calimero-network/core
Oct 2024 – May 2026
12 Months active
Languages Used
BashJavaScriptRustTypeScriptYAMLPythonMarkdownShell
Technical Skills
API designCI/CDCLI DevelopmentCommand-line Argument ParsingData StructuresGitHub Actions
Sandi Fatic
PROFILE
Sandi Fatic
Over two years, contributed to calimero-network/core by building distributed backend systems with a focus on secure governance, collaborative data, and developer tooling. Delivered features such as CRDT-based real-time collaboration, modular API and CLI clients, and secure onboarding flows, using Rust, TypeScript, and Python. Enhanced reliability through robust CI/CD pipelines, automated license compliance, and observability tooling. Implemented advanced synchronization protocols, cryptographic authentication, and KMS-backed attestation for secure key management. Refactored architecture for modularity and maintainability, integrating event-driven and peer-to-peer networking. Prioritized code quality with comprehensive testing, documentation, and release automation, enabling scalable deployments and safer, more predictable development cycles.
Overall Statistics
Feature vs Bugs
66%Features
Repository Contributions
190Total
Bugs
40
Commits
190
Features
78
Lines of code
182,373
Activity Months12
Your Network
14 peopleWork History
May 2026
16 Commits • 5 Features
May 1, 20262026-05 monthly summary for calimero-network/core. Focused on governance reliability, observability, CRDT safety, network synchronization, and release stability. Delivered key features, fixed critical governance and membership bugs, and strengthened monitoring and developer tooling. Result: safer ownership transfer, clearer membership status, faster diagnostics, and smoother release cadence across the month.
16 Commits • 5 Features
May 1, 20262026-05 monthly summary for calimero-network/core. Focused on governance reliability, observability, CRDT safety, network synchronization, and release stability. Delivered key features, fixed critical governance and membership bugs, and strengthened monitoring and developer tooling. Result: safer ownership transfer, clearer membership status, faster diagnostics, and smoother release cadence across the month.
May 2026
April 2026
1 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary for calimero-network/core: Delivered a new Fleet Joining API Endpoint with validation, attestation generation, and group subscription logic to support automated and secure fleet onboarding. This feature establishes a scalable onboarding flow and governance model for fleet management within the core service. No major bugs reported this month; focus was on feature delivery and code quality in the core repository.
April 2026
1 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary for calimero-network/core: Delivered a new Fleet Joining API Endpoint with validation, attestation generation, and group subscription logic to support automated and secure fleet onboarding. This feature establishes a scalable onboarding flow and governance model for fleet management within the core service. No major bugs reported this month; focus was on feature delivery and code quality in the core repository.
March 2026
8 Commits • 3 Features
Mar 1, 2026Concise monthly summary for 2026-03 focusing on security features, deployment controls, and architecture simplifications in calimero-network/core. Delivered KMS security enhancements with a challenge-response protocol, digital signatures, attestation verification, and policy retrieval to verify KMS before key fetches; production-mode stricter allowlists for TCB/MRTD/RTMR values. Added KMS attestation deployment controls introducing self-attestation preflight checks and a release isolation model to prevent inter-version interference (subsequently reverted in merod). Implemented TEE governance with admission policy governance and attestation-based auto-admission, and removed the blockchain dependency for context management by embedding governance into the node via signed gossip operations. Also moved KMS to a separate repository as part of architectural reorganization.
8 Commits • 3 Features
Mar 1, 2026Concise monthly summary for 2026-03 focusing on security features, deployment controls, and architecture simplifications in calimero-network/core. Delivered KMS security enhancements with a challenge-response protocol, digital signatures, attestation verification, and policy retrieval to verify KMS before key fetches; production-mode stricter allowlists for TCB/MRTD/RTMR values. Added KMS attestation deployment controls introducing self-attestation preflight checks and a release isolation model to prevent inter-version interference (subsequently reverted in merod). Implemented TEE governance with admission policy governance and attestation-based auto-admission, and removed the blockchain dependency for context management by embedding governance into the node via signed gossip operations. Also moved KMS to a separate repository as part of architectural reorganization.
March 2026
February 2026
60 Commits • 24 Features
Feb 1, 2026February 2026 (Month: 2026-02) focused on stabilizing core development velocity, security hardening, and AI contributor workflows in calimero-network/core. Delivered new contributor guidance for AI workflows and documented cursor rules, upgraded build/CI reliability, and centralized quality improvements. Addressed critical bugs affecting contract transfers, WASM safety, and input validation. These efforts increased release velocity, reliability, and security, enabling safer AI-assisted contributions and more predictable deployments across the platform.
February 2026
60 Commits • 24 Features
Feb 1, 2026February 2026 (Month: 2026-02) focused on stabilizing core development velocity, security hardening, and AI contributor workflows in calimero-network/core. Delivered new contributor guidance for AI workflows and documented cursor rules, upgraded build/CI reliability, and centralized quality improvements. Addressed critical bugs affecting contract transfers, WASM safety, and input validation. These efforts increased release velocity, reliability, and security, enabling safer AI-assisted contributions and more predictable deployments across the platform.
November 2025
18 Commits • 7 Features
Nov 1, 2025November 2025 achieved meaningful improvements across ABI tooling, CRDT capabilities, data synchronization/visualization, late-join security, and JS bindings with persistent runtime state. The month also delivered CI/release workflow enhancements and state-schema tooling to drive governance and automation.
18 Commits • 7 Features
Nov 1, 2025November 2025 achieved meaningful improvements across ABI tooling, CRDT capabilities, data synchronization/visualization, late-join security, and JS bindings with persistent runtime state. The month also delivered CI/release workflow enhancements and state-schema tooling to drive governance and automation.
November 2025
October 2025
35 Commits • 18 Features
Oct 1, 2025Month: 2025-10 — Summary: In October, the team delivered real-time and collaborative data capabilities with a focus on reliability, performance, and ease of use. Key features include SSE-based context subscriptions with improved UX, cross-context communication (xcall) with WebSocket keepalive for higher reliability, and a comprehensive DAG-based CRDT synchronization framework with extensive end-to-end tests, including nested CRDT support. Storage layer enhancements added an RGA-based collaboration model and introduced Hybrid Logical Clock for causal ordering, plus RocksDB block cache tuning to boost read/write throughput. The release process was streamlined with RC updates and dependency upgrades, and documentation was cleaned up to reduce onboarding friction. Several high-impact bugs were fixed, including wasm-abi/storage warnings, non-WebSocket GET handling, publishing behavior for state transitions, and DAG root hash handling, contributing to a more stable platform and faster time-to-value for clients.
October 2025
35 Commits • 18 Features
Oct 1, 2025Month: 2025-10 — Summary: In October, the team delivered real-time and collaborative data capabilities with a focus on reliability, performance, and ease of use. Key features include SSE-based context subscriptions with improved UX, cross-context communication (xcall) with WebSocket keepalive for higher reliability, and a comprehensive DAG-based CRDT synchronization framework with extensive end-to-end tests, including nested CRDT support. Storage layer enhancements added an RGA-based collaboration model and introduced Hybrid Logical Clock for causal ordering, plus RocksDB block cache tuning to boost read/write throughput. The release process was streamlined with RC updates and dependency upgrades, and documentation was cleaned up to reduce onboarding friction. Several high-impact bugs were fixed, including wasm-abi/storage warnings, non-WebSocket GET handling, publishing behavior for state transitions, and DAG root hash handling, contributing to a more stable platform and faster time-to-value for clients.
September 2025
20 Commits • 7 Features
Sep 1, 2025September 2025 focused on architectural modernization, security, observability, and release reliability for calimero-network/core. Key outcomes include modularizing the blockchain context and multi-protocol client architecture, enhanced observability with non-truncating request/response logging, removal of Stellar integration to reduce dependencies, introduction of a private storage mechanism for secure secrets, and hardened CI/CD and release processes to accelerate safe deployments and semantic versioning.
20 Commits • 7 Features
Sep 1, 2025September 2025 focused on architectural modernization, security, observability, and release reliability for calimero-network/core. Key outcomes include modularizing the blockchain context and multi-protocol client architecture, enhanced observability with non-truncating request/response logging, removal of Stellar integration to reduce dependencies, introduction of a private storage mechanism for secure secrets, and hardened CI/CD and release processes to accelerate safe deployments and semantic versioning.
September 2025
August 2025
15 Commits • 3 Features
Aug 1, 2025August 2025 — Major modernization of the Meroctl CLI and the client architecture, strengthened API security, and expanded multi-language SDK support, while tightening CI/license hygiene and cleaning local development tooling. The work focused on a modular CLI with a localhost fallback, a dedicated client crate to improve maintainability and extensibility, secure API access via NEAR_API_KEY, and Python bindings with release automation. These changes reduce maintenance overhead, accelerate releases, and improve security and compliance, laying groundwork for scalable feature delivery and safer operations.
August 2025
15 Commits • 3 Features
Aug 1, 2025August 2025 — Major modernization of the Meroctl CLI and the client architecture, strengthened API security, and expanded multi-language SDK support, while tightening CI/license hygiene and cleaning local development tooling. The work focused on a modular CLI with a localhost fallback, a dedicated client crate to improve maintainability and extensibility, secure API access via NEAR_API_KEY, and Python bindings with release automation. These changes reduce maintenance overhead, accelerate releases, and improve security and compliance, laying groundwork for scalable feature delivery and safer operations.
April 2025
4 Commits • 3 Features
Apr 1, 2025Concise monthly summary for 2025-04 (calimero-network/core): The month focused on boosting developer velocity, stabilizing local testing workflows, and strengthening governance. Delivered local development network tooling, updated default contract version behavior, and introduced automated license/dependency compliance checks. These changes reduce setup time, ensure newer contracts by default, and improve security and legal compliance across the repo. Major bugs fixed: None documented in this period.
4 Commits • 3 Features
Apr 1, 2025Concise monthly summary for 2025-04 (calimero-network/core): The month focused on boosting developer velocity, stabilizing local testing workflows, and strengthening governance. Delivered local development network tooling, updated default contract version behavior, and introduced automated license/dependency compliance checks. These changes reduce setup time, ensure newer contracts by default, and improve security and legal compliance across the repo. Major bugs fixed: None documented in this period.
April 2025
March 2025
2 Commits
Mar 1, 2025March 2025 monthly summary for calimero-network/core. Focused on improving onboarding accessibility through documentation correction and ensuring accurate community links. No new feature work this month; a targeted bug fix corrected the Discord invite link in README.mdx and aligns with contributor guidance.
March 2025
2 Commits
Mar 1, 2025March 2025 monthly summary for calimero-network/core. Focused on improving onboarding accessibility through documentation correction and ensuring accurate community links. No new feature work this month; a targeted bug fix corrected the Discord invite link in README.mdx and aligns with contributor guidance.
November 2024
4 Commits • 4 Features
Nov 1, 2024Performance summary for 2024-11: - Delivered four key features across calimero-network/core, focusing on CI reliability, data modeling, new app functionality, and security improvements. - Business value realized: reduced CI build failures due to lint warnings, enhanced data modeling and test coverage with new storage collections, a new analytics-oriented app (visited), and strengthened secure peer communication via crypto integration. - Overall impact: more predictable release cycles, better code quality, and a secure foundation for future growth and distributed features. - Technologies and skills demonstrated: Rust, cargo/clippy workflow optimization, unit/integration testing, design of storage abstractions (Vector, UnorderedMap, UnorderedSet), nested map/set data modeling, crate modularization (calimero-crypto), and encryption integration.
4 Commits • 4 Features
Nov 1, 2024Performance summary for 2024-11: - Delivered four key features across calimero-network/core, focusing on CI reliability, data modeling, new app functionality, and security improvements. - Business value realized: reduced CI build failures due to lint warnings, enhanced data modeling and test coverage with new storage collections, a new analytics-oriented app (visited), and strengthened secure peer communication via crypto integration. - Overall impact: more predictable release cycles, better code quality, and a secure foundation for future growth and distributed features. - Technologies and skills demonstrated: Rust, cargo/clippy workflow optimization, unit/integration testing, design of storage abstractions (Vector, UnorderedMap, UnorderedSet), nested map/set data modeling, crate modularization (calimero-crypto), and encryption integration.
November 2024
October 2024
7 Commits • 3 Features
Oct 1, 2024October 2024 focused on simplifying the JSON-RPC surface, strengthening storage identity and root handling, and enhancing developer tooling, while maintaining CI stability. Delivered a streamlined API, a robust 32-byte ID and context-based root system, and improved CLI UX, enabling faster feature delivery and safer operations. These changes reduce maintenance overhead, improve storage reliability, and enhance the end-user experience through clearer commands and better transaction visibility.
October 2024
7 Commits • 3 Features
Oct 1, 2024October 2024 focused on simplifying the JSON-RPC surface, strengthening storage identity and root handling, and enhancing developer tooling, while maintaining CI stability. Delivered a streamlined API, a robust 32-byte ID and context-based root system, and improved CLI UX, enabling faster feature delivery and safer operations. These changes reduce maintenance overhead, improve storage reliability, and enhance the end-user experience through clearer commands and better transaction visibility.
Activity
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Quality Metrics
Correctness93.6%
Maintainability88.0%
Architecture91.2%
Performance86.0%
AI Usage26.8%
Skills & Technologies
Programming Languages
BashCSSHTMLJSONJavaScriptMarkdownPythonRustShellTOML
Technical Skills
ABI designAI IntegrationAPI Client DevelopmentAPI DesignAPI DevelopmentAPI IntegrationAPI designAPI developmentAuthenticationAutomationAxumBackend DevelopmentBlockchain IntegrationBuild AutomationBuild Optimization
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline