Backend Systems · Platform Engineering

Mahmudul Hasan Dip

Lead Software Engineer

I build distributed systems, design APIs,
and architect platforms at scale.

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9+Years
5+Articles
10+Systems
Md. Mahmudul Hasan Dip
Currently building at UCB PLC

Deep dives on backend systems coming soon.

Distributed Systems·6 min read

Scaling upay's High-Throughput Golang Financial Gateway

Problem

Validating a single financial transaction required querying four downstream services sequentially, causing unacceptable API timeouts under peak load.

Achieved near-zero latency by parallelizing downstream lookups via Goroutines, and eliminated distributed database locks using the Saga pattern.
GolangMicroservicesConcurrencyDistributed Systems
UCB One Digital SuperappActive

Architected a polyglot microservices ecosystem for United Commercial Bank's flagship digital platform.

GolangPython/DjangoKubernetes
Architecture Cases

Real systems. Real tradeoffs. Engineering thinking documented.

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Distributed Systems·6 min read

Scaling upay's High-Throughput Golang Financial Gateway

Problem

Validating a single financial transaction required querying four downstream services sequentially, causing unacceptable API timeouts under peak load.

Achieved near-zero latency by parallelizing downstream lookups via Goroutines, and eliminated distributed database locks using the Saga pattern.
GolangMicroservicesConcurrencyDistributed Systems
Security & Architecture·6 min read

Architecting a Polyglot CIAM Engine for Digital Banking

Problem

Monolithic architectures failed to balance sub-second biometric authentication spikes with the heavy stateful complexity required for core banking synchronizations.

Achieved zero-downtime authentication spikes with sub-50ms latency at the edge, while safely orchestrating millions of stateful customer profiles alongside high-throughput gRPC microservices.
ArchitectureGolangPythonSecurity
Selected ProjectsView all →
UCB One Digital SuperappActive

Architected a polyglot microservices ecosystem for United Commercial Bank's flagship digital platform.

GolangPython/DjangoKubernetes
Upay Mobile Financial ServicesActive

Architected the core high-throughput transaction engine and universal financial aggregator for a major digital wallet.

GolangPython/DjangoPostgreSQL
Core Expertise

Languages

GoPythonTypeScriptSQL

Systems & Architecture

Distributed SystemsMicroservicesEvent-Driven ArchitecturePlatform Engineering

Infrastructure & Data

Docker / K8sPostgreSQLRedisKafka
Experience
Mar 2025 – Present

Lead Software Engineer

United Commercial Bank PLC

Leading a backend engineering team for UCB One (flagship digital banking app) in collaboration with the broader engineering group, directing backend solution design, microservices architecture, and ongoing system evolution.

Nov 2020 - Mar 2025

Senior Software Engineer

উপায় (UCB Fintech Company Limited)

Led software development teams to design, architect, and deliver high-throughput MFS features to production. Established the core architectural patterns for highly decoupled, polyglot payment infrastructures.

May 2019 - Nov 2020

Software Engineer

Genex Infosys Limited

Led backend development for comprehensive Human Resource Management Systems (HRMS) and critical internal tooling using PHP and the Laravel framework.

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Md. Mahmudul Hasan Dip
Md. Mahmudul Hasan DipDhaka, Bangladesh · 9+ years

I am a Lead Software Engineer and Architect specializing in backend systems, distributed architecture, and engineering team leadership. I design and deliver high-throughput polyglot microservices (Go/Python), resilient developer platforms, and cryptographically secure architectures.

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