Full-Stack & Backend
Software Engineer
Hello, I'm Salman Ar Rahman.
Computer Science & Engineering graduate from AIUB. Currently working as a Software Engineer at JB Connect Ltd., building cloud-native SEO automation platforms. Specialized in Python (FastAPI), PostgreSQL, Next.js, AWS, Docker, and distributed worker fleets. Fluent in English and certified in Japanese (JLPT N3).
Core Tech Stack
About Me & Professional Summary
I am Salman Ar Rahman, a Full-Stack & Backend Software Engineer with over 3 years of hands-on professional experience. Currently at JB Connect Ltd., I contribute to 'Areus Index Checker', a high-throughput SEO index automation SaaS powered by FastAPI, PostgreSQL, AWS (ECS Fargate, RDS, SQS), and a distributed Selenium worker fleet. Previously at Enzan Koubou, I engineered tunnel inspection REST APIs and automated PDF reporting for the Singapore Land Transport Authority (LTA). At Bahaza.com, I developed flight/hotel booking APIs, relational database schemas, and Next.js SSR applications. Certified in JLPT N3 (working toward N2) and fluent in English, I excel in cross-functional international teams and thrive in high-demand technical environments.
Work Experience
Career history and key projects engineered across companies
JB Connect Ltd.
Software Engineer (Full-Time)Areus Index Checker (Cloud-Native SEO Automation Platform)
Architected and engineered a cloud-native SEO indexing & auditing platform delivering third-party Google Search Console index management via high-throughput RESTful APIs.
- Designed 13+ modular API routes using Python 3.13, FastAPI, SQLAlchemy 2.0, and Pydantic with clean layered architecture.
- Managed PostgreSQL 15 database schemas and automated zero-drift Alembic migrations across environments.
- Engineered distributed Selenium automation worker fleet with CapSolver CAPTCHA bypass, heartbeat monitoring, and auto-failover.
- Built AWS infrastructure (ECS Fargate, RDS, ALB, SQS, CloudWatch) with automated CI/CD via CodeBuild and CodePipeline.
Enzan Koubou Co., Ltd. (株式会社演算工房)
Full-Stack EngineerSingapore Land Transport Authority (LTA) enTIMS Tunnel Survey System
Contributed to tunnel survey data analysis and automated PDF reporting project for the Land Transport Authority (LTA) of Singapore.
- Developed REST APIs for structural inspection data in enTIMS and optimized database query performance.
- Designed and implemented pixel-perfect automated PDF report generation using custom CSS.
- Created comprehensive manual test cases and defect tracking to ensure high data accuracy.
- Managed Linux servers and automated deployments to AWS S3 using Docker containers.
Bahaza.com / Bahaza OTM
Full-Stack DeveloperTravel, Flight & Hotel Reservation Platform
Engineered full-stack features, third-party GDS integrations, and SSR web applications for an international travel booking platform.
- Built and maintained core booking APIs for flights, hotels, and Hajj/Umrah pilgrimage packages.
- Implemented secure authentication and authorization systems using JWT and OAuth2.
- Developed Next.js Server-Side Rendered (SSR) frontend optimized for fast navigation and SEO.
- Containerized microservices using Docker and authored unit and integration test suites.
Technical Skills
Proven expertise across backend, cloud infrastructure, and modern web applications
Programming Languages
Backend & API Architecture
Cloud & DevOps
Databases & Storage
Automation & Web Scraping
Frontend Development
Tools & Collaboration
Languages & Qualifications
Featured Work & Projects
Key platforms and enterprise systems engineered across my career
Areus Index Checker (SEO Automation Platform)
Cloud-native SEO indexing and audit SaaS built at JB Connect Ltd. Features 13+ FastAPI modular route services, PostgreSQL 15, AWS ECS Fargate, and a distributed Selenium worker fleet with auto-recovery and CapSolver bypass.
Python 3.13
FastAPI
PostgreSQL 15
AWS (ECS
RDS
SQS)
Selenium
Docker
Type
Enterprise SaaS (Full-Stack / Backend)
Category
Cloud SaaS / Backend & Automation
enTIMS Tunnel Survey & Automated PDF Reporting
Developed at Enzan Koubou for Singapore Land Transport Authority (LTA). Built REST APIs for tunnel structural inspection data, query performance tuning, pixel-perfect CSS-driven automated PDF reports, and AWS S3/Docker deployments.
JavaScript
React.js
Laravel (PHP)
MySQL
Docker
AWS S3
Linux
Type
Government Enterprise Project (LTA Singapore)
Category
Web Application / Data Processing
Bahaza Travel & Booking Platform
Full-scale travel booking platform with airline GDS, hotel database, and payment gateway integrations. Implemented secure OAuth2/JWT auth, Next.js SSR frontend, and Docker microservices.
Next.js
Node.js
Express.js
MySQL
Docker
AWS
JWT/OAuth2
Type
Commercial Platform (Full-Stack)
Category
E-Commerce / Travel Platform
Education & Certifications
Academic credentials, official language certificates, and teaching experience
American International University-Bangladesh (AIUB)
Graduated with comprehensive coursework in algorithms, data structures, software engineering, and database systems.
Japanese Language Proficiency (JLPT N3 / NAT-TEST 3Q)
Capable of technical discussion and daily business communication. Actively preparing for JLPT N2.
Japan Auto Mechanic School of Bangladesh
Taught Japanese language fundamentals and workplace etiquette to automotive technicians preparing for employment in Japan.