Senior Back End Engineer

Senior Back-End EngineerRemoteProgressive Technology Federal Systems, Inc. (PTFS) has been a leading enterprise Content Services Platform (eCSP) to Federal, Civilian and DoD agencies, has an opening for a Lead Search Engineer.Duties: The Senior Back-End Engineer will serve as the subject matter expert (SME) primarily responsible for the design, development and support of the custom code and open-source products that comprise the search engine Solr. The Java-based custom code includes parsers, query parser language, publisher, consistency check, APIs, monitoring utilities and XSLT transforms. The candidate will be working with the following state of art technologies; Solr, Lucene, Natural Language Processing, Machine Learning, Linux, Groovy, Python, Splunk, Prometheus, Grafana, DevSecOps, Jenkins, Maven, Gitlab, Nexus, Ansible, TDD, BDD, JMeter, Selenium, and other open-source frameworks.Skills Required:Over 7 years of experience as Solr Search Engineer for an enterprise-level information retrieval system. Strong experience installing, tuning, administering, maintaining, and upgrading Solr on Linux in a large-scale production environment.Strong experience indexing large volume of content and metadata to Solr search engine.Strong experience developing and maintaining custom query parser on top of Apache Lucene API.Strong experience with Solr Search queries optimization and relevancy tuning.Strong experience designing, implementing, and maintaining Solr schema.Strong experience implementing and maintaining custom parser from unstructured and structured content using core Java and regular expression.Strong XML experience including parsing using JAXP and XSLT/XPATH transformation implementation to index metadata.Strong experience troubleshooting multi-tiers systems on Linux environment and tunning JVM.Experience using templating engine of dynamic language to format and decorate search results.Experience implementing monitoring solution using Prometheus and Grafana. Experience with DevOps using Git, Jenkins, Maven, Ansible and Nexus Experience with Behavior-driven development or Test-driven development. test automation and Performance testing.Experience with agile software development lifecycle methodologies including Scrum or Kanban.Experience authoring and maintaining design documentation, standard operating procedures, and configuration documentation. Preferred Skills: Experience with Linux Containers (Docker/Podman), Kubernetes, and deployment of containerized applications/Microservices architectures.Experience with AWS and/or other Azure cloud technologies.Experience with Machine learning, Natural Language Processing and Vector Search.Education: A Bachelor's Degree in Computer Science. Eligibility:US Citizen with a minimum of three years continuous residency in the USA.You must be authorized to legally work in the U.S., PTFS will not sponsor any visas at this time.Eligibility for a Public Trust required. Benefits:15 days PTO per year11 paid holidays per yearMedical, Dental & Vision401(k) Plan with matchingTuition assistanceDisability insuranceGym in the Rockville, MD office

Salary : $130,000 - $150,000