Analytics Scientist

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The Analytics Scientist will be responsible for the development of the company's advanced technologies, and involved in new product design and ongoing improvements to business operations. YouÕll guide jaxtr's development of new capabilities and share your deep understanding of the following areas (and their interplay with each other) - virality, social graphs, network optimization, fraud, and product pricing.

Responsibilities:

• Conduct analysis on large data sets and complex data systems to generate business insights and recommendations
• Design, develop, and deploy complex data systems & algorithms that may involve predictive score models, fraud mitigation, machine learning, and related utilities.
• Investigate technological and process innovations that leads to improved consumer virality, marketing efficacy and operational efficiencies
• Design and implement processes for organizing and accessing terabyte-sized data sets

Qualifications:

• Masters or higher degree in statistics, operations research, computer science or other quantitative analytical field
• Demonstrable expertise in sophisticated data creation, manipulation and analysis of both structured and unstructured data sets
• Hands-on experience with transactional data and/or virality strongly desired
• Knowledge of multivariate statistical techniques and experimental design
• Hands-on experience in applying these techniques to marketing or Web A/B tests desirable
• Experience in delivering high-speed, large scale data modeling solutions
• Familiar with Java, MySQL and SAS
• Proactive problem solver with strong interpersonal and communication skills

Database Administrator, DBA and MySQL

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We are looking for a wicked-smart, passionate MySQL DBA to join our team.

Responsibilities:

• Manage a growing number of MySQL servers.
• Maintain backups, replication, and monitoring system health.
• Continuously optimize schema, queries and indexing.
• Assist developers in schema/query design.

Qualifications:

• MySQL 5.0 (MyISAM and InnoDB engines).
• SQL, replication, LVM, rsync, Linux.
• 5+ years of experience, ideally at high-traffic consumer Internet site.
• Startup experience.

Bonus points for:

• MySQL MEMORY engine, hybrid engine model.
• Data modeling.
• Data mining and analytics experience.
• Knowledge of Linux, Tomcat, Java, VoIP/SIP, iBatis, stored procedures.
• Large volume emailing management.
• Server optimization.
• Knowing recovery, in addition to backups.
• Understanding when data shouldn't be stored in RDBMS.

Front-end Developer:

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We are seeking a front-end developer who is interested in working with our product team to build next generation Web applications. The ideal candidate is motivated by creating simple to use and well-engineered Web pages, and has an excellent eye for visuals.

Responsibilities:

• Build web pages consistent with existing look and feel of the site.
• Maintain cross-browser compatibility and source-code control.
• Create experiences that users like and adopt.

Qualifications:

• 2+ years HTML and CSS coding experience.
• Passion for user interaction, interfaces, and usability.
• Desire to work in a fast-paced, early stage environment.
• Ability to learn new technologies quickly, and do a bit of everything.
• Prior experience with graphic tools (Photoshop, Illustrator, Dreamweaver, etc.)

Senior Server Developer

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The Senior Server Developer will play a key role in development of jaxtr's core application and key software components. As a start-up engineering specialist, you can operate across the technology stack from the database to the front-end. You will utilize your recent experience designing and developing high-performance and scalable server-side Java solutions. And you have demonstrated ability to deliver high-quality server-side code.

Qualifications:

• BSCS/MSCS or equivalent with at least 8 years of software development experience.
• Server-side Java development experience (multi-threading, high performance, scalability, networking, concurrency).
• Experience developing real time, high reliability, mission critical server applications.
• Java server development using Tomcat in Linux environment.
• Experience with data layer abstraction, SQL, JDBC, connection pooling, STRIPES, tag libraries.

BONUS: iBatis, Junit, Jmax, MySQL, experience with high volume web sites.

Senior System Architect

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The Senior System Architect will play a key role in development of jaxtr's core systems, product infrastructure and EVERYTHING in between! As a start-up engineering specialist, you can operate across the technology stack from the database to the front-end. You will utilize your recent experience designing and developing high-performance and scalable server-side Java solutions. And you have demonstrated ability to deliver high-quality server-side code.

Responsibilities:

• BSCS/MSCS or equivalent with at least 12 years of software development experience
• Server-side Java development experience (multi-threading, high performance, scalability, networking, concurrency)
• Experience developing real time, high reliability, mission critical server applications
• Java server development using Tomcat in Linux environment
• Experience with data layer abstraction, SQL, JDBC, connection pooling, STRIPES, tag libraries

BONUS: iBatis, Junit, Jmax, MySQL, experience with high volume web sites.

Senior Web Developer

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We are looking for a wicked-smart, passionate genius Senior Web Developer to join our team.

Must have:

• JSP, Servlets, server side Java
• HTML, CSS
• AJAX or JavaScript
• Knowledge of browsers

Nice to have:

• Tomcat, Apache
• SEO
• MySQL
• Linux
• REST / SOAP

Extra points for:

• XHTML, XSLT
• Mobile browsers

Senior Network Engineer/System Administrator

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Responsibilities:

The ideal candidate has at least 5 to 7 years of experience, and has held roles in large network environments. Additionally, he/she has a proven record of working within a fast-paced, high-availability environment.

Qualifications:

• Production mentality and process-oriented
• Expert knowledge of Redhat and other *NIX distributions
• Provisioning and package management using kickstart, PXE, rpmbuild, yum
• Expert knowledge of Layer 2 through 7 routing technologies - Cisco, Netscaler, F5
• Firewall/VPN administration
• Tomcat server administration
• Source control systems, including CVS, Subversion, RANCID
• Administration of NAS/SAN storage systems
• Basic MySQL database administration
• Monitoring, log server processing and analysis including Nagios, SNMP, RT, MRTG, CACTI, Syslog-NG
• DNS, NFS, HTTP and Sendmail systems administration
• Strong scripting and debugging skills: perl, shell, cgi, php, python, tcl
• Expertise in executing network maintenance within the constraints of published outage windows
• Excellent oral/written communication and documentation skills
• Four-year degree or equivalent industry experience

Quality Assurance Engineer

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The Quality Assurance Engineer will be on the front-line of customer satisfaction and engagement. The ideal candidate will be comfortable doing whitebox testing, but can also do ad-hoc testing and documentation when needed. You will have the opportunity to influence and help build backend QA tools in a fun and fast-paced, dynamic team environment, and you will work closely with Product Managers, Development Teams, and Release Management during the product and development cycles in an Agile development process.

Responsibilities:

• Develop and execute test plans and use cases for product features and functionality
• Conduct review and sign-off for test plans and use cases; build consensus with business owners and engineering
• Create and maintain automated tests; execute, analyze and track results of automated test cases
• Verify and validate customer issues; Track bugs and issues in bug tracking tool
• Work closely with Engineering, Product Management and Operations to ensure quality delivery of feature(s) and function(s)

Qualifications:

• Able to prioritize test tasks from multiple projects
• Experience working within an Agile development methodology
• Strong analytical skills and ability to assist others in brain storming and problem solving.
• Excellent written and verbal communication skills
• Experience working with Selenium-RC, SVN, Fitnesse or Watir
• Experience in test automation techniques and frameworks
• Ability to work well independently or within a team
• Experience in Java, Maven, Ant and Cruise Control a plus

UI & Visual Designer

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The UI design role is responsible for making our Web site engaging, usable, and visually appealing. We are looking for a designer with solid skills in graphic design, user experience, and an excellent eye for clean task oriented layout and aesthetics.

Responsibilities:

• Work closely with product management and engineering to create innovative user interfaces and experiences
• Design wireframes and user interface elements
• Produce and maintain creative assets such as page layouts, color palettes, typography and iconography
• Monitor and ensure design consistency in an agile Web development environment

Qualifications:

• Demonstrated experience in designing rich Web sites and applications
• Degree in Graphic Design, Interaction Design, Visual Arts or related field
• 3-6 years of Web design experience
• Expert level skills with Photoshop and Illustrator
• Very strong attention to detail
• Understanding or passion for learning new interaction technologies such as AJAX and Flash
• Startup and consumer Internet experience a plus