Python Software Developer Jobs in Gainesville, VA, US

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Cleared Junior Software Engineer

Annapolis Junction, Maryland, United States

OnsiteFull Time

Yellow Duck Technologies: Engineering mission-critical software and systems for the intelligence community.

3+ YOEActive TS/SCI clearance with Full Scope Polygraph; 3+ years of experience; bachelor's degree in a technical discipline; experience with Python, JavaScript, or Java; familiarity with databases and version control; strong communication.

Python, JavaScript, Java, Databases, Git

1mo

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1mo

Full Stack Software Engineer, Developer (Experienced or Senior)

Chantilly or Seal Beach

OnsiteFull Time

BoeingNYSE: BA: Designs, manufactures, and sells aircraft, satellites, and defense systems.

5+ YOE5+ years in OO design and Java/C++/Python; full-stack Java development; active Top-Secret/SCI eligibility with CI poly; aerospace/space domain experience preferred.

Java, C++, Python, Spring, Hibernate, JDBC, REST/Open API, Jenkins, GitLab CI, Maven, Gradle, SQL, NoSQL, WebLogic, JMS, HTML, CSS, JavaScript, React, Open Layers

2mo

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2mo

Software Engineer II (Fullstack, Business Systems)

Boston, Massachusetts, United States

$125k-$175k/yr OnsiteFull Time

WHOOP: Sells wearable health trackers and performance analytics subscriptions.

2+ YOEBS in Computer Science or related field; 2–4 years software development; API design/integrations; relational DB design; production web apps; strong communication; AI tooling aptitude.

Python, Java, JavaScript, TypeScript, APIs, Relational databases, Data modeling, Booth systems integrations, NetSuite, Salesforce, Stripe, Boomi

2mo

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2mo

Cleared Senior Software Engineer

Dahlgren, Virginia, United States

$130k-$175k/yr OnsiteFull Time

Astrion: Provides mission-critical engineering and support services to government agencies.

10+ YOESenior software engineer with 10+ years, BS in CS/CE, active Secret clearance preferred; lead and mentor teams; C++ (C11), OO, QA, multi-threading, Agile.

C++ (C11), Python, Git, Subversion, Mercurial, Visual Studio, NetBeans, Eclipse, Jira, Bugzilla, MPI, POSIX, OpenMP, SSE

2mo

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2mo

Software Engineer, Backend - AI Practice Team

Houston or Knoxville or Washington

$90k-$150k/yr OnsiteFull Time

American Bureau of Shipping: Global maritime classification and technical safety service provider.

8+ YOE8+ years backend development; Go and Python; cloud deployment; Kafka; distributed systems patterns; performance optimization; Docker/Kubernetes; Databricks.

Go, Python, Kafka, Docker, Kubernetes, Databricks

1mo

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1mo

Advisor Software Engineer (AWS)

Reston or Plano

$155k-$209k/yr HybridFull Time

Fannie MaeOTCQB: FNMA: Providing liquidity and stability to the U.S. housing market.

6+ YOE6+ years Java development; AWS and AI/ML exposure; strong design/architecture; Angular; stakeholder collaboration; mentoring; observability and SDLC expertise.

Java, Angular, Python, AWS, TensorFlow, PyTorch

2mo

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2mo

DevOps Software Engineer, Senior

Annapolis Junction, Maryland, United States

$100k-$275k/yr OnsiteFull Time

Navstar: Provides IT and cybersecurity solutions to the intelligence community.

7+ YOEActive TS/SCI clearance with Polygraph; 5+ years in DevOps tools, CI/CD; system administration; experience with Java, Groovy, Python, PowerShell, Bash, JavaScript; Windows and Linux; container platforms; strong communication; ability to work independently.

Java, Groovy, Python, PowerShell, Batch, Bash, JavaScript, AngularJS, Eclipse, Visual Studio Code, Visual Studio, Rhapsody, WebStorm, Git, CI/CD Tools, Docker, Kubernetes, Oracle, PostgreSQL, MongoDB, SQL Server

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Senior Cloud Software Engineer

Annapolis Junction, Maryland, United States

OnsiteFull Time

Envision Innovative Solutions: Provides technical engineering and mission support to government agencies.

8+ YOEEight years software engineering experience; two years in Big-Data cloud; BS in CS; Cloudera Hadoop Dev cert; IR and cloud experience; Java, MapReduce; TS/SCI with Full Scope Poly.

Java, Eclipse, Maven, RESTful services, Hadoop, HDFS, HBase, Zookeeper, MapReduce, Apache Lucene, Apache Solr, MongoDB, Python, Bash, Ruby, XML, JSON, CSV, Avro

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Automated Testing Software Engineer (mid-level)

Dahlgren, Virginia, United States

$92k-$135k/yr OnsiteFull Time

SimVentions: Provides engineering and technology services for defense customers.

5+ YOE5-8 years of professional software development and automated testing experience; on-site at Dahlgren, VA; DoD/Secret clearance required.

Python, C++, Git, GitLab, Docker, Jenkins, RedHat Linux, Rust, Automated testing frameworks

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Software Engineer - Federal Geospatial (Hub-Remote: DC or Philly Metro)

Alexandria or Philadelphia

$105k-$141k/yr RemoteFull Time

Element 84: Builds cloud-native geospatial software and data processing pipelines.

5+ YOE5+ years software engineering; full-stack Python/JavaScript; Clojure; React; AWS S3/IAM/Lambda; NOAA CAC badge; remote Scrum; BS in technical field.

Python, JavaScript, Clojure, React, AWS, S3, IAM, Lambda, Node.js, MacOS X

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Software Engineer II, AI

Washington, District of Columbia, United States

$144k-$160k/yr RemoteFull Time

AARP: Nonprofit advocacy organization serving Americans aged 50 and older.

Bachelor's degree in IT/CS/Engineering; 2+ yrs Generative AI; 3+ yrs cloud (AWS); 4+ yrs DevOps; 2+ yrs agentic systems; 3+ yrs distributed cloud-native; 4+ yrs programming (Python/Java/Rust/SQL/Node.js).

AWS, GitHub, Bitbucket, AWS CloudFormation, AWS Lambda, AWS EKS, S3, LangGraph, Python, Java, Rust, SQL, Node.js

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Jr Full Stack Developer (Python/React.js)

Reston, Virginia, United States

$70k-$100k/yr OnsiteFull Time

Inadev: Provides digital engineering and AI solutions to government and businesses.

2+ YOEBachelor's in CS/Engineering; 2+ yrs Python and React; experience with AI-assisted development; microservices; Agile/Jira; US citizen; located in DC metro area.

Python, React.js, GitHub Copilot, Microservices, JIRA, AWS, Docker, Kubernetes, PostgreSQL, MongoDB, DynamoDB

1mo

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1mo

Senior Software Automation Testing Engineer

Ashburn, Virginia, United States

$85k-$100k/yr HybridFull Time

Vastly AI: Provider of custom AI, machine learning, and IT solutions.

5+ YOE5+ years in software testing; strong Python 3.8+; web frameworks (FastAPI, Django, Flask); REST API testing; AWS; automation; SQL; Git/Jenkins/Harness; Locust.

Python, FastAPI, Django, Flask, pytest, unittest, Locust, Gitlab, Harness, Jenkins, Oracle, Postgres, SQL, AWS

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Software Engineer III - Back End (Remote)

McLean, Virginia, United States

$120k-$132k/yr RemoteFull Time

Ad Hoc: Providing user-centered digital services to federal government agencies.

5+ YOE5+ years engineering experience; backend web development; RESTful APIs; open source stack; Git; SQL/NoSQL databases; Agile; TDD.

Ruby, Python, Django, Rails, REST, Git, GitHub, Elasticsearch, Solr, SQL, NoSQL

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Sr. Developer w/Analytics

Crystal City or United States

$100k-$150k/yr RemoteFull Time

Applied Information Sciences: Delivers cloud transformation and software engineering services to organizations.

5+ YOE5+ years software development experience with analytics; strong Python, SQL, data warehouses/lakes, Spark/Databricks, Elasticsearch; DHS Public Trust eligibility; US citizenship.

Python, SQL, PostgreSQL, Oracle, Data Warehouses, Data Lakes, Apache Spark, Databricks, Elasticsearch

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Sr Software Engineer - Platform Data Query

San Diego or Santa Barbara or Dallas or Atlanta or Chicago or San Francisco or Washington DC or Denver

$138k-$173k/yr HybridFull Time

AppFolioNASDAQ: APPF: Provides cloud-based property and investment management software.

5+ YOEExperience operating, scaling, and enhancing data pipelines with Iceberg, Trino, Kafka, Flink; strong SQL and cloud data services (AWS). 5+ years in software engineering; multi-tenant SaaS background preferred.

Trino, Apache Flink, Kafka, Iceberg, AWS Athena, AWS S3, AWS Glue, Python, Ruby, Java, JavaScript, C#, SQL

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Software Engineer/Data Manager

Alexandria or Quantico

OnsiteFull Time

JASINT: Providing cybersecurity and technical services for national security missions.

8+ YOESenior Software Engineer with data management expertise; 8+ years experience; TS/SCI with poly is required.

Python, Java, C++, SharePoint, PowerPoint, Visual Studio

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IT Spec (APPSW) "Principal Software Engineer", GS-2210-15, FPL GS-15 (DH), Full-time

San Francisco or Denver or Washington or Atlanta or Chicago or Salt Lake City or Seattle

$150k-$197k/yr RemoteFull Time

Federal Student Aid: Administers federal student loans and financial aid programs.

1+ YOESenior software engineer with cloud-native design, CI/CD, and cross-language development (Python, Java, JavaScript); leadership and architectural responsibilities.

Python, Java, JavaScript, CI/CD, Infrastructure as Code, Cloud platforms

2mo

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2mo

Senior Staff Software Engineer

Boston or Brooklyn or San Francisco or Washington

$225k-$265k/yr HybridFull Time

Altana: AI-powered network platform for global supply chain visibility.

12+ YOE12+ years backend or data-driven software; cloud deployments; lead engineers; strong communication; ownership of architecture and delivery.

Python, TypeScript, SQL, Docker, Git, Kubernetes, FastAPI, AWS, Azure, MLFlow, Temporal, Postgres, Databricks, OpenSearch

2mo

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2mo

Forward Deployed Software Engineer - Tactical Edge

Washington, District of Columbia, United States

$135k-$200k/yr OnsiteFull Time

PalantirNasdaq: PLTR: Builds software for data-driven decisions and operations.

Active US security clearance (Top Secret) or willingness to upgrade; strong software engineering background; experience with containers and orchestration; proficient in Python/Java/JavaScript/Bash; comfortable collaborating with customers; willingness to travel ~25%.

Docker, Podman, OpenShift, Kubernetes, Python, Java, Bash, JavaScript, Go, Linux, Networking, On-premise infrastructure

1mo

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1mo

AI Software Engineer - Mid Level

Scottsdale or Pittsburgh or Bloomington or Chantilly or San Jose or United States

$124k-$138k/yr RemoteFull Time

General Dynamics Mission SystemsNYSE: GD: Engineers secure communication and mission-critical defense technology systems.

5+ YOEBachelor's degree in software engineering or related field; 5+ years experience or Master's with 3+ years; Agile experience preferred; US citizenship required.

Python, REST APIs, LLM API, Azure, SharePoint, Microsoft Graph API, Git, Docker, Kubernetes, PostgreSQL, LangChain, LangGraph, CrewAI, AutoGen, Pinecone, Weaviate, Qdrant, pgvector

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Consulting/Principal Software Engineer LNSSI

Washington or Virginia

$118k-$220k/yr OnsiteFull Time

LexisNexis Risk SolutionsNYSE: RELX: Provides data and analytics for risk management and compliance.

2+ YOE2-3 years Linux systems administration; scripting in SQL/BASH/PYTHON/PHP/PERL; TS/SCI clearance with polygraph; B.S. in Computer Science or MIS; experience with big data systems.

SQL, BASH, PYTHON, PHP, PERL, ECL, HPCC

1mo

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1mo

Mid Level Developer

Rosslyn, Virginia, United States

OnsiteFull Time

ActioNet: Provides IT modernization and cybersecurity services to government agencies.

3+ YOEBachelor’s degree in Computer Science or Information Technology; 3–7 years software development experience; proficient in Python, Java, or C#; familiarity with Agile/Scrum/SAFe; API and database experience; strong problem-solving and communication skills.

Python, Java, C#, REST, SQL, NoSQL

1mo

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1mo

Staff Software Engineer, Public Sector

San Francisco or St. Louis or New York or Washington

$189k-$362k/yr HybridFull Time

Scale AI: Provides data and infrastructure for training artificial intelligence models.

Experience in full stack development, cloud platforms, data engineering, AI integration, strong problem solving, collaboration, and learning agility; mentoring.

Docker, Kubernetes, AWS, Azure, GCP, ETL, Data Warehousing, Data Governance, LLMs, RAG, Agent Orchestration, Python, JavaScript

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Cloud Software Engineer CSWE3 - 27154

Hanover, Maryland, United States

OnsiteFull Time

PAX Engineering: Provides software and systems engineering for the intelligence community.

Experience with front-end (Javascript/React) and back-end (Node.js, Python, Rust); microservices (Kubernetes, Helm); cloud migration; databases (MySQL, Redis, Neo4j); messaging (RabbitMQ/Kafka); testing (Jest); and related devops tools.

Kubernetes, Helm, Terraform, Ansible/Salt, Grafana, InfluxDB, Elasticsearch, Redis, MySQL, Neo4j, RabbitMQ, Kafka, NiFi, Superset, React, Javascript, Typescript, Node.js, Python, Rust, Shell, WebSockets, JBLOCKS, CASPORT, CAMKEY, LAC, COI

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Consulting/Principal Software Engineer LNSSI

Washington or Virginia

$118k-$220k/yr OnsiteFull Time

RELXLondon Stock Exchange: REL: Provides information-based analytics and decision tools for professional customers.

2+ YOESecurity clearance TS/SCI with full-scope poly; BS in CS/MIS or related; 2-3 years Linux admin; scripting (SQL, Bash, Python, PHP, Perl); data analysis and scripting for big data systems

SQL, Bash, Python, PHP, Perl, ECL, HPCC, Kubernetes, AWS

1mo

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1mo

Forward Deployment Software Engineer

Reston, Virginia, United States

$200k-$288k/yr HybridFull Time

SnowflakeNYSE: SNOW: Provides a cloud-based platform for data storage and analysis.

7+ YOE7+ years in distributed systems; container orchestration; IaC (Terraform/Pulumi); CS fundamentals; Java/C++/Golang/Python; public cloud experience; TS/SCI with Polygraph clearance; US citizenship; advanced degree in CS.

Terraform, Pulumi, Kubernetes, Cloud Platforms (AWS, Azure, GCP), Java, C++, Go, Python

1mo

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1mo

Principal Software I&T Engineer (Contract)

Arlington or Denver or Houston or Merritt Island

RemoteContract

Airbus U.S. Space & DefenseEuronext Paris: AIR: Provides satellite, helicopter, and cybersecurity solutions for U.S. defense.

15+ YOEEmbedded software, testing, and flight software development; 15+ years experience with B.S. or 12+ with M.S.; US citizenship; ability to obtain clearance; periodic travel.

C/C++, TCL, Python, Embedded software development and testing, RTOS, Device driver development, GNC algorithms, Software safety assurance, Test scripting, Simulators, HIL

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Sr. Software Engineer II (6520)

Tysons Corner, Virginia, United States

$142k-$195k/yr OnsiteFull Time

MetroStar: Provides digital transformation and IT services to government agencies.

7+ YOEBachelor's degree in CS/IT/Engineering or equivalent; Secret clearance; 7+ years IT; 6+ years full stack with AWS; 3+ years Go/Python/Java/JavaScript/React/Angular/TypeScript/NextJS; IL6+ AWS; strong data, security, and deployment experience.

AWS, Python, Go, Java, JavaScript, React, AngularJS, TypeScript, NextJS, DevSecOps

1mo

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1mo

Junior Software Engineer

Ashburn, Virginia, United States

OnsiteFull Time

Cardinal Technology Systems: Provides cybersecurity and IT solutions to government agencies.

3+ YOEBachelor’s degree required; 3+ years experience; CBP suitability eligibility; databases, web apps, and interfaces; strong communication.

Python, SQL, Java

1mo

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1mo

Senior Software Engineer

Gaithersburg, Maryland, United States

OnsiteFull Time

Chenega Corporation: Provides professional government, defense, and facility support services.

8+ YOEBachelor’s or Master’s degree in CS/Engineering with 6+ years (Master’s) or 8+ years (Bachelor’s); TS/SCI clearance; strong OO programming, REST, SQL, Linux; AWS, Agile.

Java, Python, REST, SQL, Linux, Docker, OpenShift, Spring Boot, PostgreSQL, Tomcat, Maven, AWS, GitLab CI/CD, JavaScript, Front-end frameworks

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Principal Software Engineer

Herndon, Virginia, United States

$139k-$185k/yr RemoteFull Time

ATPCO: Global repository for airline pricing and merchandising data.

5+ YOELead design and build of a high-performance pricing engine; expert in distributed systems and modern languages.

C/C++, Rust, Go, Python, Linux, Distributed systems, APIs, Zero-copy, Lock-free data structures

1mo

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1mo

Software Engineer-Multiple Levels (DT-0/1/2)

Annapolis Junction, Maryland, United States

$170k-$230k/yr OnsiteFull Time

Legato: Delivers IT engineering and cybersecurity services to defense agencies.

7+ YOEC++, Java, Linux; Python/JavaScript; Git/GitLab; Agile; 7+ years; BS in related field or 11 years experience in lieu.

C++, Java, Linux, Python, JavaScript, Git, GitLab, VSCode, Eclipse, Jira, Confluence

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Senior Software Engineer III (Government)

Columbia, Maryland, United States

$89k-$208k/yr OnsiteFull Time

AT&TNYSE: T: Provides wireless and fiber optic telecommunication services.

8+ YOEBachelor's degree; 8 years experience; .NET, Java, Python, C# skills; TS/SCI clearance.

.NET, ASP.NET, C#, Java, Python, Oracle

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Software Engineer - AI (Legal) – CoCounsel Forward Deployed Engineering

Frisco or New York City or Washington or Ann Arbor or Eagan

$95k-$203k/yr HybridFull Time

Thomson ReutersNASDAQ: TRI: Provides professional software, data, and news services globally.

2+ YOE2–4 years software engineering experience; Python; AI/ML tooling; API integrations; legal domain interest; strong communication; hybrid work.

Python, OpenAI, Anthropic, AWS, Azure, GCP, Containers, LLM APIs, Vector databases

1mo

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1mo

Senior Software Engineer (TS/SCI w/poly)

Fort Meade, Maryland, United States

$250k-$295k/yr OnsiteFull Time

SIXGEN: Provides advanced cybersecurity services and products for national security.

14+ YOESenior Software Engineer with TS/SCI w/poly clearance; 14+ years software engineering or 18+ years without degree; BS in CS preferred.

Java, JavaScript, Git, SQL, Python, SDLC, UI/UX, Angular, React, Vue.js, AWS, C#, API Development

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AI Analytic Software Engineer-Senior

Annapolis Junction, Maryland, United States

OnsiteFull Time

NetSage: Delivering specialized cyber services to the U.S. federal government.

8+ YOESenior AI analytic engineer with TS/SCI clearance, Python/Java, cloud platforms, governance, and strong analytics experience.

Python, Java, Jupyter, Kubernetes, Docker, Elasticsearch, Git, GitLab, Hugging Face, PySpark

1mo

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1mo

SME Full Stack Developer - Java/Python , Clearance Required

Ashburn, Virginia, United States

HybridFull Time

SourceFly: We provide IT services and workforce solutions to government clients.

5+ YOE5+ years’ full-stack development with Java/Python; security clearance (Secret); government/military domain experience.

Java, Python, Spring Boot, Docker, Kubernetes, REST, React, Angular, Vue.js, Jenkins, Gitlab CI, Harness, gRPC, RabbitMQ, Kafka, AWS, PostgreSQL, Oracle, Elasticsearch, Solr, Hadoop, Spark

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Mission Systems Software Test Engineer II

Reston, Virginia, United States

OnsiteFull Time

Blue Origin: Develops reusable rockets and systems for human spaceflight.

BS in engineering or physics; software testing experience; space systems knowledge; programming in Python/Golang/Rust/C++ ; cloud experience; strong communication.

AWS, Azure, Confluence, JIRA, Git, Python, Golang, Rust, C++