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1,277 api engineer jobs at 467 companies in Virginia

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API Systems Engineer
Vienna, Virginia, United States
$96k-$123k/yr HybridFull Time
Navy Federal Credit Union
Navy Federal Credit Union: Member-owned, not-for-profit credit union providing banking, lending, and investment services to servicemembers, veterans, DoD personnel, and families.
Expert Java, JEE, web services, APIs, Spring Boot, cloud architecture, API security, and Agile expertise; strong troubleshooting and communication skills; bachelor's degree or equivalent experience.
Java, JEE, Web Services, APIs, SOAP Services, RESTful APIs, JSON, Spring Boot, Istio, Service Mesh, Spring Framework, Open API Specification, RAML, MCP, A2A, LLMs, Azure, AWS, GCP, Pivotal, Tanzu, Tanzu Kubernetes Grid, k8s, OAuth, SAML, JWT, OpenID Connect, Agile, SAFE, Salesforce, Oracle HCM, PeopleSoft, CRM, Dynamics, Azure DevOps
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3mo
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Senior API Systems Engineer
Sterling, Virginia, United States
$150k-$254k/yr OnsiteFull Time
BAE Systems
BAE SystemsLSE: BA.: Global defense, aerospace, and security technology.
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
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1mo
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API Gateway Engineer (Kong)
Herndon, Virginia, United States
$170k-$210k/yr RemoteFull Time
BDR Solutions
BDR Solutions: Service-disabled veteran-owned small IT services firm modernizing health, social-service, and disaster-relief systems for U.S. federal agencies.
Deep Kong (Enterprise/Konnect) experience, API migration and CI/CD integration skills, federal delivery and documentation experience, active IRS Minimum Background Investigation and U.S. citizenship required.
Kong Enterprise, Kong Konnect, GitOps, CI/CD, DevSecOps
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Backend API Developer
Arlington, Virginia, United States
$119k-$161k/yr OnsiteFull Time
General Dynamics Information Technology
General Dynamics Information TechnologyNew York Stock Exchange: GD: Provider of enterprise IT services and defense solutions.
8+ YOERequires a bachelor's degree in computer science or engineering or equivalent, 8+ years of relevant experience, U.S. citizenship, and Public Trust eligibility. Experience with scalable services, streaming, authorization, containers, cloud, and production operations.
REST, Kafka, Amazon Managed Streaming for Apache Kafka (MSK), Event Hubs, API gateways, service meshes, AWS Lambda, Azure Functions, WebSocket, server-sent events
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3mo
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API/Java/Python Developer, SME TS Clearance REQUIRED
Arlington, Virginia, United States
$88k-$191k/yr OnsiteFull Time
CGI Federal
CGI Federal: U.S. technology and professional services serving federal agencies with IT consulting and mission solutions.
10+ YOETS/SCI eligible with CI Poly; proficiency in Java and Python and related frameworks; API design and integration experience; database, cloud, containerization, Git, Agile experience; Bachelor's or 10+ years experience.
Java, Python, Spring Boot, Flask, Django, REST, GraphQL, SOAP, Postman, Swagger UI, PostgreSQL, MongoDB, MySQL, Git, AWS, Azure, GCP, Docker, Kubernetes
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GIS Data API Integration Engineer
Tysons or Virginia
RemoteFull Time
Integral Federal
Integral Federal: Private federal contractor delivering digital transformation, systems engineering, and national-security solutions to defense, intelligence, and civilian agencies.
7+ YOEBachelor's degree in computer science or IT-related field and 7–10 years of experience with GIS data accuracy, spatial ETL, enterprise integration, spatial databases, geospatial standards, and GIS APIs.
ESRI, ArcGIS, REST, spatial databases, ETL
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4w
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Senior Process Engineer - API manufacturing
Petersburg, Virginia, United States
OnsiteFull Time
Novo Nordisk
Novo NordiskNasdaq Copenhagen / NYSE: NOVO B / NVO: Global healthcare dedicated to defeating serious chronic diseases.
8+ YOEBachelor's in Engineering or Chemistry, 8+ years engineering experience in process design and operations support, knowledge of process utility systems, commissioning/validation, and regulatory engineering standards.
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4mo
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Tool/API Integrator
Springfield, Virginia, United States
$150k-$155k/yr OnsiteFull Time
Suvi Global Services
Suvi Global Services: Alaska Native-owned government contractor providing IT, cybersecurity, logistics, facility operations, and intelligence support.
7+ YOEUS citizen able to obtain Public Trust, bachelor\u0002s degree in CS/IT/Software Engineering, 7+ years tool integration and API development experience, ServiceNow and CSDM proficiency, ETL and XML/REST skills.
ServiceNow, Common Service Data Model (CSDM), Ins-Pi (YouDesign), REST, XML, MuleSoft, Apigee, ETL
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2mo
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SME Systems Engineer- API Gateway & Cloud Architecture
Sterling, Virginia, United States
$180k-$230k/yr OnsiteFull Time
NetServices
NetServices: Private technology services firm providing cybersecurity, software engineering, and IT solutions to U.S. defense and intelligence agencies.
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
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Principal Systems Engineer (API Gateway) - TS/SCI w CI Poly
Sterling, Virginia, United States
OnsiteFull Time
Modern Government Solutions
Modern Government Solutions: Woman-owned federal contractor providing training, logistics, program development, and technical services to defense and intelligence agencies.
16+ YOEBachelor's degree and 16+ years of enterprise systems, cloud architecture, and API experience; 5+ years administering API gateways; active DoD TS/SCI with CI Polygraph and Security+ CE required.
API Gateway, Windows, COTS, AWS, Microsoft Azure, Java, Python, C#, Broadcom API Gateway, MuleSoft, Apigee, Istio, Linkerd, Google Cloud Platform (GCP), Oracle Cloud Infrastructure (OCI), IBM Cloud, ServiceNow, REST, GraphQL, ETL
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Coordinator, Customer Facing API Support
Richmond or Henrico
HybridFull Time
TForce Freight
TForce Freight: Less-than-truckload freight carrier serving North America.
Bachelor’s degree required; IT, Computer Science, Engineering, or related field preferred. API, technical, systems integration, or application support experience preferred, with troubleshooting and analytical skills.
RESTful APIs, web services, JSON, XML, support ticketing systems, API monitoring tools, logging systems, integration platforms
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SME Systems Engineer - API (TS/SCI w/ CI Poly required)
Sterling, Virginia, United States
OnsiteFull Time
A&M Technologies
A&M Technologies: Minority-owned IT services providing federal systems integration, cybersecurity, cloud, software, and management support to government clients.
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
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1mo
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Lead Software Engineer, Back End (Python, GO, API, AWS) (Cloud Operations Resilience Engineering)
McLean, Virginia, United States
$197k-$225k/yr OnsiteFull Time
Capital One
Capital OneNYSE: COF: A technology-driven bank providing diverse financial services.
4+ YOEBachelor's degree and 4+ years software engineering experience; cloud (AWS/Azure/GCP), Python or Go, API and distributed microservices experience; strong communication and mentoring skills.
Python, Go, API, AWS, Microsoft Azure, Google Cloud, Open Source RDBMS, NoSQL
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2mo
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Forward Deployed Engineer
Alabama or Oklahoma or Mississippi or Philippines or Nigeria or Kentucky or Kansas or Louisiana or Tennessee or Jamaica or Utah or Georgia or Texas or Virginia or Idaho or Iowa or Costa Rica or Indiana
RemoteFull Time
ModSquad
ModSquad: Products-and-services for customer support, trust & safety, security, and enterprise technology.
5+ YOE5+ years in technical implementation/solutions engineering or consulting; proven experience building and deploying production agentic AI systems; strong API/integration skills, prompt engineering and observability; excellent communication.
API
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Multi-Cloud Engineer
Chantilly, Virginia, United States
$15k-$250k/yr OnsiteFull Time
GRVTY
GRVTY: Defense technology firm delivering automated intelligence and mission support.
Requires TS/SCI with polygraph clearance, cloud network security experience, AWS, API configuration, Python, Linux, C++, Windows shell, Perl, system administration, and cloud engineering experience.
AWS, Python, Linux, C++, Windows shell, Android, Perl, Linux RHEL, medialive, Dynamo, API
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3mo
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Growth Engineer, GTM
McLean, Virginia, United States
OnsiteFull Time
Range
Range: AI-powered wealth management platform providing financial planning and advisory services to high-income U.S. households.
5+ YOE5–9 years in growth engineering or CRO-focused web development; strong JavaScript and SQL; experience with React; CRO experience and A/B testing; API/webhook integrations in a GTM stack; familiarity with GA4, Segment or RudderStack, server-side GTM.
JavaScript, SQL, React, GA4, Segment, RudderStack, GTM, APIs, Webhooks
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3mo
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AI Engineer
Arlington, Virginia, United States
$78k-$176k/yr HybridFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Global firm providing management, technology, and engineering consulting services.
2+ YOE2+ years ML engineering experience; AI/LLM experience; prompt engineering; Python; cloud platforms; REST APIs; secret clearance eligibility; bachelor’s degree.
Python, AWS, Azure, GCP, LangChain, LlamaIndex, OpenAI, Anthropic, Weaviate, OpenSearch, Docker, CI/CD, REST APIs, LLMs, Embeddings
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2w
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Systems Engineer - Cleared Programs
Virginia or Maryland or Washington
$230k/yr FieldFull Time
Chainalysis Government Solutions
Chainalysis Government Solutions: Private U.S. subsidiary providing blockchain intelligence, technology, training, and services to defense, intelligence, law-enforcement, and civilian agencies.
5+ YOEActive TS/SCI clearance with Full Scope Polygraph, U.S. citizenship, and 5+ years of systems or solutions engineering experience in classified environments. Requires AWS, Linux, Windows, PostgreSQL, Python, Bash, APIs, and security hardening expertise.
Amazon Web Services (AWS), Amazon EC2, Amazon VPC, Elastic Load Balancing (ELB), Amazon RDS, Amazon S3, Amazon EBS, Linux, Windows, PostgreSQL, Python, Bash, Unix, FedRAMP, RMF, STIG, API
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Sr. Software Engineer II, Platform/API
Chicago or California or Colorado or Florida or Georgia or Illinois or Indiana or Minnesota or Missouri or Montana or New Jersey or New York or North Carolina or Ohio or Oregon or Pennsylvania or South Carolina or Texas or Utah or Vermont or Virginia or Washington or Wisconsin or country_code
$140k-$190k/yr HybridFull Time
NinjaTrader
NinjaTrader: Privately held futures trading platform and brokerage serving retail and professional futures traders.
6+ YOE6+ years building and operating backend services; Node.js, TypeScript, SQL, Docker, Kubernetes, cloud, event-driven architecture, and workflow reliability expertise. Bachelor's or master's degree or equivalent experience.
Node.js, TypeScript, Kafka, Google Cloud Pub/Sub, SQL, Docker, Kubernetes, Google Cloud Platform, Codex, Cursor, Claude Code, Statsig
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3mo
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AI&R Engineer - USA
Hopewell, Virginia, United States
OnsiteFull Time
Ashland
AshlandNYSE: ASH: Public global additives and specialty ingredients serving consumer and industrial customers in more than 100 countries.
5+ YOEBachelor’s in Mechanical, Materials, or Chemical Engineering; 5-8 years in chemical manufacturing; API 510/570/653 preferred; ethical conduct.
API Standards, NDE, RBI, FFS, AIM, Maintenance Planning, Capital / Repair
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