Senior API Integration Engineer II — Azure & Python

Deloitte France; Morristown (NJ); On-site; USD 87,000 - 171,000; Full time

Job summary

Deloitte is seeking an Integration Engineer II to design and deliver API-driven integration solutions across on-premises and cloud environments. You will work with Python/JavaScript, Azure, and leading integration tools to enable seamless data exchange and scalable architectures.

The role emphasizes collaboration with cross-functional teams, adherence to SDLC practices, and mentoring junior developers while traveling up to 50% of the time in the US.

Qualifications

• Bachelor's degree in computer science, software engineering, information technology or a related field.
• 4+ years of hands-on experience with one or more modern programming languages (e.g., Python, JavaScript/TypeScript) for building backend services and APIs
• Proven experience designing and implementing integration solutions connecting disparate systems, applications, and data sources across on-premises and cloud environments
• Strong understanding of integration patterns and architectural styles (e.g., point-to-point, hub-and-spoke, event-driven, pub/sub, ESB, iPaaS)
• Hands-on experience with API design and development, including RESTful services, SOAP, and/or GraphQL
• Working knowledge of API security standards and protocols (OAuth2, JWT, SAML, API keys) and best practices for versioning, throttling, and error handling
• Experience with enterprise integration platforms/tools (e.g., MuleSoft, Apigee, Kong, Workato, BizTalk, Boomi, or equivalent)
• Experience with at least one major cloud platform (Azure, AWS, or GCP)
• Solid understanding of data mapping, transformation, and orchestration techniques across heterogeneous systems
• Experience managing the full software development lifecycle (SDLC), including CI/CD pipelines, testing strategies, and deployment across multiple environments (Dev, Test, UAT, Production)
• Strong analytical and troubleshooting skills, with the ability to diagnose and resolve complex integration and performance issues
• Excellent communication skills, with the ability to translate business requirements into technical solutions and explain them to both technical and non-technical stakeholders
• Demonstrated ability to create clear technical documentation, including architecture diagrams, specifications, and data mapping references
• Experience leading or mentoring junior developers, with a collaborative approach to working across cross-functional teams
• Strong project ownership mindset, with the ability to manage priorities, timelines, and stakeholder expectations independently
• Ability to travel up to 50% of the time, based on the work you do and the clients and industries/sectors you serve.
• Must be legally authorized to work in the United States without the need for employer sponsorship, now or at any time in the future.

Responsibilities

• Design end-to-end system architecture spanning frontend, backend, integration layers, and cloud infrastructure, translating requirements into scalable Azure-based solutions
• Define technical standards, Integration design patterns, and best practices to guide the development team
• Create and maintain architecture diagrams, technical specifications, and design documents, including data mapping and configuration details
• Build backend services and APIs using Python (e.g., FastAPI, Django, Flask), Javascript, Azure, Typescript or using enterprise integration tools like MuleSoft , Apigee, Kong, Workato, BizTalk. MUST have recent, hands-on experience with at least two of these tools.
• Design, build, and integrate RESTful APIs - connecting third-party and internal systems for reliable, consistent data exchange
• Implement API security (OAuth2, JWT, API keys), versioning, rate limiting, and robust error handling
• Manage the full software development lifecycle (SDLC), including developing, testing, and deploying integration processes across Test, UAT, and Production environments
• Monitor integration performance, proactively troubleshoot issues, and provide expert-level post-deployment support
• Collaborate with cross-functional teams to optimize data flows and ensure adherence to integration best practices
• Take ownership of assigned projects, manage stakeholder expectations, and mentor junior team members toward successful delivery

Skills

Independent work

Communication skills

Attention to detail

Team collaboration

Deadline-driven

Mentoring juniors

Project ownership

Education

Bachelor's degree in computer science, software engineering, information technology or related field

Tools

MuleSoft

Apigee

Kong

Workato

BizTalk

Boomi

Job description

Deloitte is seeking an Integration Engineer II to design and deliver API-driven integration solutions across on-premises and cloud environments. You will work with Python/JavaScript, Azure, and leading integration tools to enable seamless data exchange and scalable architectures.

The role emphasizes collaboration with cross-functional teams, adherence to SDLC practices, and mentoring junior developers while traveling up to 50% of the time in the US.