
Joakim Schurer contributed to Sundsvallskommun’s api-service-messaging and related repositories by building and enhancing backend features focused on reliability, data integrity, and traceability. He developed batch history APIs with per-user access and robust filtering, improved error handling in invoice processing, and implemented batch ID propagation for comprehensive message auditing. Using Java, Spring Boot, and SQL, Joakim refactored code for maintainability, expanded integration and unit test coverage, and addressed issues such as case-sensitivity in APIs and redundant data in delivery history. His work demonstrated depth in backend development, emphasizing clean architecture, thorough validation, and alignment with business requirements for observability.

Month: 2025-09 — Sundsvallskommun/api-service-messaging: Delivered batch ID propagation across all message types and history, updated handling/mapping services, and added integration tests to validate presence and format of the batch ID. Fixed a SonarQube issue by removing a duplicate test, reducing maintenance noise. This work enhances traceability, auditing, and test coverage while aligning with quality gates.
Month: 2025-09 — Sundsvallskommun/api-service-messaging: Delivered batch ID propagation across all message types and history, updated handling/mapping services, and added integration tests to validate presence and format of the batch ID. Fixed a SonarQube issue by removing a duplicate test, reducing maintenance noise. This work enhances traceability, auditing, and test coverage while aligning with quality gates.
July 2025: Key outcomes across two services: - api-service-email-reader: Email Deletion Safeguard for No-Reply Senders — prevents deleting emails from no-reply addresses; shifts responsibility to the support-management workflow; logs deletions for traceability. Commit 624f29520c7c27e4b4d6d9acf5e10dcc0a2ee844 (UF-16673). Business value: reduces risk of data loss and improves accountability. - api-service-invoice-sender: XML Data Cleaning — Trim Whitespace in XmlUtil — reinstates trim for XML node text content to standardize getTextContent output and improve reliability of data extraction. Commit 356de2e7bf246cbf2f6d8317327d52d913b9bd52 (HYDRAN-115). Business value: more reliable data for downstream invoicing. Impact: improved data integrity, traceability, and reliability; reduced risk of misprocessed invoices. Technologies/skills: XML processing, logging/tracing, utility maintenance, commit-based change management, cross-service collaboration.
July 2025: Key outcomes across two services: - api-service-email-reader: Email Deletion Safeguard for No-Reply Senders — prevents deleting emails from no-reply addresses; shifts responsibility to the support-management workflow; logs deletions for traceability. Commit 624f29520c7c27e4b4d6d9acf5e10dcc0a2ee844 (UF-16673). Business value: reduces risk of data loss and improves accountability. - api-service-invoice-sender: XML Data Cleaning — Trim Whitespace in XmlUtil — reinstates trim for XML node text content to standardize getTextContent output and improve reliability of data extraction. Commit 356de2e7bf246cbf2f6d8317327d52d913b9bd52 (HYDRAN-115). Business value: more reliable data for downstream invoicing. Impact: improved data integrity, traceability, and reliability; reduced risk of misprocessed invoices. Technologies/skills: XML processing, logging/tracing, utility maintenance, commit-based change management, cross-service collaboration.
June 2025: Delivered batch history API enhancements, strengthened delivery history data integrity, and consolidated internal batch resource testing. Enabled per-user batch history access, robust batch filtering with pagination validation, and aligned OpenAPI/spec/docs, while expanding test coverage for batch resources and maintaining data accuracy across message delivery history.
June 2025: Delivered batch history API enhancements, strengthened delivery history data integrity, and consolidated internal batch resource testing. Enabled per-user batch history access, robust batch filtering with pagination validation, and aligned OpenAPI/spec/docs, while expanding test coverage for batch resources and maintaining data accuracy across message delivery history.
May 2025: Reliability, observability, and test stability improvements across two services. Key features delivered include enhancements to invoice processing reliability and reporting, improved statistics data access performance, and strengthened test reliability for messaging and SMS workflows. The work delivered aligns with business goals of reducing processing failures, improving stakeholder visibility, and enabling faster analytics feedback.
May 2025: Reliability, observability, and test stability improvements across two services. Key features delivered include enhancements to invoice processing reliability and reporting, improved statistics data access performance, and strengthened test reliability for messaging and SMS workflows. The work delivered aligns with business goals of reducing processing failures, improving stakeholder visibility, and enabling faster analytics feedback.
April 2025 (2025-04) – Sundsvallskommun/api-service-messaging: Focused on reliability and interoperability of the messaging API. Delivered two high-impact bug fixes that align with the oep integrator service and ensure correct request formatting. Impact: reduced case-sensitivity related messaging errors and ensured Feign client sends proper JSON payloads; tests updated to prevent regressions.
April 2025 (2025-04) – Sundsvallskommun/api-service-messaging: Focused on reliability and interoperability of the messaging API. Delivered two high-impact bug fixes that align with the oep integrator service and ensure correct request formatting. Impact: reduced case-sensitivity related messaging errors and ensured Feign client sends proper JSON payloads; tests updated to prevent regressions.
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