M Shazil Rehman
Islamabad
Summary
Senior Backend Engineer with 8+ years of experience designing and delivering scalable, secure, and high-performance backend systems using Node.js, TypeScript, Express, and REST APIs. Strong background in microservices architecture, API integration, DTO design, validation, and backend optimization, with extensive experience in e-commerce, Telecom, banking, Fin-tech (Financial Technology), and enterprise platforms. Proven ability to reduce defects, improve performance, and accelerate delivery through clean architecture, reusable components, and strict type safety. Experienced in collaborating with cross-functional teams across distributed environments and delivering production-grade systems used by large financial institutions.
Overview
8
8
years of professional experience
Work History
Senior Consultant / Backend Engineer
Systems Limited
12.2021 - Current
- Designed and developed scalable backend services using Node.js, TypeScript, Express, and REST APIs for enterprise and banking clients.
- Built strongly typed DTOs, reusable mappers, and validation layers, reducing code duplication by 30% and improving maintainability.
- Implemented modular service architecture and strict type guards, reducing API defects during QA cycles by 25%.
- Optimized API performance by resolving timeout issues, schema mismatches, and payload validation errors, improving reliability by 20%.
- Developed and maintained microservices-based integrations for billing, payments, and usage systems with complex nested JSON schemas.
- Collaborated with frontend, QA, DevOps, and business stakeholders to deliver end-to-end solutions.
- Supported production systems by debugging critical issues and delivering fixes within SLA.
- Improved developer onboarding speed by standardizing API response structures and mapping patterns.
- Environment: Node.js, TypeScript, Express, REST APIs, MongoDB, SQL, Microservices, Git, Postman, Mocha
BI Developer
AT Medics
10.2021 - 11.2021
- Led end-to-end design, development, and deployment of enterprise-grade dashboards and reporting solutions using SQL Server and Power BI, translating complex datasets into real-time, actionable insights that empowered executive leadership, improved KPI visibility, and enabled faster, data-driven strategic decision-making across multiple business units.
- Owned and scaled automated reporting solutions leveraging SQL Server and Power BI, increasing reporting accuracy by 25%, reducing turnaround time from days to hours, and streamlining operational workflows to improve efficiency, performance monitoring, and stakeholder confidence in analytics outputs.
Data Analyst
Huawei Technologies
02.2020 - 09.2021
- Designed and delivered business intelligence dashboards using Power BI and Tableau, providing executive leadership with clear performance metrics, trend analysis, and key performance indicators to support strategic planning and data-driven decision-making.
- Automated end-to-end data processing and reporting workflows using Python and R, reducing manual effort and improving reporting speed by 40%, while increasing consistency, reliability, and scalability of analytics outputs.
- Performed structured data extraction, transformation, and loading (ETL) using SQL from large-scale data platforms, including Hadoop and Sybase IQ, enabling actionable marketing performance analysis and network optimization insights.
Senior Associate Software Developer
Apollo Telecom
09.2018 - 02.2020
- Led the design, development, and maintenance of enterprise-grade web applications using Node.js, React, .NET, and SQL, supporting core business operations and delivering scalable, secure, and high-performance solutions used across multiple teams and environments.
- Built and scaled React and Node.js web applications serving 10,000+ active users, ensuring high availability, responsive user experience, and seamless frontend–backend integration while meeting enterprise performance and security standards.
- Optimized PostgreSQL queries, indexing strategies, and caching mechanisms, reducing average page load times by 65%, lowering database response latency, and improving overall application performance under high user traffic.
- Implemented automated unit, integration, and regression testing, increasing test coverage from 45% to 85%, significantly reducing production defects, improving code quality, and accelerating release cycles.
- Containerized backend and frontend services using Docker, enabling consistent deployments across development, staging, and production environments, reducing environment-related issues, and improving deployment reliability and rollout speed.
- Collaborated with cross-functional teams including QA, product, and DevOps, participating in code reviews, deployment planning, and production support to ensure stable releases and continuous improvement of enterprise systems.
Software Developer
Globia Technologies
10.2017 - 08.2018
- Designed, developed, and maintained scalable web applications using Java, JavaScript, SQL, and MVC frameworks, supporting enterprise business workflows and serving hundreds of daily users, while ensuring high performance, security, and maintainability across environments.
- Contributed to large-scale Java EE and .NET enterprise applications, leading UI development initiatives, collaborating with cross-functional teams during User Acceptance Testing (UAT), resolving defects, and improving application stability, usability, and release readiness by reducing post-UAT issues by 30%.
Education
Bachelor of Science - Information And Technology
PMAS Arid Agriculture University
Rawalpindi10-2017
Skills
- JavaScript (ES6), TypeScript
- Nodejs, Expressjs
- Reactjs
- RESTful API Development & API Design
- Microservices Architecture
- Database Systems (MongoDB, PostgreSQL, MySQL, SQL Server)
- API Integration & Financial APIs
- Schema Validation, Error Handling & Performance Optimization
- API Testing (Postman)
- Version Control (Git, GitHub, GitLab)
- CI/CD, Docker & Linux
- Banking & Enterprise Systems
Timeline
Senior Consultant / Backend Engineer
Systems Limited
12.2021 - Current
BI Developer
AT Medics
10.2021 - 11.2021
Data Analyst
Huawei Technologies
02.2020 - 09.2021
Senior Associate Software Developer
Apollo Telecom
09.2018 - 02.2020
Software Developer
Globia Technologies
10.2017 - 08.2018
Bachelor of Science - Information And Technology
PMAS Arid Agriculture University
Core Skills
Node.js, TypeScript, Express.js, REST APIs, Microservices, API Design, DTOs, Validation, Middleware, Authentication, Authorization, MongoDB, PostgreSQL, MySQL, SQL Server, Microservices Architecture, Clean Architecture, Modular Design, API Integration, Schema Validation, Error Handling, Performance Optimization, Mocha, Chai, Unit Testing, API Testing, Postman, Git, GitHub, GitLab, Bitbucket, CI/CD, Docker, Linux, VS Code, React.js, JavaScript (ES6+), HTML5, CSS3, Banking Systems, Digital Banking, Payments, Billing, Customer Onboarding, Financial APIs, Enterprise Systems