375 sr api developer jobs at 164 companies in New Jersey
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Senior API Engineer - Advisor I
Alpharetta or Omaha or Berkeley Heights
$90k-$158k/yrOnsiteFull Time
FiservNew York Stock Exchange: FI: Provides financial technology and payment processing services to institutions.
8+ YOE8+ years in Java/J2EE engineering, RESTful APIs, Spring, Azure, cloud–native services, CI/CD, DevSecOps, and cloud platforms; experience with relational/non-relational databases and messaging systems.
Selective InsuranceNASDAQ: SIGI: Provider of commercial and personal property and casualty insurance.
5+ YOE5+ years of experience designing and developing complex applications; Bachelor's preferred in CS/Engineering; strong .NET/C#, API, SQL; cloud, Azure, DevOps, and leadership skills.
Gurugram or United States or California or Colorado or Connecticut or Maryland or Nevada or New Jersey or New York or Ohio or Rhode Island or Washington
RemoteFull Time
AlkamiNASDAQ: ALKT: Cloud-based digital banking solutions for banks and credit unions.
5+ YOE5+ years software development experience (or 3+ with advanced degree); strong Java or C# skills; full-stack experience with React/Angular, HTML/CSS, cloud-native architectures, AWS/Kubernetes, SQL/NoSQL, REST APIs, monitoring/OpenTelemetry; on-call and mentoring experience.
Java, C#, JavaScript, React, Angular, HTML, CSS, SQL, NoSQL, Amazon Web Services (AWS), Kubernetes, OpenTelemetry, Flutter, REST 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/yrRemoteFull Time
TradeStation: Provider of online brokerage services and trading technology.
7+ YOE7+ MgmtLead API platform strategy, manage teams, design API governance, and drive cloud-native infrastructure—REST/GraphQL/gRPC with AWS/Kubernetes.
Senior Software Engineer - API Platform & Client Tooling
Bellevue or Livingston or New York City or San Francisco or Sunnyvale
$153k-$204k/yrOnsiteFull Time
CoreWeaveNASDAQ: CRWV: Cloud platform providing GPU-accelerated infrastructure for AI workloads.
Production Go experience, API design and versioning, client tooling/SDK/CLI or provider work, code-generation or compiler/tooling experience preferred, cross-team collaboration and mentorship.
KPMG: Global professional services network providing audit, tax, and advisory.
3+ YOE3+ years software development experience; strong Python, C# or .NET, Angular and SQL skills; experience with microservices, REST APIs, authentication, and Azure; ML framework experience preferred.
Microsoft Azure, Microsoft Azure App Services, Microsoft Azure Functions, Microsoft Azure SQL Database, Azure OpenAI, Angular, TypeScript, Python, .NET Framework, C#, SQL, PyTorch, TensorFlow, scikit-learn, DevOps
Des Moines or Ashburn or Austin or Chaska or Chicago or Dallas or Lewisville or Kansas City or Nashville or Florida or Georgia or North Carolina or New Jersey or Pennsylvania
HybridFull Time
LightEdge: Provides hybrid cloud, colocation, and managed IT infrastructure services.
5+ YOE5+ years in software engineering, systems integration, and AI-enabled workflow delivery; experience with enterprise integrations (ServiceNow, Salesforce), cloud deployments, Python, APIs, and middleware.
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/yrHybridFull Time
DLA Piper: Global law firm providing comprehensive legal and business services.
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.
CognizantNasdaq: CTSH: Provides IT consulting and digital business process services.
10+ YOE10+ years software development experience, including 3+ years in enterprise AI/ML or Generative AI; strong Python, AWS, LLM, agentic AI, API, cloud security, and stakeholder leadership experience.
CognizantNASDAQ: CTSH: Provides IT consulting and technology services to global enterprises.
10+ YOE10+ years software development experience, including 3+ years building enterprise AI/ML or Generative AI solutions; strong Python, AWS, LLM, cloud security, API, architecture, communication, and leadership skills.
JPMorgan ChaseNYSE: JPM: Global financial services firm providing banking and investment solutions.
5+ YOE5+ years applied software engineering experience, formal training/certification, strong Python development, experience with sell-side analytics platforms (JPMC Athena, SecDB, Quartz), Kafka, AWS and AWS Lake Formation, relational and NoSQL databases, API and microservices development.
Python, JPMC Athena, SecDB, Quartz, Kafka, AWS, AWS Lake Formation
QVC GroupNASDAQ: QVCGA: Provides video-driven shopping experiences across television and digital platforms.
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)
Senior QA Automation Engineer – API Automation & Performance Testing
Parsippany, New Jersey, United States
$53k-$93k/yrHybridFull Time
CognizantNasdaq: CTSH: Provides global information technology and business process outsourcing services.
Strong QA automation experience with API and performance testing using Postman, REST Assured, JMeter/K6; Java and JSON proficiency; Azure DevOps experience; SAFe Agile experience; strong communication and analytical skills.
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 District of Columbia
$125k-$175k/yrHybridFull Time
NinjaTrader: Provides futures brokerage services and a trading software platform.
5+ YOE5+ years software engineering with API development and partner integrations; strong REST/WebSocket/JSON/OAuth skills; proficiency in TypeScript/JavaScript or Python; excellent troubleshooting and communication.
New York City or California or Oregon or Colorado or Texas or Wisconsin or Minnesota or Louisiana or Florida or Virginia or North Carolina or South Carolina or New Jersey or New York or Connecticut or United Kingdom
$130k-$150k/yrRemoteFull Time
TixTrack: Provides cloud-based ticketing and venue management software for venues.
7+ YOE7+ years full-stack SaaS development with .NET Core back-end and modern frontend frameworks (React/Angular/Vue); strong SQL, API, SRE/DevOps appreciation, Agile experience, bachelor’s degree or equivalent.
.NET Core, React, Angular, Vue, HTML, CSS, JavaScript, SQL, Stripe, Microsoft Office, Google Suite, Slack, JIRA
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/yrRemoteFull 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.
Delan Associates: Provides engineering and professional services to government agencies.
Strong Java (8/11/17+) and Spring Boot experience, microservices and REST API development, Angular frontend exposure, SQL/NoSQL knowledge, Kafka familiarity, CI/CD experience; candidates must be based in NY or NJ and eligible on H4 visa.
RepligenNASDAQ: RGEN: Develops and manufactures bioprocessing technologies for pharmaceutical drug production.
7+ YOEBachelor's in a technical field,7+ years Salesforce development experience,Platform Developer I required; expertise in Apex,LWC,Visualforce,SOQL/SOSL,APIs and integrations; strong security, data modeling, and agile experience.
Salesforce, Sales Cloud, Service Cloud, Experience Cloud, Data Cloud, Salesforce CPQ, Apex, Lightning Web Components (LWC), Visualforce, SOQL, SOSL, APIs, REST, SOAP, KBMax, Xactly, SAP, Einstein, Agentforce, Agile, Scrum