Explore 1 core java developer jobs from 1 hiring companies in Deer Trail, CO, US. Filter by remote, salary, experience, and company, then open any listing to apply.

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Core Java Developer

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Core Java Developer Jobs

CACI

Hybrid

Job Title: Software Engineer - Full StackJob Category: EngineeringTime Type: Full timeMinimum Clearance Required to Start: SecretEmployee Type: RegularPercentage of Travel Required: Up to 10%Type of Travel: LocalAnticipated Posting End: There is not an anticipated end date for this posting since applications are needed on an ongoing basis.The Opportunity:We are seeking a talented and motivated Software Engineer to join our dynamic team. As a key contributor, you will design, develop, and maintain innovative software solutions that meet modern industry standards. You will be responsible for writing clean, scalable code, troubleshooting technical issues, and optimizing system performance. A strong understanding of cloud computing, APIs, and software architecture is highly desirable. If you are passionate about technology and eager to make an impact, we would love to hear from you!Responsibilities:<ul><li>Feature Development: Build and maintain new Java microservices using Quarkus or Spring Boot. Focus on writing high-performance, asynchronous code that adheres to the program&#39;s architectural patterns.</li><li>Component-Based UI: Develop modular React components using Vite and the Astro UXDS design system. Ensure UI elements are reusable and integrated correctly with the backend.</li><li>BFF Integration: Implement and extend ExpressJS middleware to handle specific frontend-to-backend data transformations and API routing.</li><li>Local Containerization: Use Docker to build and test containerized services locally, ensuring parity with the development and test Kubernetes environments.</li><li>Automated Testing: Own the unit and integration testing lifecycle using JUnit and modern frontend testing frameworks. Ensure 100% traceability between tests and mission requirements.</li><li>Pipeline Contribution: Maintain and update GitLab CI/CD job definitions for specific services, including build scripts, linting, and automated vulnerability scanning.</li></ul>Qualifications: T3Required:<ul><li>Bachelor’s degree in computer science or related field</li><li>5&#43; years of experience in object-oriented (OO) languages</li><li>Core Java: Proficiency in Java 17&#43;, including familiarity with dependency injection and RESTful service design.</li><li>React Ecosystem: Experience with React hooks, state management, and modern build tools like Vite.</li><li>Data Access: Ability to design and implement schemas for PostgreSQL and MongoDB, and write optimized queries for OpenSearch.</li><li>K8s Basics: Practical experience deploying and debugging applications within a Kubernetes cluster.</li></ul><ul><li>Must possess an active Secret security clearance</li><li>Willing to be submitted for and obtain a Top Secret security clearance</li></ul>Responsibilities:<ul><li>Module Design: Take ownership of specific functional modules, defining the internal architecture of services and how they interact with the broader Quarkus/Spring Boot ecosystem.</li><li>Geospatial Visualization Engine: Lead the integration of CesiumJS and STK into the React frontend. Optimize the rendering of 4D space-track data to ensure low latency and high frame rates.</li><li>Microservices Orchestration: Manage and optimize Kubernetes manifests and Helm charts. Leverage Rancher for service scaling and environment configuration management.</li><li>API Governance: Design and document stable API contracts for microservices. Ensure the ExpressJS gateway layer efficiently handles telemetry streams and user authentication.</li><li>DevSecOps Integration: Harden GitLab CI/CD pipelines by integrating automated security tools (SAST/DAST) and container image signing.</li><li>Data Strategy Execution: Implement high-availability data patterns, including index management in OpenSearch and data sharding strategies for large geospatial datasets.</li><li>Technical Review: Conduct peer code reviews focused on security, performance, and adherence to the Lead Engineer’s architectural vision.</li></ul>Qualifications: T4Required:<ul><li>Bachelor’s degree in computer science or related field</li><li>7&#43; years of experience in object-oriented (OO) languages</li><li>Advanced Java: Expert knowledge of multi-threading, reactive programming, and performance tuning for containerized JVMs.</li><li>Complex Frontend: Deep experience managing complex state and 3D rendering cycles in React/Vite applications.</li><li>Infrastructure as Code: Proficiency in writing and maintaining K8s YAML, Helm charts, and GitLab CI configurations.</li><li>Domain Fluency: Strong understanding of satellite mission logic, coordinate systems (ECI/ECEF), and time-series data management.</li><li>Security Standards: Experience implementing OWASP Top 10 mitigations and government-specific security hardening (STIGs).</li><li>Must possess an active Secret security clearance</li><li>Willing to be submitted for and obtain a Top Secret security clearance</li></ul>Responsibilities:<ul><li>Core Stack Architecture:<ul><li>Establish the foundational technical stack for a multi-year program. You will make the final determination on frameworks (e.g., Quarkus vs. Spring Boot) and architectural patterns that ensure long-term scalability, performance, and low technical debt.</li></ul></li><li>Space Domain Technical Leadership:<ul><li>Bridge the gap between systems engineering and software. You are responsible for translating orbital mechanics, mission planning logic, and satellite C2 requirements into high-performance software architecture.</li></ul></li><li>CI/CD &amp; Deployment Strategy:<ul><li>Architect the end-to-end GitLab CI/CD strategy specifically for cleared and air-gapped environments. This includes automating security compliance reporting, dependency management in restricted networks, and streamlined deployment to production.</li></ul></li><li>Distributed System Design:<ul><li>Engineer a resilient &#34;system-of-systems&#34; capable of processing real-time telemetry and 4D geospatial visualizations (CesiumJS/STK). Focus on low-latency data distribution and high-availability patterns.</li></ul></li><li>Zero Trust &amp; Security Hardening:<ul><li>Implement a Zero Trust security model across the full stack. You are responsible for the security posture of everything from base Docker images and Kubernetes network policies to React frontend hardening.</li></ul></li><li>Kubernetes Orchestration &amp; Service Mesh:<ul><li>Define the strategy for service mesh (e.g., Istio or Linkerd), automated scaling, and cluster resource management within Rancher to handle fluctuating mission workloads.</li></ul></li><li>Technical Mentorship &amp; Culture:<ul><li> Direct the engineering team through deep-dive code and architectural reviews. You are responsible for setting the &#34;build-it-right-first&#34; technical culture, ensuring senior and mid-level devs adhere to established patterns.</li></ul></li></ul>Qualifications: T5Required:<ul><li>Bachelor’s degree in computer science or related field</li><li>10&#43; years of experience in object-oriented (OO) languages</li><li>Expert Java Ecosystem: Mastery of Java 17&#43;, reactive programming, and building native-image binaries for optimized container performance.</li><li>Full-Stack Strategy: Deep understanding of the interaction between Vite/React frontends and asynchronous backend services.</li><li>Production K8s: Extensive experience managing production-grade Kubernetes environments, including persistent storage, ingress controllers, and sidecar patterns.</li><li>Data Architecture: Expert knowledge of designing high-throughput data layers using PostgreSQL, MongoDB, and OpenSearch for complex geospatial queries.</li><li>Compliance Engineering: Experience delivering software within RMF (Risk Management Framework) or similar government security accreditation processes.</li><li>Must possess an active Secret security clearance</li><li>Willing to be submitted for and obtain a Top Secret security clearance</li></ul>This position is contingent on funding and may not be filled immediately. However, this position is representative of positions within CACI that are consistently available. Individuals who apply may also be considered for other positions at CACI.What You Can Expect: A culture of integrity.At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.An environment of trust.CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.A focus on continuous growth.Together, we will advance our nation&#39;s most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy. Pay Range: There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.The proposed salary range for this position is: $90,300 - 189,600 USD<div></div><div>CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.</div>

Software Engineer - Full Stack

Software Engineer

Bachelor's degree in CS or related field; 5+ years OO languages; Core Java 17+; React with Vite; PostgreSQL, MongoDB, OpenSearch; Kubernetes; active Secret clearance; willing to pursue Top Secret.

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Core Java Developer Jobs in Deer Trail, CO, US

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