I Architect & build scalable system infrastructure in Java, Python, Rust, TS, Devops, Security for regulated industries worldwide β cybersecurity, databases, and local-first AI.
- Integration & systems architecture β designing how services, data, and legacy systems actually talk to each other; API gateways, event-driven pipelines, ESB modernization, polyglot interop (Java β Rust β Python)
- Platform engineering & SRE & DEVOPS β multi-language build systems, cross-compilation, observability across language boundaries
- Cybersecurity β attack surface management, runtime security, air-gapped deployments, threat modeling (STRIDE, PASTA), vulnerability research, penetration testing, red team / blue team exercises, digital forensics & incident response, malware analysis, memory forensics, log & network forensics, chain-of-custody evidence handling, SIEM / SOAR integration, threat intelligence, secure SDLC
- Architecture for regulated environments β GDPR, NIS2, MiCA, HIPAA, SOC 2, ISO 27001 as design constraints, not afterthoughts
- Integration & systems architecture β designing how services, data, and legacy systems actually talk to each other; API gateways, event-driven pipelines, ESB modernization, polyglot interop (Java β Rust β Python)
- Architecture styles β microservices, event-driven, hexagonal / ports & adapters, CQRS + event sourcing, serverless, service mesh, modular monoliths, data mesh
- Design patterns β DDD (domain-driven design), Saga, Circuit Breaker, Bulkhead, Strangler Fig, Outbox, API Gateway, BFF (backend-for-frontend), Anti-Corruption Layer
- Systems engineering β capacity planning, SLO/SLI/error budgets, chaos engineering, disaster recovery, high-availability topologies, zero-downtime migrations, performance engineering
- Blockchain β low-level protocol tooling, codecs, RPC clients, indexers, and cross-chain interop in Rust. Building primitives for developers, not chasing consumer dApps β the plumbing layer for Bitcoin, Ethereum, Solana, Cosmos, and other chain families.
| Project | What it is | Stack |
|---|---|---|
| ChainFoundry | Open-source Rust blockchain infrastructure monorepo β chaincodec, chainrpc, chainindex, chainerrors. Bindings for TS, Python, Go, Java, WASM. 7 blockchain families. |
Rust, WASM |
| MultiMindSDK | LLM-agnostic multi-agent orchestration SDK. Apache 2.0, published on PyPI. Open-core with premium vertical agent packs (Legal, Healthcare, Finance). | Python |
| CyberXDefend | Cross-platform cybersecurity & attack surface management & threat intelligence & forensic investigation platform.self-hosted web platform. | Tauri, Rust, React, FastAPI |
| TwinMind | Local-first, air-gapped AI knowledge base for regulated industries β law, healthcare, finance, government. | Rust, Python, React |
| DBABridge | Hybrid Java + Rust database migration tool. ANTLR4 parsing for Oracle/SQL Server/DB2, Rust for NoSQL and vector DBs. | Java, Rust, GraalVM |
Languages: Rust Β· Java Β· Python Β· TypeScript Β· Domains: Cybersecurity Β· Integration & systems architecture Β· Platform engineering Β· Database systems Β· LLM systems Β· Blockchain Architecture: Event-driven systems Β· API gateways Β· Polyglot interop Β· Legacy modernization Β· Distributed systems Compliance: GDPR Β· NIS2 Β· MiCA Β· HIPAA Β· SOC 2 Β· ISO 27001 Blockchain: Rust protocol tooling Β· Codecs & serialization Β· RPC clients Β· Chain indexers Β· Cross-chain interop Β· 7 chain families (Bitcoin, Ethereum, Solana, Cosmos, and more) Β· Bindings for TS, Python, Go, Java, WASM
- π¦ X / Twitter: @darshan_aqua
- πΌ LinkedIn: Darshan Kumar
- π Websites: chainfoundry.dev Β· cyberxdefend.com Β· multimind.dev
Open to conversations around AI, cybersecurity, integration architecture, Rust + database internals, and local-first AI.