10/15/2026 updated
TM
100 % available
Integration Architect | Integration Lead
Poznań, Poland
Only remote
Secondary School DiplomaApplication Programming Interfaces (APIs)Data IntegrationMessaging Application Programming InterfaceSystems IntegrationTechnology IntegrationBackendComarchGraphQLApi Design
Integration Technologies
Expertise in REST, SOAP, GraphQL, EDI/EDIFACT, SFTP, and API gateways, with hands-on experience designing and implementing 10+ integrations across ERP, e-commerce, and insurance platforms.
Interface Design & Documentation
Preparation of interface specifications, field mappings, transformation rules, error scenarios, process flows, and acceptance criteria for teams of 20+ developers and testers.
Workflow Automation
Automation of order processing, invoicing, and supplier document workflows using Camunda, Node-RED, and Comarch Altum BPM, significantly reducing manual data entry.
Development & Data
Programming and data management using C#, Node.js, Java, SQL, Microsoft SQL Server, MySQL, and MariaDB for building REST APIs and backend integrations.
Data Pipelines & Reporting
Implementation of change data capture solutions using Debezium and Redpanda, streaming transformations with Materialize and ksqlDB, and reporting through Metabase and Power BI.
ERP Integration
Design, build, and maintenance of Comarch Altum ERP integrations covering orders, invoices, product data, price lists, service workflows, and device enrollment.
Technical Delivery
Facilitation of requirements workshops, solution design, technical documentation, UAT support, and production troubleshooting across complex integration projects.
Server Administration & IT Services
Administration of Linux and Windows servers, local network infrastructure, and deployment of approximately 30 Linux-based multiplayer game servers.
Expertise in REST, SOAP, GraphQL, EDI/EDIFACT, SFTP, and API gateways, with hands-on experience designing and implementing 10+ integrations across ERP, e-commerce, and insurance platforms.
Interface Design & Documentation
Preparation of interface specifications, field mappings, transformation rules, error scenarios, process flows, and acceptance criteria for teams of 20+ developers and testers.
Workflow Automation
Automation of order processing, invoicing, and supplier document workflows using Camunda, Node-RED, and Comarch Altum BPM, significantly reducing manual data entry.
Development & Data
Programming and data management using C#, Node.js, Java, SQL, Microsoft SQL Server, MySQL, and MariaDB for building REST APIs and backend integrations.
Data Pipelines & Reporting
Implementation of change data capture solutions using Debezium and Redpanda, streaming transformations with Materialize and ksqlDB, and reporting through Metabase and Power BI.
ERP Integration
Design, build, and maintenance of Comarch Altum ERP integrations covering orders, invoices, product data, price lists, service workflows, and device enrollment.
Technical Delivery
Facilitation of requirements workshops, solution design, technical documentation, UAT support, and production troubleshooting across complex integration projects.
Server Administration & IT Services
Administration of Linux and Windows servers, local network infrastructure, and deployment of approximately 30 Linux-based multiplayer game servers.
Experience
Professional experience10+ years
Freelancer since2026
Languages
EnglishFluentPolishNative speaker
Project history
Insurance software for the Danish market. Clarified integration requirements with business and technical teams during workshops. Worked on 12 integrations, defining requirements and interface designs for new integrations and maintaining existing ones. Prepared and maintained field mappings, transformation rules, error scenarios, process flows, and acceptance criteria for 20+ developers and testers. Supported implementation, user acceptance testing, and resolution of issues after go-live.
Apple Authorized Reseller and Service Provider with ERP environment for up to 200 users. Designed, built, and maintained 10+ Comarch Altum ERP integrations covering orders, invoices, product data, price lists, service workflows, and device enrollment. Built REST and GraphQL services connecting ERP with e-commerce platforms, Apple DEP, Apple GSX, Adobe VIP MP, FileMaker, and internal systems. Automated order processing, invoicing, and supplier document workflows using Camunda, Node-RED, C#, Node.js, and Altum BPM. Maintained production services including Hasura, Zammad, Redpanda, Debezium, Metabase, and Keycloak.
Provided business IT support and administered Linux, Windows, and local network infrastructure. Coordinated diagnostics and technician work in automotive service operations. Deployed and maintained approximately 30 Linux-based multiplayer game servers.