35 api developer jobs at 20 companies in Effort, PA
1mo
Save
Mark Applied
Hide
Senior Developer / Lead Developer
Allentown or Providence or Louisville
HybridFull Time
5+ YOEBachelor's degree, 5+ years software development experience (senior) or 7+ (lead); proficiency in C#, Java, TypeScript, frontend frameworks, APIs and SQL; experience with cloud, microservices, and emerging tech.
C#, Java, TypeScript, JavaScript, Python, Angular, React, SQL, Microservices, Cloud Architecture, APIs, SAP ABAP, SAP S/4HANA, Kubernetes, Azure Kubernetes Service (AKS), DevOps, RPA, Artificial Intelligence
1w
Save
Mark Applied
Hide
Senior QA Automation Engineer – API Automation & Performance Testing
Bridgewater, New Jersey, United States
$53k-$93k/yr HybridFull Time
Design and execute API, functional, integration, regression, and performance tests; build API automation frameworks; strong Java and JSON skills; experience with Postman, REST Assured, JMeter/K6, and Azure DevOps.
Postman, REST Assured, JSON, Azure DevOps, JMeter, K6, Java, Ready API, SOAP UI, Playwright, Selenium, Grafana, Dynatrace
1mo
Save
Mark Applied
Hide
Lead Developer
Allentown or Louisville or Providence
HybridFull Time
7+ YOEBachelor's degree (or equivalent), 7+ years experience (Lead) or 5+ years (Senior); strong software development background with C#, Java, JavaScript/TypeScript, front-end frameworks (Angular/React), APIs/JSON, and SQL; experience with microservices, cloud, containerization and Kubernetes preferred.
C#, Java, Python, JavaScript, TypeScript, Angular, React, SQL, JSON, APIs, Microservices, DevOps, Multi-Cloud, IoT, Intelligent Automation, RPA, Test automation, Machine Learning, Artificial Intelligence, Kubernetes, Azure Kubernetes Service (AKS), SAP ABAP
6d
Save
Mark Applied
Hide
Software Developer I
Bridgewater, New Jersey, United States
$72k-$104k/yr OnsiteFull Time
Bachelor's in CS or related (or equivalent experience), early-career software development experience, working knowledge of C# and Microsoft .NET, familiarity with PostgreSQL, Docker, Git, REST APIs, unit testing, and strong problem-solving and communication skills.
C#, Microsoft .NET, PostgreSQL, Docker, Git, REST APIs, Jira, Confluence, OPC UA, Linux
5d
Save
Mark Applied
Hide
Lead AI Engineer
Holmdel or Bethlehem or New York City
$119k-$195k/yr HybridFull Time
Advanced knowledge of machine learning engineering, distributed systems, cloud infrastructure, AI platforms, LLMs, RAG pipelines, orchestration, agentic frameworks, secure APIs, and enterprise governance.
Large Language Models (LLMs), retrieval-augmented generation (RAG), model orchestration frameworks, Agentic frameworks, API, cloud infrastructure, AI platforms
2mo
Save
Mark Applied
Hide
iOS Developer with Android IRC296867
Basking Ridge, New Jersey, United States
$120k-$130k/yr OnsiteFull Time
10+ YOE10+ years mobile development experience; strong iOS skills (Swift, SwiftUI, UIKit); Android secondary (Kotlin/Java); experience with RESTful APIs, GraphQL, CI/CD, app store releases; BS/MS in related field.
Swift, SwiftUI, UIKit, Objective C, Kotlin, Java, Android Studio, Jetpack, C/C++, RESTful APIs, GraphQL, Play Store, App Store, CI/CD
4d
Save
Mark Applied
Hide
Senior .NET Engineer (Azure/ Kubernetes)
Cary or Whippany or New York City or Greenville or Bridgewater
$110k-$138k/yr HybridFull Time
5+ YOERequires 5+ years in enterprise software development and Azure or comparable cloud infrastructure, with .NET, C#, REST APIs, Docker, AKS, Istio, distributed systems, and troubleshooting expertise.
.NET, C#, REST APIs, Azure, Azure Kubernetes Service (AKS), Azure Service Bus, Azure Monitor, Application Insights, Docker, Istio, Terraform, Bicep, ARM templates, Azure API Management (APIM), Azure Key Vault, Prometheus, Grafana, OpenTelemetry, Claude AI, Copilot Studio, MCP servers
1mo
Save
Mark Applied
Hide
Software Engineer, Senior
Center Valley, Pennsylvania, United States
$117k/yr HybridFull Time
4+ YOEBachelor's in computer science/related and 4 years software development experience; proficiency with .NET (VB.Net, C#, .NET Core, ASP.NET), RESTful APIs, SQL Server, cloud (Azure or AWS), unit/integration testing, CI/CD and Git; strong communication and analysis skills.
.NET, VB.Net, C#, .NET Core, ASP.NET, RESTful APIs, SQL Server, Azure, AWS, Unit testing, Integration testing, CI/CD, Git
1w
Save
Mark Applied
Hide
E-Commerce Back-End Developer
Easton, Pennsylvania, United States
OnsiteFull Time
3+ YOE3+ years back-end e-commerce development with PHP and Magento 2/Adobe Commerce, strong MySQL, API and integration experience, Composer/Docker/Git familiarity, and production troubleshooting skills.
Magento 2/Adobe Commerce, PHP, MySQL, GraphQL, REST APIs, Composer, Docker, Git, JavaScript, XML, NetSuite, Celigo, Redis, Varnish, OpenSearch/Elasticsearch, AWS, GCP, React, Next.js, PWA Studio, Hyva
1mo
Save
Mark Applied
Hide
Sr. Web Developer
Easton, Pennsylvania, United States
OnsiteFull Time
8+ YOEBachelor's in CS/IS, 8+ years web application development experience with ASP.NET/.NET Core, Web API, front-end JavaScript frameworks, SQL Server, Azure DevOps; Sitefinity CMS or CMS experience; leadership and communication skills.
Sitefinity CMS, ASP.NET, .NET Core, Web API, AngularJS, Bootstrap, SQL Server, Azure DevOps, GitLab, Azure Foundry AI, NIST CSF
2mo
Save
Mark Applied
Hide
MES Software Engineer/Data Analyst
Breinigsville, Pennsylvania, United States
$110k-$176k/yr OnsiteFull Time
6+ YOEBS+8 yrs or MS+6 yrs in relevant field; experience developing and supporting MES platforms; programming in SQL, Python, C#, JavaScript, .NET; knowledge of REST APIs, OPC UA, MQTT, PLC/SCADA integrations; AI/ML and manufacturing analytics experience.
Siemens Opcenter, Rockwell FactoryTalk, Ignition, AVEVA/Wonderware, SAP ME/MII, Tulip, Critical Manufacturing, Apriso, SQL, Python, C#, JavaScript, .NET, REST APIs, OPC UA, MQTT, PLCs, SCADA, IoT, AWS, Azure, Google Cloud, SPC
1mo
Save
Mark Applied
Hide
Test Automation Engineer(Web)
Alexandria or Aberdeen or Picatinny
HybridFull Time
3+ YOE3+ years test automation experience building automated test suites for web apps and APIs; experience with Selenium/Cypress, CI/CD, Docker/Kubernetes; programming in Java or JavaScript; secret clearance required.
Selenium, Cypress, TestNG, GitLab, JIRA, Docker, Kubernetes, Java, JavaScript, Cucumber, Gherkin, Git, Postman, REST Assured, SoapUI, Maven, Gradle, NPM, JMeter, SQL
6d
Save
Mark Applied
Hide
Quality Engineer
Bridgewater, New Jersey, United States
FieldFull Time
2+ YOEVerify vendor and project quality to specs (AWS, ASME, API, NACE), develop inspection/test procedures, perform audits/inspections, lead root-cause analyses, and maintain QA/QC documentation. QA certifications and 2+ years experience preferred.
Microsoft Office, Email, PDF, Adept
2mo
Save
Mark Applied
Hide
Engineer II, Fire Protection
Houston or Allentown
OnsiteFull Time
7+ YOEBachelor's in Fire Protection Engineering; 7+ years in fire protection; knowledge NFPA/API/OSHA; travel up to 40%.
NFPA standards, API standards, OSHA regulations, Microsoft Office, CoPilot, Hydraulic calculations software, Design software
3mo
Save
Mark Applied
Hide
Senior Test Engineer
Pittston, Pennsylvania, United States
$85k-$105k/yr OnsiteFull Time
6+ YOE6+ years QA experience; automation; C# and Playwright; Agile; API testing; SQL; collaboration.
C#, Playwright, API testing tools, SQL, Postman, Azure DevOps
1mo
Save
Mark Applied
Hide
Sr AI / ML Engineer Remote Nationwide or Hybrid in MN, DC, NJ
Basking Ridge or Minneapolis or Washington or United States
$120k-$215k/yr HybridFull Time
6+ YOEBS in CS/Engineering or equivalent, 6+ years software engineering, 4+ years building AI/ML (LLMs, Generative AI) and web/API solutions, cloud hosting experience (AWS preferred), Python or Java, chatbot/Conversational AI and NLP experience, US work authorization required.
LLMs, Generative AI, Python, Java, AWS, Chatbots, Conversational AI, NLP, Agentic AI, MCP, Strands Agents
1mo
Save
Mark Applied
Hide
Principal Security Engineer
Basking Ridge or Alpharetta or Ashburn or Irving or Cary or Temple Terrace
$121k-$231k/yr HybridFull Time
6+ YOE6+ years relevant experience, bachelor’s degree or equivalent experience, leadership experience, deep routing/switching and network security expertise, hands-on with Python/Ansible/Terraform, Splunk/SIEM, and network telemetry analysis.
Python, Ansible, Terraform, Splunk, Confluence, SIEM, API
1w
Save
Mark Applied
Hide
Principal Security Engineer
Basking Ridge or Alpharetta or Irving or Ashburn or Temple Terrace or Cary
$121k-$231k/yr HybridFull Time
6+ YOE6+ years network security experience, expertise in routing/switching and BGP/IGP security, SIEM/Splunk, automation with Python/Ansible/Terraform, and leadership in cross-functional projects.
Splunk, Python, Ansible, Terraform, API, ISE
2w
Save
Mark Applied
Hide
Automation Test Engineer II
Parsippany or Conshohocken or Wilkes-Barre or Alpharetta
$56k-$130k/yr HybridFull Time
3+ YOE3-5 years testing experience with 3+ years in test automation, bachelor\u0002s in CS/Engineering, proficiency with Tricentis Tosca/Selenium/Playwright/Cypress, SQL, API testing, CI/CD, and strong communication.
Tricentis Tosca, Selenium, Playwright, Cypress, SQL, Postman, REST Assured, Jenkins, GitHub Actions, Azure DevOps
2mo
Save
Mark Applied
Hide
Data and Generative AI Engineer
Raritan or New Brunswick
$79k-$128k/yr HybridFull Time
4+ YOEMinimum 4 years relevant experience; Bachelor's required (Master's preferred); strong Python; experience with LLM APIs and agent frameworks; Databricks, cloud (AWS, Microsoft Azure), data engineering, and data pipeline automation experience.
Python, Databricks, Unity Catalog, Delta Lake, Delta Live Tables (DLT), Databricks Asset Bundles, OpenAI, Anthropic, LangChain, LlamaIndex, Haystack, AWS, Microsoft Azure
Explore Jobs