Backend Engineer

Open to full-time

Bio

Muhammad R. is a Backend Engineer with over a decade of experience specializing in high-performance C++ systems for fintech and transaction processing platforms. His core stack includes C++, Python, and Shell scripting, used to build distributed systems, APIs, and microservices. Muhammad is adept with technologies like POSIX sockets, Redis, Docker, and DevOps tools such as Jenkins and Git, ensuring robust CI/CD practices. He also integrates HSMs for secure transaction processing and employs tools like SonarQube for code quality. At TPS Pakistan, Muhammad led the development of high-performance ISO8583 transaction modules and integrated Thales HSM for secure key management, enhancing the financial infrastructure for tier-1 banks. He was the lead developer for Visa Direct integration at Avanza Solutions, contributing to improved transaction flows and system reliability. Muhammad holds a Bachelor of Science in Computer Science from the National University of Computer and Emerging Sciences (FAST). He is well-suited for roles in advanced backend systems and financial technology solutions, with a readiness for relocation and employer sponsorship.

Expertise

C++PythonGitNumPySQLRelational Database

Video Intro

Assessments

General Project Assessment

(93/100)

Great on Implement LRU Cache AlgorithmMedium
Great on Understanding Rate Limiting in APIsMedium
Great on Ensuring Real-time Data Accuracy in Mobile AppMedium

Projects

Service Lead
AfinitiDec 2021 — Apr 2025
- Designed and maintained high availability microservices for large scale communication platforms.
- Improved production stability through better root cause analysis and defensive coding.
- Integrated MinIO object storage for secure attachment handling and persistence.
- Improved code quality by resolving SonarQube issues and increasing coverage.
c++Shell scriptingDistributed SystemsPOSIX SocketsDocker containersGitJenkinsJiraRest ClientValgrindsonarqubeaddress sanitizerVisual Code
Technical Lead
TPS PakistanJul 2021 — Dec 2021
- Led system integration testing for enterprise banking platforms.
- Built automation pipelines for patch, upgrade, and release validation.
- Acted as bridge between development, QA, and operations teams.
GitTeam Foundation ServerC++RACALL-ThalesERACOM-SafenetEclipseRest ClienSoap UILoad UIVTSFinsimOracle
Senior Software Engineer
TPS PakistanAug 2014 — Dec 2018
- Built high performance ISO8583 transaction processing modules.
- Integrated Thales HSM for PIN, MAC, ARQC/ARPC, and secure key management.
- Delivered Visa, MasterCard, JCB, CUP, and AMEX integrations.
- Led multiple ATM controller UATs and production go-lives.
Linux(RHEL)BoostRedisPOSIXHSMISO87JCBHYPERCOMVerifoneAMEXMasterCardVISAC++Shell ScriptingIntel VtuneOracle OCCISocket ProgrammingAPIsOracle DB
Senior Software Engineer
Avanza SolutionsDec 2018 — Apr 2021
- Developed transaction flows for ATM controllers and banking switches in C++.
- Lead developer for Visa Direct integration and certification.
- Improved transaction performance and system reliability.
Windows ServicesMS SQL ServerTortoiseSVNSocket WorkbenchC++Visual Studio.NET