Syed Z. is a Full Stack Engineer with over eight years of experience in full-stack development and microservices architecture. Proficient in Golang, Node.js with Express, LoopBack, and NestJS, Syed builds robust APIs and microservices. He utilizes .NET Core and ASP.NET MVC for backend solutions and React.js for responsive frontends. His expertise extends to databases like PostgreSQL, MySQL, MongoDB, and Redis, with a focus on secure authentication, CI/CD, and code quality practices. At HeuristicSol PVT LTD, Syed led the… Show more

1. Senior Full Stack Developer

   Sprinting Softwares, Denmark (Remote from Pakistan)Dec 2025 — Present

   • Building and maintaining a multi-tenant ERP platform for the waste and recycling industry using NestJS, TypeScript and Prisma ORM with a PostgreSQL database.
   • Developing and extending finance modules including invoice PDF generation (pdf-lib), surcharge line handling, multi-tenant payment terms and client-specific invoice templates per tenant configuration.
   • Implementing inventory and recycling modules (physical stock, inventory transfers) following Domain-Driven Design patterns with aggregate roots, repositories and value objects.
   • Integrating AWS S3 for file storage, including automated PDF upload, checksum generation and secure file retrieval workflows.
   • Contributing to the Global Back Office (GBO) React.js frontend — building UI screens, API integrations and data validation flows aligned with backend module changes.
   • Applying code quality standards with ESLint, Prettier and TypeScript strict mode across a large monorepo codebase.

   NestJSTypeScriptPrisma ORMPostgreSQLAWS S3React.js
2. Senior Software Engineer (Backend)

   HeuristicSol PVT LTD, LahoreMay 2022 — Nov 2025

   • Led the transformation of a legacy monolithic application into a fully distributed, region-based microservices platform built on React.js (frontend), Node.js (Express, Repository Pattern), GO Lang services, MySQL, Redis and Google Cloud Platform.
   • Designed and implemented core backend services—Document Service, Screening Service, and Reporting Service—using repository pattern. Ensured each service exposed well-defined RESTful APIs consumed by the React frontend.
   • Orchestrated real-time screening by integrating World Check, Google Custom Search, and DOW Jones/Factiva APIs. Processed millions of records for ongoing due diligence.
   • Developed Google Cloud Functions and Cloud Scheduler jobs to automate critical workflows—document-expiry alerts, ongoing re-screening, and email notifications—reducing manual intervention by 90%.
   • Embedded DocuSign API for seamless, audit-compliant electronic signature of agreements and fund documents. Automated document upload, storage, and signed-document retrieval in GCP buckets.
   • Lowered API response times under peak loads by fine-tuning MySQL queries, caching strategic data in Redis, and employing region-aware deployments for low latency.
   • Delivered a resilient, compliance-ready platform supporting multiple funds and thousands of concurrent users, enabling 50% faster onboarding and fully automated compliance reporting.

   React.jsNode.jsGO LangMySQLRedisGoogle Cloud Platform
3. Senior Software Engineer (Backend)

   Qult Technologies, USA (Remote)Nov 2023 — Dec 2024

   • Led backend development on Node.js using LoopBack v3 with MongoDB as the primary datastore, and integrated large language models for advanced AI features.
   • Designed & implemented RESTful endpoints for job postings, candidate profiles, applications and recruiter workflows—complete with JWT-based authentication and role-based access control.
   • Implemented AI-driven features: Resume Builder, Resume Ranking, Resume Parsing and AI Interview System Integration.

   Node.jsLoopBack v3MongoDB
4. Software Engineer (Backend)

   INIT Pvt Ltd, KarachiJun 2021 — Mar 2022

   • Developed .Net Core APIs with MS SQL for an Angular front-end, implementing role-based authentication and multi-level approval workflows.
   • Built dynamic modules for 'by the bank' & 'against the bank' law cases, law firms, courts, police stations, and advisory services.
   • Deployed to National Bank Pakistan, centralizing legal case management and streamlining compliance.

   .Net CoreMS SQLAngular
5. Software Engineer (Backend)

   Kalsoft LLC, KarachiDec 2019 — Jul 2020

   • Developed .Net Core APIs with MS SQL for an internal Mobilink employee portal, using repository pattern with interfaces and Dapper for high-performance data access.
   • Implemented secure authentication, role-based authorization, and audit logging for employee financial transactions.
   • Integrated the backend with JazzCash payment services, facilitating seamless financial operations for employees.

   .Net CoreMS SQLDapper
6. Software Engineer (Backend)

   Interface Technologies, KarachiAug 2017 — Nov 2019

   • Built a secure ASP .Net MVC application, integrating MS SQL with SAP for order processing.
   • Architected data access using Entity Framework and Dapper within a repository pattern to ensure high-performance and maintainability.
   • Implemented comprehensive order tracking, inventory management, and reporting features.

   ASP .Net MVCMS SQLSAP

1. Bachelor of Science in Computer Science

   Islamia University BahawalpurBahawalpur, Punjab, Pakistan2012 — 2016