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Senior Java Engineer

Engineering | San Francisco, CA | Full Time

Job Description

Position Title: Senior Java Engineer 

Position Description: 

Tapjoy's Data Science Engineering team is seeking a talented software engineer who will work closely with Data Scientists, Data Platform, Product team and other Engineering teams to help scale and support Tapjoy's Optimization platform. We are looking for someone who has had experience building and supporting high throughput low-latency applications, working with vast amounts of data, and scaling systems. Essential duties and responsibilities may include, but are not limited to:

  • Work in an agile development environment building products using Java/Golang/Python/Scala and AWS services

  • Design, develop and maintain highly available, robust and reliable large scale ad-serving services 

  • Implement generalized a/b test frameworks to support multivariate testing covering component change/user segmentation and bucketing/metadata driven auto experiment set up, etc.

  • Identify and provide solutions for performance and architectural issues

Position Location: 

*Tapjoy US employees are currently working remotely amidst the COVID-19 pandemic. This position will begin as remote. The possibility (but not requirement) to work in our San Francisco headquarters may arise as numbers decline. Tapjoy is currently authorized to employ out of the states of CA, TX, TN, and MA.*

Core Competencies:

  • You are passionate about software engineering, and desire to solve large, complex problems. 

  • You possess strong computer science fundamentals, including knowledge of data structures, algorithms, and object-oriented design

  • You have experience with or interest in Java, and interfacing with REST APIs

  • You have strong SQL understanding and some data analysis experience.

  • You can write clean, high quality, performant, maintainable code that is easy to read and well-documented

  • You embrace and champion engineering best practices 

  • You are self-directed and self-driven, have a strong sense of ownership

  • You are results-oriented with a high emphasis on "on-time" delivery of projects and features

  • You possess sharp analytical abilities, proven design skills and excellent communication skills

  • You value collaboration with various teams and stakeholders highly


  • B.S. or M.S. in Computer Science with 5+ years of Software Engineering experience

  • Strong software development skills, software design patterns and algorithms, with proficiency in Java

  • Strong knowledge of data structures and SQL 

  • Knowledge of low-latency, high-throughput services

  • Experience working with no-SQL databases (Couchbase, Redis, Aerospike, etc)

  • Experience working with big data platforms and technologies (Kafka, Spark, Hadoop, Pig) is a plus

  • Understanding of general machine learning and data mining concepts is a plus

  • Experience with advertising industry is also a plus

Tapjoy is a leading mobile advertising and app monetization company. Our platform empowers advertisers to connect with over 1 billion monthly active users through value exchange advertising that drives awareness, engagement, and the metrics that matter most to their overall growth. Meanwhile, companies such as Scopely, Glu, Ludia, and many of the Top 200 grossing app publishers trust our platform to monetize their content, grow their audiences, and reward their users. Founded in 2007 and headquartered in San Francisco, Tapjoy is a global organization with offices in Santa Barbara, Boston, London, Beijing, Tokyo, and Seoul.

Tapjoy is an equal opportunity employer. We believe that diversity and inclusion lead to stronger, more innovative teams and better business results; we want to draw from the broadest talent pool possible and encourage qualified applicants. Tapjoy does not discriminate on the basis of sex, race, ethnicity, color, age, sexual orientation, gender (including identity and expression), disability (mental or physical), religion, national origin, citizenship, marital status, military or veteran status, or any other protected classification protected by applicable law; we will provide reasonable accommodations for qualified individuals with disabilities, and pursuant to applicable fair chance ordinances, we will consider for employment qualified applicants with arrest and conviction records.

Interested to hear more from your future co-workers? We welcome you to checkout out this video for introduction of our product and engineering teams.

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