Senior Front-End Software Development Engineer

Vantor; Herndon (VA); On-site; USD 137,000 - 200,200; Full time

Benefits offered by this job

401(k) with company match

Mental health resources

Student loan repayment assistance

Adoption reimbursement

Pet insurance

Job summary

Vantor in Herndon, Virginia is seeking a Senior Front-End Software Engineer to design intuitive web applications for big data analytics. Candidates must be U.S. citizens with an active government security clearance.

Responsibilities include developing high-performance user interfaces and collaborating with back-end teams. The estimated salary range is $137,000 to $200,200 annually, along with a competitive benefits package including a 401(k) match and unique perks.

Qualifications

• Minimum 14 years of professional experience in a technical role.
• Strong UI/UX skills focused on responsive interfaces.
• Proficient in front-end languages and data visualization.

Responsibilities

• Design modern web-based user interfaces for analytics applications.
• Build high-performance front-end solutions using JavaScript frameworks.
• Collaborate with teams to integrate APIs and data services.
• Develop dashboards for large datasets and participate in architecture discussions.

Skills

UI/UX design

JavaScript

Python

Java

R

React

Angular

Vue.js

RESTful APIs

HTML5

CSS3

Agile methodologies

Git

D3.js

AWS

Kubernetes

Education

Bachelor’s degree in Software Engineering or related field

Job description

Vantor is forging the new frontier of spatial intelligence, helping decision makers and operators navigate what’s happening now and shape what’s coming next. Vantor is a place for problem solvers, changemakers, and go-getters—where people are working together to help our customers see the world differently, and in doing so, be seen differently. Come be part of a mission, not just a job, where you can: Shape your own future, build the next big thing, and change the world.

Eligibility Requirements

• U.S. Citizen Only
• Active U.S. Government security clearance, TS/SCI with CI Poly level required; must be willing to obtain CI Poly if not already held.
• Position may be subject to U.S. export control laws; U.S. person status as defined by 8 U.S.C. 1324b(a)(3) may be required.

Job Summary

Senior Front‑End Software Engineer to support the development and modernization of a mission‑critical big data analytics platform for a United States Government customer. Design and build secure, scalable, intuitive web applications that enable analysts and decision‑makers to access, visualize, and interact with large‑scale datasets.

Principal 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

• Minimum 14 years of total professional experience in a technical support role.
• Strong UI/UX skills with focus on 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 related 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 Transparency

Starting pay for this role will fall within the listed range and will be based on factors such as experience, qualifications, skills, location, and market conditions.

• Base pay for this position within the Washington, DC metropolitan area: $137,000.00 – $182,000.00 – $200,200.00 annually.

Benefits

Vantor offers a competitive total rewards package that includes a robust 401(k) with company match, mental health resources, and unique perks such as student loan repayment assistance, adoption reimbursement, and pet insurance.

EEO Policy

Vantor is an equal opportunity employer committed to an inclusive workplace. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, sex, gender identity, sexual orientation, disability, protected veteran status, age, or any other characteristic protected by law.