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Sr. Back End Developer
Richfield, Minnesota  |  Remote, Hybrid, Onsite
Contract Position
It appears that you have already applied to this job.
Applied on November 30, 2021
Job Id #52070 Posted November 10, 2021

Job Description: 
  • The Locker Availability and Reservations engineering team is part of the wider multi-channel ordering area.  
  • The team creates custom APIs that allow Client to manage lockers located at store locations.  
  • The team’s software provides the ability to find available lockers and reserve them, integrating with client applications and 3rd party locker providers.
  • Use cases include after-hours customer order pickup, customer repair pickup, and hand-off to carriers for delivery.  
Project Description:
  • We are a small team of engineers using agile ways of working.  
  • Our applications are built using modern deployment pipelines with rich automated developer tests.  
  • Applications run on the JVM and are backed by Kafka and CockroachDB.  
  • Our team values collaboration, continuous improvement, speed to market, automated testing, and clean code.  
Position Summary/Job Description:
  • This position is for an engineer on our small team.  
  • Expect to be coding or reviewing code about 80% of the time.  
  • The rest of the time will be spent planning, designing solutions, documenting technical architecture, and collaborating with team members. 
How much time will the resource spend pair programming? 
  • 25%
Skills Overview:
What are the top five skills and number of years of experience required to perform this job?
  • 7+ years of experience in software
  • Expert with Java and the JVM
  • Expert with Spring framework
  • Expert in a range of automated testing techniques
  • Expert developing applications backed by a relational database 
  • Experience programing using Java/Groovy language and Spock framework
  • Experience performance tuning Java applications
What are some preferred/nice to have skills the manager is looking for?
  • Experience with CockroachDB deployed in public cloud 
  • Knowledge of Kafka, even if no direct experience
  • Retail or Supply Chain experience

Horizontal is proud to be an Equal Opportunity and Affirmative Action Employer. We seek to provide employment opportunities to talented, qualified candidates regardless of race, color, sex/gender including gender identity and/or expression, national origin, religion, sexual orientation, disability, marital status, citizen status, veteran status, or any other protected classification under federal, state or local law.

In addition, Horizontal will provide reasonable accommodations for qualified individuals with disabilities. If you need to request a reasonable accommodation in order to complete the application or interview process, please contact

All applicants applying must be legally authorized to work in the country of employment.


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Horizontal is proud to be an Equal Employment Opportunity/Affirmative Action Employer providing a drug-free workplace.


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