API Developer Jobs in California

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Remote Cybersecurity Engineer (API/Web App Security)

Software Guidance & Assistance

Remote or Jacksonville, Florida, USA

Contract

Software Guidance & Assistance, Inc., (SGA), is searching for a Remote Cybersecurity Engineer (API/Web App Security) for a CONTRACT assignment with one of our premier Healthcare Services clients for a Remote position. Top Skills Needed: Azure/Entra ID Scripting (Powershell or Python) API Security frameworks OWASP top 10 Responsibilities: We are seeking an experienced Cyber Security Engineer to join our team, responsible for ensuring the security of our applications and APIs. This role w

API Technical Writer

GlobalLogic Inc.

Remote

Full-time

Job Description: Fluent in authoring API reference documents and developer guides that help empower others to create innovative new business applicationsCapable of crafting content that is as technically sound as it is clear and conciseAttuned to the differences between all methods in the REST architectural styleWilling to experiment with new ways to organize and deliver content onlineAutonomous and comfortable juggling multiple, overlapping, and, at times, competing prioritiesComfortable forgin

Software Engineer, Public API

Notion

San Francisco, California, USA

Full-time

About Us: We're on a mission to make it possible for every person, team, and company to be able to tailor their software to solve any problem and take on any challenge. Computers may be our most powerful tools, but most of us can't build or modify the software we use on them every day. At Notion, we want to change this with focus, design, and craft. We've been working on this together since 2016, and have customers like OpenAI, Toyota, Figma, Ramp, and thousands more on this journey with us. Tod

Lead Software Engineer - Backend & APIs

ADDSOURCE

Remote or US

Third Party

Title: Lead Software Engineer - Backend & APIs Position Type: Contract Location: Remote across USA/ Canada Location: Canada (Ideal) but also open for USA candidates too. Highlights/Mandatory: An expert in designing and scaling distributed, event-driven backend architectures using TypeScript, NestJS, and PostgreSQL. Extensive experience designing and optimizing PostgreSQL schemas and queries. Mastery of ORM tools (TypeORM, Prisma) and event-driven programming (Kafka, RabbitMQ, or similar). Stro

QA Engineer - Manual Tester [ API & Strong SQL ] - In-Person Interview is a MUST

Xoriant Corporation

Mountain View, California, USA

Contract

Position Title: Manual Tester [API / SQL] Location: Mountain View, CA (Hybrid 2 days) Duration: 6 - 12 Months contract with possibility of extension Interview - 2 rounds [1st Video and 2nd Inperson] Please find complete job description below: 8+ hands-on years of manual testing and test automation experience.Need Manual exp, candidates should be willing to start with manual testing and gradually move to automation.Good experience in API Testing.Need selenium or web driver exp.Solid exp is SQL qu

QA Engineer AI Product Testing ( API & Security Scenarios)

Avila IT

Remote

Full-time

We are seeking a meticulous QA Engineer with hands-on experience in testing AI-driven platforms to join our dynamic team. This role focuses on validating generative AI models (like Gemini, PaLM), API integrations, data security, and user experience across web-based AI studio environments. You ll play a critical role in ensuring functional reliability, ethical compliance, and top-tier performance across AI workflows including prompt/response behaviors, API validation, and UI responsiveness.Key Re

Senior API Test Automation Engineer for API and Data Pipeline Testing

Resource Informatics Group

Remote

Contract

Title: Senior API Test Automation Engineer for API & Data Pipeline Testing Location: NYC - Candidate should follow EST Time - Remote Duration: 6+ months Rate: $Market All Inclusive 1. Purpose The purpose of this Statement of Work (SOW) is to define the responsibilities and deliverables of a Senior API Test Automation Engineer engaged to design, develop, and maintain automated testing solutions for REST APIs, Kafka data ingestion pipelines, and backend validations for FDR Squad. 2. Scope of Work

Principal Plant Process API Eng

Bayer Corp

Berkeley, California, USA

Full-time

At Bayer we're visionaries, driven to solve the world's toughest challenges and striving for a world where 'Health for all Hunger for none' is no longer a dream, but a real possibility. We're doing it with energy, curiosity and sheer dedication, always learning from unique perspectives of those around us, expanding our thinking, growing our capabilities and redefining 'impossible'. There are so many reasons to join us. If you're hungry to build a varied and meaningful career in a community of br

Senior Engineering Manager, Ecosystems

Postman, Inc.

San Francisco, California, USA

Full-time

Who Are We? Postman is the world's leading API platform, used by more than 40 million developers and 500,000 organizations, including 98% of the Fortune 500. Postman is helping developers and professionals across the globe build the API-first world by simplifying each step of the API lifecycle and streamlining collaboration-enabling users to create better APIs, faster. The company is headquartered in San Francisco and has an office in Bangalore, where it was founded. Postman is privately held,

Lead Software Engineer

eBay Inc.

San Jose, California, USA

Full-time

At eBay, we're more than a global ecommerce leader - we're changing the way the world shops and sells. Our platform empowers millions of buyers and sellers in more than 190 markets around the world. We're committed to pushing boundaries and leaving our mark as we reinvent the future of ecommerce for enthusiasts. Our customers are our compass, authenticity thrives, bold ideas are welcome, and everyone can bring their unique selves to work - every day. We're in this together, sustaining the futur

(BizBuySell) - Software QA Engineer (Manual Web/API Testing)

Costar Group

San Francisco, California, USA

Full-time

(BizBuySell) - Software QA Engineer (Manual Web/API Testing) Job Description CoStar Group (NASDAQ: CSGP) is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces. Included in the S&P 500 Index and the NASDAQ 100, CoStar Group is on a mission to digitize the world's real estate, empowering all people to discover properties, insights and connections that improve their businesses and lives. CoStar Group's Business for Sale marketplaces

Product Manager, API & Integrations

Glue

San Francisco, California, USA

Full-time

Job DescriptionGlue is a well-funded startup working on the next generation of work communication tools. We believe that today s work chat is noisy, unstructured, and not designed for productivity. We re drawing from decades of communication innovation in structured notes, email, groups, and real-time messaging to create a tool that gets out of the way and lets teams exchange information and make decisions in a more natural way. Opportunity We re looking for a technical, execution-focused Produc

Senior JAVA Backend API Engineer

Guardian Life Insurance Company

Remote or Holmdel, New Jersey, USA

Full-time

Overview: Guardian's Group Benefits API Technology Team is looking for versatile Software Engineers skilled in Java based technologies, who are driven, who want to make a difference and code with purpose. The Backend API/Integrations Engineer is responsible for providing seamless data integration between Enterprise Applications using Real time Restful APIs, messaging, and event streams. You Will: Develop well crafted, well-engineered, robust, scalable software integration solutions that are Pro

Distributed Systems Engineer (L5) - Service Mesh & API Gateway

Netflix, Inc.

Remote

Full-time

Netflix is one of the world's leading entertainment services, with over 300 million paid memberships in over 190 countries enjoying TV series, films and games across a wide variety of genres and languages. Members can play, pause and resume watching as much as they want, anytime, anywhere, and can change their plans at any time. About the Team The Application Networking Group owns the communication backbone for Netflix's Cloud, including the Edge Gateway and services responsible for handling a

Senior Software Engineer (Frontend), API Client

Postman, Inc.

San Francisco, California, USA

Full-time

Who Are We? Postman is the world's leading API platform, used by more than 40 million developers and 500,000 organizations, including 98% of the Fortune 500. Postman is helping developers and professionals across the globe build the API-first world by simplifying each step of the API lifecycle and streamlining collaboration-enabling users to create better APIs, faster. The company is headquartered in San Francisco and has an office in Bangalore, where it was founded. Postman is privately held,

Microservices API engineer-

HCL America Inc.

Remote

Full-time

We are HCLTech, one of the fastest-growing large tech companies in the world and home to 218,000 people across 60 countries, supercharging progress through industry-leading capabilities centered around Digital, Engineering and Cloud. ( ) The driving force behind that work, our people, are diverse, creative, and passionate, raising the bar for excellence on a regular basis. We, in turn, work hard to bring out the best in them as we strive to help them find their spark and become the best version

Microservices engineer- API / Security

HCL America Inc.

Remote

Full-time

We are HCLTech, one of the fastest-growing large tech companies in the world and home to 218,000 people across 60 countries, supercharging progress through industry-leading capabilities centered around Digital, Engineering and Cloud. ( ) The driving force behind that work, our people, are diverse, creative, and passionate, raising the bar for excellence on a regular basis. We, in turn, work hard to bring out the best in them as we strive to help them find their spark and become the best version

Sr. C#/.NET Integration Engineer (Apache NiFi/FHIR API's)

ConsultNet, LLC

Remote or Dallas, Texas, USA

Full-time

Sr. C#/.NET Integration Engineer (Apache NiFi/FHIR API's) Remote (MST, Central or Eastern Time Zone) 6-12-month Contract or Contract to Hire Pay Rate: 75-80/hr A rapidly growing technology-driven organization focused on streamlining how sensitive records are managed, processed, and shared. They specialize in transforming manual, compliance-heavy workflows into secure, efficient digital solutions-helping clients improve access, accuracy, and overall operational performance across regulated env

Technical Manager - SAP

Korn Ferry

Remote

Contract

We have partnered with our client in their search for a Technical Manager - SAP. This position will provide deep technical knowledge, end to end technical oversight from design through owning the implementation of the solution including, but not limited to, integrations with internal and external systems/services, heavily focused on S/4 RISE, SAP BTP Integration Suite, APIs integrations B2B, A2A, and B2C. Primary focus will be on supporting existing integrations between SAP S/4HANA and Cloud sys

Senior Systems Software Engineer, TAO Software and API

NVIDIA Corporation

Santa Clara, California, USA

Full-time

We are the NVIDIA-Metropolis TAO (Train-Adapt-Optimize) group. We are hiring a Senior Systems Software Engineer to join our TAO Software and API team. The TAO toolkit includes scalable and user-friendly modules for training, fine-tuning, and optimization of machine learning models, particularly in Computer Vision and Multi-Modal AI domains. If you love exploring new tech and want to help create ethical AI solutions, we'd love for you to think about joining our team at NVIDIA. In this role, you