7+ years Senior Software Engineer building production systems across frontend, mobile, backend, and realtime communication — and an M.Sc. in Computational Materials Science with hands-on FEM simulation research. I work across the full stack, apply AI-native development workflows daily (Claude, GPT, Gemini), and build scientific computing projects in Rust from first principles.

I am not limited to one domain — I can deliver across:

Production AI/LLM services — FastAPI backends, Claude/GPT integration, cost tracking, and intelligent workflows.

🔍 Code Review Assistant — Real-time Reviews with Tool Calling	FastAPI · WebSocket · Claude API · PostgreSQL · Redis · Docker	Real-time streaming code reviews · manual tool-calling loop · documentation lookup · style guide checking · production-ready
🎟️ Ticket Classifier — Claude LLM Integration	FastAPI · Claude API · PostgreSQL · Redis · Docker	Automatic ticket classification · suggested responses · cost tracking · Redis caching · production-ready API
📄 Scientific Paper Q&A — Full RAG Pipeline	FastAPI · pgvector · Claude API · embeddings · ragas evals · Docker	Complete RAG system · PDF ingestion · semantic chunking · vector search · grounded answers with citations · eval framework in CI
🔬 Research Synthesis Agent — Hybrid Search + Multi-Doc Planning	FastAPI · pgvector · BM25 · Agent Planning · Claude API · Langfuse · ragas	Hybrid search (vector + keyword) · multi-document agent orchestration · parallel retrieval · cross-document synthesis · agent tracing · advanced evaluation
🧠 AI Learning Companion — LangGraph State Machine	FastAPI · LangGraph · Claude API · pgvector · DeepEval · Haiku Fallback · Redis	3-agent state machine (Responder + Assessor + Recommender) · persistent learning state · cost-driven model fallback · DeepEval CI gates · production reliability

Production-grade web, realtime and cloud systems — frontend, backend, and realtime engineering.

🏦 Microfinance Platform (MFI)	Node.js · Express ·python. PostgreSQL · React/next js frontend	Loan lifecycle, auditing, python calculation engine, production-ready workflows
💼 Job Board Platform	React · Node.js · Apollo/GraphQL · MongoDB	Realtime job postings, search, recruiter workflows, analytics
🔁 Task Management — Realtime	WebSocket · Redis · React · Node.js	Realtime collaboration, presence, conflict resolution, offline sync
⚙️ Angular + Node.js Starter	Angular · Node.js · Express	Enterprise-ready starter with auth, routing, and API integration
☁️ AWS EC2 / Lambda / S3 — Hybrid Cloud	AWS EC2 · Lambda · S3 · API Gateway	Hybrid cloud patterns, serverless APIs, asset hosting and deployment
🔗 URL Shortener — Vue.js	Vue.js · Node.js · MongoDB	Simple, fast URL shortening service with analytics and link management
📊 Expense Tracker — Vue.js	Vue.js · Node.js · SQLite/Postgres	Expense tracking, charts, categories, and exportable reports

No ML or physics frameworks. Every solver built from mathematical first principles.

🧮 2D FEM Solver — Linear Elasticity	CST elements · COO→CSR sparse assembly · Conjugate Gradient · Rayon parallel	Von Mises stress · O(h²) convergence · validated vs Euler–Bernoulli
⚛️ N-Body Molecular Dynamics	Nosé–Hoover thermostat · 5-step NH Velocity-Verlet · O(N) cell list	NVE energy drift <0.002% over 50k steps · Q coupling study (Q=10 vs Q=100)
🪨 2D DEM Silo Simulator	Spring-dashpot contact · Coulomb friction (µ=0.5) · Velocity Verlet · O(N) cell list	Peak F_max ~18 kN · friction vs frictionless comparison · PFC2D reimplementation
📈 Monte Carlo Option Pricer	GBM path simulation · antithetic variates · Nelder-Mead calibration · Rayon	10k–1M paths · 2× sample efficiency · Greeks via central finite differences
🧱 HPC 2D Poisson Solver	Jacobi · Red-Black Gauss-Seidel · CG with CSR SpMV · OpenMP/Rayon	3.35× parallel speedup at N=1000 · L1/L2 cache crossover analysis · MLUP/s benchmarks
📐 Numerical Optimisation Engine	Steepest descent (Armijo) · CG Fletcher-Reeves + Polak-Ribière · Adam · SGD	CG 19× faster than steepest descent on Rosenbrock · κ=1–500 study · NN training from scratch
🔵 Stochastic Geometry Framework (C++)	MT19937 RNG · Boolean sphere model · Minkowski functionals · NLopt COBYLA	Contrast function minimised to <2×10⁻¹² · TU Freiberg doctoral-level course

Germany

Doctoral-level coursework:

Master Thesis — FEM Simulation, Fraunhofer IWM, Germany (2014–2015)

Research Engineer (Project Role) — FEM Simulation, Montanuniversity Leoben (Feb–Jun 2016)

Bangladesh

• Built large-scale React + TypeScript web applications with Apollo GraphQL and complex state management
• Developed React Native mobile solutions integrating GPS tracking and IoT device data
• Implemented Playwright E2E testing suites and established CI/CD quality gates
• Designed reusable UI component systems with Material UI, Storybook, and Figma
• Integrated Claude, GPT, Gemini into daily engineering workflows — architecture reviews, code auditing, prompt-driven implementation

• Built the entire mobile web app from scratch through to production — sole frontend engineer on the web product
• Implemented a complete biometric liveness-detection flow: OCR-based ID extraction, real-time liveness challenge (eye/smile sequence), verification completion
• Tech stack: React.js, React Native, Redux-saga, Node.js, AWS

• Rust backend (Axum + Tokio) with WebSocket gateway, Redis pub/sub fan-out, PostgreSQL
• Flutter offline-first mobile client: memory cache (<50 ms UI), outbox queue, background sync, SQLite (Drift)
• Custom WebRTC signaling relay in Rust; ICE/STUN/TURN with exponential backoff reconnect
• Custom binary protocol (payra_proto) via flutter_rust_bridge FFI — session resumption, sequence-based delivery, adaptive keepalive; Rust codec running on-device
• E2EE: Double Ratchet-inspired key ratcheting, AEAD ciphers
• Iterative architecture audits resolving triple-sync race conditions, ICE restart timing bugs, message deduplication failures

• Software Engineer · Simplo GmbH, Berlin
• Frontend Developer · Medici Living Group, Berlin
• Software Developer (Full-Stack) · Meramo Verlag GmbH, Berlin
  • React, Redux, Node.js, Express, MongoDB, Apollo GraphQL, D3.js

Bangla (Native) · English (Fluent) · German (B1)

I am open to a wide range of roles — not limited to scientific computing:

⭐ Available for AI-native,Scientific programming, frontend, full-stack, backend, or computational engineering roles · Berlin or remote