June 2026: Delivered cross-board memory/partition standardization in sdk-nrf with a unified mapped-partition model, enabling SRAM partitioning, app RAM settings, and default settings storage. Implemented per-board devicetree overlays and test configurations to stabilize nRF91 test runs by explicitly mapping crypto partitions and memory regions and by disabling the Partition Manager where required. Resulted in easier maintenance, broader sample viability, and stronger cross-device consistency across Thingy:91x, TPM530M-based samples, and related SerComm targets.

May 2026 performance highlights: Implemented a cohesive, Devicetree-based partitioning strategy across Nordic nRF91 platforms and related repos, delivering consistent memory layouts, reduced runtime management overhead, and improved build reliability. Key work included: large-scale Disable Partition Manager across cellular samples to align with new Devicetree partition usage; introduction of common partition tables and DT-based partitions across samples and utilities; batch-wide integration of partitioning via Devicetree across wifi, net, crypto, and dect samples; enabling IPC-based modem interface with three dedicated partitions and DT-based modem IPC for app–modem communication; fixes to deprecated DT macros and an external flash partition designation; and enabling optional Partition Manager builds for PM-less environments. These changes collectively improve reliability, portability, and performance, enabling faster feature delivery and easier maintenance.

April 2026 monthly summary for sdk-nrf (nrfconnect): Key features delivered include PM-free builds and memory/config enhancements via Devicetree across devices. Notable work spans DTS-based partition layouts for Thingy boards and Sercomm TPM530MEVK, shared SRAM configuration for nRF91, device-tree overlays for AT client, and memory layout updates to support PM-less operation. MCUboot signing header sizing fixed in the TMF/MCUboot integration, ensuring proper header space when using TFM. Documentation updates add devicetree integration guidance for the modem library and explicit devicetree partition requirements for LwM2M Carrier. Overall impact: reduced dependency on Partition Manager, improved cross-device build consistency and memory usage, tightened security signing workflow, and clearer integration guidance, enabling faster onboarding and safer updates. Technologies/skills demonstrated: Device Tree, Partition Manager-less builds, MCUboot/TFM signing header sizing, LwM2M Carrier and AT client integration via devicetree, CMake/sysbuild adjustments, and documentation automation.

Month: 2026-01 — Delivered a key modem memory management enhancement enabling device-tree driven partitioning and dedicated modem tracing across nRF91/92. This work standardizes partition naming, improves debugging, and reduces maintenance overhead by decoupling from the partition manager.

December 2025: sdk-nrf location fetch optimization and associated stability improvements. Delivered a targeted fix to avoid LTE availability checks when cellular functionality is disabled, notably in DECT contexts, reducing unnecessary modem activity and improving resource usage during location retrieval. The change shipped with commit e51d8e89a030879effefcae707f99d1d223f51f9 (Signed-off by Lucas van der Ploeg). This work enhances performance in low-cell or disabled-cell environments and contributes to overall system efficiency, power savings, and responsiveness of location-dependent features.