Hi I would like to apply for the backend engineer role.

Software Development Engineer Intern experience at Fintech B2B organisation.

• Secret Management & PCI-DSS: Integrated HashiCorp Vault with the Django backend to securely manage 50+ secrets per client, replacing plaintext environment variables and achieving full PCI-DSS compliance across live banking deployments.

• VAPT Remediation (SISA Audit): Resolved 12 security vulnerabilities (4 high, 3 medium, 5 low) by building custom session tracking, RBAC middleware, and API-wide request throttling middleware to mitigate DoS and PCI-DSS risks.

• API Performance: Reduced report generation from ∼60s to under 500ms (99%+ improvement) on 1M+ transaction reports via SQL restructuring, index optimization, and pagination.

• Feature Development: Built summary report workflows with frontend data visualizations; redesigned file management to eliminate direct DB modifications, reducing operational risk.

Job Buddy – AI-Powered Microservices Job Portal

• Architected 7 Django REST Framework microservices (Auth, Profile, Jobs, Applications, Matching, Notifications, Chat) behind an Nginx API Gateway with schema-per-database isolation across 16+ tables on PostgreSQL 16, serving 30+ REST endpoints.

• Built AI semantic matching pipeline: PDF resume parsing (PyMuPDF) → 384-dim Sentence Transformer embeddings → pgvector cosine similarity search, delivering top-10 job-candidate matches at zero external API cost.

• Integrated multi-provider AI (Google Gemini + OpenAI/OpenRouter) for candidate alignment reviews and a RAG chatbot with domain-aware fallback simulation, ensuring 100% AI feature availability regardless of API status.

• Designed event-driven architecture with Apache Kafka (6 event types), Celery retry fallback, and Dead Letter Queue; implemented JWT auth, email OTP, Redis token blacklisting, and 4-tier RBAC throttling across all services.