1,032 sr api developer jobs at 531 companies in New York
2w
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Sr Java API Developer - New York
New York, New York, United States
$40k-$140k/yr OnsiteFull Time
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
2w
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Principal Engineer API Platform
Minnesota or New York or Texas or Illinois
$144k-$288k/yr RemoteFull Time
10+ YOE3+ Mgmt10+ years software engineering with enterprise API design, API security (OAuth2/OIDC/mTLS), API gateways, cloud platforms, Java/Node.js, and experience shaping technical direction across teams.
OAuth 2.0, OIDC, mTLS, Apigee, Kong, Azure APIM, JavaScript, TypeScript, Node.js, React, Java, Spring Boot, GCP, AWS, Azure, GraphQL, Kafka, FHIR, HL7, MCP, CI/CD, LLM
1mo
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Software Engineer, Developer API
New York City or San Francisco or United States or Canada or United Kingdom
$168k-$330k/yr HybridFull Time
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.
Python, Temporal, Postgres
2mo
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Senior Software Engineer | API
New York, New York, United States
$140k-$220k/yr HybridFull Time
Backend/API engineering focus with REST, distributed systems, and developer experience.
2d
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Member of Technical Staff (Software Engineer, Backend API)
London or Serbia or Berlin or New York City
$200k-$350k/yr OnsiteFull Time
Experience designing and operating distributed high-load systems, cloud infrastructure, Kubernetes, CI/CD, and either API product engineering or platform operations; strong autonomy and product sense required.
Go, Rust, Python, MCP, Kubernetes, CI/CD
1w
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Python API Engineer
Fort Mill or Charlotte or New York City or San Diego or Austin
$106k-$177k/yr OnsiteFull Time
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).
Python, AWS Lambda, Amazon API Gateway, CloudWatch, IAM, S3, Terraform, Jenkins, GitHub Actions, SQL, AWS SAM, Serverless Framework, EventBridge, SNS, SQS, Dynatrace, Datadog, OpenTelemetry, Git
3w
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API Developer/Data Engineer Managing Consultant-Fraud/AI
McLean or New York City or Arlington or United States
$130k-$216k/yr HybridFull Time
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.
Python, Java, JS, C#, .NET, RESTful API, XML, SQL Server, SQL, CSV, TXT, JSON, Parquet, GCP, Apigee, Kong, Azure API Management, AWS API Gateway, LexisNexis, Oracle Mantas, Actimize, Fircosoft, Oracle Mantas, World-Check, Dow Jones, Chainalysis, Elliptic, TRM Labs
1w
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Sr. Engineer, Software Development
New York City or Birmingham or Miami or Tampa or Blue Ash or Cincinnati or Los Angeles or San Francisco
$121k-$173k/yr HybridFull Time
5+ YOE5+ years software engineering experience with secure API/microservice development, cloud (Azure) and observability; 1+ year technical leadership; fintech or BaaS experience preferred.
C#, .NET, SQL, APIM, Azure SQL, Cosmos DB, Key Vault, Service Bus, Event Hubs, Datadog, Grafana, Git, OAuth2, Open API
1mo
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Sr. Software Engineer
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
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
1mo
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Full Stack Software Engineer, API Experience
New York City, New York, United States
$293k-$385k/yr OnsiteFull Time
5+ YOE5+ years engineering experience; strong TypeScript and React; proficiency in one or more backend languages (Python, Go, Rust, TypeScript); experience building production APIs, services, SDKs, and developer tooling.
TypeScript, React, Python, Go, Rust, SDKs
1w
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Sr Software Engineer
New York, New York, United States
$149k-$199k/yr HybridFull Time
5+ YOE5+ years software development experience with functional Scala, AWS and Kubernetes; strong API, distributed systems, observability, and CI/CD skills.
Scala, ZIO, Cats, Cats Effect, RX Java, Kotlin, Clojure, Lisp, Haskell, OCaml, Elm, Typescript, AWS, Cloudformation, Terraform, Kubernetes, Docker, Istio, Spinnaker, Datadog, Git, Jira
1mo
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Sr. Software Developer
Orange or Arizona or California or Florida or Maryland or Maine or Michigan or Missouri or North Carolina or Nevada or New York or Ohio or Oklahoma or Oregon or South Carolina or Texas or Utah or Washington or Wyoming
$120k-$145k/yr RemoteFull Time
7+ YOE7+ years professional software development with Microsoft .NET stack, experience with React/TypeScript, RESTful API design, Playwright, cloud deployments (AWS preferred), practical use of Claude or similar LLM agent tools, and demonstrated technical leadership.
ASP.NET WebForms, React, TypeScript, C#, .NET Web API, RESTful API, Claude, Redux Toolkit, Zustand, Playwright, CI/CD, Azure DevOps, AWS, ECS, Lambda, Step Functions, Bedrock, Azure, GCP
2mo
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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
1d
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Sr Software Engineer
New York, United States
$124k-$160k/yr RemoteFull Time
5+ YOE5+ years of software engineering or backend development experience; strong server-side programming, REST APIs, microservices, databases, cloud environments, infrastructure as code, observability, CI/CD, DevOps, and web security knowledge.
Python, Java, Node.js, Ruby, Go, REST, PostgreSQL, MySQL, MongoDB, DynamoDB, AWS, GCP, Azure, Terraform, CloudFormation, New Relic, Datadog, CI/CD, DevOps, OWASP, iCIMS
1mo
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Principal Identity and API Architect
London or New York
€90k-€130k/yr OnsiteFull Time
8+ YOE8+ years software engineering/platform architecture experience (4+ years focused on identity/IAM/API security). Hands-on Auth0, OpenFGA/ReBAC, OAuth2/OIDC/SAML, AWS identity services, API gateway patterns, and backend development in Go/Java/Python.
Auth0, Okta, OpenFGA, SpiceDB, Ory Keto, Traefik, Kong, AWS API Gateway, IAM, Cognito, Secrets Manager, KMS, STS, Lambda, OAuth 2.0, OpenID Connect (OIDC), SAML 2.0, JWT, JWKS, Go, Java, Python
1mo
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Sr Software Engineer
New York, New York, United States
$400k-$500k/yr OnsiteFull Time
10+ YOE10+ years modern C++ low-latency development, expertise in cache coherency, memory management, multithreading and lock-free queues, TCP/UDP and latency measurement, API/protocol design; Git/GitLab and Wireshark proficiency; Solarflare and FIX experience a plus.
C++, Git, GitLab, Wireshark, Solarflare, TCP, UDP, FIX
4d
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Sr AI Engineer
New York City, New York, United States
$150k-$215k/yr OnsiteFull Time
6+ YOE6+ years building and operationalizing GenAI solutions; mastery of agent orchestration frameworks; expert Python; LLM APIs, prompt engineering, vector databases, RAG, APIs, Docker, and Kubernetes.
LangChain, LangGraph, CrewAI, Microsoft AutoGen, OpenAI, Anthropic, AWS Bedrock, Pinecone, Weaviate, Python, FastAPI, Node.js, Go, Docker, Kubernetes
4w
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Senior Software Engineer - API Platform & Client Tooling
Bellevue or Livingston or New York City or San Francisco or Sunnyvale
$153k-$204k/yr OnsiteFull Time
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.
Go, gRPC, protocol buffers, Buf, ConnectRPC, Terraform Plugin Framework, Cobra, CWIC
4d
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Sr AI Engineer
New York City, New York, United States
$150k-$215k/yr OnsiteFull Time
6+ YOE6+ years building and operationalizing GenAI solutions; mastery of agent orchestration frameworks; expert Python; LLM APIs, prompt engineering, vector databases, RAG, APIs, Docker, Kubernetes, and strong communication.
LangChain, LangGraph, CrewAI, Microsoft AutoGen, OpenAI, Anthropic, AWS Bedrock, Pinecone, Weaviate, Python, FastAPI, Node.js, Go, Docker, Kubernetes
1mo
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SR UI Developer
New York City, New York, United States
OnsiteFull Time
Experience building type-safe React components with TypeScript; proficiency in HTML5, Tailwind CSS, Next.js or Remix, Node.js APIs, responsive design, WCAG accessibility, performance optimization, and automated testing.
React, TypeScript, HTML5, Tailwind CSS, Next.js, Remix, Node.js, WCAG
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