Front-End Software Development Engineer

About the role

Vantor is seeking a Front-End Software Engineer to support the development and modernization of a mission-critical big data analytics platform for a United States Government customer. The successful candidate will design and build secure, scalable, and intuitive web applications that enable analysts and decision-makers to access, visualize, and interact with large-scale datasets. This role requires close collaboration with product owners, UX designers, back-end engineers, data engineers, and cybersecurity personnel within an Agile development environment.

Responsibilities

• Design, develop, test, and maintain modern web-based user interfaces for enterprise-scale analytics applications.
• Build responsive, accessible, and high-performance front-end solutions using contemporary JavaScript frameworks.
• Collaborate with back-end and data engineering teams to integrate APIs, data services, and visualization components.
• Develop dashboards, reporting tools, and interactive data exploration capabilities for large and complex datasets.
• Participate in architecture discussions and contribute to front-end technical strategy and best practices.
• Ensure compliance with government security, accessibility, and software quality requirements.
• Perform code reviews, mentor junior developers, and promote engineering excellence across the team.
• Support Agile ceremonies, including sprint planning, backlog refinement, and retrospectives.
• Troubleshoot and resolve production issues while continuously improving application performance and usability.
• Work at corporate office site 3 days per week.
• Work in a SCIF as program and team needs dictate.

Required Qualifications

• US citizenship and an active TS/SCI clearance is mandatory for this position and required for consideration.
• Must be willing to obtain a CI Poly.
• Minimum of 4 years of total professional experience in a technical support role.
• Strong UI/UX skills with a focus on building responsive, user-friendly interfaces.
• Proficient in front-end and scripting languages such as JavaScript, Python, Java, and R; experienced in data extraction, manipulation, and visualization.
• Experience with modern front-end frameworks such as React, Angular, or Vue.js.
• Experience consuming RESTful APIs and working with JSON-based data services.
• Strong understanding of HTML5, CSS3, responsive design, and web accessibility standards.
• Experience with state management, component-based architectures, and front-end build tools.
• Familiarity with Agile software development methodologies and DevSecOps practices.
• Experience using Git-based source control and CI/CD pipelines.
• Experience designing software solutions with geospatial data types/formats and standards.
• Bachelor's degree or equivalent experience in Software Engineering, User Interface Design, Graphics, or like technical fields.

Preferred Qualifications

• Experience supporting federal government, defense, intelligence, or national security programs.
• Experience developing user interfaces for big data, analytics, AI/ML, or data visualization platforms.
• Proficiency with data visualization libraries such as D3.js, ECharts, Plotly, or similar technologies.
• Experience with cloud-native environments, including AWS, Azure Government, or Kubernetes-based platforms.
• Familiarity with microservices architectures and API-driven application design.
• Experience with automated testing frameworks such as Jest, Cypress, Playwright, or Selenium.
• Strong oral and written communication skills.

Pay

The base pay for this position within the Washington, DC metropolitan area is: $116,000.00 – $154,000.00 – $169,400.00 annually. For all other states, we use geographic cost of labor as an input to develop market-driven ranges for our roles, and as such, each location where we hire may have a different range.

Benefits

• Robust 401(k) with company match.
• Mental health resources.
• Student loan repayment assistance.
• Adoption reimbursement.
• Pet insurance.