Web Application Developer Defense jobs in New York – Browse 2,325 openings on RoboApply Jobs

Web Application Developer Defense jobs in New York

Open roles matching “Web Application Developer Defense” with location signals for New York. 2,325 active listings on RoboApply Jobs.

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companyPalantir Technologies logo
Full-time|On-site|New York, NY

Join a Transformative CompanyAt Palantir, we develop cutting-edge software that empowers organizations to make data-driven decisions that can change the world. Our platforms are utilized to create life-saving innovations, anticipate supply chain challenges, and even aid in locating missing individuals, among other impactful missions.The OpportunityOur defense division is at the forefront of creating essential products tailored for the modern warfighter. We offer an integrated environment where clients can securely visualize and merge their data, enabling the development of comprehensive applications such as operational dashboards, alert management systems, and resource management tools powered by advanced machine learning models. Our defense solutions are indispensable for military command centers and operations globally, driving critical analyses that underpin their daily functions.As a Frontend Web Application Developer, you will play a pivotal role in crafting the applications that support our clients in safeguarding their nations. Your responsibilities will include designing and developing user-friendly interfaces that facilitate complex, data-driven workflows, ensuring accessibility for both technical and non-technical users. You will engage with end-users to identify their needs and address product gaps, collaborating with your team to devise solutions for intricate user experience challenges. You will tackle sophisticated technical issues by designing effective solutions and incrementally implementing new features. Additionally, you will manage APIs and schemas that enhance your frontend development and work closely with backend engineers to create seamless integrations. This role presents you with constant opportunities to explore new technologies and expand your skill set to meet real-world challenges, covering areas such as type theory, operational transformations, 2D/3D mapping, UI design systems, high-performance graphics rendering, and more.Key ResponsibilitiesIn this role, you will be involved in every stage of the product lifecycle, from conceptualization and design to development and deployment, ensuring our defense product offerings are top-notch.

Mar 5, 2024
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companyMerge API Integration Sandbox logo
Application Developer

Merge API Integration Sandbox

Full-time|On-site|Newyork

Join our dynamic team as an Application Developer, where your expertise will contribute to the design, development, testing, and maintenance of high-quality software applications. We are looking for a talented individual who enjoys working in an agile environment and has a passion for coding.Key ResponsibilitiesDevelop, test, and deploy applications that align with business requirements.Collaborate closely with cross-functional teams, including product managers, designers, and QA engineers.Create clean, scalable, and maintainable code adhering to industry best practices.Troubleshoot, debug, and enhance existing applications.Engage in code reviews and promote continuous improvement within the team.Integrate third-party APIs and services as needed.Maintain comprehensive technical documentation for architecture, design, and processes.Ensure the security, performance, and reliability of applications.Keep abreast of emerging technologies and industry trends.

Jan 26, 2026
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companyCity of New York logo
Full-time|On-site|New York City

Join the City of New York as the Director of Application Development, where you will lead the strategy and execution of software development initiatives that impact millions of residents. You will oversee a team of skilled developers, driving innovation and excellence in application design and implementation. Your role will be pivotal in enhancing the city's technological infrastructure, ensuring the delivery of robust and user-friendly applications.

Apr 10, 2026
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companyeproinc logo
Full-time|On-site|New York

Join eproinc as a Kdb Application Developer in the vibrant city of New York. You will be at the forefront of developing innovative applications using Kdb technology. This role provides an exciting opportunity to work on complex data challenges and contribute to the growth of our dynamic team.

Jul 8, 2015
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companyCity of New York logo
Application Developer

City of New York

Full-time|On-site|New York City

Role Overview The City of New York is hiring an Application Developer based in New York City. This position focuses on building and supporting software that helps city services run smoothly and reach residents effectively. What You Will Do Design, develop, and maintain applications that serve the city's diverse population Work closely with colleagues to deliver solutions that support public programs and services Use modern technologies to address real-world needs across city departments

Apr 17, 2026
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companyCGS Federal logo
Full-time|Hybrid|New York, NY

CGS Federal is looking for a talented Full Stack Web Developer to join our dynamic Information Technology team. This full-time, mid-level position involves developing software applications that support an enterprise-wide data inventory initiative. The role requires collaboration across various teams to create integrated solutions that address complex challenges. At CGS Federal, we unite skilled and innovative professionals to tackle pressing government issues using advanced technology. We seek individuals who are enthusiastic about contributing to governmental innovation, value teamwork, and possess the ability to anticipate the needs of others. We are committed to fostering a supportive environment that promotes professional development and growth through diverse learning opportunities.

Mar 16, 2026
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company
Full-time|On-site|Reports into Rochester, NY

Join our dynamic professional services team as a Senior Cloud Architect, where you'll spearhead the design and implementation of cutting-edge cloud-native applications tailored to our clients' needs. This role demands extensive knowledge in backend development, modern frameworks, and cloud-native architectures to facilitate client modernization projects. We seek a proactive architect and technical mentor who is passionate about driving innovation while delivering robust, secure, and maintainable solutions.Key Responsibilities and Performance Metrics:- Develop scalable, secure, and maintainable cloud-native applications that fulfill client specifications.- Produce and update application architecture documentation and design patterns.- Establish standardized frameworks and templates for various application development projects.- Facilitate technical discovery workshops and architecture review sessions with clients.- Provide hands-on leadership for complex application development initiatives.- Conduct code reviews to ensure compliance with coding standards and best practices.- Act as the primary technical advisor for application development engagements.- Perform application assessments and formulate modernization roadmaps.- Present technical solutions and strategic recommendations to client stakeholders.- Collaborate with sales and solutions teams to scope application development projects accurately.- Mentor junior and mid-level developers in modern application development methodologies.- Contribute to the internal knowledge base and documentation on development standards.- Ensure timely project delivery within budget while maintaining quality benchmarks.- Work closely with project managers to provide accurate effort estimates and technical insights.

Oct 14, 2025
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companyMerge API Integration Sandbox logo
Skilled Application Developer

Merge API Integration Sandbox

Full-time|On-site|new york

Join our dynamic team as a Skilled Application Developer, where you will be responsible for designing, developing, testing, and maintaining high-quality software applications. We are looking for an individual with strong programming skills, full-stack development experience, and a passion for collaboration in an agile environment.

Jan 31, 2026
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companyCity of New York logo
Full-time|On-site|Brooklyn

Role Overview The City of New York is hiring a GIS Application Developer based in Brooklyn. This position focuses on building and maintaining GIS applications that directly support city planning and public service projects. What You Will Do Design, develop, and maintain GIS software solutions Support city planning efforts and public service programs through technical expertise Create tools that help city teams operate more efficiently and deliver better services to residents Impact Work in a role where technical skills help shape city operations and contribute to improving daily life for New Yorkers.

Apr 15, 2026
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companyOmen logo
Full-time|On-site|New York City

Join Omen as a Frontend Web Developer and spearhead our web development initiatives, crafting innovative products from concept to launch. Collaborate closely with cross-disciplinary teams including design, product management, and internal platforms to deliver impactful features within dynamic product teams.As an integral member of our Genesis team, you'll contribute to developing a world-class tokenization and fund administration experience for Omen Genesis.Your ResponsibilitiesDevelop high-quality, performant web applications using React, TypeScript, and CSS-in-JS.Embrace ownership of features from design through implementation, serving as the web development expert.Enhance tools that streamline Omen's operations, wielding influence across the organization.Work in tandem with design and product professionals to quickly iterate and launch financial products.Create frameworks and abstractions that significantly empower fellow developers.Engage in backend development using TypeScript and AWS when necessary.Your QualificationsMinimum of 2 years of professional experience with modern web technologies and frameworks.Proficient in writing and debugging JavaScript in both Node.js and browser environments.Passionate about creating an exceptional developer experience.Demonstrated success in leading and delivering large-scale technical projects.Consistently uphold high standards for code quality, advocate for best testing practices, and enhance code review processes.Highly Preferred: Strong backend experience and knowledge, particularly in system design and high-performance backend systems, with familiarity in cloud interactions (potential for a full-stack role).

Dec 20, 2025
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companyCity of New York logo
Full-time|On-site|New York

Role overview The City of New York seeks a Senior Application Developer for a full-time, onsite position in New York. This role centers on designing, building, and maintaining software applications that help deliver city services and address public needs. What you will do Develop, test, and maintain software applications used by various city departments Use advanced programming skills to support technology projects throughout the city Contribute to technology solutions that enhance public services for New Yorkers Work location This position is based onsite in New York, NY.

Apr 25, 2026
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companySonsoft Inc. logo
Full-time|On-site|New York

We are seeking a skilled Java/J2EE Web Services Developer to join our dynamic team. In this role, you will be responsible for designing, developing, and implementing web services that integrate with various applications and platforms. Your expertise in Java and associated technologies will play a key role in delivering high-quality software solutions.

Aug 15, 2017
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companyHarvey logo
Full-time|On-site|New York

Role overview Harvey is looking for a Head of Web to guide web development efforts in New York. This leader will shape the direction of Harvey's web presence, managing design, implementation, and ongoing operations. The goal: deliver a smooth user experience and strong, modern features. What you will do Oversee all aspects of web design, build, and maintenance Work with teams across the company to ensure web strategies support business goals Drive improvements to Harvey's digital footprint and user experience

Apr 14, 2026
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company
Internship|On-site|Brooklyn

Are you a passionate coder eager to see your creations come to life? If you thrive in a fast-paced environment, possess a strong ability to learn quickly, and embrace new challenges with a critical and analytical mindset, then we have the perfect internship for you!

Jan 5, 2024
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companyClay Labs logo
Full-time|On-site|New York

Join Clay Labs as a Senior Web Developer, where you will play a pivotal role in enhancing our digital presence through growth and conversion optimization strategies. You will collaborate with cross-functional teams to design and implement innovative web solutions that drive user engagement and improve conversion rates.

Apr 3, 2026
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company
Full-time|On-site|200 Varick St #802, New York, NY 10014

Company Introduction:At Momenti, we believe in transforming the way content is experienced. Our mission is to make video interactive, creating immersive moments that resonate with users. Join us in revolutionizing content by blending technology with creativity, allowing every captured moment to come alive. Together, let’s break the fourth wall and innovate the future of visual storytelling.Job Overview:We are on the lookout for a passionate and skilled Junior Mobile Application Developer to become a part of our dynamic team in New York. The ideal candidate will play a pivotal role in developing cutting-edge mobile applications that enhance user experience and drive business success. You will be tasked with designing, developing, and maintaining hybrid mobile applications using Flutter.Key Responsibilities:• Design and implement processes, best practices, and tools for mobile application development, with a preference for Flutter expertise.• Engage in code refactoring to enhance application performance.• Collaborate with cross-functional teams to translate user and business requirements into functional frontend code.• Contribute to the design and implementation of innovative products.• Provide insightful feedback to improve features from both engineering and end-user perspectives.• Partner with other engineering teams to elevate technological standards and consistently apply best practices.• Continuously assess and enhance the efficiency, scalability, and stability of our systems.Preferred Qualifications:• Proven experience in Flutter development.• Familiarity with hybrid mobile frameworks such as React Native or Ionic.• Strong understanding of mobile device hardware capabilities and limitations.• Expertise in object-oriented programming, design patterns, and mobile application development.Basic Qualifications:• Bachelor's degree in Computer Science, Software Engineering, or a related discipline.• A minimum of 2 years of overall experience (at least 1 year in iOS/Android/Web development).• Proficiency in Flutter or a strong willingness to learn it.• Understanding of frontend frameworks beyond merely using libraries.• Experience handling traditional media formats such as photos or videos is a plus.• A proactive approach to learning and tackling challenges in a startup environment.• Excellent communication and problem-solving abilities.• Capability to work both independently and collaboratively in a team setting.• Adaptability to a fast-paced work environment with tight deadlines.• Ability to write robust, maintainable, and reliable code.

May 8, 2023
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companyInternational Research Institute for Climate and Society logo
Application Developer at Columbia University

International Research Institute for Climate and Society

Full-time|On-site|New York

Join Columbia University's prestigious International Research Institute for Climate and Society as an Application Developer. In this role, you will leverage your expertise to create innovative applications that support our research initiatives and contribute to global climate solutions.

Sep 4, 2015
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company
Front End Web Developer Internship

Harold Jean-Louis, Inc.

Internship|On-site|Brooklyn

Are you a passionate coder eager to see your creations come to life? If you're a quick learner ready to embrace new challenges, adaptable to various requirements, and possess strong critical thinking and problem-solving skills, this internship is the perfect fit for you!

Jan 5, 2024
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companySonsoft Inc. logo
Full-time|On-site|New York

Join our dynamic team at Sonsoft Inc. as a Java Developer specializing in Web Services. In this role, you will leverage your expertise in Java programming to design, develop, and maintain robust web services that drive our applications. You will collaborate with cross-functional teams to ensure high-quality software delivery while adhering to best practices and coding standards.

Dec 6, 2016
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companyCity of New York logo
Full-time|On-site|New York City

Join the City of New York as the Director of Applications Development, where you will lead a dynamic team in designing and implementing innovative software solutions that improve the lives of millions of residents. This is a pivotal role that requires strategic vision, technical expertise, and effective leadership.

Mar 31, 2026

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