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Rockerbox

New York, NY
26 - 50 employees
We help companies turn noisy data into actionable insights about their customers and marketing efforts
Rockerbox is developing enterprise-class marketing attribution software that is intuitive and easy for any business. We collect, cleanse and standardize data about a company's marketing touchpoints, offline & online advertising, purchase orders, customer data and more. We then use machine-learning to apply custom models on top of the data to help companies analyze the effectiveness of their marketing and health of their business. Rockerbox works with some of today's leading brands, such as...
Role for: Back-End Engineer Full-Stack Engineer
Technologies: Mesos Scala Akka Cassandra Kafka Python React JavaScript Elastic Search D3 Tornado Twisted Pandas ES6 HTML Redux Docker MySQL Git CircleCI

LedgerX

New York, NY
11 - 25 employees
Cryptocurrency asset management platform
LedgerX is the first US federally regulated exchange and clearinghouse for bitcoin derivatives. We help our customers hedge risk using options, linking crypto and traditional finance and building the infrastructure Bitcoin needs to scale.
Role for: Back-End Engineer Front-End Engineer Mobile Engineer
Technologies: Python Tornado React React Native Redux Docker

Seesaw

San Francisco Bay Area, CA
26 - 50 employees
Seesaw is a platform for student engagement.
Seesaw inspires engagement by giving students powerful creative tools to capture their learning. Students are even more motivated knowing they can show their learning to classmates, teachers and families right in the app.
Role for: Back-End Engineer Full-Stack Engineer
Technologies: Python Angular.js React AWS DynamoDB Elastic Search AWS Athena Tornado Redis CloudFront Docker Android Objective-C iOS Development

Hipmunk

51 - 100 employees
The fastest, easiest way to plan travel
Hipmunk is the fastest, easiest way to plan travel. Our website, mobile app and chat bots help save time and money by comparing top travel sites to show the perfect flight or hotel at the cheapest price. Hipmunk offers the most comprehensive travel search, from commercial flights, trains, and charter flights to hotels and vacation rentals through Airbnb and HomeAway. The unique display makes it easy to visually compare results to choose the best option. Technologies: Python PostgreSQL Redis iOS Android Swift JavaScript React Tornado Puppet Haproxy Elastic Search

Final

11 - 25 employees
A credit card built for the 21st century
We're working on a physical and digital credit card that gives consumers total control over their merchant relationships. Final allows consumers to generate as many unique credit cards numbers as they need that are associated with one main account, giving consumers the ability to give and retract access on any individual merchant. In the case of fraud or data breach, a card holder simply deactivates that one unique number not impacting any of their other relationships. Consumers no longer... Technologies: Ruby Rails Redis PostgreSQL Amazon AWS Tornado React iOS Restful API Nginx RabbitMQ

Synapse Technology

San Francisco Bay Area, CA
< 10 employees
Artificial Intelligence for a threat-free world
Every day, two million passengers and their baggage are screened at US airports. Millions more are screened at international airports, office buildings, infrastructure centers, and more. Beyond people, billions of pieces of cargo, mail, and freight are scanned. What most of these have in common is little automation and very manual process. Synapse provides algorithmic analysis of security x-ray images to determine if they contain a threat, such as a firearm of explosive. We deploy our deep...
Role for: Back-End Engineer Front-End Engineer Full-Stack Engineer
Technologies: Python Tensorflow React JavaScript Arch Linux Flask Tornado

Zulip (Kandra Labs)

San Francisco Bay Area, CA
< 10 employees
Reinventing chat so teams can be productive together
Zulip is reinventing chat so teams can accomplish more together. We've created a place where a conversation can shift seamlessly from the immediacy of chat to the reply-whenever efficiency of email, and back. With Zulip you can participate in the conversations that matter to you and efficiently tune out the rest — no matter whether you're there in real time, coming online after a morning hard at work, or returning from a vacation away from it.
Role for: Full-Stack Engineer Generalist Engineer Mobile Engineer
Technologies: React Native Python PostgreSQL JavaScript Tornado Git AWS Kotlin Django Redis