

Connexus Technology, LLC
Senior Engineer – Integration & API Architecture
⭐ - Featured Role | Apply direct with Data Freelance Hub
This role is for a Senior Engineer – Integration & API Architecture, a 6-month contract position with a pay rate of "$X/hour". Key skills include API architecture, event-driven systems, and modern security practices. Experience in highly regulated industries is preferred.
🌎 - Country
United States
💱 - Currency
$ USD
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💰 - Day rate
624
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🗓️ - Date
July 2, 2026
🕒 - Duration
Unknown
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🏝️ - Location
Unknown
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📄 - Contract
Unknown
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🔒 - Security
Unknown
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📍 - Location detailed
United States
-
🧠 - Skills detailed
#MDM (Master Data Management) #Scala #Data Security #Strategy #Data Architecture #Security #Leadership #Data Management #AWS (Amazon Web Services) #Microservices #AI (Artificial Intelligence) #Boomi #Kafka (Apache Kafka) #REST API #API (Application Programming Interface) #REST (Representational State Transfer)
Role description
We are seeking a highly experienced Senior Engineer – Integration & API Architecture to lead the design, implementation, and governance of enterprise API and integration solutions. This is a hands-on technical leadership role for an experienced engineer who thrives in fast-paced environments, can work independently, and is comfortable navigating ambiguity while driving technical initiatives to completion.
The ideal candidate has deep expertise in API architecture, event-driven systems, enterprise integration patterns, and modern authentication and security practices.
Key Responsibilities
• Lead the API and integration intake process, including solution design, prioritization, and implementation across multiple initiatives.
• Design, develop, and govern enterprise API standards using REST and event-driven architectures.
• Define and enforce API contracts, integration best practices, and governance frameworks.
• Design secure integration solutions, including tokenization and protection of sensitive data (PII/NPI) across environments.
• Build and support scalable synchronous and asynchronous integration patterns.
• Configure, manage, and optimize API gateway and integration/orchestration platforms.
• Design and support event streaming solutions using Kafka or AWS MSK.
• Contribute to workflow orchestration using Temporal or similar durable execution frameworks.
• Ensure API contracts align with enterprise data models and collaborate closely with data architecture teams.
• Provide hands-on technical leadership, mentor engineering teams, and remove implementation roadblocks.
• Drive architecture decisions while balancing scalability, security, performance, and maintainability.
Required Qualifications
• Extensive experience designing and implementing enterprise API and integration architectures.
• Strong expertise with RESTful APIs, OpenAPI, and event-driven integration patterns.
• Experience with API governance, lifecycle management, and contract design.
• Hands-on experience with API gateway platforms such as Gravitee, Apigee, Kong, AWS API Gateway, or similar.
• Experience with integration/iPaaS platforms such as Workato, MuleSoft, Boomi, or equivalent.
• Strong knowledge of OAuth 2.0, OpenID Connect (OIDC), and modern API security practices.
• Experience implementing event-driven architectures using Kafka, AWS MSK, or similar messaging platforms.
• Experience implementing tokenization or other data protection solutions for sensitive information.
• Strong understanding of microservices and distributed systems.
• Excellent problem-solving skills with the ability to work independently and lead technical initiatives.
Preferred Qualifications
• Experience with Gravitee and/or Workato.
• Experience with Temporal or similar workflow orchestration platforms.
• Familiarity with AsyncAPI specifications.
• Experience with canonical data models, enterprise data architecture, or Master Data Management (MDM).
• Exposure to AI agent orchestration frameworks such as LangGraph or similar technologies.
• Experience working within highly regulated industries such as financial services, insurance, or healthcare.
Desired Skills
• Enterprise API Architecture
• Integration Architecture
• Event-Driven Architecture
• Kafka / AWS MSK
• API Gateway Management
• REST APIs
• OAuth2 / OpenID Connect
• Microservices
• API Governance
• Integration Platforms (Workato, MuleSoft, Boomi, etc.)
• Data Security & Tokenization
• Strong communication and stakeholder management skills
If you are passionate about building scalable integration solutions and driving enterprise API strategy while remaining hands-on with implementation, we encourage you to apply.
We are seeking a highly experienced Senior Engineer – Integration & API Architecture to lead the design, implementation, and governance of enterprise API and integration solutions. This is a hands-on technical leadership role for an experienced engineer who thrives in fast-paced environments, can work independently, and is comfortable navigating ambiguity while driving technical initiatives to completion.
The ideal candidate has deep expertise in API architecture, event-driven systems, enterprise integration patterns, and modern authentication and security practices.
Key Responsibilities
• Lead the API and integration intake process, including solution design, prioritization, and implementation across multiple initiatives.
• Design, develop, and govern enterprise API standards using REST and event-driven architectures.
• Define and enforce API contracts, integration best practices, and governance frameworks.
• Design secure integration solutions, including tokenization and protection of sensitive data (PII/NPI) across environments.
• Build and support scalable synchronous and asynchronous integration patterns.
• Configure, manage, and optimize API gateway and integration/orchestration platforms.
• Design and support event streaming solutions using Kafka or AWS MSK.
• Contribute to workflow orchestration using Temporal or similar durable execution frameworks.
• Ensure API contracts align with enterprise data models and collaborate closely with data architecture teams.
• Provide hands-on technical leadership, mentor engineering teams, and remove implementation roadblocks.
• Drive architecture decisions while balancing scalability, security, performance, and maintainability.
Required Qualifications
• Extensive experience designing and implementing enterprise API and integration architectures.
• Strong expertise with RESTful APIs, OpenAPI, and event-driven integration patterns.
• Experience with API governance, lifecycle management, and contract design.
• Hands-on experience with API gateway platforms such as Gravitee, Apigee, Kong, AWS API Gateway, or similar.
• Experience with integration/iPaaS platforms such as Workato, MuleSoft, Boomi, or equivalent.
• Strong knowledge of OAuth 2.0, OpenID Connect (OIDC), and modern API security practices.
• Experience implementing event-driven architectures using Kafka, AWS MSK, or similar messaging platforms.
• Experience implementing tokenization or other data protection solutions for sensitive information.
• Strong understanding of microservices and distributed systems.
• Excellent problem-solving skills with the ability to work independently and lead technical initiatives.
Preferred Qualifications
• Experience with Gravitee and/or Workato.
• Experience with Temporal or similar workflow orchestration platforms.
• Familiarity with AsyncAPI specifications.
• Experience with canonical data models, enterprise data architecture, or Master Data Management (MDM).
• Exposure to AI agent orchestration frameworks such as LangGraph or similar technologies.
• Experience working within highly regulated industries such as financial services, insurance, or healthcare.
Desired Skills
• Enterprise API Architecture
• Integration Architecture
• Event-Driven Architecture
• Kafka / AWS MSK
• API Gateway Management
• REST APIs
• OAuth2 / OpenID Connect
• Microservices
• API Governance
• Integration Platforms (Workato, MuleSoft, Boomi, etc.)
• Data Security & Tokenization
• Strong communication and stakeholder management skills
If you are passionate about building scalable integration solutions and driving enterprise API strategy while remaining hands-on with implementation, we encourage you to apply.






