1,699 api engineer jobs at 811 companies in Dover, NJ
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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.
Photon: A technology employer building secure, scalable, and maintainable backend and API solutions.
5+ YOE5+ years Java backend experience, proficiency with Java 11/17, Spring ecosystem, RESTful APIs, relational and NoSQL databases, API security, CI/CD, and testing frameworks.
Java 11, Java 17, Spring Boot, Spring MVC, Spring Data JPA, Spring Security, Hibernate, REST, OpenAPI/Swagger, JSON, GraphQL, PostgreSQL, MySQL, Oracle, MongoDB, Cassandra, Apache Kafka, RabbitMQ, Maven, Gradle, JUnit, Mockito, REST Assured, Jenkins, GitHub Actions, GitLab CI, Microsoft Azure DevOps, Docker, Kubernetes, Git, Redis, Hazelcast, Prometheus, Grafana, ELK Stack, Splunk
API Developer/Data Engineer Managing Consultant-Fraud/AI
McLean or New York City or Arlington or United States
$130k-$216k/yrHybridFull Time
Guidehouse: Provides management and technology consulting services to diverse organizations.
5+ YOEUS citizen able to obtain Public Trust,5+ years in data engineering/integration, proficiency in Python, Java/JS, .NET (C#), RESTful APIs, XML, SQL/SQL Server, GCP, data formats (JSON, Parquet), and experience leading technical teams.
TripleLift: Programmatic advertising platform for high-quality digital ad experiences.
8+ YOEDesign and own end-to-end identity and API architecture including Auth0, OAuth/OIDC, ReBAC/OpenFGA, API gateway design, and AWS identity infrastructure; 8+ years engineering/architecture experience with 4+ years focused on identity/IAM/API security.
7+ YOE7+ years software engineering experience with Python, REST APIs, AWS (Lambda, API Gateway, CloudWatch, IAM, S3), Terraform, CI/CD (Jenkins/GitHub Actions), and production support; BS in CS or related (MS preferred).
Nayya: AI platform optimizing employee health and wealth benefits.
6+ YOE6+ years building backend services and public/partner-facing APIs; deep API design and distributed systems expertise; production experience with Python, Go, Node, Typescript, or Ruby on Rails on AWS; mentoring and on-call experience.
Guardian Life: Provides life, disability, dental, and vision insurance products.
10+ YOE5+ Mgmt10+ years in software engineering or platform engineering, 5+ years leading teams, Bachelor's in CS/Engineering or equivalent, expertise in API design, microservices, security, integration patterns, and experience modernizing legacy systems.
New York City or San Francisco or United States or Canada or United Kingdom
$168k-$330k/yrHybridFull Time
Ramp: Financial operations platform for corporate cards and spend management.
5+ YOE5+ years backend engineering, experience building APIs/platforms, hands-on with Python, Temporal, and Postgres, familiarity with AI coding agents, strong ownership and developer-experience focus.
eBayNASDAQ: EBAY: Global online marketplace for buying and selling diverse products.
3+ YOE3+ years software engineering experience; strong Java and Spring Boot skills; GraphQL and API design experience; CI/CD (Maven/Jenkins); Kubernetes and cloud-native deployments; focus on reliability, scalability, and developer experience.
Java, Spring Boot, GraphQL, REST, CI/CD, Maven, Jenkins, Kubernetes
OpenAI: Develops artificial intelligence models and generative AI software services.
7+ YOE7+ years of professional engineering experience; experience building SDKs; design and implement SDKs for multiple languages; collaborate across teams.
United States or New York City or Dallas or Austin or Houston or Chicago or Nashville or Miami or Atlanta
$140k-$160k/yrRemoteFull Time
TheGuarantors: Provides lease guarantees and security deposit alternatives for rentals.
3+ YOE3+ years building backend services with Go/Java/Python/C#; strong API design, SQL/PostgreSQL, cloud (AWS/Azure/GCP/OCI) and Terraform experience; professional software engineering experience and strong communication/system design skills.
Member of Technical Staff (Software Engineer, API Platform)
San Francisco or New York City
$220k-$405k/yrOnsiteFull Time
Perplexity: AI-powered search engine providing conversational answers with citations.
5+ YOE5+ years backend engineering with Python, Go, or Rust; strong high-traffic API design, AWS and Kubernetes experience, CI/CD and DevOps fluency; experience with AI APIs a plus.
Fidelity Investments: Provides investment management, retirement planning, and brokerage services.
8+ YOEBachelor's or Master's in CS/Software Engineering, 8+ years building and operating production platforms, deep Python and distributed systems expertise, Linux fluency, AWS and CI/CD experience, infrastructure-as-code, ML platform enablement, and cross-org technical leadership.
Tabbed: Frictionless mobile payments and guest intelligence for restaurants.
5+ YOE5+ years software engineering experience; strong TypeScript/Node.js and system design skills; experience with cloud, APIs, payments or POS integrations; independent ownership and strong execution.
Coast: Smart fuel cards and expense management for commercial fleets.
4+ YOE4+ years total experience (≥3 years engineering); strong backend/API design, data modeling, OAuth/API key auth, AWS; experience integrating ERPs/telematics/accounting tools; strong communication and problem-solving.
AWS, Oracle, Samsara, NetSuite, QuickBooks, OAuth, API keys, API
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.
X Developer Platform – Forward Deployed Engineer, X API
New York or Palo Alto
$180k-$440k/yrHybridFull Time
xAI: Develops advanced artificial intelligence systems to understand the universe.
5+ YOE5+ years in a customer-facing technical role; strong DevEx focus; expert in API-driven development; proficient in multiple languages; excellent communication and project management.
Senior QA Automation Engineer – API Automation & Performance Testing
Parsippany, New Jersey, United States
$53k-$93k/yrHybridFull Time
CognizantNASDAQ: CTSH: Provides IT consulting and technology services to global enterprises.
Design and implement API automation and performance test strategies; experience with API testing, performance testing, test frameworks, Azure DevOps, Java, and mentoring peers.