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Sovon Saha

I architect and ship scalable SaaS platforms for teams that need reliability at scale.

Senior Software Engineer — SaaS, Multi-Tenant Systems, Next.js, Node.js, Laravel

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12+

Years Engineering

20M+

API requests / month

~90%

Test coverage achieved

About

Senior Software Engineer with 12+ years of experience designing and delivering SaaS, eCommerce, fintech, and enterprise platforms using Node.js, Next.js, Laravel, PostgreSQL, Redis, Docker, and AWS.

Proven track record leading architecture, mentoring engineers, and building scalable multi-tenant systems serving millions of requests monthly. Experienced in modernizing legacy applications, designing RESTful APIs, optimizing performance, and driving engineering standards through code reviews, testing, and CI/CD automation.

Active user of AI-assisted development tools including Claude, Gemini, OpenCode, and GitHub Copilot to accelerate delivery while maintaining code quality and reliability.

Selected Work

Multi-Tenant eCommerce SaaS

Hundreds of merchants, 20M+ API requests monthly

Node.jsNext.jsTypeScriptMySQL+4 more

Legacy PHP Modernization

Financial services platform — migrated core modules with zero downtime

PHPLaravelPostgreSQLRedis+2 more
View all work

Skills

Backend
PHP (Laravel)Node.jsTypeScriptREST APIsGraphQL
Frontend
Next.jsReactReduxJavaScriptTailwind CSSCSS3
Databases
PostgreSQLMySQLRedisMongoDB
Queue Systems
Redis QueuesRabbitMQBullMQ
Infrastructure
AWSDockerKubernetesCI/CDLinux
Architecture
Distributed SystemsMicroservicesEvent-DrivenMonolith Refactoring
Engineering
TDDQuery OptimizationAgileAPI VersioningRBACGDPR
AI-Assisted
ClaudeGeminiOpenCodeCopilot

Experience

Part-Time Lead Architect @ Kaizenflow

2020 – Present
  • — Led architecture and technical direction of a multi-tenant eCommerce SaaS platform (eDokan) serving hundreds of merchants and processing 20M+ API requests monthly.
  • — Designed tenant isolation, subscription management, RBAC, and scalable merchant onboarding workflows.
  • — Built and maintained React and Next.js applications used by merchants and platform operators.
  • — Built an AI-powered messaging automation platform integrating LLM capabilities.
  • — Led code reviews, mentored engineers, established development standards.
Node.jsNext.jsTypeScriptMySQLNoSQLRedisAWSDockerREST APIs

Senior Software Engineer @ RemoteDevs

Dec 2021 – Feb 2026

Lithuania (Remote)

  • — Developed and maintained production web applications using PHP, PostgreSQL, Redis.
  • — Modernized legacy PHP systems by migrating modules into structured Laravel applications.
  • — Designed RESTful APIs for invoicing and debt-management platforms.
  • — Achieved ~90% test coverage with PHPUnit on newly developed services.
  • — Improved deployment reliability through CI/CD automation and containerization.
PHPLaravelPostgreSQLRedisDockerCI/CD

Senior Software Engineer @ Banglafire Solution Ltd.

Dec 2018 – Nov 2022
  • — Built and maintained a Warehouse Management System (WMS) for Japanese clients using GeneXus low-code platform.
  • — Developed enterprise PHP applications and backend services.
  • — Designed complex reporting and analytics systems using PostgreSQL and MySQL.
  • — Optimized slow-performing queries through indexing and execution-plan analysis.
PHPGeneXusPostgreSQLMySQL

Team Lead @ Inspire Envoy Limited

2017 – 2018

Software Engineer @ OployeeLabs Limited

2013 – 2014

Education & Achievements

Education

Master's in Information Technology (MIT)

IIT, University of Dhaka

2015 – 2016

BSc. in Electrical & Electronics Engineering (EEE)

North South University, Dhaka

2008 – 2012

Key Achievements

  • — Architected and delivered multi-tenant SaaS systems serving 20M+ API requests per month.
  • — Achieved ~90% automated test coverage on production services.
  • — Mentored junior and mid-level engineers through code reviews, architecture discussions, and knowledge-sharing sessions.
  • — Improved application performance through Redis caching, query optimization, and API tuning.
  • — Built AI-powered workflow automation solutions leveraging LLM technologies.

Ready to discuss your project?

Tell me about what you’re building. I’ll respond within 24 hours with initial thoughts and next steps.

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