React.js Jobs in District of Columbia

Refine Results
261 - 280 of 769 Jobs

Senior Software Developer

QinetiQ US

•

Herndon, Virginia, USA

Full-time

Company Overview We are a world-class team of professionals who deliver next generation technology and products in robotic and autonomous platforms, ground, soldier, and maritime systems in 50+ locations world-wide. Much of our work contributes to innovative research in the fields of sensor science, signal processing, data fusion, artificial intelligence (AI), machine learning (ML), and augmented reality (AR). QinetiQ US's dedicated experts in defense, aerospace, security, and related fields a
Posted 60+ days ago | Updated 6 hours ago

Software Engineer (Java Full-Stack)

Computershare

•

Columbia, Maryland, USA

Full-time

Locations: Charlotte, NC; Columbia, MD or St. Paul, MN (Hybrid) In this position, you'll be based in any of the above noted offices for a minimum of three days a week, with the flexibility to work from home for some of your working week. Find out more about our flexible work culture at computershare.com/flex. We give you a world of potential Computershare has an exciting opportunity for a permanent full-time Software Engineer (Java) to join our Computershare Corporate Trust (CCT) Technology t
Posted 57 days ago | Updated 5 hours ago

Modernization Software Engineer - SWE1

Lockheed Martin

•

Maryland, USA

Full-time

Job ID: 693331BR Date posted: May. 23, 2025 Description:Who You Are: Here, you are going to provide life-cycle services to advance mission in support of Cybersecurity and SIGINT midpoint collection. You will modernize and sustain capabilities to include providing new features and enhancements to Front End Solutions systems. This will allow for products to work at-scale with processing of target communications across multiple types of Midpoint accesses. You will propel the customer into the nex
Posted 6 days ago | Updated 11 hours ago

Modernization Software Engineer - SWE1

Lockheed Martin

•

Maryland, USA

Full-time

Job ID: 693331BR Date posted: May. 23, 2025 Description:Who You Are: Here, you are going to provide life-cycle services to advance mission in support of Cybersecurity and SIGINT midpoint collection. You will modernize and sustain capabilities to include providing new features and enhancements to Front End Solutions systems. This will allow for products to work at-scale with processing of target communications across multiple types of Midpoint accesses. You will propel the customer into the nex
Posted 6 days ago | Updated 9 hours ago

Dot Net Architect--Part Time

Newt Global

•

Remote

Part-time

Key Responsibilities: Architectural Leadership Design and implement scalable, secure, and maintainable software architectures using .NET technologies (ASP.NET Core, .NET Framework). Define and enforce best practices, coding standards, and development processes to ensure high-quality deliverables. Provide end-to-end technical leadership on architecture, design, and implementation of full-stack solutions. Full-Stack Development Lead the development of backend services and APIs using C#, ASP.NET
Easy Apply
Posted 7 days ago | Updated 5 days ago

Software Engineer

Parsons Services Company

•

Annapolis, Maryland, USA

Full-time

In a world of possibilities, pursue one with endless opportunities. Imagine Next! When it comes to what you want in your career, if you can imagine it, you can do it at Parsons. Imagine a career working with exceptional people sharing a common quest. Imagine a workplace where you can be yourself. Where you can thrive. Where you can find your next, right now. We've got what you're looking for. Job Description: Parsons is looking for an amazingly talented Software Engineer to join our team! Wh
Posted 4 days ago | Updated 5 hours ago

Test Engineer, Intelligence Systems

Aduril Industries

•

Reston, Virginia, USA

Full-time

Anduril Industries is a defense technology company with a mission to transform U.S. and allied military capabilities with advanced technology. By bringing the expertise, technology, and business model of the 21st century's most innovative companies to the defense industry, Anduril is changing how military systems are designed, built and sold. Anduril's family of systems is powered by Lattice OS, an AI-powered operating system that turns thousands of data streams into a realtime, 3D command and c
Posted 30 days ago | Updated 5 hours ago

Jr. Full Stack Engineer

Leidos

•

Gaithersburg, Maryland, USA

Full-time

Leidos National Security Sector combines technology-enabled services and mission software capabilities in the areas of cyber, logistics, security operations, and decision analytics to support our defense and intel customers' mission to defend against evolving threats around the world. Our team's focus is to ensure our customers have the right tools, technologies, and tactics to keep pace with an ever-evolving security landscape and succeed in their pursuit to protect people and critical assets.
Posted 8 days ago | Updated 6 hours ago

Mobile Application Developer

Leidos

•

Ashburn, Virginia, USA

Full-time

The National Security Sector within Leidos is seeking a Mobile Application Developer to provide technical expertise on a mission-critical program whose purpose is to development, modernize, enhance, operate, and maintain services for DHS/CBP mission critical systems. Mobile App Developers requires a strong mix of communications skills and hands on technical trouble shooting to support application issues and application of preventative measures. In this hands-on position, you will work collabora
Posted 60+ days ago | Updated 6 hours ago

Enterprise Data Architect (Hybrid Work Schedule)

ICF

•

Remote or Reston, Virginia, USA

Full-time

ICF is actively recruiting for an Enterprise Data Architect who is customer-focused and passionate about helping the business modernize and transform their systems through pragmatic enterprise strategies. Utilizing the combined knowledge of technology and business, the candidate will become a trusted advisor to business partners and provide leadership to plan, acquire/develop, implement, and ultimately operate enterprise-wide solutions. You will work with a team of talented professionals, contri
Posted 59 days ago | Updated 6 hours ago

Full Stack Java Developer

Raas Infotek LLC

•

Remote or Houston, Texas, USA

Contract

Full Stack Java Developer (React & AWS) Senior (12+ Years Experience) Contract: W2 Only Job Description: We are seeking a highly experienced Full Stack Java Developer with deep expertise in React, AWS, and modern microservices architecture. This is a senior technical role demanding a proven track record of 12+ years in enterprise software development, including designing and building scalable, secure full-stack applications on AWS. You will lead the design, development, and optimization of compl
Easy Apply
Posted 6 days ago

Ruby on Rails Architect

Ohm Systems, Inc

•

Remote

Contract

ROR Architect:- As a hands-on architect, primary responsibilities center around design and development of web based, real-time and batch applicationsCollaborate with members of the design team both technical as well as business owners to identify requirements and design new products or extensions to existing products.Produce application prototypes with sufficient detail to allow others in the development team to complete the development work.Provide technical oversight to the development process
Easy Apply
Posted 39 days ago | Updated 28 days ago

Ruby on Rails Architect - Remote

Mudrasys

•

Remote

Contract, Third Party

Position: Ruby on Rails Architect Location: Remote Duration: 6-12months Job Description: Key Responsibilities: Develop and maintain robust, scalable, and secure applications using Ruby on Rails for backend and React for frontend.Design and implement RESTful APIs and integrate third-party services.Optimize application performance and troubleshoot/debug production issues.Collaborate with product managers, designers, and other developers to enhance user experience.Follow best practices in CI/CD, te
Easy Apply
Posted 57 days ago | Updated 22 days ago

Full Stack Software Engineer

Cymertek Corporation

•

Tysons, Virginia, USA

Full-time

Full Stack Software Engineer LOCATION Tysons, VA 22182 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are looking for a highly skilled Full Stack Software Engineer to join our team and contribute to the development of cutting-edge applications. In this role, you will work across the entire software development lifecycle, from designing user interfaces to implementing back-end functionality. You will collaborate with cross-functional teams t
Posted 60+ days ago | Updated 5 hours ago

Telecom System Integration Developer

Cyber Sphere LLC

•

Remote

Third Party, Contract

Telecom System Integration Developer Remote Long Term Contract Note - It s not a specific project Per se. It s a hodgepodge of custom integration request from the various lines of business within the Org. Someone with Developer skills set with experience doing contact center or unified communication integrations. Telephony, Cisco, etc More Developer than Telephony Key Responsibilities: Design, develop, test, and debug robust applications and system components aligned with business and technical
Easy Apply
Posted 7 days ago | Updated 5 days ago

Front End GUI Developer / Software Engineer

Cymertek Corporation

•

Tysons, Virginia, USA

Full-time

Front End GUI Developer / Software Engineer LOCATION Tysons, VA 22182 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are seeking a creative and detail-oriented Front End GUI Developer / Software Engineer to join our innovative team. In this role, you will design and develop intuitive, responsive user interfaces that deliver seamless user experiences. Collaborating closely with designers, backend developers, and stakeholders, you will transf
Posted 60+ days ago | Updated 5 hours ago

Modernization Software Engineer - SWE0

Lockheed Martin

•

Maryland, USA

Full-time

Job ID: 693329BR Date posted: May. 23, 2025 Description:Who You Are: Here, you are going to provide life-cycle services to advance mission in support of Cybersecurity and SIGINT midpoint collection. You will modernize and sustain capabilities to include providing new features and enhancements to Front End Solutions systems. This will allow for products to work at-scale with processing of target communications across multiple types of Midpoint accesses. You will propel the customer into the nex
Posted 6 days ago | Updated 11 hours ago

Modernization Software Engineer - SWE0

Lockheed Martin

•

Maryland, USA

Full-time

Job ID: 693329BR Date posted: May. 23, 2025 Description:Who You Are: Here, you are going to provide life-cycle services to advance mission in support of Cybersecurity and SIGINT midpoint collection. You will modernize and sustain capabilities to include providing new features and enhancements to Front End Solutions systems. This will allow for products to work at-scale with processing of target communications across multiple types of Midpoint accesses. You will propel the customer into the nex
Posted 6 days ago | Updated 9 hours ago

Full Stack Developer

Cymertek Corporation

•

Tysons, Virginia, USA

Full-time

Full Stack Developer LOCATION Tysons, VA 22182 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY Are you a versatile and innovative developer with a passion for both front-end and back-end development? We are seeking a skilled Full Stack Developer to join our team and contribute to the creation of dynamic, user-centric web applications. In this role, you'll work on a variety of exciting projects, utilizing your expertise to design and implement b
Posted 60+ days ago | Updated 5 hours ago

Modernization Software Engineer - SWE3

Lockheed Martin

•

Maryland, USA

Full-time

Job ID: 693716BR Date posted: May. 23, 2025 Description:Who You Are: Here, you are going to provide life-cycle services to advance mission in support of Cybersecurity and SIGINT midpoint collection. You will modernize and sustain capabilities to include providing new features and enhancements to Front End Solutions systems. This will allow for products to work at-scale with processing of target communications across multiple types of Midpoint accesses. You will propel the customer into the nex
Posted 6 days ago | Updated 11 hours ago