Top Senior Python Jobs in Washington, DC

Develop and maintain frontend and backend components across cloud-based full-stack applications for national security missions. Participate in agile teams, code, review, deploy, provide Tier 3 support, document deployments, and support off-hours releases while working primarily onsite.

The Principal Software Engineer builds and scales data pipelines for threat intelligence, ensures production reliability, and drives architectural improvements while collaborating across teams.

Lead electrical architecture, design, analysis, documentation, integration, testing, and iteration for spacecraft Fabship hardware. Own ECAD assemblies, PCBAs, power systems, RF, instrumentation, and mixed-signal interfaces from concept through qualification and flight. Perform reliability, radiation, EMI/EMC, derating, and environmental analyses; develop HITL and automated test capabilities; support manufacturing, suppliers, failure investigations, and design reviews. Mentor engineers and help establish electrical engineering standards in a fast-paced aerospace hardware environment.

Design and implement geospatial components of an agentic AI system: build ArcGIS-based import/validation/storage of authoritative hazard geometry, develop deterministic polygon validation and REST APIs, integrate LLM-driven geo-language features, implement secure gov-cloud hosting and audit logging, and coordinate with alerting SMEs and system agents to ensure standards-compliant, human-approved alert areas.

Build and productionize customer-facing data and AI solutions on Databricks. Own architecture and design decisions while delivering scalable data pipelines, applications, ML/AI integrations, and user interfaces. Lead technical project delivery, advise enterprise stakeholders, train customers, resolve implementation issues, and contribute reusable engineering assets and product feedback. The role requires strong cloud, distributed computing, software engineering, MLOps, documentation, and customer engagement skills, with travel to customers approximately 20% of the time.

Performs ETL, backend database, data warehouse, and data pipeline testing. Develops Python- and SQL-based automation frameworks, validates data transformations and quality across AWS and Databricks platforms, and executes integration, regression, performance, and reconciliation testing. Creates test plans, analyzes defects, supports Agile Scrum teams, and collaborates with developers, data engineers, and business analysts to deliver reliable enterprise data solutions.

As an AWS Developer, you will design and implement cloud solutions using AWS services, Java development, and web technologies while adhering to enterprise standards.

Own technical delivery for defense customers: integrate Navigator with existing logistics systems, build and optimize data pipelines, create onboarding playbooks and tooling, troubleshoot escalations, and feed customer needs into product roadmap while representing Gallatin on-site and at reviews.

As a Staff Software Engineer, you will lead the development of Apache Iceberg, enhancing data handling capabilities for large-scale systems, collaborating with teams, and architecting solutions for modern data lakes.

Design, build, and automate secure, scalable data pipelines and storage across classified and unclassified hybrid cloud environments. Lead data interconnectivity, ETL/ELT, cross-domain transfers, and advise as SME to ensure data availability for mission analytics while managing multiple agile projects.

Design, build, and deploy full stack web and mobile applications. Collaborate via GitLab, implement RESTful APIs, work with Python/SQL back-ends, leverage AWS services (S3, Lambda), research transportation solutions, meet tight deadlines, and contribute to product innovation and production deployments.

The GIS Analyst leads GIS solution development, analyzes database issues, manages reporting, and supports decision-makers with geospatial data management. Duties include mentoring staff, using GIS software, and creating maps and workflows using SQL and Python.

The Infrastructure Engineer will lead a project team to enhance Test and Production environments, providing technical support and strategy for infrastructure management.

Responsible for designing, developing, and maintaining cloud-native applications on AWS, focusing on Python and Angular. Involves leading technical efforts, ensuring security and compliance in federal environments, and collaborating in Agile teams.

Develop and maintain cloud-native applications using AWS and Python, build backend services, integrate RESTful APIs, and ensure compliance in a federal environment.

The role involves designing and executing automated testing frameworks, collaborating with stakeholders to develop test strategies, and ensuring software quality through comprehensive testing. Responsibilities include integrating tests into CI/CD pipelines and tracking defects in tools like Azure DevOps and Jira.

Seeking a Front End or Web Developer with 8+ years IT experience and 3+ years in front-end development using Java, Ruby on Rails, Python, and more. Must handle stakeholder evaluations and problem-solving. Agile familiarity required.

Seeking a Sr. Java Developer for the DevOps platform team to support Continuous Delivery practices, enhance delivery agility, and meet delivery milestones.

The Senior IT DevSecOps Engineer will design and manage secure cloud infrastructure, develop IaC, build CI/CD pipelines, ensure compliance, and collaborate with teams to deliver solutions.

Lead the design and implementation of cloud-native applications, mentor developers, ensure quality standards, and guide technical decisions in client projects.

The Full Stack Developer will automate processes, develop user applications and databases, and support deployment while collaborating within a product team using agile methodologies.

The Software Engineer, Mobile Transports will advance Ditto's mobile transport technologies focusing on networking performance and reliability across platforms. Responsibilities include designing, implementing, and optimizing mobile transport infrastructure, collaborating with teams, and monitoring system performance.

The Senior Full-Stack Software Engineer will design and develop software products, collaborate with data scientists, and instill development best practices.

Seeking a Site Reliability Engineer to manage AI platform reliability, automate tasks, optimize ML pipelines, and lead incident response in a hybrid engineering role.

Lead client engagements and design cloud-native enterprise architectures. Define data schemas, produce technical proposals, mentor teams, participate in development, support pre-sales, and ensure solutions are delivered to production using best practices.