Full-Stack Developer (Forum + Marketplace Platform) — React / Next.js / Node / DevOps

Company : L4RG US LLC

Project : BlackHatSEO.co.in — Modern Forum + Marketplace Platform

Location : Remote

Experience Required : 4–8+ years

Job Type : Part-time . Freelancer / Contract (6–12 Months)

Start Date : Immediate

Experience : 5–10 Years

Apply : Email : l4rgindia@gmail.com

About the Role We are building a cutting-edge SEO & Growth Hacking Community + Marketplace , engineered for performance, security, and scale.

Think : BlackHatWorld 2.0 — rebuilt with modern architecture, real-time systems, advanced search, intelligent matching, and a secure escrow layer.

We’re hiring a Full-Stack Architect-level Engineer who can own the technical vision and build a world-class platform used by global marketers, growth hackers, affiliates, and online businesses.

Reference Forum Site : https : / / www.blackhatworld.com /

What You Will Build As our senior engineer, you will architect and implement :

Platform Modules Real-time Forum System (threads, replies, moderation dashboard)

Marketplace Engine (service listings, advanced filters, ratings, reviews)

Escrow Payment Workflow (fund-hold → deliverable → dispute → release)

Seller Performance Analytics (delivery time, conversion rate, dispute rate)

Advanced Search Engine using Meilisearch / Algolia

User Profile & Reputation System

Admin & Moderation Platform

Content Hub (SEO-optimized learning center)

What We Expect — Core Technical Skills Frontend React.js, Next.js 13 / 14 (App Router + RSC)

TailwindCSS + ShadCN UI

Zustand or Redux Toolkit

Strong understanding of SSR / SSG / ISR and SEO optimization

Pixel-perfect UX building skills

Backend Node.js + Express / NestJS

REST API architecture

Authentication : JWT, OAuth, RBAC

WebSockets (Socket.io)

Redis (queues, caching, session)

Prisma ORM

Database PostgreSQL (must)

Schema design for forums, search, transactions, disputes

Search Engine Meilisearch / Algolia

Index ranking rules, synonyms, relevance tuning

Payments Razorpay / Stripe

Webhook security

Split payments / payouts

Transaction monitoring

DevOps Vercel + GitHub Actions

Serverless functions

CDN, image optimization

Sentry / LogRocket

Bonus Skills (Huge Plus) Built a forum, SaaS community, or marketplace previously

Experience with escrow systems or wallet-based transactions

Knowledge of SEO, automation, growth hacking tools

Experience with load testing, large user bases

Security : rate limiting, anti-spam, bot detection

AI automation experience (Python or JS)

Experience Required 5–10 years professional full-stack development

Proven execution of large-scale platform (forum, marketplace, SaaS, community)

Ability to convert business requirements into scalable architecture

Strong product thinking & ownership mindset

What We Offer Work on a global product designed for millions of users

Full architectural freedom

High compensation for high performance

Zero bureaucracy — fast execution team

Long-term leadership role available

How to Apply Email : l4rgindia@gmail.com

Subject : Full-Stack Architect – BlackHatSEO.co.in

Attach :

Resume

Portfolio / GitHub

2–3 live projects

Available start date

visit us : www,l4rg.com