Subid
das.

Forward Deployed Engineer bridging cloud infrastructure, enterprise AI and high-performance software.

Kolkata, IN — operating globally · Engineer at Connect In Cloud

Pencil-sketch portrait of Subid Das
Production uptime across client deployments
99.999%
Manual audit labor eliminated for IOCL
90%
Average turnaround from concept to production launch
2-4 Wks
Client IP ownership with zero vendor lock-in
100%

(01)The story

Systems programming, cloud infrastructure and full-stack delivery — embedded directly with client teams to cut friction and ship production code.

At Connect In Cloud, I run 5+ production environments: container orchestration, automated deployments, resilient edge routing. In parallel I've shipped ridenoww.com (UK mobility, web + native) and deedpollservices.co.uk (UK legal SaaS with PDF automation and Stripe billing).

For Indian Oil (IOCL) I built an AI document-audit platform — schema-guided LLM extraction, Pinecone search, RabbitMQ queues — processing 5,000+ contracts a month and cutting manual review by 90%.

With M.it Services GmbH (Germany) I rebuilt a Rust/Tauri application core, moved it to official Windows bindings, and shipped concurrency-safe media capture across iOS and Android.

(02)Core disciplines

  • Cloud-Native & Kubernetes Infrastructure

    Architecting high-availability production environments with robust SLAs. Expertise in container orchestration, ingress routing, GitOps workflows, automated zero-downtime rollouts, and persistent storage management across Linux and multi-cloud providers.

    Kubernetes / Helm / GitOps / Zero-Downtime / Multi-Cloud

  • Enterprise AI & Workflow Automations

    Building deterministic AI validation engines and schema-driven RAG pipelines. At IOCL, designed systems parsing 5,000+ contracts monthly using LangChain, Pinecone vector stores, and RabbitMQ message brokers, eliminating 90% of manual enterprise audit time.

    LangChain / Pinecone / RAG / RabbitMQ / Contract Parsing

  • Low-Level Systems & Native Engineering

    High-performance native development using Rust and Tauri. Refactored cross-platform window overlay frameworks, architected deadlock-free concurrent IPC systems, and delivered zero-latency native media streaming pipelines across Windows, iOS, and Android.

    Rust / Tauri / Async IPC / Windows Win32 / Zero-Latency

  • Full-Stack Platforms & Payment Infrastructure

    End-to-end full-stack architectures utilizing Next.js 16 (App Router), TypeScript, modern relational & document databases, Stripe billing integrations, automated PDF generation, and asynchronous BullMQ / Redis queues.

    Next.js 16 / TypeScript / BullMQ / Redis / PostgreSQL / Stripe

(03)How I build

  1. 01

    Zero-Downtime Resilience

    System uptime isn't an afterthought. Architectural patterns must decouple failures via circuit breakers, asynchronous queues, and automated health checks to maintain flawless business continuity.

  2. 02

    Observability As A Core Contract

    If telemetry isn't real-time and actionable, troubleshooting is guesswork. Metrics, structured logging, and distributed tracing are integral to software delivery from day one, not bolted on after an outage.

  3. 03

    Deterministic & Idempotent Automation

    Manual intervention in deployment or failover is an operational vulnerability. Infrastructure should be codifiable, reproducible in any environment, and provably idempotent across configuration states.

  4. 04

    Full Client IP & Zero Vendor Lock-in

    Every platform, pipeline, and schema is delivered with 100% intellectual property ownership to the client. No proprietary platform dependencies, no recurring per-seat licensing traps, and clean, fully auditable codebases.

(04)The record

Resume (PDF)
  • Connect In Cloud

    Apr 2025 – Present

    Senior Full Stack & Cloud Systems Engineer

    • ↳Maintain 99.999% uptime SLA across 5+ production environments for global clients.
    • ↳Built deedpollservices.co.uk end-to-end: UK legal SaaS with automated PDF legal generation, Stripe subscriptions, passkey auth, and transactional email.
    • ↳Architected and deployed ridenoww.com: UK ride-hailing platform with React Native apps on App Store and Google Play, web portal, and real-time dispatch.
    • ↳Designed containerized multi-tenant cloud architectures, reducing hosting spend by 35% through auto-scaling and caching.
  • Indian Oil Corporation Limited (IOCL)

    Jul 2025 – Aug 2025

    Software Development Engineer — Enterprise AI

    • ↳Engineered an enterprise document intelligence and RAG platform processing 5,000+ contracts and vendor invoices monthly, cutting manual audit labor by 90%.
    • ↳Implemented declarative schema-based extraction pipelines with LangChain and Pinecone vector search, allowing non-technical auditors to configure document rules.
    • ↳Designed deterministic rule-based semantic validation engines catching cross-entity contract discrepancies prior to financial sign-off.
    • ↳Orchestrated asynchronous queue pipelines via RabbitMQ, achieving 3× processing throughput with auditable validation reporting.
  • M.it services & systems GmbH (Germany)

    Dec 2025 – Feb 2026 (Remote)

    Systems Software Engineer

    • ↳Audited and restructured high-performance Rust + Tauri native application, establishing platform abstraction gateways for multi-platform delivery.
    • ↳Engineered low-latency native media capture pipelines on Android (MediaProjection, CameraX) and iOS (AVFoundation, ReplayKit).
    • ↳Architected concurrency-safe IPC command handlers in Rust supporting 20+ concurrent invocations with zero thread starvation or memory leaks.
    • ↳Migrated Windows bindings to the official Microsoft windows crate, ensuring strict memory safety.
  • Dobby Ads

    Apr 2024 – Jun 2024 (Remote)

    Full Stack Developer (Internship)

    • ↳Integrated Stripe Connect to let third-party agencies accept payments directly from their clients.
    • ↳Shipped feature flagging via GitLab and Unleash for seamless feature rollouts.
    • ↳Built Vercel-style DNS integration enabling custom subdomains for clients.
    • ↳Implemented multi-role user management with CASL for fine-grained access control.
  • AwesomeSuite

    Jul 2023 – Feb 2024 (Remote)

    ReactJS Developer (Internship)

    • ↳Built dynamic, responsive UI for Awesome Social, a social networking management platform.
    • ↳Managed application state and data flow with Redux, optimizing performance.
    • ↳Integrated RESTful APIs for real-time data retrieval and updates across the app.

Let's
build.