
Why Me
I'm a software engineer with 5+ years of experience shipping full-stack web and SaaS products, fintech and prop-trading platforms, and AI-powered systems used by tens of thousands of people. I care about the whole picture: clean architecture, a fast and accessible interface, and code a team can maintain long after launch.
At Cynoia, a SaaS collaboration platform, I rebuilt the frontend from scratch in React and Tailwind/shadcn UI and migrated the backend from a Node.js/Express monolith to a NestJS microservices architecture with RabbitMQ, an API gateway and a real-time socket server, each service on its own database. I set up the CI/CD pipelines, cloud infrastructure and monitoring, and the stabilized platform powered investor demos that contributed to a $933K funding round — up from a v1 with ~2,000 users.
For Dominion Funding, a prop firm serving 12,000+ active traders, I built a dedicated affiliate portal end to end (Nuxt/Vue, Node/Express, PostgreSQL) and integrated it with the live trading platform — onboarding, reporting and dashboards that scaled to thousands of affiliates without degrading core performance. I also ran security audits and penetration testing, shipped hardening fixes for sensitive financial data, and integrated MT5.
At TradeBrix I helped build and scale a multi-tenant trading ecosystem to 45,000+ active users at 99.9% uptime: tenant-specific CRMs and real-time dashboards, a modular architecture on an NX monorepo with a tRPC/Fastify API and tenant-isolated PostgreSQL schemas, KYC/AML via Veriff, payments via Stripe, Nuvei and Cryptochill, and agentic automation that speeds delivery across modules.
Lately my focus is AI engineering — agentic systems, LLM integration, and RAG pipelines with tools like LangChain — alongside mobile apps and automation that remove repetitive work. I partner with founders and teams to take an idea from MVP to a production system that scales, and I treat continuous learning as part of the job.
That track record is backed by my work on freelance platforms: I'm a Level 2 Seller on Fiverr and a Top Rated freelancer on Upwork, with more than $120K in total earnings across freelance platforms, over 200 projects completed, and more than 100 five-star reviews at a 4.9/5 average rating. I've delivered for 20+ startups, founders and business owners worldwide — from MVPs and internal platforms to SaaS and fintech products serving thousands of users.
LET'S COOPERATEWhat You'll Get
Backend development
You'll get a backend server developed with backend frameworks such as ExpressJS and nextJS managed with a content management system such Contentful consuming data from a NoSQL/MySQL DB with a clean and reusable code written in TypeScript.
Frontend development
I like to code things from scratch, and enjoy bringing ideas to life in the browser. Languages I speak: HTML, Javascript, CSS, Sass,Typescript. Frameworks and Libraries : VueJS,ReactJS,GatsbyJS
Modern Design
You'll get a well designed brand identity, UI & UX for your website. Designed With the most used design tools for graphic design and prototyping like Adobe XD, Figma, Webflow, Illustrator and Photoshop.
AI & Agentic Systems
You'll get LLM-powered features built for production: agentic workflows, RAG pipelines over your own data, and integrations with providers like OpenAI and Anthropic using frameworks such as LangChain. From chatbots and copilots to autonomous agents, delivered with clean, typed code.
Mobile Development
You'll get cross-platform mobile apps built with React Native and Expo, sharing logic with your web stack, consuming the same APIs, and shipped to the App Store and Google Play.
Automation
You'll get repetitive work automated: data pipelines, scraping and ingestion, scheduled jobs, notifications, and internal tooling that connects your services and saves your team hours every week.
My Resume
Software Engineer
TradeBrix, DubaiAug 2025 - PresentBuilding TradeBrix, a multi-tenant financial trading platform that gives prop firms a full operational ecosystem: landing pages, client portals, admin dashboards, and management systems. NX monorepo with separate web, admin, and API apps; TypeScript tRPC API on Fastify; PostgreSQL + Drizzle ORM with tenant-isolated schemas; Supabase auth and secret vault; React + shadcn/ui portals. KYC/AML via Veriff, payments via Stripe, Nuvei, and Cryptochill, and Dockerized deployments. Scaled to 45,000+ users at 99.9% uptime.
Software Engineer
Dominion Markets, DubaiDec 2024 - Aug 2025Led development of Dominion Funding's affiliate portal (frontend and backend), supporting 5,000+ affiliates and a growing base of 12,000+ active traders. Built with Nuxt.js, Vue.js, Tailwind CSS, and PostgreSQL with a focus on performance and scalability. Partnered with the security team to resolve critical vulnerabilities and integrated third-party trading platforms such as MetaTrader 5 (MT5). Platform generates roughly $100K in monthly sales.
Online Instructor
MUniversity, RemoteMay 2024 - Jan 2025Tutored a cohort of aspiring developers building full-stack MERN (MongoDB, Express, React, Node.js) applications, from fundamentals to advanced topics. Ran project-based learning through complete app builds covering RESTful APIs, frontend/backend integration, and cloud deployment; coached Git, Agile, and testing practices; and gave individual debugging and performance support.
Full Stack Developer
Neuture AI, RemoteMar 2024 - Dec 2024Built Neuture AI's MVP with Next.js, shadcn, Tailwind CSS, Node.js, and Express.js, helping the team secure funding from a major consulting firm and Y Combinator. Translated Figma designs into responsive, cross-browser interfaces, partnered with the CTO on RESTful API design and frontend/backend integration, and contributed across the full lifecycle from sketches to a deployed MVP. Supported a EUR 50k SAFE round and rollout to early users.
Software Engineer
Cynoia, TunisMar 2023 - Feb 2024Used Nest.js and React.js to design MySQL databases and build robust microservices, and led the transition of a monolithic SaaS to a scalable microservices architecture, contributing to $933k in funding and 8,000+ active users. Built an API Gateway and WebSocket server integrated with RabbitMQ for real-time messaging, added backend and frontend caching, and delivered pixel-perfect responsive UI with MUI and Tailwind CSS.
Frontend Developer
Marble IT, Novi Sad, SerbiaFeb 2023 - Mar 2023Developed a Progressive Web Application (PWA) using ReactJS and TypeScript. Initialized the application and designed its screens, building both the visual appearance and the underlying logic. With no design guidelines provided, I worked closely with the Product Owner to align UX and UI with their vision.
Software Engineer & Technical Partner
Upwork, RemoteApr 2024 - PresentTop Rated on Upwork, with $40K+ earned partnering with founders and product teams worldwide. I take product ideas from early MVP to production systems serving thousands of active users, working across full-stack web and SaaS apps, fintech and prop-trading platforms, AI-powered products, dashboards, APIs, and third-party integrations. The work spans the full lifecycle: turning business requirements into technical solutions, building and improving codebases, fixing critical issues, optimizing performance and security, and preparing products to scale. Stack: React, Next.js, Vue/Nuxt, Node.js, NestJS, TypeScript, PostgreSQL, Supabase, plus CI/CD and cloud infrastructure.
Full-Stack Product Developer, Level 2 Seller
Fiverr, RemoteNov 2022 - PresentLevel 2 Seller with 200+ completed projects and $80K+ earned, collaborating with 20+ startups, founders, and business owners worldwide. I build web apps, SaaS products, dashboards, APIs, and eCommerce systems from scratch, take over and refactor existing codebases, fix complex issues, add features, integrate third-party services, and ship to production. Projects range from startup MVPs and internal business platforms to SaaS and fintech products serving thousands of users. Stack: React, Next.js, Vue/Nuxt, Node.js, Express, NestJS, TypeScript, PostgreSQL, Supabase, plus AI integrations, payments, testing, and deployment. 100+ 5-star reviews across freelance platforms.
Full stack JS Developer
Dev Null Productions, New YorkDec 2021 - Feb 2022Worked on the frontend app of the Ledgercity game (https://ledgercitygame.com/): unit-testing with Jest, and developed a 2D generated game map integrated into the Vue.js app. Tech stack: VueJS, Jest.
Full Stack JS Developer
WattGreen, TunisAug 2021 - Sep 2021Designing, documenting, and developing a consulting web application for a fire extinguisher startup. Tech stack: Nextjs, NodeJS, ExpressJS, TailwindCSS, mongoDB.
Full Stack Developer
ATS Digital Dev, TunisJun 2021 - Jul 2021Developed various backend and frontend functionalities of a recruiting platform. Tech stack: Symfony 4, ReactJS, MongoDB.
Full Stack JS Developer
Patton UniverCity, New YorkMay 2021 - Jun 2021Contributed to the development of Patton University's web app with a multinational team: built UI components with ReactJS, a JWT-based authentication system, and part of the backend API. Tech stack: Javascript, Redux, ReactJS, NodeJS, ExpressJS, MongoDB.
Awesome Clients
My Portfolio
Dominion Funding

TradeBrix
Neuture AI
Cynoia SaaS
Graphic Designer Portfolio
HeyStranger AI

Pitaya

PanamaSea Studios
Testimonials
Free Consultancy

Abderrahmen Lahmedi
Software EngineerHave a project in mind? I'm open to freelance work, from a quick consultation to building and scaling a full product. Book a free intro call below, or hire me directly on Contra.
Phone: +216 20 933 337Email: contact@abderrahmenlh.com












































