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Hey, I'm Siddik

Backend Engineer · Fintech & AI · Distributed Systems

I build backend systems designed to perform under pressure, combining scalable cloud-native architecture with intelligent, agent-driven workflows. Focused on reliability, performance, and clean engineering.

sidmm747@gmail.com

Work

Experience

2+ years

Software Engineer

Paygasus · United States · Remote

Nov 2024 – Present
  • Built multi-tenant Fintech onboarding platform using Fastify, Next.js, and Google Cloud Spanner — cutting merchant onboarding time by ~35% via workflow automation and role-based access control.
  • Integrated Zoho CRM and payment gateways with event-based triggers across a 5-country distributed team — improving data accuracy by 40% with zero downtime during rollout.
  • Wrote backend test suites using Supertest and Vitest; Dockerized services and automated CI/CD with GitHub Actions, reducing deployment time by 50% and maintaining 80%+ test coverage.
  • Owned features end-to-end across backend, frontend, and infrastructure — communicating progress via async documentation and Jira, consistently shipping on schedule.

Full Stack Developer

Comtranse Technology · Kolhapur, India

Jun 2024 – Nov 2024
  • Developed 3+ React web apps with REST APIs and Material UI, improving UI response times by 30% through performance optimization.
  • Built React Native apps using Expo Router; managed Linux server deployments on cPanel ensuring 99.5% uptime.

Web Developer

Freelance

Feb 2024 – Jul 2024
  • Built and shipped production web applications independently — handled client requirements, architecture, and deployment solo.

Tools & Tech

Skills

Backend & Infra

PythonNode.jsExpress.jsFastifyFastAPIREST APIsEvent-Driven ArchitectureGCPDockerCI/CDGoLang

Frontend

Vue / NuxtNext.jsReact.jsReact Native (Expo)TypeScriptTailwind CSS

Databases

PostgreSQLMySQLMongoDBGoogle Cloud Spanner

AI / LLM

LangGraphLlamaIndexPineconeOllamavLLMPyTorchMCPClaude

Tools

GitHub ActionsJiraPostmanZoho CRM

Selected work

Projects

Aqlyn — AI-Native Productivity Platform

AI-first organizational productivity platform: smart task management, meeting intelligence, email notifications, and RBAC. Fastify API + Next.js frontend, live in production.

FastifyNext.jsPostgreSQLDrizzleAI/LLMDocker

Paygasus Fintech Platform

Built a Dockerized multi-tenant fintech platform with Fastify, Next.js, RBAC, CRM integrations, and payment gateway support.

FastifyNext.jsGoogle SpannerDockerVitestSupertestCRMPayment Gateways

SYNTHik AI — Chatbot Platform

Full-stack AI chatbot powered by LLaMA 3.1 via Ollama, with Clerk authentication and a type-safe Drizzle ORM data layer on PostgreSQL.

Next.jsOllamaLLaMA 3.1DrizzlePostgreSQLClerk

XDeepFM Recommendation Engine

22% accuracy gain in e-commerce recommendations using XDeepFM with temporal dynamics modeling. Published IJTE 2024.

PythonDeep Learning

SpiceMart — Billing App

Billing app with barcode scanning and invoice generation, streamlining SMB transactions.

React NativeExpoREST APIs
View more on GitHub

Academic

Education

B.Tech — Computer Science & Engineering

Shivaji University, Kolhapur

Dec 2020 – Jun 2024

CGPA: 8.4 / 10

Research

Publication

Enhanced Contextual Recommendation in E-commerce with XDeepFM

IJTE · Aug 2024

ISSN 0971-3034

22% accuracy gain using XDeepFM with temporal dynamics modeling in e-commerce recommendation systems.