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Sr Software Engineer
Boston, Massachusetts  |  Hybrid, Onsite
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Applied on May 23, 2022
Job Id #56034 Posted April 28, 2022


  • Motion is a program designed to motivate members to live healthier lives by providing monetary incentives for accomplishing activity goals.
  • You will dig into the complex but rewarding world of IoT, wearables, and cross-platform development, all at massive scale.
  • The role demands system thinking, great execution, bold innovation, obsession with quality, solving problems with creativity while keeping the user in mind and ambition to take projects over the finish line.

Top Qualities we are looking for

  • Experience with Mobile App development, iOS, Android or React Native.
  • Appetite & aptitude for learning
  • Experience in consumer facing interface – web or mobile
  • moving forward with mobile first so this is preferred
  • understanding how they interact
  • familiar with message queues and streaming; i.e: SQS/SNS, Kafka, RabbitMQ
  • Programing language – Javascript, Kotlin, Java, Objective-C or Swift experience.
  • Culture fit
  • Relaxed but focused
  • Quiet & fast moving
  • Values collaboration

Nice to Have

  • Experience with automation testing or at least interest in learning it – We do not have dedicated QA.
  • React Native experience is not required but is the framework our app is written in.
  • Experience in public cloud, AWS preferred, serverless environment

Team and Team size:

  • The candidate will be working on an Agile Scrum team – 4-5 Full Stack Software Engineers, 1 Scrum Master, and other cross-functional partners

Primary Responsibilities:

  • Join a development team to perform all phases of software engineering including requirements analysis, application design, code development and testing with a focus on React Native
  • Cultivate and establish best practices for mobile applications and evangelize continuous delivery with a focus on speed, risks, and fast end user feedback so that business requests can be quickly delivered and measured against KPIs.
  • Use critical thinking and background to look at complex native app problems, offer feedback and guidance as to how we solve them/best practices, and lead the team that delivers the ultimate solution
  • Participate in an Agile / Scrum / Kanban methodology to deliver high-quality software releases every 2 weeks
  • Support and mentor engineers with empathetic coaching and skills development
  • Collaborate on the design with other team members and product owners, both inside and outside the scrum team
  • Conduct design and code reviews to ensure code developed meets coding best practices guidelines, unit testing, security, and scalability and maintainability guidelines

We are looking for a Senior Software Engineer with the following skills:

  • 5+ years of experience building and shipping production software in a scaled distributed environment (preferably in public cloud - AWS, Azure, or Google Cloud)
  • 3+ years of experience with React Native mobile development
  • Experience with relational databases, NoSQL databases and Docker (AWS Aurora & DynamoDB preferred)
  • Excellence in technical communication with peers and non-technical colleagues
  • Bachelors Degree in Computer Science or related field OR related practical experience
  • Commitment to quality, performance, and efficiency


  • Experience with React Native, AWS Services, Queuing tech (Kafka/RabbitMQ), Docker, Jest/other testing frameworks

Nice to have:

  •  C#/.NET Core, GraphQL, Native App development experience (Swift and Kotlin), Healthcare knowledge

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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You are considered to have a disability if you have a physical or mental impairment or medical condition that substantially limits a major life activity, or if you have a history or record of such an impairment or medical condition.

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


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