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At JLG Technologies, a subsidiary of Securus Technologies, we develop cutting-edge voice identification and data analysis software. The corrections and law enforcement industries use our software to keep institutions safe and secure by preventing crimes plotted over the telephone.

We believe in our mission, and are creating exciting products at the intersection of big data and voice technology. We’re a dynamic and diverse team where each person plays a big role. We have the best of both worlds—a small, entrepreneurial environment with the financial backing of a large parent company.

Interested in joining the team? Email us your resume at with the job title in the subject line.

Current Opportunities

Senior Web Developer

Southborough, MA


We are looking for a Senior Web Developer to join our investigative solutions team. The Senior Web Developer contributes to all facets of the development, maintenance, and support of the product. Your work will focus on the front-end of our hosted SaaS application adding additional features and functionality. You will be responsible for coding web-based UIs in JavaScript/CSS. Candidates with additional experience implementing the middle-tier RESTful services used by the front-end are preferred.

Responsibilities include but are not limited to:

  • Software Development Life Cycle (SDLC) deliverables.
  • Analyze business requirements and estimate level of effort.
  • Develop technical requirements and interface specifications.
  • Design software architecture and user experience.
  • Write code.
  • Perform unit and integration testing.
  • Deployment to production.
  • Troubleshooting and resolution of production issues.
  • Collaborate with product management, QA, and production support to meet requirements and work within existing architecture to provide the best technical solution.
  • Teach and mentor other engineers in your areas of expertise.


The successful candidate will be a technically proficient self-starter with excellent communications skills and a demonstrated ability for self-directed learning.They will have experience using TypeScript/JavaScript frameworks to create web-based UIs. They will be familiar with how those frameworks use JavaScript and CSS under the hood and be able to write/debug code without them. They will have experience and be comfortable creating functionality “from scratch” given a mock-up of desired look and behavior without relying on a preexisting template, i.e., from a blank page.

They will care about software quality, not only in the desired functionality, but also in designing the system to fail gracefully in error conditions. They will desire and be able to discuss trade-offs in design choices and how they affect the properties and behavior of the system as a whole. During design and implementation, they have a focus on automated testing. They have an ownership mentality.


  • 5+ years experience developing interactive web applications using HTML, CSS, TypeScript.
  • Ability to take total ownership of assigned components.
  • Team player and a self-starter.
  • Excellent problem-solving and troubleshooting skills.
  • Ability and willingness to select, learn, and teach new technologies.

Technologies Used

Front-end Required:

  • TypeScript
  • SCSS
  • JSON RESTful Web Services
  • Knockout.js
  • HTML Canvas

Middle-tier (Bonus):

  • C#
  • Entity Framework
  • SQL
  • SQL Server
  • Couchbase
  • ActiveMq