, Javascript, Mongo, SQL Server, Kafka, Spark

Who we are: LendingTree, Inc. empowers consumers with information, tools, advice, products and services for critical transactions and financial decisions in their lives.

Specifically - We're looking for:

Dev-ops Engineers: We are in the midst of migrating our primary infrastructure to Kubernetes, .NET core, docker, linux, mongo, kafka, and other cutting edge technologies. We're looking for serious dev-ops engineers to join our team.

Back-end Engineers: You're a crack-shot in your back-end language of choice. Our system matches users with hundreds of possible opportunities in real-time. Needless to say, we're looking for people who care about performance. A lot. Our back-end systems are written in C#, Java, Redis, Mongo, and SQLServer. You might know C# or Java or you might not, but either way you're willing to learn. If you're a Senior Engineer - you've worked in server-side code for a few years. You've scaled to thousands or maybe millions of users. If you're a Junior engineer, you love to code and you're good at it. You're smart, you're passionate, and most of all you can't wait to get started. (New grads please apply!)

QA Engineers: We're writing software - and fast. We running hundreds of tests on every check-in and we need more. TestNG, Selenium, and testing intuition guides our tests. If you love making sure things are working right - email us !

Front-end Engineers: You know Javascript. You know the ins, the outs and how to make it blazing fast. You care about performance because you know your users are waiting for every line of your code. You've used some popular frameworks, maybe angular or react - but you know one or more cold.

Where we are:

Burlingame, CA: Just south of San Francisco right on Burlingame Ave.

Charlotte, NC: This is our headquarters. If you're looking for a 30% cheaper cost of living than San Francisco with a fantastic quality of life, this is it.

Why can mobile providers be still so easily social engineered to this day? Seems like calling them and activating a new SIM (i.e. stealing a number) is still quite easy.

Can you give an idea of the multiples of X (i.e. revenue, Ebitda, etc) that you did consider? You mentioned 6x(monthly-revenue) was bad. But can you discuss the spectrum of what looked good/interesting?

(not asking $$$ .. just multiples that were presented)

Lending Tree, Inc. | Software/QA/Devops Engineer | Burlingame, Charlotte | ONSITE

https://www.lendingtree.com Email us at: jobs@lendingtree.com

Our Tech Stack: C#, Java, .NET core, Docker, Linux, Javascript, Mongo, SQL Server, Kafka, Spark

Who we are: LendingTree, Inc. empowers consumers with information, tools, advice, products and services for critical transactions and financial decisions in their lives.

Specifically - We're looking for:

Dev-ops Engineers: We are in the midst of migrating our primary infrastructure to Kubernetes, .NET core, docker, linux, mongo, kafka, and other cutting edge technologies. We're looking for serious dev-ops engineers to join our team.

Back-end Engineers: You're a crack-shot in your back-end language of choice. Our system matches users with hundreds of possible opportunities in real-time. Needless to say, we're looking for people who care about performance. A lot. Our back-end systems are written in C#, Java, Redis, Mongo, and SQLServer. You might know C# or Java or you might not, but either way you're willing to learn. Regardless, you can impress us in your language of choice. If you're a Senior Engineer - you've worked in server-side code for a few years. You've scaled to thousands or maybe millions of users. If you're a Junior engineer, you love to code and you're good at it. You're smart, you're passionate, and most of all you can't wait to get started. (New grads please apply!)

Front-end Engineers: You know Javascript. You know the ins, the outs and how to make it blazing fast. You care about performance because you know your users are waiting for every line of your code. You've used some popular frameworks, maybe angular or react - but you know one or more cold.

Where we are:

Burlingame, CA: Just south of San Francisco right on Burlingame Ave.

Charlotte, NC: This is our headquarters. If you're looking for a 30% cheaper cost of living than San Francisco with a fantastic quality of life, this is it.

Lending Tree, Inc. | Software/QA/Devops Engineer | Burlingame, Charlotte, Chicago | ONSITE

https://www.lendingtree.com Email us at: jobs@lendingtree.com

Our Tech Stack: C#, Java, .NET core, Docker, Linux, Javascript, Mongo, SQL Server, Kafka, Spark

Who we are: LendingTree, Inc. empowers consumers with information, tools, advice, products and services for critical transactions and financial decisions in their lives.

Specifically - We're looking for:

Dev-ops Engineers: We are in the midst of migrating our primary infrastructure to Kubernetes, .NET core, docker, linux, mongo, kafka, and other cutting edge technologies. We're looking for serious dev-ops engineers to join our team.

Back-end Engineers: You're a crack-shot in your back-end language of choice. Our system matches users with hundreds of possible opportunities in real-time. Needless to say, we're looking for people who care about performance. A lot. Our back-end systems are written in C#, Java, Redis, Mongo, and SQLServer. You might know C# or Java or you might not, but either way you're willing to learn. Regardless, you can impress us in your language of choice. If you're a Senior Engineer - you've worked in server-side code for a few years. You've scaled to thousands or maybe millions of users. If you're a Junior engineer, you love to code and you're good at it. You're smart, you're passionate, and most of all you can't wait to get started. (New grads please apply!)

QA Engineers: We're writing software - and fast. We running hundreds of tests on every check-in and we need more. TestNG, Selenium, and testing intuition guides our tests. If you love making sure things are working right - email us !

Front-end Engineers: You know Javascript. You know the ins, the outs and how to make it blazing fast. You care about performance because you know your users are waiting for every line of your code. You've used some popular frameworks, maybe angular or react - but you know one or more cold.

Where we are:

Burlingame, CA: Just south of San Francisco right on Burlingame Ave.

Charlotte, NC: This is our headquarters. If you're looking for a 30% cheaper cost of living than San Francisco with a fantastic quality of life, this is it.

Chicago, IL: Our newest office. Hiring Software Engineers for this location.

Lending Tree, Inc. | Software/QA/Devops Engineer | Charlotte, NC | ONSITE

https://www.lendingtree.com Email us at: jobs@lendingtree.com

Our Tech Stack: C#, Java, .NET core, Docker, Linux, Javascript, React, Mongo, SQL Server, Kafka, Spark

Who we are: LendingTree, Inc. empowers consumers with information, tools, advice, products and services for critical transactions and financial decisions in their lives.

Specifically - We're looking for:

Dev-ops Engineers: We are in the midst of migrating our primary infrastructure to Kubernetes, .NET core, docker, linux, mongo, kafka, and other cutting edge technologies. We're looking for serious dev-ops engineers to join our team.

Back-end Engineers: You're a crack-shot in your back-end language of choice. Our system matches users with hundreds of possible opportunities in real-time. Needless to say, we're looking for people who care about performance. A lot. Our back-end systems are written in C#, Java, Redis, Mongo, and SQLServer. You might know C# or Java or you might not, but either way you're willing to learn. Regardless, you can impress us in your language of choice. If you're a Senior Engineer - you've worked in server-side code for a few years. You've scaled to thousands or maybe millions of users. If you're a Junior engineer, you love to code and you're good at it. You're smart, you're passionate, and most of all you can't wait to get started. (New grads please apply!)

QA Engineers: We're writing software - and fast. We running hundreds of tests on every check-in and we need more. TestNG, Selenium, and testing intuition guides our tests. If you love making sure things are working right - email us !

Front-end Engineers: You know Javascript. You know the ins, the outs and how to make it blazing fast. You care about performance because you know your users are waiting for every line of your code. You've used some popular frameworks, maybe angular or react - but you know one or more cold.

Where we are:

Charlotte, NC: If you're into great weather and a central location (our airport is an American hub) you should check us out. You can pick great urban living (Uptown's 4th ward is the place to be) or get yourself a huge house (at reasonable prices) in the burbs. The standard of living for an engineer doesn't get any better than this.

My apprehension comes from lack of seeing it in the wild (i.e. scaled businesses).

Google primarily uses C++/Java. Facebook: Hack. Twitter tried Scala and as far as I know, abandon it and went to Java. LinkedIn definitely tried Scala, failed, and went to Java. Square is Ruby/Java.

I'd like to have something to point to as a success story of a company at scale with functional programming. Anyone know of one?

That's really interesting. Can you elaborate?

The trading strategy aside.

The interesting part is that Bitcoin (or crypto in general) represents a limited supply commodity that will (eventually) start to decrease in available supply because it's also used as an active currency.

The users of it as an active currency (as opposed to the users of it as an investment) are price insensitive and don't care what they pay to borrow bitcoin for a few seconds. As long as volatility isn't crazy those few seconds, they are in and out of it as a store of value immediately.

That activity further limits supply. That's the thesis. Limited and dwindling supply along with having an active use that's price insensitive.

Hence his claim that apart from short-term volatility, as long as it increases it's use as a currency, it's long-term value must rise.

Lending Tree, Inc. | Software Engineer | Charlotte, NC | ONSITE

https://www.lendingtree.com Email us at: jobs@lendingtree.com

Tech we use: C#, .NET core, Docker, Linux, Javascript, React, Mongo, SQL Server, Kafka, Spark

Who we are: LendingTree, Inc. empowers consumers with information, tools, advice, products and services for critical transactions and financial decisions in their lives.

Specifically - We're looking for:

Back-end Engineers: You're a crack-shot in your back-end language of choice. Our system matches users with hundreds of possible opportunities in real-time. Needless to say, we're looking for people who care about performance. A lot. Our back-end systems are written in C#, Redis, Mongo, and SQLServer. You might know C# or Java or you might not, but either way you're willing to learn. Regardless, you can impress us in your language of choice. If you're a Senior Engineer - you've worked in server-side code for a few years. You've scaled to thousands or maybe millions of users. If you're a Junior engineer, you love to code and you're good at it. You're smart, you're passionate, and most of all you can't wait to get started. (New grads please apply!)

Front-end Engineers: You know Javascript. You know the ins, the outs and how to make it blazing fast. You care about performance because you know your users are waiting for every line of your code. You've used some popular frameworks, maybe angular or react - but you know one or more cold.

Dev-ops Engineers: When you were a kid, you probably took apart every clock in your house. You might have even put some of them back together. You spot system issues by watching graphs with only peripheral vision. We use Linux, Docker, Kubernetes, Mongo, and a lot of other cutting edge technologies. You have experience in all or some of those but either way you love getting clusters of systems humming. If you're a systems tinkerer, please apply.

Where we are:

Charlotte, NC: If you're into great weather and a central location (our airport is an American hub) you should check us out. You can pick great urban living (Uptown's 4th ward is the place to be) or get yourself a huge house (at reasonable prices) in the burbs. The standard of living for an engineer doesn't get any better than this.

Mailinator does this too of course (with API)

(goes without saying, following is purely conjecture)

Bitcoin has systemic issues arising with transaction rate and block size. Those were ignored (from a speculation standpoint) with the prospect of the ETF. When the ETF was not approved, there's obvious downward speculation pressure on BTC in general. Hence money was looking to leave for some portion of owners.

Ethereum offers a potential haven in that it's well-known and has utility in smart contracts. It's also more attractively priced to hope for a huge price increase as Bitcoin once did.

Keyboard - Kinesis: https://www.kinesis-ergo.com/shop/advantage2-graphite/

Mouse: Xmonad

Lending Tree, Inc. | Software Engineer | Charlotte, NC | ONSITE

https://www.lendingtree.com Email us at: jobs@lendingtree.com

Tech we use: C#, javascript, React, Mongo, SQL Server

Who we are: LendingTree, Inc. empowers consumers with information, tools, advice, products and services for critical transactions and financial decisions in their lives.

Specifically - We're looking for:

Back-end Engineers: You're a crack-shot in your back-end language of choice. Our system matches users with hundreds of possible opportunities in real-time. Needless to say, we're looking for people who care about performance. A lot. Our back-end systems are written in C#, Redis, Mongo, and SQLServer. You might know C# or Java or you might not, but either way you're willing to learn. Regardless, you can impress us in your language of choice. If you're a Senior Engineer - you've worked in server-side code for a few years. You've scaled to thousands or maybe millions of users. If you're a Junior engineer, you love to code and you're good at it. You're smart, you're passionate, and most of all you can't wait to get started. (New grads please apply!)

Front-end Engineers: You know Javascript. You know the ins, the outs and how to make it blazing fast. You care about performance because you know your users are waiting for every line of your code. You've used some popular frameworks, maybe angular or react - but you know one or more cold.

Where we are:

Charlotte, NC: If you're into great weather and a central location (our airport is an American hub) you should check us out. You can pick great urban living (Uptown's 4th ward is the place to be) or get yourself a huge house (at reasonable prices) in the burbs. The standard of living for an engineer doesn't get any better than this.

Running http://www.clickrouter.com - worked out well because I needed it for my other projects and it was an instant revenue win for those use cases alone.

Spruced it up (could use more I know) and opened it to others thereafter. Free money for users.

(It's a service that captures outbound clicks from your site - apart from giving fancy graphs about those, it then affiliatizes the links across all your affiliate accounts - skimlinks, viglinks, cj, etc)

This answers the question: http://paultyma.blogspot.com/2016/06/how-to-get-hired-as-tec...

Lending Tree, Inc. | Charlotte, NC : Burlingame, CA | ONSITE (remote for right candidates) | https://www.lendingtree.com

Email us at: jobs@lendingtree.com

Tech we use: Java, C#, javascript, angular, React, Mongo, SQL Server

Who we are: LendingTree, Inc. empowers consumers with information, tools, advice, products and services for critical transactions and financial decisions in their lives.

Specifically - We're looking for:

Back-end Engineers: You're a crack-shot in your back-end language of choice. Our system matches users with hundreds of possible opportunities in real-time. Needless to say, we're looking for people who care about performance. A lot. Our back-end systems are written in C#, Java using Redis, Mongo, and SQLServer. You might know C# or Java or you might not, but either way you're willing to learn. Regardless, you can impress us in your language of choice. If you're a Senior Engineer - you've worked in server-side code for a few years. You've scaled to thousands or maybe millions of users. If you're a Junior engineer, you love to code and you're good at it. You're smart, you're passionate, and most of all you can't wait to get started. (New grads please apply!)

Front-end Engineers: You know Javascript. You know the ins, the outs and how to make it blazing fast. You care about performance because you know your users are waiting for every line of your code. You've used some popular frameworks, maybe angular or react - but you know one or more cold.

Project Managers: Keeping a small bunch of plates spinning all at once is your specialty. 2+ years as a project manager for technology teams in agile, scrum, kanban, waterfall, or your own thoughts on "just the good bits" from the aforementioned (we'd love to hear them!).

Wordpress Engineers: You know Wordpress inside and out. You've built big sites with custom features that you can show us.

Where we are:

Charlotte, NC: If you're into great weather and a central location (our airport is an American hub) you should check us out. You can pick great urban living (Uptown's 4th ward is the place to be) or get yourself a huge house (at reasonable prices) in the burbs. The standard of living for an engineer doesn't get any better than this.