Principal Software Engineer

Job Locations US-NC-Cary
Job ID


At MercuryGate, every solution we create is designed to be The Future of Delivery. This same attribute applies to our dedicated team members, whose expertise and dedication have made MercuryGate an industry leader in the transportation and logistics sector.


Are you ready to work in a fun, fast-paced and energetic environment that challenges you and rewards you for innovation, creativity and initiative? If so, come play with the MercuryGate team of champions by applying for our Principal Software Engineer (Full Stack) opportunity today!

Job Summary & Key Responsibilities

Qualified candidates can easily architect and build web front-ends using JavaScript, HTML5 and CSS3 using the latest frameworks. Additionally, they can fluidly move between advanced front-end coding to implementing a scalable back-end using Java and Oracle.


The ideal candidate will have demonstrated the ability to design and implement system components, meeting deadlines, effectively managing priorities, communicating progress, and enjoys working as part of a team.  Strong analytical, problem solving, refactoring, and debugging skills are required. To that end, candidates will be asked to discuss their best work and explain what made it great, as well as life lessons learned that have helped them grow as a professional.

  • Work with a cross-functional agile development team
  • Experiment with new technologies and bring fresh ideas that can benefit and evolve our tech stack
  • Lives the creed of leaving the code in a better place
  • Isn’t afraid to dig into existing code and work to improve it
  • Understands the role CI/CD plays in rapid delivery

Job Qualifications & Other Requirements

Required Skills/Experience

  • BS degree in Computer Science, Engineering, or equivalent; Masters degree a plus
  • Minimum 8 years of front-end development using JavaScript
  • Minimum 10 years of full stack Java based web application development
  • Proven experience in leading component designs and implementation
  • Demonstrated experience in leading the technical implementation of application components for small teams of engineers
  • Strong ability to dive into existing code, understand what it’s doing, and determine what can be done to make it better
  • Experienced in designing and building highly scalable applications with a deep understanding of what it takes to ensure a component is manageable when it is in production
  • Excellent communication skills, and attention to detail

Required Frontend Skills/Experience 

  • Expert with a major Javascript framework (React, Angular, Ember, Backbone, ExtJS)
  • Experience with HTML5 and CSS3 including CSS preprocessors like SASS
  • Experience with single page JavaScript applications
  • Experience with cross browser support for the latest browsers

Required Backend Skills/Experience

  • Expert with Java including Hibernate/JPA
  • Proficient with Oracle databases and SQL
  • Build and consume internal/external APIs (including, but not limited to REST)
  • Experience with Spring

Preferred Skills / Experience

  • Hands-on experience with test-driven development (TDD) and CI/CD
  • Worked with highly scalable, distributed, micro-service based applications
  • Experience with AMQP Messaging (RabbitMQ, ActiveMQ, etc)
  • Strong experience with profiling and performance optimization
  • Experience with NodeJS and Yarn
  • Experience with Webpack a plus
  • Knowledgeable about current best practices with JavaScript/CSS including ES6


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