Python Software Engineer jobs in Leesburg

About the Role Lumbra is building Nebula, an agentic harness running as a set of microservices on managed Kubernetes, backed by managed databases, caching, and workflow orchestration, all provisioned with OpenTofu and deployed with Helm via CI/CD. We currently run on GCP but are not wed to any singl

JOB ID: 723008BR Date posted: Apr. 13, 2026 Description: Who we are Lockheed Martin is a global leader in aerospace, defense, and technology solutions. Our Manassas campus is a thriving center of engineering expertise, fostering a culture that encourages creativity, excellence, and the creation of e

Job Description RESPONSIBILITIES: Work under the supervision of senior developers. Learn communication protocol specifications used in the electrical utilities industry. Implement new features in software libraries and applications. Write test fixtures and unit tests to verify software performance.

At Two Six Technologies, we build, deploy, and implement innovative products that solve the world’s most complex challenges today. Through unrivaled collaboration and unwavering trust, we push the boundaries of what’s possible to empower our team and support our customers in building a safer global

Bridgecross LLC is seeking a Software Engineer V to support NOAA’s National Geodetic Survey (NGS). This role focuses on developing and modernizing scientific and geospatial applications supporting GNSS data systems and cloud-based platforms. Key Responsibilities Lead full Software Development Life C

Location: Chantilly, VA Salary: Negotiable Description: NOTE- This position requires an active Top Secret with SCI eligibility U.S. Security Clearance. The FishTools program seeks a hardworking, motivated, and creative full-stack software developer to engineer new solutions and capabilities for agil

M1 Technology

We're seeking a Software Engineer to provide support to a Sponsor mobility program that supports the lifecycle of intelligence products. Clearance Requirement : TS/SCI with Polygraph Required Qualifications Experience with Agile development methodology Experience with the development, maintenance, a

We're seeking a Software Engineer to provide support to a Sponsor mobility program that supports the lifecycle of intelligence products. Clearance Requirement : TS/SCI with Polygraph Required Qualifications Experience with Agile development methodology Experience with the development, maintenance, a

About the Role Lumbra is building Nebula, an agentic harness that transforms how analysts work with information, turning days of manual synthesis into minutes of AI-augmented insight. We're looking for a full-stack engineer to own features end to end across our Python backend and React frontend, shi

Date Posted: 2026-04-14 Country: United States of America Location: US-VA-STERLING-291 ~ 22640 Davis Dr ~ DAVIS Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain and maintain a U.S. government issued security clearance is required. U.S. c

At GEICO, we offer a rewarding career where your ambitions are met with endless possibilities. Every day we honor our iconic brand by offering quality coverage to millions of customers and being there when they need us most. We thrive through relentless innovation to exceed our customers’ expectatio

Job Number: R0233530 Software Engineer, Mid The Opportunity: As an AI software engineer, you know that good software is more than just a nice-looking interface and data. Today, you need to develop user-focused solutions that increase organizational efficiency and enable better decision-making. Booz

About us One team. Global challenges. Infinite opportunities. At Viasat, we’re on a mission to deliver connections with the capacity to change the world. For more than 35 years, Viasat has helped shape how consumers, businesses, governments and militaries around the globe communicate. We’re looking

Securiport

Job Summary: Securiport LLC is a US company based in Reston, VA, that specializes in the design and implementation of full solutions for border security. This includes passenger biometric recognition, immigration processing, advanced threat detection and screening, and intelligent information report

NVR, Inc. is seeking an experienced Full Stack Senior Software Engineer to work on site in Reston, VA. NVR’s technology teams thrive on providing multiple business lines with the tools and cutting-edge technologies that support NVR’s mission to create a better living experience for our customers. Jo

Position Title: Desktop Software Packaging Engineer (EOL Software Management) Location: Vienna, VA (Hybrid) Clearance Requirements: None Position Status: Contract Position Description: We are seeking a skilled Desktop Software Packaging Engineer to support an enterprise-wide End-of-Life (EOL) Softwa

We’re ALTEN Technology USA, an engineering company helping clients bring groundbreaking ideas to life—from advancing space exploration and life-saving medical devices to building autonomous electric vehicles. With 3,000+ experts across North America, we partner with leading companies in aerospace, m

Posted Date 4/13/2026 Description Senior Distinguished Software Engineer (Remote-Eligible) As a Sr. Distinguished Engineer at Capital One, you will be a part of a community of technical experts working to define the future of banking in the cloud. Our Distinguished Engineering team architects the st

Senior Distinguished Software Engineer (Remote-Eligible) As a Sr. Distinguished Engineer at Capital One, you will be a part of a community of technical experts working to define the future of banking in the cloud. Our Distinguished Engineering team architects the strategic modernization of core cred

NVR, Inc. is seeking an experienced Full Stack Senior Software Engineer to work on site in Reston, VA. The role involves designing and developing end-to-end solutions that integrate application workflows, data pipelines, analytics, and emerging AI capabilities to support critical business capabiliti