Hi, my name is
Arif Iqbal.
I build scalable backend systems.|
Senior Full-Stack Engineer with 10+ years of experience building scalable SaaS and B2C platforms using Node.js, NestJS, PHP, Laravel, TypeScript, React, Vue.js, and AWS. Strong focus on backend architecture, event-driven processing, and high-performance APIs. 2.8+ years as a remote contractor in distributed international teams across EU and US time zones. Open to remote contract & full-time roles.
What I Do
I build reliable, scalable systems across the full stack — from frontend to API to cloud infrastructure.
B2C Platform Development
High-traffic commerce platforms with order management, inventory, and multi-channel support built to scale.
Subscription & Billing
Stripe-powered subscription systems — lifecycle management, webhooks, billing logic, and access enforcement.
Event-Driven Systems
Async workflows with RabbitMQ, AWS SQS, and Redis queues — idempotent processing, retry/backoff, and dead-letter queue patterns for fault-tolerant backends.
SaaS & API Engineering
Multi-tenant SaaS platforms and microservice APIs built with PHP/Laravel and Node.js/NestJS, with strict tenant isolation and cloud infrastructure on AWS.
Experience
A professional journey across e-commerce, logistics, SaaS, and real-time systems.
Senior Software Engineer @ Sprinting Software
Aug 2023 — Present
Developing key modules of high-traffic B2C commerce and multi-tenant SaaS platforms using React.js, NestJS, Laravel, and Node.js in a fully remote, cross-functional international team.
- →Improved order processing speed by 30–40% through API and database optimization.
- →Designed tiered loyalty & subscription system with recurring billing integration, supporting 1,000+ daily orders.
- →Built multi-tenant SaaS with event-driven async workflows (Laravel Redis Jobs/Events) with idempotency safeguards and retry/backoff.
- →Integrated third-party accounting systems, reducing manual entry and accelerating invoicing cycles.
- →Implemented pricing protection and domain safeguards to prevent revenue leakage.
Skills & Expertise
Full-stack capabilities across modern web technologies, cloud platforms, and payment systems.
Featured Work
A selection of projects showcasing problem-solving and measurable impact.
BoltBet — High-Concurrency Betting Engine
Real-time sports betting platform built for high concurrency — async bet settlement via RabbitMQ DLX, Lua-based edge rate limiting with JWT blacklist in OpenResty/Nginx, idempotency patterns, and integer money arithmetic to eliminate floating-point errors.
→ Async RabbitMQ DLX settlement — zero double-payout incidents under load
Serverless Notification System
Event-driven serverless notification pipeline on AWS — Lambda, SQS, SNS, DynamoDB, and Cognito with full Infrastructure-as-Code via AWS SAM and zero-touch CI/CD through GitHub Actions.
→ Fully serverless — zero infrastructure to manage, auto-scales with load
Bifrost Shop — Multi-Tenant QSR & Retail Ordering Platform
Enterprise multi-tenant ordering platform serving major Nordic QSR and retail brands — Sunset Boulevard, Carl's Jr., Bilka, and Harald Nyborg — as a cross-channel web app and native iOS/Android app from a single codebase.
→ 25+ tenant configurations across Sunset Boulevard, Carl's Jr., Bilka, Harald Nyborg, and Salling Group brands from a single codebase
RGS Nordic — Waste Management B2B Customer Portal API
B2B backend API powering a customer self-service portal for RGS Nordic — one of Scandinavia's largest waste management companies — giving corporate clients access to weighing reports, recycling metrics, orders, and invoices from their waste collection data.
→ Full self-service access to corporate waste data across 4 reporting domains: weighing, recycling, orders, and invoices
Writing
Technical deep-dives on backend architecture, Node.js, and building scalable systems.
Recommendations
From colleagues, clients, and collaborators — verified on LinkedIn.
“I collaborated with Arif across both the backend and frontend of a large-scale multi-tenant restaurant platform at Sprinting Software. The system covered a lot of ground — NestJS API, Vue.js storefron…”
Milan Sekulić
Frontend Developer · Sprinting Software
“I had the chance to work with Arif and really appreciated the attitude he brought to the team. Arif is someone who genuinely gives his best to meet expectations and deliver what’s needed. He will wor…”
Aleksa Ateljevic
Project Lead · Sprinting Software
“Arif worked in Sprinting for 2 years as a NodeJS/React/Vue developer. Arif can be trusted as a loyal, hard working and reliable developer. I can give Arif my sincere recommendation as a developer you…”
Nikola Schou
Founder and partner · Sprinting Software