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Req # 100999

Senior Software Engineer

Mountain View, CA US

Employee: Full Time Employee
Travel: 10%
About Castlight

At Castlight, our mission is to empower people to make the best choices for their health and to help companies make the most of their health benefits. We offer a health benefits platform that engages employees to make better healthcare decisions and can guide them to the right program, care, and provider. The platform also enables benefit leaders to communicate and measure their programs while driving employee engagement with targeted, relevant communications. 

To date, Castlight has partnered with more than 240 large enterprise customers, spanning millions of lives, to improve healthcare outcomes, lower costs, and increase benefits satisfaction.

The Castlight platform interacts with multitude of health/fitness devices and apps real time data streams. The ideal candidate will have top-notch software architecture and development skills, and preferably has experience working on early stage consumer service platforms. Day-to-day tasks will include:
  • Architecting, building, testing and refining Big Data platform for data analytics, business intelligence (BI), and reporting
  • Design data warehouse schemas for fast reporting.
  • Design and implement ETL jobs/scripts to support distributed processing using Spark and Scala
  • Develop user defined functions to provide custom capabilities
  • Research, evaluate and utilize new technologies/tools/frameworks around Spark, Spark-SQL, Spark-MLLib etc.
  • Evolving various stack components to scale and address new service requirements
  • Brainstorming and prototyping new concepts and approaches fast
  • Turning prototypes into real things
  • 5 years of software development experience
  • Strong experience with ETL tools (e.g. Informatica, Data Stage..)
  • 1 year of experience on developing ETL jobs using Spark(Scala preferred, Java, Python)
  • Strong SQL skills (complex queries)
  • Strong experience in Data Modeling/Dimensional Modeling, Integration and RDBMS (MySQL, Oracle)
  • Experience with Design to Deliverable a V1 project

Desired Skills and Experience:

  • 5+ years of software development experience
  • 2+ years of experience on developing ETL job for Spark
  • Strong programming skills in Scala,Java, shell scripts (parallel data processing experience)
  • Experience in NoSQL such as MongoDB and Cassandra.
  • Strong knowledge of key data structures and algorithms (indexing, hash tables, joins, aggregation)
  • Experience in developing analytic software utilizing EC2/S3/EMR/Postgress DB on AWS a big plus
  • Experience with Unix based distributed systems
  • Strong academic background in computer science
  • Demonstrable track record building distributed, clustered, high-throughput applications
  • Experience with Docker a plus
  • Experience with workflow management tools such as Airflow or Oozie a big plus
  • Experience with installation, configuration, tuning Spark cluster a plus
  • Experience Hadoop ecosystem a plus
  • Experience in analysis, design, development and implementation of large scale products
  • Experience with development of REST based API's for consumer based services using J2EE and Spring a plus

We are Castlight and we are…


* Changing healthcare is a team sport

* Teamwork requires respect

* Direct feedback is a gift that improves us

* Diversity makes us stronger

* We take care of ourselves and each other=


* We put our mission first

* We are here to transform healthcare

* We tackle complex problems with curiosity, passion, and ambition

* We bring our best every day

* We learn and grow together


* Done well is better than perfect

* We move fast to accelerate execution and learning

* We are empowered to take action

* We own the outcome

* We win together

EEOC Statement
Castlight Health provides equal employment opportunity (EEO) to all persons regardless of age, color, national origin, citizenship status, physical or mental disability, race, religion, creed, gender, sex, pregnancy, sexual orientation, gender identity and/or expression, genetic information, marital status, status with regard to public assistance, veteran status, or any other characteristic protected by federal, state or local law. In addition, Castlight Health will provide reasonable accommodations for qualified individuals with disabilities.
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