71 sr api developer jobs at 34 companies in Delaware
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Sr. Manager, Software Engineering - API
Florida or Texas or Illinois or New York or New Jersey or Alabama or Arizona or Arkansas or Colorado or Connecticut or Delaware or Georgia or Indiana or Kansas or Massachusetts or Missouri or North Carolina or Tennessee or Utah or Wisconsin
$174k-$189k/yr RemoteFull Time
7+ YOE7+ MgmtLead API platform strategy, manage teams, design API governance, and drive cloud-native infrastructure—REST/GraphQL/gRPC with AWS/Kubernetes.
REST, GraphQL, gRPC, MCP, Kong, Apigee, AWS API Gateway, AWS, Kubernetes, OpenAPI/Swagger, Protocol Buffers, OAuth 2.0, JWT, mTLS, Istio, Linkerd, Terraform, CI/CD
1w
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Sr. Angular Developer
Newark, Delaware, United States
$100k-$120k/yr OnsiteFull Time
10+ YOEExperience with Angular 12+, TypeScript, HTML/CSS/SCSS, REST APIs, SQL and relational DBs; Git and CI/CD; Agile; Bachelor's in Computer Science; 10+ years of experience.
Angular, TypeScript, HTML, CSS, SCSS, REST APIs, SQL, Oracle, PostgreSQL, SQL Server, Git, CI/CD
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Sr Aderant Engineer
Reston or San Diego or San Francisco or Washington or Wilmington or Phoenix or Los Angeles or Houston or Boston or Austin or Atlanta or Raleigh or Baltimore or New York or Dallas or Palo Alto or Short Hills or Minneapolis or Chicago or Seattle or Philadelphia or Miami
$113k-$179k/yr HybridFull Time
5+ YOE5+ years supporting Aderant Expert and enterprise financial/practice management systems, strong backend development and SQL skills, experience with integrations/APIs, bachelor's in CS/IT, analytical and troubleshooting ability.
Aderant Expert, SQL, APIs
2w
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Sr Software Engineer
Pennsylvania or New Jersey or Delaware
RemoteFull Time
7+ YOE7+ years software engineering experience, hands-on Java/Spring Boot, React/TypeScript, cloud-native on Microsoft Azure, OAuth2/identity platforms, API and data-store experience; BS in CS or equivalent preferred.
Java, Spring Boot, React, TypeScript, HTML, CSS, OAuth2, ForgeRock, Ping Identity, Microsoft Azure, Kubernetes, Microsoft Azure API Management, NGINX, SQL, NoSQL, CI/CD, Git, GitHub, Stash, Adobe Experience Manager (AEM)
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Sr. Engineer, Software - Archimedes
St. Louis or Brentwood or Alaska or Arizona or Arkansas or California or Connecticut or Delaware or Hawaii or Idaho or Louisiana or Maine or Massachusetts or Michigan or Mississippi or Montana or Nebraska or Nevada or New Mexico or New York or North Carolina or North Dakota or Oregon or Rhode Island or South Carolina or South Dakota or Texas or Utah or Vermont or Washington or West Virginia or Wyoming or United States
HybridFull Time
8+ YOEBachelor's in CS or related; 8+ years software engineering experience (5+ years with C#, .NET, React); experience with cloud-native, APIs, microservices, CI/CD, Git, Azure; technical leadership and mentoring experience.
C#, .NET, ASP.NET Core, React, TypeScript, JavaScript, REST APIs, GraphQL, Webhooks, API Management, Microsoft Azure App Services, Microsoft Azure Functions, Microsoft Azure Container Apps, Microsoft Azure Kubernetes Service (AKS), Microsoft Azure Storage, Microsoft Azure Databricks, Microsoft Azure Data Lake Storage Gen2, Microsoft Azure Synapse Analytics, Microsoft SQL Server, PostgreSQL, Microsoft Azure DevOps, GitHub Actions, CI/CD, Infrastructure as Code, Retrieval-Augmented Generation (RAG), Microsoft Azure OpenAI, Microsoft Azure AI Services, Intelligent Automation, Agent-Based Solutions, OWASP, OAuth2, OpenID Connect, DevSecOps, Git, Azure Repos, GitHub, TFS, Jira, Unix/Linux shell scripting
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Sr. Software Engineer (SDK & Integrations)
Arizona or California or Colorado or Delaware or Maryland or Massachusetts or Missouri or New Jersey or Nevada or New York or North Carolina or Oregon or Oklahoma or Pennsylvania or South Carolina or Texas or Utah or Virginia or Washington
$150k-$180k/yr RemoteFull Time
Identity Digital: A leading registry of generic top-level domain name extensions.
5+ YOE5+ years commercial software engineering; fluency in TypeScript and Python and working proficiency in Go; strong DNS, HTTP/TLS, crypto, API design, CI/CD, and open-source publishing experience; bachelor's degree or equivalent.
TypeScript, Python, Go, LangChain, LangGraph, LlamaIndex, CrewAI, Microsoft Agent Framework, OpenAI Agents SDK, Cloudflare Workers, Fastly Compute, Vercel Edge, npm, PyPI, Go module proxy, WebAssembly (WASM), SPIFFE/SPIRE, WebID, GitHub, JWTs, JWK Sets, ES256, Ed25519
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Sr Engineer, Business Systems
California or Colorado or Florida or Georgia or Illinois or Maryland or Minnesota or North Carolina or New York or Ohio or Oklahoma or Pennsylvania or Tennessee or Texas or Virginia or Washington or West Virginia or Arizona or Delaware or Kentucky or Michigan or New Hampshire or Nevada
$88k-$110k/yr RemoteFull Time
5+ YOE5+ years supporting enterprise business systems with strong Salesforce Sales Cloud/Service Cloud experience, Apex and automation, API integrations, troubleshooting, and focus on usability and documentation.
Salesforce Sales Cloud, Salesforce Service Cloud, Apex, APIs
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Blockchain - Sr Lead Security Engineer
Plano or Seattle or Wilmington or Columbus or Jersey City or Palo Alto
$171k-$260k/yr OnsiteFull Time
7+ YOEBachelor's in CS or related,7+ years software development with ≥2 years blockchain experience, strong Java/Python skills, blockchain fundamentals, cryptography (MPC,TSS,DKG,ECDSA,EdDSA), AWS, containers, infra-as-code, API and security best practices.
Java/J2EE, Python, Spring Boot, Flask, FastAPIS, Multi-Party Computation (MPC), ECDSA, EdDSA, BIP-32/BIP-44, AWS EC2, AWS EKS, AWS Lambda, AWS S3, AWS RDS, AWS IAM, AWS SQS, AWS SNS, API Gateway, AWS KMS, Terraform, CloudFormation, Docker, Kubernetes, Oracle, PostgreSQL, DynamoDB, MongoDB, Redis, Datadog, Dynatrace, Splunk, Grafana, Prometheus, Jenkins, GitHub Actions, Spinnaker, GitHub Copilot, Claude Code, OAuth 2.0, JWT, TLS, mTLS
3w
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Senior Mobile Developer
Utah or Wisconsin or Alaska or Arkansas or Washington or Arizona or Virginia or Alabama or Texas or Pennsylvania or Oregon or Oklahoma or Ohio or Nevada or Nebraska or Montana or Mississippi or Minnesota or Michigan or Massachusetts or Maryland or Maine or Louisiana or Kansas or Iowa or Indiana or Idaho or Florida or Delaware or Connecticut or Missouri or Colorado or California or Wyoming
$125k-$135k/yr RemoteFull Time
8+ YOEExpertise in Kotlin and Swift, modern mobile UI frameworks, mobile architectures and DI, REST API integration, mobile testing, CI/CD tooling, AI-assisted development experience, bachelor's or equivalent, 8+ years software development.
Kotlin, Swift, Jetpack Compose, SwiftUI, The Composable Architecture, MVVM, Koin, Retrofit, OkHttp, URLSession, JUnit, Mockito, Robolectric, Espresso, Compose UI test, XCTest, XCUITest, Gradle, Swift Package Manager, Bitrise, Fastlane, GitHub Copilot, Claude, Cursor, ChatGPT
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Senior Java Developer - Vice President
New Castle, Delaware, United States
HybridFull Time
6+ YOEProficiency in Java, API, Cloud engineering; RESTful APIs with Spring; Oracle/SQL/NoSQL; OpenShift/Kubernetes; CI/CD; SDLC/Agile; DevOps; able to work in fast-paced environment.
Java, API, Spring, Oracle, SQL, MongoDB, OpenShift, Kubernetes, MQ, Kafka, CI/CD, SDLC, Agile
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Senior Python Developer
Washington or Alabama or Colorado or Delaware or Florida or Georgia or Illinois or Indiana or Kansas or Louisiana or Maryland or Minnesota or Mississippi or North Carolina or New Jersey or Ohio or Pennsylvania or South Carolina or Tennessee or Texas or Virginia
$90k-$130k/yr RemoteFull Time
5+ YOEBachelor’s degree in a technical field, 5+ years of Python development, Django and Flask, RESTful APIs, Git, PostgreSQL, Unix/Linux, automated testing, HTML, JavaScript, cloud platforms, and Jupyter Notebooks.
Python, AWS, ServiceNow, UiPath, Django, Flask, Jupyter Notebook, Git, PostgreSQL, Unix, Linux, HTML, JavaScript, Docker, Kubernetes, WCAG, Section 508
1w
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Principal Software Development Engineer
Wellesley or Hartford or New York City or Arkansas or Vermont or Connecticut or Georgia or Texas or Minnesota or Michigan or Maine or Wisconsin or New York or District of Columbia or Kansas or Indiana or New Jersey or Nebraska or Rhode Island or Louisiana or Tennessee or Kentucky or Mississippi or Ohio or Oklahoma or West Virginia or Massachusetts or Maryland or South Carolina or Alabama or Missouri or Virginia or Illinois or North Carolina or Florida or New Hampshire or Delaware
$144k-$288k/yr HybridFull Time
10+ YOE10+ years software experience, 7+ years leading enterprise solution design, cloud-native microservices on GCP, Java/Python/Node.js, API design, strong communication and stakeholder skills.
Java, Python, Node.js, Angular, ReactJS, Google Cloud Platform (GCP), REST, APIs, CI/CD, SAFe
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Senior Java Developer - Vice President
New Castle or Irving
$126k-$189k/yr HybridFull Time
6+ YOEProficiency in Java, RESTful APIs (Spring), Oracle/SQL/MongoDB, OpenShift/Kubernetes, MQ/Kafka, cloud engineering, DevOps/CI/CD, SDLC/Agile; strong systems analysis; 6+ years preferred; Bachelor’s required, Master’s preferred.
Java, API, Spring, Oracle, SQL, NoSql, MongoDB, OpenShift, Kubernetes, MQ, Kafka, SDLC, Agile, DevOps, CI/CD, GenAI, LLMs
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Software Engineer II
Wilmington, Delaware, United States
OnsiteContract
5+ YOE5+ years software development with Angular and .NET, C#, Azure, DevOps and CI/CD experience; strong SOLID and testing practices; ability to lead modernization and mentor junior developers.
Angular, .NET Framework, .NET Core, C#, Web APIs, Entity Framework Core, Microsoft SQL Server, Azure, DevOps, CI/CD, GitLab, ASP.NET Web Forms, PrimeNG, Kendo UI
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Software Engineer, AI
United States or Alabama or Alaska or Arkansas or Arizona or California or Colorado or Connecticut or Delaware or Florida or Georgia or Hawaii or Iowa or Idaho or Illinois or Indiana or Kansas or Kentucky or Louisiana or Maine or Michigan or Minnesota or Missouri or Mississippi or Montana or North Carolina or North Dakota or Nebraska or New Hampshire or New Jersey or New Mexico or Nevada or Ohio or Oklahoma or Pennsylvania or Rhode Island or South Carolina or South Dakota or Tennessee or Texas or Utah or Virginia or Washington or Wisconsin or West Virginia or Wyoming
$125k-$145k/yr RemoteFull Time
5+ YOEBachelor's (or equivalent) and 5+ years professional software development with C#/.NET; experience with AI agent frameworks, LLMs, Transformers/OpenAI/Hugging Face, REST APIs, cloud (Azure/AWS/GCP), MongoDB, and Git.
C#, .NET, LangChain, CrewAI, AutoGPT, MetaGPT, GPT, Claude, Mistral, Transformers, OpenAI API, Hugging Face, REST APIs, Azure, AWS, GCP, MongoDB, Git, Docker, CI/CD, Azure AI Foundry, Microsoft ConfigMgr, Microsoft Intune, Microsoft WSUS
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Senior Software Engineer
Connecticut or West Virginia or South Carolina or Pennsylvania or New Hampshire or Hawaii or California or Michigan or Kentucky or Arizona or New Mexico or Nevada or Florida or Alaska or Washington or Oregon or Texas or Alabama or Mississippi or Tennessee or Illinois or Wisconsin or Louisiana or Arkansas or Missouri or Iowa or Minnesota or Oklahoma or Kansas or Nebraska or South Dakota or North Dakota or Colorado or Wyoming or Idaho or Montana or Utah or Vermont or North Carolina or Massachusetts or Georgia or Rhode Island or New York or Maryland or Delaware or Virginia or Ohio or New Jersey or Maine
$110k-$140k/yr RemoteFull Time
Worksoft: Automation platform for enterprise business process testing and discovery.
10+ YOE10+ years web development experience (C#, .NET, ASP.NET Core) and production AI/ML experience (LLMs, PyTorch/TensorFlow, LangChain, etc.); Bachelor’s in CS/Engineering or 15+ years experience; strong problem solving and customer-facing troubleshooting skills.
OpenAI, Azure OpenAI, Anthropic Claude, Gemini, PyTorch, TensorFlow, scikit-learn, ML.Net, LangChain, Semantic Kernel, RAG, vector databases, LLMs, ASP.Net Core, Web APIs, REST, JWT, OAuth, Azure AD/Entra ID, Blazor, Angular, MS Sql Server, EF Core, WinForms, WPF, .Net MAUI, Service Bus, Kafka, MSBuild, Git
1mo
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Senior Drupal Developer, (Senior Consultant, Engineering & Technical Services)
Baltimore or Alabama or California or Delaware or District of Columbia or Florida or Georgia or Maryland or New Jersey or New York or North Carolina or Pennsylvania or South Carolina or Tennessee or Texas or Virginia or West Virginia
$121k-$140k/yr RemoteFull Time
7+ YOE7+ years developing Drupal (9/10/11), strong PHP/Twig/JavaScript skills, REST API integration, cloud and CI/CD experience, accessibility and security best practices, ability to obtain Public Trust clearance, Bachelor's degree or equivalent.
Drupal, PHP, Twig, JavaScript, Composer, RESTful APIs, CI/CD, AWS, cloud.gov, AWS GovCloud, Acquia
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Sr Financial Systems Engineer - Workday Financials ERP
Illinois or Kentucky or Kansas or Idaho or Delaware or Colorado or Nevada or Nebraska or Montana or Michigan or Maryland or Maine or Iowa or Florida or California or Arkansas or Utah or Ohio or New Jersey or Minnesota or Massachusetts or Indiana or Georgia or Arizona or Alabama or Wisconsin or Washington or Virginia or West Virginia or Oklahoma or Texas or Tennessee or Pennsylvania or North Carolina or New Mexico or New York or Missouri or Louisiana or Connecticut or Washington, D.C. or South Carolina or Oregon or New Hampshire
$93k-$139k/yr HybridFull Time
5+ YOEBachelor's in CS/IS or equivalent, 5+ years hands-on Workday Studio and integrations (RaaS, EIB, BIRT, XSLT), strong APIs/SOAP/REST knowledge, middleware (Workato, Boomi, Fivetran), SOX/compliance experience, strong communication.
Workday Studio, RaaS, BIRT, EIB, XSLT, SOAP, REST, Workato, Boomi, Fivetran, Workday Financials
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Senior Software Engineer – Control Plane (Go/Kubernetes) - Hypershield
San Jose or Research Triangle Park or North Dakota or Montana or Maine or Ohio or Nebraska or Louisiana or Texas or Nevada or Hawaii or Georgia or Mississippi or Connecticut or Colorado or Wyoming or Wisconsin or West Virginia or Maryland or California or Vermont or New York or New Jersey or Arkansas or South Dakota or Pennsylvania or Michigan or Indiana or Idaho or Arizona or New Mexico or New Hampshire or Kentucky or Alabama or South Carolina or Illinois or Missouri or Massachusetts or Iowa or Tennessee or North Carolina or Minnesota or Kansas or Alaska or Rhode Island or Delaware or Washington or Virginia or Utah or Oregon or Florida or Oklahoma
$184k-$264k/yr RemoteFull Time
5+ YOE5+ years software development experience building cloud-native, Linux/Kubernetes-based infrastructure using Go/C/C++; experience with networking, security, APIs, and distributed systems; bachelor’s or advanced degree required.
Go, C, C++, Linux, Kubernetes, REST, gRPC, Protocol Buffers, YANG, NETCONF
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Staff Engineer - Full Time - Remote
Illinois or Idaho or Wyoming or West Virginia or Wisconsin or Washington or Virginia or Utah or Texas or Tennessee or South Dakota or South Carolina or Pennsylvania or Oregon or Oklahoma or Ohio or New York or Nevada or New Mexico or New Jersey or New Hampshire or Nebraska or North Carolina or Mississippi or Missouri or Minnesota or Michigan or Maine or Maryland or Massachusetts or Louisiana or Kentucky or Kansas or Indiana or Iowa or Georgia or Florida or Delaware or District of Columbia or Colorado or California or Arizona or Arkansas or Alabama or Atlanta
$121k-$162k/yr RemoteFull Time
10+ YOE10+ years software engineering experience; Bachelor\u0002s in CS or equivalent; leadership across teams; strong distributed systems, APIs, cloud, and modern architecture experience; Agile background; mentoring and strong communication skills.
AWS, Azure, Kubernetes, CI/CD, observability platforms, Infrastructure as Code
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