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The API Engineering Consultant is a key member of the Implementation & Consulting Department, responsible for enabling seamless connectivity between ADP solutions and client enterprise systems. The role helps organizations maximize the value of their HCM, HR, payroll, and workforce management investments by designing, developing, and supporting secure, scalable, and reliable API-based integrations.
Key responsibilities:
API Engineering
- Development and implementation of REST-based APIs and integration services
- Creation and processing of JSON data structures
- Implementation of authentication and security mechanisms such as OAuth 2.0, API keys, and token-based authentication
- Use of webhooks and event-driven integration scenarios
- Design and implementation of error handling, monitoring, and logging
- Ensuring performance, stability, and security of integration solutions
Data Management and Integration
- Creation and maintenance of data models and data mappings
- Execution of data validations and quality assurance measures
- Creation and optimization of SQL queries
- Analysis and documentation of data flows and interface requirements
Knowledge Development and Internal Consulting
- Supporting the development of internal API and integration expertise
- Creating standards, templates, and best practices
- Coaching and mentoring team members
- Conducting internal training sessions and knowledge transfer workshops
- Contributing to the advancement of integration methods and technical standards
Professional skills/experience requirements:
API and Integration Technologies
- In-depth knowledge of REST APIs and API architectures
- Experience with JSON and web-based interfaces
- Strong knowledge of authentication methods:
- OAuth 2.0
- API Keys
- Access Tokens
- Understanding of HTTP protocols and methods (GET, POST, PUT, DELETE)
- Experience with webhooks and event-driven integration processes
- Expertise in error analysis and API troubleshooting
Programming
Experience with one of the following technology stacks:
JavaScript Ecosystem
- JavaScript
- REST frameworks
- Development of integration solutions
or
Python Ecosystem
- Python
- FastAPI
- API development and automation
Databases
- Strong SQL skills
- Data modeling and table structures
- Data and interface mapping
- Data validation and data quality assurance
- Logging and error analysis
Integration and Testing Tools
- Postman
- Bruno
- API testing and error analysis
Cloud and Infrastructure
- Basic understanding of hosting concepts
- Knowledge of SSL certificates
- Networking fundamentals
- Firewall and connectivity concepts
- Cloud infrastructures and modern deployment concepts
Further desired Qualifications
- Experience with HCM, HR, or payroll integrations
- Experience with SaaS solutions and cloud applications
- Knowledge of Microsoft Azure, AWS, or Google Cloud
- Basic knowledge of DevOps and CI/CD processes
- Experience in consulting, professional services, or implementation projects
Personal skills/competencies
- Very good mastery of German and English languages, both orally and written, at minimum B2+
- Excellent communication skills at both technical and business levels
- Strong analytical and problem-solving skills
- Client and service-oriented mindset
- Team-oriented and collaborative working style
- Ability to work independently in a structured manner
- Strong willingness to learn and interest in new technologies
A little about ADP: We are a comprehensive global provider of cloud-based human capital management (HCM) solutions that unite HR, payroll, talent, time, tax and benefits administration and a leader in business outsourcing services, analytics, and compliance expertise. We believe our people make all the difference in cultivating a down-to-earth culture that embraces our core values, welcomes ideas, encourages innovation, and values belonging. We've received recognition for our work by many esteemed organizations, learn more at ADP Awards and Recognition.
Diversity, Equity, Inclusion & Equal Employment Opportunity at ADP: ADP is committed to an inclusive, diverse and equitable workplace, and is further committed to providing equal employment opportunities regardless of any protected characteristic including: race, color, genetic information, creed, national origin, religion, sex, affectional or sexual orientation, gender identity or expression, lawful alien status, ancestry, age, marital status, protected veteran status or disability. Hiring decisions are based upon ADP’s operating needs, and applicant merit including, but not limited to, qualifications, experience, ability, availability, cooperation, and job performance.
Ethics at ADP: ADP has a long, proud history of conducting business with the highest ethical standards and full compliance with all applicable laws. We also expect our people to uphold our values with the highest level of integrity and behave in a manner that fosters an honest and respectful workplace. Click https://jobs.adp.com/life-at-adp/ to learn more about ADP’s culture and our full set of values.
