Challenge
Consolidating fragmented sales data into a secure, centralized system with specific permission levels for different organizational roles.
Full Stack · Freelance
Enterprise CRM & Sales Pipeline
Developed an enterprise CRM from scratch for a Swedish client, engineering a Java (Spring Boot) REST API backend connected to a PostgreSQL relational database and a Next.js frontend. The platform features dynamic lead tracking, automated sales stages, and real-time reporting modules surfacing pipeline health, conversion trends, and sales KPIs. Implemented fine-grained Role-Based Access Control (RBAC) and secure session management to protect sensitive enterprise data while maintaining sub-200ms query performance across team activity timelines.
Solution
Engineered from the ground up a Java (Spring Boot) backend with PostgreSQL, featuring fine-grained permission logic (RBAC) and RESTful API endpoints paired with an intuitive Next.js Dashboard UI.
Outcome
Improved team productivity by streamlining lead follow-ups and providing stakeholders with actionable data insights through custom analytics modules.
Architecture & Engineering Scope
01 / Frontend Layer
Component Architecture & UX
Engineered with modern React/Next.js component architectures, strict TypeScript interfaces, responsive layouts, and optimized Core Web Vitals.
02 / Backend & APIs
Microservices & Real-Time Sync
Decoupled RESTful APIs, real-time WebSocket state synchronization, centralized error logging, and resilient microservices.
03 / Data & Security
Schema Optimization & RBAC
Normalized relational database schemas (PostgreSQL/MySQL), Redis caching, RBAC permissions, and secure JWT authentication.
04 / Measurable Impact
Latency, Scaling & Delivery
Turnkey delivery, sub-200ms latency, high availability, and maintainable documentation for seamless long-term scaling.
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