Freelance bug fix developer

Work with a freelance developer to fix bugs and resolve technical issues fast

Your website or app is experiencing bugs and errors that hurt user experience? On ComeUp, freelance developers diagnose and fix technical issues quickly and reliably. Expert support to get your digital product back on track.

Services Freelancers

383 results

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  • DERICK
    DERICK

    Je vais développer votre application web ou mobile sur mesure

    Sales 0

    Flutter

    CSS

    Laravel

    React

    Php

    JavaScript

    HTML

  • Maxime
    Maxime

    Maxime

    Sales 0

    SQL

    MySQL

    Python

    JavaScript

    HTML

    CSS

  • SAHOBISOA
    SAHOBISOA

    Développeur Full Stack JavaScript | Expert Shopify & React

    Sales 0

    Typescript

    Shopify

    SQL

    React

    Node.js

    JavaScript

    HTML

    Restful api

    CSS

  • Abdulazeez
    Abdulazeez

    Website Developer | Marketing Specialist

    Sales 0

    SEO

    WordPress

    Web design

    Shopify

    HTML

    Conversion rate

    Digital marketing

  • Bastien
    Bastien

    Développeur – sites & apps modernes, rapides et professionnels

    Sales 0

    Node.js

    React

  • Hugo
    Hugo

    Développeur Web Front-End | HTML, CSS, JavaScript, Python

    Sales 0

    Linux

    Responsive design

    Python

    JavaScript

    HTML

    Front-end

    CSS

  • ANDRINIRINA
    ANDRINIRINA

    Je crée votre application web professionnelle avec Symfony ou Laravel (API, SaaS, CRM)

    Sales 0

    Php

    JavaScript

    Jquery

    HTML

    CSS

    React

  • Mohamed Ayouba Ould
    Mohamed Ayouba Ould

    Ould_Dev tech_Solutions

    Sales 0

    Website maintenance

    Windows optimization

    Automated responses

    Flutter

    Data extraction

    Web scraping

    SQL

    Python

    Php

  • Mahery Randriamanjato
    Mahery Randriamanjato

    Expert Support Client B2B & Process Techniques | Ancien Conseiller SFR

    Sales 0

    Versatility

  • Adedolapo
    Adedolapo

    Sales 0

    On-page seo

    Google my business

    WordPress

    Emailing automation

  • Maxime
    Maxime

    Développeur web React / Node.js: sites, applis et corrections rapides

    Sales 0

    Back-end

    React

    Node.js

    Full-stack

    Front-end

    Web application

  • Lexni Hounwanou
    Lexni Hounwanou

    Sessi_Tech

    Sales 0

    SQL

    React

    MySQL

    Showcase website

    Canva

    WordPress

    Python

    Php

    HTML

    CSS

  • Atou Diagne
    Atou Diagne

    Data analyst et developpeur Fullstack

    Sales 0

    Excel

    Laravel

    Excel chart

    Data analysis

    SQL

    React

    Python

    Machine learning

    Angular

    Canva

  • Komi Amehouenou
    Komi Amehouenou

    Développeur Web & Mobile — Sites web & applications iOS/Android sur mesure

    Sales 1

    Mobile application

    Web page writing

    WordPress

    Web application

    Flutter

    Web scraping

    CMS

    Docker

    Ci/cd pipelines

  • belalioui
    belalioui

    Python Automation Specialist | Web Scraping | Excel & PDF Automation

    Sales 0

    PDF editing

    Automated workflow

    Python

  • Titosy Razafimbelo
    Titosy Razafimbelo

    Développeur full-stack & automatisation IA - n8n, agents IA, web & mobile, WordPress, bots

    Sales 1

    ChatGPT

    Flutter

    Web scraping

    WordPress

    Typescript

    React

    Python

    Node.js

    React native

    JavaScript

  • Lionel Okpeicha
    Lionel Okpeicha

    Développeur Senior Fullstack (Node.js/React/Next.js) & Mobile Flutter — 6 ans d'expérience

    Sales 58

    Cloud computing

    Typescript

    Flutter

    Node.js

    Docker

    Api

    Tailwind

    React

    Angular

    Websockets

  • Harwinder Kumar
    Harwinder Kumar

    Malware & Hack Removal, Web Security, WordPress, Site Migration Expert

    Sales 0

    Website migration

    Network security

    SSL certificate

    Elementor

    WordPress

    Web security

    Data security

    Php

    HTML

    Google search console

  • Taratra Andriamihaja
    Taratra Andriamihaja

    Développeur full stack

    Sales 0

    Laravel

    React

    Python

    Angular

  • Driss
    Driss

    Agence développement web, mobile & trading algorithmique. Solutions sur mesure pour entrepreneurs

    Sales 0

  • Maxime
    Maxime

    Développeur full-stack — je transforme vos idées en outils qui fonctionnent

    Sales 0

    ChatGPT

    Discord bot

    No-code automation

    Web scraping

    React

    Python

    Node.js

    JavaScript

  • Jeremy
    Jeremy

    Développeur Web – Des intégrations propres, rapides et adaptées à votre budget

    Sales 0

  • Ilyas Salas
    Ilyas Salas

    Salas Partners | Expert automatisation Make.com & Zapier | CRM HubSpot & GoHighLevel

    Sales 0

    AI model deployment

    CRM management

    Automated workflow

    Make

    N8N

    No-code automation

    Zapier

    Webhooks

    Api integration

    Hubspot

  • leonel maken
    leonel maken

    Sales 0

    Python

    Html seo

    Web development training

    WordPress

    N8N

    JavaScript

    React native

    Docker

  • Neeraj Kumar
    Neeraj Kumar

    Professional and Certified Shopify Expert

    Sales 0

    Theme customization

    Winning product

    Seo-optimized content

    Shopify

    Shopify theme

    Shopify plugin

    On-page seo

    Off-page seo

    Image for seo

    SEO audit

  • Rayan
    Rayan

    Développeur Full-Stack / Front-end, Back-end, Sites Web et Applications

    Sales 0

  • Ismael
    Ismael

    informaticien & Développeur Web | Technologies de l'Information

    Sales 0

  • alexis
    alexis

    Expert en Dépannage Web Urgent (WordPress, Shopify, CSS)

    Sales 0

  • Ryan
    Ryan

    SevenDevelopment

    Sales 0

    Showcase website

    Web application

    Data security

    Web security

    WordPress

    Php

    MySQL

    JavaScript

    HTML

    CSS

  • Imadeddine
    Imadeddine

    Développeur web et automatisation | Astro, React, Python

    Sales 0

  • Emmanuel
    Emmanuel

    Développeur Web & Mobile Full Stack | Sites, Applications & Solutions sur mesure

    Sales 2

    Flutter

    React

    Node.js

    React native

    Web application

    Mobile application

    Website maintenance

    Figma

    WordPress

    Technical seo optimization

  • Pierre-Alexandre Poiraudeau
    Pierre-Alexandre Poiraudeau

    Ingénieur Infrastructure & Intégrateur IA

    Sales 0

    Automated workflow

    N8N

    System administration

    Linux

    VPS

    Python

    Docker

  • Mohamed
    Mohamed

    Ingénieur en cybersécurité

    Sales 0

    No-code automation

    Virtualization

    Server administration

    Linux

    Data security

    Python

    Web application

    Docker

    Test automation

  • JACOB
    JACOB

    PrimeDigital Agency — Des Experts vous s'y attendent !

    Sales 9

    Social media advertising

    Organic seo

    WordPress

    Shopify

    Webflow

  • Jay
    Jay

    Développeur Fullstack JS | Expert Automatisation & React

    Sales 0

    Typescript

    React

    Node.js

  • Grah Trah
    Grah Trah

    Sales 0

  • Nanja Andriamalako
    Nanja Andriamalako

    Technicien Support & Dépannage Informatique (Niveau 1 & 2)

    Sales 0

  • Nancy
    Nancy

    Développeur fullstack produit · Web · Mobile · e-commerce & SaaS

    Sales 0

    Api

    React

    Mail server

    React native

    Flutter

    Tailwind

    Typescript

    Node.js

    Back-end

    Front-end

  • Alphanni Lionel Eddino Herintsoa
    Alphanni Lionel Eddino Herintsoa

    Ingénieur Systèmes & Réseaux | Expert Support IT | Microsoft 365

    Sales 0

    Network security

    IT troubleshooting

    IT support

    Server administration

  • Anas Ouzine
    Anas Ouzine

    Full-Stack Web Developer for Modern and Scalable Applications

    Sales 0

    SEO audit

    Web design

    AI agent

    UX/UI

    Laravel

    SQL

    Php

    JavaScript

    React

    SEO

  • Flaurice
    Flaurice

    Développeur Frontend/ Site web vitrine

    Sales 0

  • Koceila Miarouf
    Koceila Miarouf

    Koceila MIAROUF

    Sales 0

    PC setup

    IT troubleshooting

    System administration

    Linux

    Server configuration

  • Youssef Ennejjar
    Youssef Ennejjar

    Développeur Full Stack | React, Django, Python & IA

    Sales 0

    CSS

    JavaScript

    Docker

    LLM

    Automated workflow

    asp.net

    Tailwind

    Node.js

    React

    Python

  • Fatahou
    Fatahou

    Développeur full stack JavaScript (React.js / Node.js)

    Sales 0

    Back-end

    SQL

    React

    Node.js

    JavaScript

    Front-end

  • Simone Mirasola
    Simone Mirasola

    Développeur web | Sites, scripts, automatisations et outils personnalisés

    Sales 0

    Web development training

    Automated workflow

    Interactive dashboard

    Scripts

    Python

    JavaScript

    HTML

    CSS

    Api

    UX/UI

  • CLEMENT FERDINAND
    CLEMENT FERDINAND

    Junior Laravel Developer | PHP & Web Development

    Sales 0

    Php

    MySQL

    JavaScript

    HTML

    CSS

    Bootstrap

    Laravel

  • Eric Randriamanantena
    Eric Randriamanantena

    Développeur Web & Expert WordPress

    Sales 0

    Python

    HTML

    SEO

    WordPress

    WooCommerce

    Web design

    Landing pages

    JavaScript

    CSS

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