résumé
Mahadi Zulfiker
Full-stack software engineer · Dhaka, Bangladesh · 3 years shipping production systems.
- Full-Stack Software Engineer·SeloraXNov 2025 → Present
- Built the SeloraX voice-AI call agent engine (realtime Bangla speech over a SIP gateway).
- Sole author of Smart Sheba, a Daraz-style marketplace with a wallet and tree commission engine.
- Shipped SEO Studio and AI Marketing Studio tools; published internal npm packages.
- Contributor to the core multi-tenant SaaS: backend, dashboard, and frontend.
- Full-Stack Engineer·TalktivityJun 2025 → Present
- Own the React Native / Expo mobile app and over half of the Next.js web frontend.
- Work across the realtime audio pipeline: LiveKit/WebRTC with Groq STT/LLM and Kokoro TTS.
- Cut a 32% incomplete-score rate on AI reports to near zero by reworking the BullMQ scoring queue.
- Full-Stack Engineer·AnirixAug 2025 → Oct 2025
- Developed backend services and frontend improvements with modern frameworks.
- Worked across a distributed, remote team.
- Frontend Engineer·Softvence AgencyJun 2025 → Jul 2025
- Built reusable component architecture and improved front-end performance.
- Co-Founder & Full-Stack Engineer·AMGoalJan 2025 → Aug 2025
- Owned architecture, backend, frontend, and delivery.
- Data Annotator·Intelligent MachinesOct 2020 → Mar 2021
- Produced high-quality labeled datasets and refined annotation workflows.
- TalktivityCore contributor
Real-time voice-AI English coach: talk to an AI tutor, get a CEFR report, replay every mistake.
- SeloraX Voice AIPrimary author
Bangla AI call agent, grown into a multi-tenant platform merchants run themselves.
- Smart ShebaSole author
Daraz-style multi-vendor marketplace with a wallet and a tree commission engine, built solo.
- NewTech EngineeringPrimary author
Company website + admin CMS for a manufacturer, staff manage everything, no dev needed.
- Frontend
- React · Next.js · TypeScript · Tailwind CSS · Redux · shadcn/ui · React Native
- Backend
- Node.js · Express · NestJS · REST · GraphQL · Prisma
- Data
- PostgreSQL · MongoDB · MySQL · Redis
- Platform & DevOps
- Docker · Vercel · CI/CD · AWS S3 / R2 · npm packages · Git
- AI & Realtime
- LiveKit / WebRTC · Gemini · Groq · LLM integration · TTS/STT
- Payments
- Stripe · SSLCommerz · AamarPay · Lemon Squeezy · EPS
- BSc in Computer Science & Engineering (Honors)Uttara University · 2027
- HSC & SSCUttara High School & College · 2023