Position Summary: We are looking for a Senior Frontend Engineer to join our cross-functional product squad that owns core product areas including the user system, investigation workflows, and complex data visualisation. You will work in close partnership with another Senior Frontend Engineer who has built and evolved much of the existing frontend, sharing ownership of frontend architecture, technical decisions, and code quality, while contributing to the ongoing development of a mature, data-intensive product with direct impact on user experience and product quality. This is a remote role, and we are flexible with considering applications from anywhere in Europe. More details: crystalintelligence.com Duties and responsibilities: - Design, develop, and maintain complex frontend applications using Angular; - Collaborate with cross-functional squad members to translate product requirements into technical solutions; - Ensure high code quality through code reviews, testing, and adherence to best practices; - Contribute to frontend architecture, technical standards, and long-term maintainability; - Optimize application performance, accessibility, and user experience. Required: - At least 5 years of professional frontend development experience, including 3+ years of hands-on experience building production-grade applications with Angular; - Solid knowledge of TypeScript, HTML5, CSS3, and modern frontend practices; - Experience with state management, RESTful APIs, and asynchronous programming; - Understanding of frontend architecture, scalability, and performance optimization; - Experience with version control systems (e.g., Git) and collaborative development workflows; - Ability to write clean, maintainable, and well-tested code; - Proficiency in English. Would be a plus: - Familiarity with Nx, monorepos, or large-scale frontend codebases; - Experience with automated testing frameworks (unit, integration, e2e); - Exposure to CI/CD pipelines and DevOps practices; - Previous experience mentoring or leading frontend initiatives; - Experience with Tailwind, responsive design and BEM notation methodology.

This description is a summary of our understanding of the job description. Click on 'Apply' button to find out more. Role Description We are seeking a talented UI Developer to lead the creation of modern, intuitive, and responsive web interfaces. You won't just be handing over static mockups; you will be responsible for building out the frontend and ensuring it is seamlessly integrated with our Flask/Django backend. The ideal candidate lives at the intersection of design and logic, possessing the ability to craft beautiful user experiences and the technical skill to implement them within a Python-based web framework. Key Responsibilities - Design & Development: Create modern, high-fidelity web interfaces using HTML5, CSS3, and JavaScript. - Backend Integration: Map frontend templates to backend logic, specifically managing Flask routes or Django views and ensuring data flows correctly between the user and the server. - Performance Optimization: Ensure all interfaces are responsive, cross-browser compatible, and optimized for speed. - Version Control: Manage codebase integrity using Git, participating in code reviews and collaborative development. - Deployment: Assist in managing application environments, particularly within cloud infrastructures. Qualifications - Required Skills: - Proven experience with Flask or Django. - Expert-level knowledge of HTML5, CSS3, and JavaScript. - Proficiency with Git (GitHub/GitLab). - Must be a US Citizen or Green Card holder currently residing in the United States. - Preferred Skills: - Experience deploying or managing applications on Google Cloud Platform (GCP). - A strong understanding of how to link frontend pages to backend functionality (API consumption, template engines like Jinja2, Kotlin, Swift). - Experience with design tools (Figma, Adobe XD) is a major plus. Benefits - Health, Dental, and Vision insurance. - Flexible work hours and remote work options. - FSA and HSA. - Life and Disability insurance. - Pet insurance, etc.

• Develop, optimize, and maintain scalable frontend applications using Angular as the primary framework • Implement responsive and accessible UI components using HTML, CSS, and TypeScript • Work with AWS services, including AWS Amplify, to integrate cloud-based functionalities into the frontend • Collaborate closely with backend engineers, UI/UX designers, and product teams to translate requirements into high‑quality user interfaces. • Ensure code quality through code reviews, clean coding practices, and adherence to development standards. • Optimize application performance and ensure cross-browser compatibility • Troubleshoot, debug, and resolve front-end-related issues • Participate in Agile ceremonies (planning, refinements, stand-ups, retrospectives)

Pay: $130,000.00 - $150,000.00 per year Job description: Senior Software Developer Constellation seeks a Senior Software Developer to join our Homeland Security Team. This role requires a strong front-end development background using React, along with hands-on Python experience for building data pipelines and automation workflows. The ideal candidate will help develop user-facing applications integrated with backend ETL processes that support operational reporting, data collection, and intelligent automation. This position involves close collaboration with analysts, engineers, and stakeholders to deliver mission-driven capabilities across multiple workstreams. Key Responsibilities: - Design, develop, and maintain modern web applications using React that integrate with backend data automation workflows. - Build and support Python-based ETL pipelines to extract, transform, and load data into the enterprise reporting platform. - Collaborate with automation engineers, analysts, and cloud engineers to design intuitive, data-driven user interfaces. - Integrate frontend components with APIs and automation services built using tools such as Apache Airflow and Databricks. - Participate in sprint planning and technical discussions to refine system designs and requirements. - Ensure data accuracy, performance, and maintainability across frontend and backend components. The ideal candidate must have the following experience, background, and credentials: - At least 5 years of experience in front-end development using React and hands-on experience using Redux for state management in production React applications - At least 2 years of experience developing Python scripts for automation or ETL workflows, including usage and familiarity with Pandas - Strong experience developing front-end applications using HTML, TypeScript, and CSS with a focus on responsive design and modern UI/UX - Strong understanding of RESTful APIs, React component design and common component libraries, and secure web development practices - Proficiency in writing unit tests using frameworks such as Jest - Experience working in a collaborative code environment and familiarity with Git, CI/CD pipelines, and modern development workflows - Bachelor’s degree in Computer Science, Software Engineering, or a related field - Be a U.S. citizen able to pass a background investigation by the client agency. DHS clearance with CBP/ICE or DoD Top-Secret preferred Job Type: Full-time Work Location: Remote Benefits: - 401(k) - 401(k) matching - Dental insurance - Disability insurance - Flexible schedule - Flexible spending account - Health insurance - Life insurance - Professional development assistance - Vision insurance Experience: - React: 3 years (Required) - Front-end development: 3 years (Required) - Python: 2 years (Required)