Fullstack dev for existing codebase

I already have an existing codebase for a system. The goal is not only implementation but also understanding: how the smart contract fits into the system and how the data is passed to and from the contract. · ...

We are seeking an experienced developer to help us make our existing app codebase live.The ideal candidate will have a strong background in app deployment processes and cloud services. · ...

I need an experienced PHP developer to take over an existing live web application. · ...

Front end developer to work on one existing codebase. · ...

We are looking for a highly experienced full stack developer to take ownership of an existing production website and help us move it to the next level. · This is not a build from scratch project. You will be stepping into an active platform with an existing codebase built by a pr ...

Nous recherchons un développeur Laravel expérimenté pour intervenir sur la création et l'évolution d'un système de gestion de lives en direct au sein d'une plateforme SaaS Laravel déjà existante. · Le projet vise à proposer une expérience de live professionnelle : gestion des sal ...

We are looking for an experienced Senior Laravel developer to work on an existing web application. This is not a greenfield project — the developer will be working with an existing codebase. The contract duration is 1 to 3 months. · Add new backend features using Laravel (control ...

We are looking for an experienced Python/FastAPI developer to refactor an existing API codebase that has grown difficult to maintain. · ...

We are looking for an experienced React developer to fix UI and improve stability of existing CRM system. · Review and understand the existing CRM codebaseFix UI issues across CRM dashboards and screensPoltish UI elements without redesigning the systemEnsure overall stability and ...

I'm looking for a skilled Flutter developer to refactor improve and extend an existing mobile application called Home Services. · ...

TavernSeat es una plataforma de mercado en vivo que conecta a jugadores con Maestros del Juego para sesiones de RPG en línea. · Extender el código existente para Phase II. · ...

We are seeking a senior hands-on Salesforce developer. · Salesforce DX · Apex · ...

We have an already working AI Resume Maker built using React, Vite, · and Tailwind CSS. This is not a project from scratch. · Review existing codebase · Improve UI/UX and fix minor issues · ...

We're looking for an experienced Flutter developer to work on an existing production app. · ...

We are looking for a frontend developer to help update our existing marketing website by converting new Figma designs into production-ready Hugo templates. · Proven experience working with Hugo (templates, partials, and project structure) · Strong experience with SCSS · Solid und ...

We are developing Revoix,a multilingual voice-based mobile app focused on real-time spoken interaction.The product concept UX flows,and feature scope are fully defined.A Flutter full-source codebase already exists. · We are looking for a senior Flutter developer who can think alo ...

We are looking for a skilled C Application Developer to support smart building alarm systems projects, · Maintain and enhance existing C-based applications · Debug, analyze, and optimize large legacy systems · Implement new features and system improvements · ...

We are looking for a experienced Unity game developer. The tasks will include feature development on an existing codebase.looking for a experienced Unity developer to continue development on a game. · Must be able to understand an existing codebase,feature development on an exist ...

We are looking for a skilled C Application Developer to support smart building alarm systems projects working primarily with large and robust legacy C codebases. · Maintain and enhance existing C-based applications · Debug analyze and optimize large legacy systems · ...

I am looking for an experienced MERN Stack developer to analyze, debug and optimize an existing web application. · This is a short-term one-time project focused on working with an existing MERN codebase not building from scratch. · ...