187 python api developer jobs at 94 companies in Winchester, VA
1mo
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Python Developer
Chantilly, Virginia, United States
$104k-$218k/yr OnsiteFull Time
Active TS/SCI with Poly required; DoD 8570 IAT Level II (e.g., Security+ CE); Bachelor’s in CS/IT or related required; proficiency with Python, Git, SQL/PostgreSQL, AWS; experience with microservices, REST APIs, CI/CD, Docker, and AI-assisted development.
Python, Git, PostgreSQL, MySQL, SQL, AWS, Docker, CI/CD, Large Language Models (LLMs), Retrieval-Augmented Generation (RAG)
1w
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26-1106: Python Developer - Herndon, VA
Herndon, Virginia, United States
$110k-$150k/yr OnsiteFull Time
5+ YOEBachelor's or equivalent,5+ years Python development,experience with Flask or FastAPI,REST API design,relational and NoSQL databases,Git,CI/CD,Docker,Kubernetes,AWS,and secure coding for DoD environments.
Python, Flask, FastAPI, Git, CI/CD, Docker, Kubernetes, AWS
2mo
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Senior API Systems Engineer
Sterling, Virginia, United States
$150k-$254k/yr OnsiteFull Time
10+ YOEU.S. person with Top Secret/SCI polygraph clearance, 10+ years' relevant experience, Bachelor’s or Master’s in a STEM field, Security+ CE (DoDD 8140), 5+ years API gateway experience, proficiency with Java/Python/C#, cloud (AWS/Azure/GCP), Docker/Kubernetes.
Java, Python, C#, AWS, Azure, Google Cloud Platform, Docker, Kubernetes, Istio, Linkerd, MuleSoft, Apigee, Broadcom API, ServiceNow, Windows, Linux
1mo
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Python Software Developer
Herndon, Virginia, United States
OnsiteFull Time
3+ YOE3+ years Python development, experience with SQL, front-end/full stack, Git, Docker/Kubernetes, RESTful APIs, Linux/Unix; Bachelor's in CS or similar (or HS + additional experience); active TS/SCI with poly required.
Python, SQL, Git, Docker, Kubernetes, RESTful API, Linux/Unix, Node.js, Jenkins, GitLab CI, AWS, Azure, JIRA
2w
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Software Engineer (Python / TypeScript / AWS)
Herndon, Virginia, United States
OnsiteFull Time
3+ YOE3+ years enterprise software development; strong Python and TypeScript; hands-on AWS (Lambda, ECS Fargate, API Gateway, DynamoDB); GitLab and CI/CD; AWS CDK/CloudFormation; experience troubleshooting RAG/AI in secure environments.
Python, TypeScript, AWS Lambda, ECS Fargate, API Gateway, DynamoDB, AWS CDK, CloudFormation, GitLab, CI/CD, RAG
1mo
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Software Engineer (Full Stack & Python)
Chantilly, Virginia, United States
$94k-$198k/yr OnsiteFull Time
6+ YOETS/SCI with polygraph; Bachelor's in Computer Science; 6+ years software development; 4+ years full‑stack; 3+ years Python, REST APIs, JavaScript front-end frameworks; git, unit/integration testing, CI/CD experience.
Python, JavaScript, Angular, Vue, React, git, Jenkins, GitLab Runners, CI/CD, REST APIs, AWS, Agile
1w
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AI Automation Engineer / Developer
Frederick, Maryland, United States
OnsiteFull Time
Strong software development skills (e.g., Python, JavaScript/TypeScript), hands-on experience with AI tools (Claude) and automation, API integration experience, discretion with confidential client data, and ability to deliver production systems.
Claude, Python, JavaScript, TypeScript, APIs
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SME Systems Engineer- API Gateway & Cloud Architecture
Sterling, Virginia, United States
$180k-$230k/yr OnsiteFull Time
16+ YOEBachelor's in STEM, 16+ years' experience, DoD 8140/Security+ CE, 5+ years API Gateway experience (Broadcom preferred), expertise with Windows and cloud-hosted COTS, Java/Python/C#, AWS/Azure/GCP, Docker, Kubernetes, Agile, cloud architecture, troubleshooting, and system testing. TS/SCI w/ Poly required; U.S. citizenship required.
API Gateway, Broadcom API Gateway, MuleSoft, Apigee, Istio, Linkerd, ServiceNow, Docker, Kubernetes, Java, Python, C#, Windows, AWS, Microsoft Azure, Google Cloud, Message queues, Streaming platforms, ETL, COTS, MBSE
1mo
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GenAI Developer
Ashburn, Virginia, United States
HybridFull Time
7+ YOEU.S. citizen able to pass CBP background check; BA/BS preferred (experience considered); 7+ years full-stack development; React/Angular, SQL/NoSQL, Python/Java/JavaScript/TypeScript; GenAI concepts and APIs; AWS and Google cloud experience; DevSecOps knowledge.
React, Angular, SQL, NoSQL, Large Language Models (LLMs), transformers, Python, Java, JavaScript, TypeScript, AWS, Google Vertex AI, AWS Bedrock, GitLab, APIs, RESTful services, DevSecOps, CDNs
2mo
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Software Developer
Herndon or Chantilly
$185k-$240k/yr OnsiteFull Time
6+ YOEActive TS/SCI with Full-Scope Polygraph, 6+ years software development, experience with Java/Python/C++/JavaScript, APIs, Git, Agile; cloud, DevOps, containerization preferred.
Java, Python, C++, JavaScript, AWS, Azure, Docker, Kubernetes, Git, REST APIs, CI/CD Tools, DevOps
1mo
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ServiceNow Developer
Reston or Philadelphia
OnsiteFull Time
2+ YOEBachelor's degree preferred, 2+ years IT service management or enterprise app development, 1+ year ServiceNow development, experience with JavaScript/Python/Java, REST APIs, integrations, testing, and DevSecOps practices; must be authorized to work in the U.S.
ServiceNow, REST APIs, JavaScript, Python, Java, Flow Designer, Script Includes
1mo
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Agile Developer
Herndon or United States
RemoteFull Time
5+ YOEBachelor's degree in CS/IT/Engineering, 5+ years software development in Agile, experience with Java/C#/JavaScript/Python, web services/APIs, Git, CI/CD and DevSecOps, and knowledge of secure coding and federal cybersecurity.
Java, C#, JavaScript, Python, VistA, MUMPS, CPRS, AWS, Azure, Google Cloud, Docker, Kubernetes, React, Angular, Vue.js, HL7, FHIR, Git, CI/CD, DevSecOps
4w
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SME Systems Engineer - API (TS/SCI w/ CI Poly required)
Sterling, Virginia, United States
OnsiteFull Time
10+ YOEActive TS/SCI with CI poly, Security+ CE or higher, 10+ years relevant experience, STEM degree, API gateway expertise (5+ years), Java/Python/C# proficiency, cloud and containerization experience.
API gateway, Broadcom API, AWS, Azure, Google Cloud Platform, Docker, Kubernetes, Java, Python, C#, MuleSoft, Apigee, Istio, Linkerd, ServiceNow
2mo
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Applied AI Engineer
Fort Belvoir or Reston
$99k-$225k/yr HybridFull Time
3+ YOE3+ years in software engineering, applied AI/ML, or full-stack development; Python; API development; TS/SCI clearance; Bachelor's degree.
Python, FastAPI, Flask, Streamlit, Gradio, React, TypeScript
3w
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Software Engineer
Chantilly, Virginia, United States
$120k-$140k/yr HybridFull Time
5+ YOE5+ years software engineering experience; strong Python, object-oriented design, API development, Docker, Kubernetes, and messaging queue experience (RabbitMQ/ActiveMQ/Kafka).
Python, RabbitMQ, ActiveMQ, Kafka, Docker, Kubernetes, AWS, Redis
1w
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Software Engineer Level 4
Reston, Virginia, United States
OnsiteFull Time
9+ YOEActive TS/SCI with CI Polygraph; backend development, data engineering, API development with Python/FastAPI; PostgreSQL and Elasticsearch proficiency; experience with high-performance, high-volume systems.
Python, FastAPI, PostgreSQL, Elasticsearch, SQL
1mo
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GenAI Developer
Ashburn, Virginia, United States
$52-$94/hr OnsiteFull Time
7+ YOEU.S. citizenship and CBP background check, BA/BS or equivalent experience, 7+ years full-stack development (React/Angular, SQL/NoSQL), familiarity with LLMs and GenAI, Python/Java/JavaScript/TypeScript, cloud (AWS, Google), API and DevSecOps experience.
React, Angular, SQL, NoSQL, Python, Java, JavaScript, TypeScript, AWS, Google, Google Vertex AI, AWS Bedrock, GitLab, RESTful services, DevSecOps
3d
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Senior Developer
Herndon, Virginia, United States
OnsiteFull Time
10+ YOEActive US security clearance (TS/SCI with CI polygraph), 10+ years experience (or 15+ with BS), proficiency in Java/Python/C#, RESTful APIs, containerization, databases, Agile/DevSecOps.
Java, Python, C#, RESTful APIs, RDF, OWL, SPARQL, Docker, Kubernetes, OpenShift, CI/CD, Git
3w
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Applications Developer - Full Performance
Sterling, Virginia, United States
$64k-$128k/yr OnsiteFull Time
Experience developing and maintaining applications using RDS SQL, Solr, Python, Jenkins, REST APIs, AWS (EC2,S3,SQS,SNS), and frameworks like Spring Boot or NodeJS/NestJS; BS/BA or equivalent.
RDS SQL, Solr, Python, Jenkins, Rest APIs, EC2, S3, SQS, SNS, Spring Boot, NodeJS-NestJS
1d
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Principal Systems Engineer (API Gateway) - TS/SCI w CI Poly
Sterling, Virginia, United States
OnsiteFull Time
16+ YOEBachelor's degree and 16+ years designing enterprise systems, cloud architectures, and API solutions, including 5+ years with API gateways. Requires active TS/SCI with CI Polygraph and Security+ CE.
REST, GraphQL, AWS, Microsoft Azure, Java, Python, C#, Broadcom API Gateway, MuleSoft, Apigee, Istio, Linkerd, Google Cloud Platform (GCP), Oracle Cloud Infrastructure (OCI), IBM Cloud, ServiceNow, Windows