Senior Software Engineer Python React jobs in Herndon

A leading aerospace and defense company in Maryland is hiring a Software Engineer to tackle cyber security challenges. Responsibilities include analyzing user requirements, debugging software, and integrating systems. The ideal candidate holds a bachelor's degree, has active security clearance, and

i3, LLC

A technology firm in Chantilly, Virginia, is seeking a Software Engineer to design, develop, and manage application development projects. The role requires proficiency in programming languages like Java and .NET, experience with Agile methodologies, and a solid foundation in relational databases. Id

A leading defense contractor in Maryland is seeking a Software Engineer to work on cybersecurity initiatives. The role involves analyzing user requirements, debugging software, and integrating systems. Candidates must have a Bachelor's degree and active security clearance. The position offers a comp

Key Qualifications 6 years of experience with designing and developing web services applications. Strong experience with providing and consuming web services APIs (REST, JSON, OpenAPISwagger). Experience with modern Python and frameworks (FastAPIFlask, SQLAlchemy Core, Pydantic, Httpx, Alembic, Pyte

Motion Recruitment Partners LLC

A profitable Washington DC–based startup is seeking a Senior Software Engineer to join its growing team. The company is developing a cutting-edge platform to support political campaigns by leveraging data-driven insights for enhanced voter engagement and smarter strategic decisions. Ideal candidates

TS/SCI W/ FSP Required Software Engineer (Chantilly location) The Sponsor is seeking to expand existing capabilities by augmenting its automated data collections development team with additional skilled developers capable of co‑locating with end‑users to rapidly develop and operate new techniques fo

A leading consulting firm is seeking a highly skilled Senior Software Developer to work in Rockville, MD. The position involves full stack software development using Python and React for web and mobile applications. You will collaborate with experts to translate complex workflows, design APIs, and d

About NDi Network Designs, Inc. (NDi) is a leading Federal contractor that specializes in designing, developing, and delivering information technology and network solutions for government customers. Founded in 1985, NDi's firmly defined core values have driven all aspects of the business, which have

A leading educational institution seeks an experienced Frontend Developer to create intuitive user interfaces and ensure exceptional user experiences. Responsibilities include managing data flow between backend services and applications, and implementing responsive design principles. Candidates shou

A leading technology firm is seeking an Automated Testing Software Developer in Reston, Virginia. This role involves developing test programs and maintaining automated test systems, primarily using LabVIEW and Python. Candidates must have a Bachelor’s degree and at least 6 years of relevant experien

A leading defense technology firm is seeking a software developer to join their autonomy engineering team in Columbia, MD. This role focuses on designing and developing control system software for unmanned systems. Ideal candidates should have significant experience in embedded software programming,

CVS Health

We're building a world of health around every individual - shaping a more connected, convenient and compassionate health experience. At CVS Health®, you'll be surrounded by passionate colleagues who care deeply, innovate with purpose, hold ourselves accountable and prioritize safety and quality in e

CVS Health

We're building a world of health around every individual - shaping a more connected, convenient and compassionate health experience. At CVS Health®, you'll be surrounded by passionate colleagues who care deeply, innovate with purpose, hold ourselves accountable and prioritize safety and quality in e

Capital One National Association

Senior Software Engineer, Front End (Angular, React). Do you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive, and iterative delivery environment? At Capital One, you'll be part of a big group of makers, br

Compunnel, Inc.

A leading technology firm in McLean, Virginia is seeking a highly skilled Senior Software Developer / Data Engineer. This role requires strong experience in Python and SQL to develop data pipelines and manage data streaming solutions. Candidates should have 6–8+ years in software development and fam

Belay Technologies has been voted Baltimore Business Journal's (BBJ) Best Places to Work 2019, runner up in 2020 and a finalist in 2021! Belay Technologies is seeking a Senior Software Engineer to join our intel team. The ideal candidate will have advanced expertise in Python development, cloud tech

Senior Software Engineer - Full Stack (Python + Spark) Do you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive, and iterative delivery environment? At Capital One, you'll be part of a big group of makers, b

Belay Technologies

Senior Software Engineer Belay Technologies is seeking a Senior Software Engineer to join our intel team. The ideal candidate will have advanced expertise in Python development, cloud technologies, and DevOps best practices. This role requires a problem-solver passionate about building scalable, hig

Acclaim Technical Services

Acclaim Technical Services,founded in 2000, is a leading cyber operations, intelligence solutions and operations, network infrastructure, engineering and business enablement and enterprise operations company supporting a wide range of U.S. Federal agencies. We are an Employee Stock Ownership Plan (E

Erias Ventures was founded to serve its customers with an entrepreneurial mindset. We value creative problem-solving , open communication , and empowering our employees to make decisions and put forth new ideas. Our staff includes technical experts working across multiple disciplines, bringing diver