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Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Node.js, Python, Elasticsearch, Redis
16h
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Senior API Developer
Maryland, United States
OnsiteFull Time
5+ YOE5+ years experience building REST APIs with Java, Spring Boot, Postgres SQL; experience with AWS, containers, CI/CD pipelines, and healthcare data (FHIR) preferred.
Java, Postgres SQL, Spring Boot, AWS, Argo/CD, EKS, Tekton, ReactJS, NextJS, FHIR
1mo
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API Developer/Programmer
Aberdeen Proving Ground, Maryland, United States
$90k-$150k/yr OnsiteFull Time
2+ YOEBachelor's degree in a technical field and 2+ years experience. Experience with web/API development, MongoDB, PostgreSQL, Microsoft Azure, Keycloak, Java, cloud/containerization, information systems security, and Agile.
MongoDB, PostgreSQL, Microsoft Azure, Keycloak, Java
4w
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Senior Backend API Engineer
Linthicum, Maryland, United States
OnsiteFull Time
7+ YOEActive TS/SCI with polygraph required; 7+ years backend development experience with Python, RESTful APIs, Django/Flask, Docker, MariaDB/MongoDB; experience with Git, Jira, Confluence; strong troubleshooting and communication skills.
Python, Django, Flask, MariaDB, MongoDB, JSON, XML, Docker, Git, Jira, Confluence, AWS
1mo
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Senior Software Engineer - API & MCP Platform
Bethesda or Waltham
$140k-$200k/yr HybridFull Time
5+ YOEBachelor's or equivalent experience, 5+ years software development, 3+ years building RESTful APIs/microservices, expertise in Java and NestJS, OAuth 2.0/OpenID/JWT, API design and security, MCP experience.
Java, NestJS, Spring Boot, Spring Security, Maven, Gradle, OAuth 2.0, OpenID Connect, JWT, OpenAPI, Swagger, Model Context Protocol (MCP), AWS, GCP, Azure, Docker, Kubernetes, Kafka, RabbitMQ
1mo
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Principal Software Engineer (Python, CI/CD, AWS, API)
Fort Meade, Maryland, United States
OnsiteFull Time
15+ YOE12+ MgmtTS/SCI with Polygraph; Master's in CS/CE; 15 yrs design/development; 12 yrs leading teams; ITILv3; Python/CI/CD/AWS/API experience.
Python, Jenkins, GitLab, CodePipeline, AWS, API
1mo
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Software Engineer - Java, Microservices, MuleSoft & API Development (Remote)
Baltimore, Maryland, United States
$80k-$158k/yr RemoteFull Time
5+ YOEBachelor's in IT/Computer Science (or 4 additional years experience), 5+ years software design/development, experience with Java, microservices, APIs, MuleSoft, Docker/Kubernetes, AWS/Azure, SQL/NoSQL, CI/CD, testing frameworks, and mentoring/leading teams.
Java, Spring, Spring Boot, Spring Cloud, Spring Core, Spring MVC, Spring Integration, Spring Batch, REST, SOAP, Docker, Kubernetes, Microsoft Azure, Microsoft Azure Monitor, Microsoft Azure Kubernetes Service (AKS), AWS, Oracle, Postgres, PostgreSQL, Mongodb, Cassandra, Elastic/ELK, Splunk, Kibana, Confluent, Apache Kafka, Kafka Streams, Postman, newman, MuleSoft, Dataweave, FHIR (Fast Healthcare Interoperability Resources), HL7, Cucumber, TestNG, Rest Assured, JSON, XML, Git, Bitbucket, Jira, Swagger/OpenAPI Specification, Service Mesh, OAuth, Apigee, Maven, Jenkins, SonarQube, Artifactory, UNIX, Shell
2mo
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Software Engineer 1 (API)
Linthicum Heights, Maryland, United States
$52-$107/hr OnsiteFull Time
7+ YOEU.S. citizenship and Top Secret/SCI clearance with appropriate polygraph required; 7 years SWE experience; Bachelor’s in Computer Science (or 4 additional years of SWE experience); strong Python, Django/Flask, ReST, and database skills.
Python, Django, Flask, MariaDB, MongoDB, PostgreSQL, ReST, JSON, XML, Swagger, AWS, Docker, Visual Studio Code, Jira, Confluence, Git
1w
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APPLICATION ENGINEER LEVEL 4 (API)
Fort Meade, Maryland, United States
OnsiteFull Time
4+ YOEActive TS/SCI with Polygraph required; strong Python, Docker, Django/Flask, REST/microservices, and MongoDB/MariaDB experience; 4+ years technical experience (varies by degree).
Python, Docker, Django, Flask, MariaDB, MongoDB, ReST, JSON, XML, Jira, Confluence, Git, AWS
2mo
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Salesforce Developer
Adelphi, Maryland, United States
OnsiteContract
2+ YOE2–4 years Salesforce development; Bachelor's in CS or INFO; Apex, Flows, LWC, APIs, Data Loader; Agile; strong problem-solving and communication.
Apex, Lightning Web Components, Salesforce Flows, APIs, Data Loader, Copado, Git
1d
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Developer, Applications
Westminster or Crawfordsville
$70k-$85k/yr OnsiteFull Time
2+ YOECollege degree or equivalent with 2+ years IT development/support experience; experience with ERP/WMS/TMS; strong Oracle PL/SQL, Linux, Python, JavaScript, and Git skills; barcode and API knowledge.
Oracle, PL/SQL, Linux, Python, HTML, JavaScript, Perl, C, TCP/IP, API, Git, VS Code
3mo
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Software Engineer - Python
Annapolis Junction, Maryland, United States
OnsiteFull Time
Develop Python/FastAPI middleware; build pipelines; implement REST API; ensure testing; participate in Agile sprints; documentation.
Python, FastAPI, REST API, Git, Agile, DevSecOps, Axway, Windows NAS, SQL, UAT
1mo
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Senior React Developer
Annapolis Junction or Columbia
$200k-$275k/yr HybridFull Time
12+ YOESenior full-stack developer proficient in React and Java/Spring Boot; experience migrating legacy systems; ability to work with Camunda and Pega workflows; strong REST APIs and Oracle/SQL skills.
React, Java, Spring Boot, Camunda, Pega, Oracle, SQL, REST API
10h
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Senior Software Engineer
Maryland, United States
RemoteFull Time
8+ YOEBachelor's in CS or related, 8+ years software development, experience with C#, .NET, Web API, SQL Server, JavaScript/AngularJS, Git, CI/CD, Agile/Scrum, production support, and mentoring.
C#, .NET, ASP.NET MVC, Web API, RESTful APIs, SQL Server, JavaScript, AngularJS, jQuery, Ajax, Bootstrap, CSS, JSON, Agile/Scrum, Git, DevOps, automated testing, CI/CD, Python, Microsoft Azure, NBS, NED, nVision, ServiceNow, DMS
1w
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Software Engineer
Annapolis Junction, Maryland, United States
$96-$108/hr OnsiteFull Time
14+ YOESenior full-stack developer with experience in Java, Spring Boot, Linux, APIs, SQL, Git, and container tooling; TS/SCI with polygraph required; HS/GED plus 18+ years or Bachelor's plus 14+ years of software engineering experience.
Java, JavaScript, Spring Boot, Linux, API, SQL, Git, Docker, Docker Compose, Maven, Apache Kafka, Apache NiFi, Jira, Confluence, ReactJS
2mo
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Software Engineer (GC-3)
Annapolis Junction, Maryland, United States
$220k-$250k/yr OnsiteFull Time
15+ YOE12+ Mgmt15+ years of design and development experience; Master's in Computer Science or Computer Engineering; ITIL Certification; Python, CI/CD; AWS and API integration; TS/SCI with Polygraph clearance.
Python, Jenkins, GitLab, CodePipeline, AWS, API, CI/CD
1w
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Senior Software Engineer
Fort Meade, Maryland, United States
$170k-$240k/yr OnsiteFull Time
12+ YOEActive Top Secret (TS/SCI) with polygraph, US citizenship, Bachelor's in a technical discipline (or 4 years experience), 12+ years software development, strong Python, LLM and API integration experience, Git and Atlassian familiarity.
Python, LLMs, APIs, Git, Jira, Confluence
3w
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Software Engineer I
Sparks or Sacramento or Dayton or Hagerstown
$45k-$52k/yr OnsiteFull Time
1+ YOEBachelor's in CS/IS or 3 years' equivalent experience; 1–2 years web/app development (JavaScript/CSS) preferred; experience or exposure to ColdFusion, React, MySQL; familiarity with APIs, Git, and Jira; strong communication and problem-solving.
ColdFusion, React, HTML5, CSS3, JavaScript (ES6), Bootstrap, jQuery, MySQL, APIs, webhooks, XML, JSON, CSV, Git, Jira, AWS, Azure, Warehouse Management System (WMS), Electronic Data Interchange (EDI)
1w
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Custom Software Engineer Python - 6365276
Morristown or Charlotte or Dallas or Cleveland or California or Colorado or Illinois or Maine or Maryland or Massachusetts or Minnesota or New York or New Jersey or Virginia or Washington or District of Columbia
$37-$47/hr HybridFull Time
5+ YOE5+ years Python experience, Django/Flask and REST API development, SQL, Alteryx, JIRA/Octane, Agile experience, bachelor's degree, and familiarity with banking and financial datasets.
Python, Alteryx, JIRA, OpenText ALM Octane, SQL, Django, Flask, REST API, Playwright, Jenkins, Git
1w
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Angular/NodeJS Developer - II
Bethesda or California or Colorado or Illinois or Minnesota or New Jersey or New York or Oregon or Washington
$85k-$117k/yr RemoteFull Time
8+ YOE8+ years software development with strong back-end focus (Java and/or NodeJS), hands-on Angular and API development, cloud (AWS/Azure), Git/GitHub, unit/integration testing, US citizenship and Public Trust eligibility.
Angular, NodeJS, Java, C#/.Net, TypeScript, JavaScript, RESTful APIs, EDI, X.12, XML, JSON, AWS, Azure, API Gateway, Lambda, S3, CloudWatch, Docker, ECS, EKS, Git, GitHub, JUnit, Jest, JIRA, Microsoft Teams
5d
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Sr. Software Engineer/Technical Lead
Bethesda, Maryland, United States
OnsiteFull Time
Design and implement web, application, and database architecture; develop RESTful APIs and web applications; support accessibility, security, cloud migration, CI/CD, and enterprise integrations for government systems.
Visual Studio, MVC, .NET, C#, SQL Server Data Tools, Python, Web API, Bootstrap, Angular Js, Ajax, JavaScript, CSS, JQuery, JSON, ServiceNow, nVision, NBS
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