API jobs in Colorado

Remote

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Today

Job Title: Oracle Integration & API Engineer Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: None Employee Type: Regular Percentage of Travel Required: Up to 10% Type of Travel: Continental US * * * The Opportunity: CACI is seeking a Principal Consultant specializing in Oracle Integration & API Engineering to support a large federal HR modernization initiative. In this role, you will design and maintain the integration fabric connecting Ora

Full-time

USD 98,500.00 - 206,800.00 per year

Senior Oracle Integration & API Engineer

Remote

•

Today

Job Title: Senior Oracle Integration & API Engineer Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: None Employee Type: Regular Percentage of Travel Required: Up to 10% Type of Travel: Continental US * * * The Opportunity: CACI is seeking a Senior Principal Consultant (Oracle Integration & API Engineer) to design, build, and sustain the integration fabric that connects Oracle Fusion Cloud HCM to the broader federal HR technology ecosystem.

Full-time

USD 114,600.00 - 252,100.00 per year

Senior .NET API Developer / Integration Architect

Remote

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Today

Job Title: Senior .NET API Developer / Integration Architect Work Location: Remote Position Overview The Senior .NET API Developer / Integration Architect is a senior technical specialist responsible for designing, developing, and managing secure enterprise integration services connecting Enterprise Application Services (EAS) with external vendor platforms across State systems. This role also serves as the technical lead responsible for translating business and architectural requirements into A

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Full-time

110,000 - 120,000

API Developer – Apigee Hybrid Migration

Remote

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Today

Role Overview:We are seeking a hands-on API Developer to join our core project team in a staff augmentation capacity. The primary focus of this role is to execute technical migration tasks, write automation scripts, and rebuild legacy integrations. You will work closely with our internal API team, relying on our lead architects for high-level guidance while you focus strictly on hands-on-keyboard execution.Primary Responsibilities:Axway to Apigee Migrations: Rebuild and migrate a large volume of

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Contract

Depends on Experience

Java Developer - API - Remote but onsite interview required

Remote

•

Today

Job Description: Java API Developer (Microservices) Location: Remote (Candidates must be available to interview onsite in the DC Metro area) Duration: Long-Term Contract Position Overview We are seeking a hands-on Java Developer to design, build, and support enterprise APIs and microservices from the ground up. This role is part of an Integration Engineering team responsible for developing modern, scalable services that enable communication between critical business applications and platforms.

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Contract

$50

Payments Development Lead--API DEVELOPER

Remote

•

Today

Job Requirement Payments Development Lead--API DEVELOPERJob ID:437597 Job Title: Payments Development Lead--API DEVELOPER Location:Remote Experience:612 Years Skill Area:Digital API Development Mandatory Skills & RequirementsStrong experience in API development, microservices, and cloud migration. Hands-on experience with AWS and cloud-native architecture. Strong Java and Spring Boot development experience. Experience designing and developing secure, scalable, high-performance RESTful APIs.

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Full-time

Depends on Experience

API Architect

Remote or Hybrid in Middletown, Pennsylvania

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8d ago

Job Title: API Architect Location: Remote PA (1 week onsite per month in Middletown, PA) Duration: 12 Months Work Hours: EST Preferred Locations: PA, NJ, NY, DE, OH Job Description: Seeking an experienced API Architect to design, develop, and govern enterprise API solutions, ensuring secure, scalable, and high-performance system integrations. Mandatory Skills: Strong experience in API development and architecture. REST, SOAP, and GraphQL APIs. API lifecycle management, versioning, and governanc

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Full-time

Depends on Experience

Senior Technology Architect - Azure, AWS, API Management (Apigee/Kong), Cloud-Native Architecture

Remote

•

Today

Role: Senior Technology Architect- Azure, AWS, API Management (Apigee/Kong), Cloud-Native Architecture Location: Remote Job Description: to drive strategic technology competencies and help shape the organization's cloud, API, integration and AI-enabled technology landscape. The ideal candidate will possess deep expertise in one or more technology domains including Azure, AWS, API Management (Apigee/Kong), Cloud-Native Architecture, AI Platforms, Agentic AI, MCP-based architectures and modern en

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Full-time

Depends on Experience

Senior Java/J2EE Engineer Telecom Billing & API

Denver, Colorado

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Today

Menzo Technologies Corp. has an urgent opening with our direct client for an experienced Senior Java/J2EE Engineer Telecom Billing & API in Denver, CO. We are looking for highly skilled candidates with strong hands-on experience in Java, Spring Boot, Microservices, REST API development, and telecom billing/pricing systems. Candidates should also have practical experience using AI-assisted development tools such as Claude or Claude Code. Position Details: Company: Menzo Technologies Corp. Posi

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Contract, Third Party

Depends on Experience

Lead Application Engineer (Python, TypeScript, API) - remote position

Remote

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16d ago

Available rate : $75/hr on W2 (no benefits) About R Systems: R Systems is a global leader in technology and analytics services, delivering innovative solutions to drive digital transformation across industries like Telecom, Banking, Healthcare, and Public Services. With over 4,400 professionals in 25+ countries, we are committed to helping our clients achieve operational excellence and enhanced customer experiences. We are proud to be Great Place to Work Certified in 10 countries, including Ind

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Contract

$75 - $80

Senior Java/J2EE Engineer – Telecom Billing & API

Denver, Colorado

•

Yesterday

Menzo Technologies Corp. has an urgent opening with our direct client for an experienced Senior Java/J2EE Engineer Telecom Billing & API in Denver, CO. We are looking for suitable candidates with strong hands-on experience in Java/J2EE, Spring Boot, Microservices, REST APIs, Telecom Billing/Pricing, AWS, Kafka, and API Management. Position Details: Company: Menzo Technologies Corp. Position: Senior Java/J2EE Engineer Telecom Billing & API Location: Denver, CO Work Arrangement: Onsite 5 days a

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Contract, Third Party

Depends on Experience

Application Developer (APIs, Events, Platform Engineering) :: Remote (Fulltime)

Remote

•

Today

We are seeking an experienced Application Developer (APIs, Events, Platform Engineering) to design, develop, and maintain scalable cloud-native applications and platform services on AWS. The ideal candidate will have strong expertise in Python, TypeScript, event-driven architectures, contract-first API development, platform engineering, and Infrastructure as Code (Terraform). This role requires hands-on experience building robust APIs, event-driven systems, authorization frameworks, and cloud-na

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Full-time

Mulesoft Developer

Remote

•

Today

Position: MuleSoft Developer Contract Duration: 6 months Location: Remote Technical Skills API design and development. Experience with Anypoint Studio, API Manager, CloudHub, and Exchange. Working with various connectors. Ability to write and optimize data mapping logic. Building APIs and integrations. Participate in daily scrum team meetings and other related agile ceremonies. Refine and understand functional user story requirements through direct interaction with the individuals reques

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Contract

Depends on Experience

Database Technical Lead – AWS Aurora PostgreSQL, Snowflake & Java APIs

Remote or Denver, Colorado

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8d ago

ain, and optimize scalable ETL/ELT pipelines using Talend, Python, AWS EMR, and related technologies. Develop, integrate, troubleshoot, and optimize enterprise APIs, including Java-based APIs. Perform advanced SQL development, data modeling, query optimization, and performance troubleshooting. Support Talend job design, pipeline orchestration, scheduling, monitoring, and production troubleshooting. Implement metadata management, data cataloging, and data lineage practices. Monitor and resolve pr

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Third Party, Contract

55 - 60

Senior API Developer

Remote

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4d ago

Senior API Developer (GraphQL | Neo4j | GenAI | AWS) Location: Remote (USA/ Canada) Job Type: Fulltime Direct Hire About the Role We are looking for a Senior API Developer to design, build, and maintain scalable APIs powering next-generation digital experiences and AI-driven applications. You will play a key role in developing secure, high-performance backend services while integrating GraphQL, Neo4j, cloud-native technologies, and Large Language Models (LLMs) into enterprise applications. T

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Full-time

110,000 - 150,000

API Backend Developer

Remote

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8d ago

Job DescriptionWe are looking for an experienced API Developer / API Engineer with strong expertise in API design, API security, and Python development. The ideal candidate will design, develop, secure, and maintain scalable RESTful APIs and integrations for enterprise applications.Key ResponsibilitiesDesign and develop scalable REST APIs and backend services.Develop APIs using Python and frameworks such as FastAPI, Flask, or Django.Define API standards, architecture, request/response structures

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Contract

30 - 40

Mulesoft Engineer

Remote

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3d ago

Role: Mulesoft EngineerClient: Infosys / --Location: RemoteJob DescriptionWe are looking for an experienced, hands-on MuleSoft Engineer with 5+ years of experience in API development and application integration. The candidate will be responsible for designing, developing, implementing, and maintaining integrations using the MuleSoft Anypoint Platform.Key ResponsibilitiesDesign and develop APIs using MuleSoft.Build and maintain application integrations.Work with REST and SOAP APIs.Develop integra

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Contract, Third Party

40 - 55

Senior Java/J2EE Engineer – Telecom Billing & API

Denver, Colorado

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2d ago

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Contract, Third Party

Depends on Experience

Software Developer/Python/API/pySpark/Cloud native/AWS/databricks/Require federal experience

Remote

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14d ago

Duties and Responsibilities Serve as the senior technical lead for cloud-native development, Databricks engineering, database optimization, and application integration.Design, build, secure, test, and deploy software, APIs, and automated data pipelines in AWS and Databricks environments.Lead the cloud engineering team's CI/CD, Git workflows, automated testing, and deployment practices.Develop AI/ML and agentic applications and tools alongside Government technical teams.Required Qualifications Se

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Contract

00 - 00

Sr. Fullstack Engineer / .Net / React Native / API, AWS / Mobile+ - Remote

Remote or Newport Beach, California

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Today

Our client is a Southern California product engineering company building streaming applications for media organizations. Its platform supports live and on-demand content across web, mobile, and connected TV. They are seeking a Senior Full-Stack Software Engineer (.NET, React + Native Apps) for a remote role. This is a hands-on position spanning backend services, web applications, and native or cross-platform clients. The ideal candidate has strong C#/.NET and React/TypeScript experience and has

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Full-time

USD 130,000.00 - 160,000.00 per year

API jobs in Colorado, USA