Saiful Islam Saiful Islam

Saiful Islam

Staff Engineer | Lead Application Developer

call +880 1772957799 mail [email protected] link linkedin.com/in/saiful-islam location_on Chittagong, Bangladesh

Professional Summary

Staff Engineer and "Force Multiplier" with 9+ years of experience architecting high-throughput distributed systems. Specialist in solving Organizational-level Complexity through Platform Engineering, Architectural Governance, and Performance Strategy. Proven track record of evolving infrastructure to handle 500K+ RPM (8k+ RPS) while reducing Time-to-Market by 40% through standardized developer platforms. Expert at bridging business strategy with deep technical execution, instituting RFC cultures and Domain-Driven Design across multi-team organizations.

Engineering Impact & Scalability

500K+ Peak Throughput (RPM)
40% Faster Time-to-Market
20% Cloud OpEx Savings
99.99% Service Availability

Technical Leadership & Platform Strategy

  • High-Scale Distributed Systems

    Architecting event-driven backends using Kafka and Redis for mission-critical data processing. Specialist in distributed consistency, idempotency, and solving CAP theorem trade-offs at scale.

  • Internal Developer Platforms (IDP)

    Scaling engineering velocity by building shared infrastructure-as-code (IaC) templates, automated quality gates, and centralized observability stacks used by multiple product teams.

  • Architectural Governance & DDD

    Guiding the transition from legacy monoliths to Modular Monoliths and Microservices. Leveraging Domain-Driven Design (DDD) to enforce strict boundaries and reduce team coupling.

  • Cross-Org Mentorship & RFCs

    Championing a culture of documented alignment through RFC (Request for Comments). Mentoring Senior Engineers and defining technical career ladders across the organization.

Professional Experience

Lead Application Developer | RankMyList

2023 – Present

Key Focus: Platform Engineering, Multi-Org Strategy, Cloud Architecture, Mentorship, Cost Optimization

  • Architectural Governance: Spearheaded the transition of the core platform to a Modular Monolith architecture, reducing cross-team development conflicts by 40% and establishing strict domain encapsulation via static analysis tools.
  • Global Scale Infrastructure: Engineered a high-availability roadmap using Redis & Kafka to handle peak traffic of 500K+ RPM, implementing sophisticated circuit-breaking and rate-limiting strategies to protect downstream services.
  • Mentorship & Culture: Defined the technical career ladder for the engineering org and mentored 5+ Senior Engineers, shifting the culture toward decentralized decision-making through standardizing the RFC process.
  • Platform Cost Efficiency: Architected a multi-tenant cloud-native infrastructure on GCP, achieving 99.99% availability while reducing operational OpEx by 20% through rightsizing and managed service migration.
  • Enterprise Integration: Led the technical architecture for DeshiCraft.com.bd, designing a secure, high-throughput vendor-integration API that reduced onboarding time by 60% and directly increased profitability by 25%.

Senior Software Engineer | RankMyList

2020 – 2023

Key Focus: Event-Driven Systems, Org-wide Standards, Observability

  • Unified Notification Infrastructure: Architected a centralized Real-time Notification Engine supporting 500M+ monthly events, delivering sub-second latency with effectively exactly-once delivery via idempotent consumers and transaction-aware producers across 4 product lines.
  • Engineering Excellence: Introduced and scaled the RFC process across the engineering org, doubling cumulative team delivery output by unifying architectural patterns and reducing redundant rework.
  • Observability Strategy: Implemented a standardized telemetry stack (ELK/Prometheus), reducing Mean Time to Detection (MTTD) of production incidents by 50% across the platform ecosystem.

Software Engineer | RankMyList

2017 – 2020

Focus: Backend Engineering, Database Tuning, Legacy Optimization

  • Performance Tuning: Optimized core database schemas and API query patterns, reducing response times by 30% and significantly improving mobile application retention metrics.
  • Full-Stack Implementation: Delivered critical modular features for the flagship RankMyList platform, maintaining a 100% adherence rate to engineering best practices and technical specifications.

Architectural Portfolio

Multi-Channel Notification Hub

A platform-agnostic, event-driven service built for extreme low-latency. Utilized Kafka for message queuing to ensure reliable delivery at scale.

Cloud-Native E-Commerce Core

Modernization of a retail platform using GCP and Docker. Focused on elastic scaling and high-availability database replication.

Engineering Toolkit

System Design Distributed Systems Microservices Domain-Driven Design GCP Kafka Redis Java / Spring Boot PHP / Laravel SQL / NoSQL Docker Kubernetes CI/CD RFC / Technical Writing

Education

B.Sc. in Computer Science & Engineering

Premier University Chittagong, Bangladesh

December, 2016