Backend Developer – TS/SCI with Polygraph Required

About the Team: At Core Interface, we believe great software is built by small teams of thoughtful engineers working on meaningful problems. Our work supports mission-critical federal programs where the data pipeline — from raw ingest to final display — has to be fast, reliable, and built to last. We’re looking for a Backend Developer to join our team. Core Interface Benefits 100% employer-paid medical, dental, and vision (employee + family) 401(k) with 6% company contribution 4 weeks PTO plus 11 federal holidays Paid parental leave Government shutdown protection Tuition assistance and technical training Internet, phone, and fitness reimbursements Referral bonuses and spot awards Quarterly team events What You’ll Do in This Role Design and develop backend services and data processing pipelines using modern configuration management and software engineering practices Build and maintain APIs and services supporting data ingest, processing, storage, and delivery Provide ongoing maintenance, support, and enhancements to existing systems and platforms Troubleshoot complex problems and provide technical support for software and application issues Recommend and implement improvements to system performance, reliability, and maintainability Collaborate with other engineers on the team to sustain and advance the organization’s technical capabilities

Required Qualifications: Active TS/SCI with Polygraph U.S. Citizenship Bachelor’s degree in Computer Science, Computer Engineering, Electrical Engineering, or a related field, or an equivalent combination of education, technical training, and work/military experience 5+ years of professional software development experience Hands-on experience with modern programming languages such as Java, Python, or JavaScript Experience building APIs and services using REST and related web technologies Working knowledge of relational and non-relational databases Experience with Linux (preferred) or Windows operating systems Familiarity with Git or other source control tools Clear communication skills; comfortable working in a small, collaborative team Additional Strengths That Stand Out Experience with Big Data technologies such as Hadoop, Spark, or MapReduce Experience with monitoring and observability tools (ELK, Prometheus, Grafana, etc.) Familiarity with containerization and orchestration (Docker, Kubernetes) DevOps experience building and deploying infrastructure with tools like Ansible, Jenkins, or CloudFormation Experience with ElasticSearch, MongoDB, RabbitMQ, or NiFi Prior experience supporting IC or DoD mission environments Commitment to Inclusion Core Interface is an Equal Opportunity / Affirmative Action employer committed to building a workplace where everyone can contribute and grow. All qualified applicants will receive consideration for employment without regard to protected status under applicable law.