Biresh Biswas

Rust·Bitcoin/Lightning·LDK·gRPC/Protobuf·SQLite·AWS

• Re-architected Stable Channels monolithic Lightning serverinto two independently deployable Rust services: upstream LDK Server ↗ and a domain-specific ↗ control plane connected over gRPC.
• Owned the LSP control plane end to end, delivering 26 REST proxy APIs, resilient event consumption with reconnect/backfill recovery, autonomous stabilization, SQLite state hydration, and cross-platform push notifications.
• Designed a signed application protocol over Lightning custom TLVsfor trades, allocation sync, and device registration, enforcing node signatures, channel binding, replay protection, and splice-stable identities.
• Improved correctness and operability across the payment lifecyclewith idempotent reconciliation, compare-and-swap rollbacks, multi-feed price consensus, restart-safe recovery, and searchable audit trails, deployed and validated on AWS-hosted Bitcoin Signet.
• Upstreamed custom-TLV support to LDK Serveracross its Protobuf API, ldk-node conversions, CLI, and end-to-end tests, enabling external applications to exchange application-defined Lightning records.

DeFi · Multi-Chain · Agentic Systems · Python

• Architected and shipped defi-skills ↗ , a deterministic execution engine that converts natural-language intent into unsigned, auditable transactions for 53+ actions across 13 protocols and 6 EVM chains.
• Separated probabilistic intent extraction from deterministic transaction construction; designed a data-driven playbook architecture where new protocols require zero engine changes.
• Owned the product and platform surface, FastAPI service, agent integrations, web playground, pip distribution, authentication, rate limiting, structured errors, fork-replay benchmarks, CI, and deployment.
• Established the open-source contributor workflow and reviewed external changes, leading to 7 contributors, 200+ monthly PyPI downloads, and 20K+ launch reach within weeks.

Distributed Training · PyTorch · Deep Speed · Hugging Face PEFT

• Designed SplitLoRA, a distributed fine-tuning architecture that combines layer-wise model partitioning with LoRA adapter allocation across heterogeneous CPU, GPU, and multi-device topologies.
• Implemented Deep Speed/FSDP-based sharding for constrained devices and built benchmarks to quantify scalability, throughput, memory, and downstream-accuracy trade-offs.

Docker·Node. js·GCP·CLI Workflows

• Productionized a headless Prusa Slicer pipeline on GCP, reducing its Docker image from 10 GB to 1 GB through multi-stage builds and reproducible CLI workflows.
• Integrated slicing with backend pricing and G-code metadata extraction, taking the workflow from prototype to automated production service.

ASP. NET Core · SQL Server · Quest PDF · Azure AI

• Built Flow Docs, an enterprise documentation platform with Azure AI-assisted drafting, reducing manual authoring effort and review time.
• Designed a role-based approval workflow with semantic versioning and auditable document history on ASP. NET Core, EF Core, SQL Server, and Quest PDF.