Enterprise Integration Engineer (all genders)

You connect business systems so that processes do not fail at interface boundaries. APIs, files, messages and existing data models must work together. You make data flows transparent and account for the different responsibilities of the systems involved.

One system reports changes through an API, another processes messages and a third imports files. You clarify identifiers, states and ordering. Retries must not create duplicate transactions. Incomplete data needs error paths and controlled restarts. Together with system owners, you define authoritative sources and procedures for identifying and correcting discrepancies.

• Analyse interfaces to enterprise applications and implement integrations with clear data contracts.
• Develop transformations, validation and error handling and safely manage repeated processing and duplicates.
• Implement authentication, permissions and logging for cross-system data flows.
• Test end-to-end behaviour, document integrations and conduct operational handovers with the responsible teams.
• Implement data contracts, mapping and idempotency for cross-system transactions.
• Test dead-letter queues, restarts and business data reconciliation together.

What matters is demonstrable experience that is relevant to the role. It may come from appropriate vocational training, a degree, professional practice or a well-founded career change. We will align the specific level of responsibility with your knowledge and experience.

• Experience with software or system integration, APIs and data formats.
• Understanding of business processes, data models and reliably repeatable processing.
• Ability to isolate errors across multiple systems and document them clearly.

This knowledge is helpful, but you do not need to have all of it at once. In your application, describe where you have already gained practical experience and which areas you would like to explore in greater depth.

• Experience with messaging, integration platforms or ERP/CRM interfaces.
• Knowledge of legacy integration, event architectures or API governance.

You deliver integrations with transparent data lineage, error states and responsibilities. A successful data transfer is only part of the outcome; reconciliation and error correction must also work.

This role can be based in Cologne or performed remotely. We will agree the specific form of collaboration, project requirements and any necessary customer appointments before you start.

This role is offered as permanent employment on a full-time or part-time basis. We will agree the responsibilities, working hours, start date and compensation to suit the role and your level of experience.

Show us in your application which experience or interests you bring to this role. A CV and relevant project examples, certificates or work samples will help us assess your professional background. Please do not send confidential customer data, credentials or protected source code.

Tell us your preferred working model, your possible start date and whether you would like to work full-time or part-time.

If you have questions about the role, contact our recruitment team at hr@otoko.com. Inclusion in the applicant pool is voluntary and takes place only with separate consent; it is not a prerequisite for reviewing your application.