Software Engineer with 1+ years in ASP.NET Core & RAG systems
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Backend Software Engineer specializing in C#, ASP.NET Core, and applied LLM/RAG systems. Design and ship scalable RESTful APIs, microservices, and production retrieval pipelines (vector + knowledge-graph) at Onnorokom Projukti Ltd. Strengths in data structures, algorithms, and system design (700+ problems solved across LeetCode, Codeforces, and CodeChef). Seeking backend or applied-AI engineering roles where I can build high-performance, reliable distributed systems.
Khulna University of Engineering & Technology (KUET)
B.Sc. · Computer Science & Engineering
January 1, 2020 – October 1, 2025
Onnorokom Projukti Limited
Assistant Software Engineer (R&D)
June 1, 2025 – Present
Dhaka, Dhaka Division, Bangladesh
Bitfest KUET
Event Coordinator
January 1, 2025 – February 1, 2025
Khulna, Khulna Division, Bangladesh
HTML-to-PDF.NET
April 1, 2026 – Present
Built a custom five-stage rendering pipeline (HTML parse -> CSS cascade -> LATEX pre-measure -> layout -> render) producing vector PDFs at ~1ms/page without any headless browser. ~1,800-line layout engine handles block/inline flow, multi-page breaks, colspan tables, base64-embedded images, and LATEX math (inline & display); Bengali/Unicode script via HarfBuzz shaping. Stack: C#, .NET 8, ASP.NET Core, AngleSharp, SkiaSharp, SkiaSharp.HarfBuzz, CSharpMath.SkiaSharp.
CAB Management System
January 1, 2026 – Present
Five-role platform (Admin, Finance, HR, Travel Manager, Customer) spanning 5 MVC areas, 78 views, and 12 entity models with real-time trip tracking via SignalR. Five-star driver rating system with leaderboards; proactive license-expiry alerts 30 days out; PDF invoice generation and monthly P&L reports via QuestPDF and MailKit. Stack: C#, ASP.NET Core 8 MVC, Entity Framework Core 8, SQL Server, SignalR, Chart.js, QuestPDF, MailKit, ASP.NET Core Identity.
View ProjectAdvanced Q&A RAG
October 1, 2025 – Present
Nine-stage pipeline: query-clarity detection -> GPT-40-mini rewriting -> entity extraction -> hybrid BM25+dense retrieval -> cross-encoder reranking -> source-cited generation; supports Bengali, English, and Banglish. BAAI/bge-reranker-v2-m3 reranker reduced hallucinations by 75% vs a general RAG baseline; indexes 100 documents in 2-5 minutes on GPU. Stack: Python, FAISS, Qdrant, pgvector, multilingual-e5-large, BAAI/bge-reranker-v2-m3, Neo4j, Ollama (Qwen3-80B), GPT-40-mini.
View ProjectMedia Converter AWS
June 1, 2025 – August 1, 2025
Desktop app transcoding video to multiple resolutions with source-quality preservation; background worker streams output to S3-backed storage without blocking the API thread. JWT-authenticated API offloads all encoding to local ffmpeg, eliminating AWS MediaConvert per-minute charges for CPU-bound jobs. Stack: C#, ASP.NET Core, MySQL, JWT, AWS S3, ffmpeg, worker queues.
View ProjectRAG Chatbot with Full-Duplex Voice
October 1, 2024 – January 1, 2026
Conversational assistant with full-duplex voice I/O and hybrid BM25+FAISS retrieval; vector search under 50 ms, end-to-end response 1.5-3.5 s via Groq (Llama 3.1 8B Instant). Multi-turn memory, query reformulation, hallucination detection, and automated SMTP email notifications; exports chat history in JSON, Markdown, and HTML. Stack: Python, FastAPI, FAISS, BM25, Sentence Transformers (BAAI/bge-base-en-v1.5), Groq API, SMTP.
Introduction to Model Context Protocol
Anthropic
March 1, 2026 – Present
Introduction to Claude AI Sub-Agents
Anthropic
March 1, 2026 – Present
Software Engineer Certificate
HackerRank
April 1, 2025 – Present
Cultural Fit Analysis
The candidate's diverse personal projects, ranging from a custom PDF renderer to multiple advanced RAG systems and a CAB management platform, demonstrate a strong passion for software development and a willingness to explore various technical domains. The experience at Onnorokom Projukti Limited aligns well with a target role focused on backend and applied AI. The competitive programming background and certifications indicate a drive for continuous learning and self-improvement. The breadth of skills across languages, backend frameworks, AI/LLM, databases, and DevOps suggests adaptability and a broad technical interest, which generally contributes positively to cultural fit in dynamic engineering environments.
Soft Skills & Operational Fit
The candidate's project descriptions and experience highlight a proactive approach to problem-solving and a focus on performance optimization. The mention of Agile team collaboration and Git-based code review indicates an understanding of modern development workflows. The 'Event Coordinator' role, though brief, suggests organizational and communication skills. However, without direct interview data, a deeper assessment of soft skills like leadership, conflict resolution, or detailed communication style is not possible.